Fixing Kyocera TASKalfa 508ci Printer Error Codes in details

Fixing Kyocera TASKalfa 508ci Printer Error Codes in details

– Printer model: Kyocera TASKalfa 508ci
– Fix Error codes on Kyocera TASKalfa 508ci model and its description:

• Code: C0030
• Description: FAX PWB system error
• Remedy: 1 Reset the main power switch The FAX PWB does not operate properly Turn off the power switch and pull out the power plug. After passing 5s, reattach the FAX PWB and reinsert the power plug. Then, turn on the power switch
  2 Upgrading the firmware Something wrong with the firmware Re-installing the FAX firmware
  3 Replacing the FAX PWB The FAX PWB is faulty Replace FAX PWB

• Code: C0070
• Description: FAX PWB incompatible detection error
• Remedy: 1 Checking the FAX PWB The incompatible FAX PWB is installed Install the FAX PWB for the applicable model
  2 Updating the firmware Something wrong with the firmware Re-installing the FAX firmware
  3 Replace Main PWB The main PWB is faulty Replace the main PWB

• Code: C0100
• Description: Backup memory device error
• Remedy: 1 Reset the main power switch The flash memory does not drive properly Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the main PWB Connector or FFC is not secured. Wire, FCC or board is defected. Clean up wire terminal on the main PWB and insert the wire connector and connect FFC terminal again Replace or repair wire if problem is observed. Replace the main PWB if the problem is not fixed.

• Code: C0120
• Description: MAC address data error
• Remedy: 1 Reset the main power switch The flash memory does not work properly Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the MAC address The MAC address is incorrect Replace the main PWB when the MAC address is not indicated on the network status page

• Code: C0130
• Description: Backup memory reading/writing error
• Remedy: 1 Reset the main power switch The flash memory does not work properly Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the main PWB Connector or FFC is not secured. Wire, FCC or board is defected. Clean up wire terminal on the main PWB and insert the wire connector and connect FFC terminal again Replace or repair wire if problem is observed. Replace the main PWB

• Code: C0150
• Description: Engine EEPROM reading / writing error
• Remedy: 1 Reset the main power switch EEPROM on the engine PWB does not work properly. Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the EEPROM on Engine PWB The EEPROM is not installed properly Re-install the EEPROM on the engine PWB
  3 Replacing the EEPROM The EEPROM is faulty Replace the EEPROM on the engine PWB and execute U169 After that, compare the setting value of the maintenance report output by U000 beforehand and the setting value of the maintenance report output after replacing the EEPROM, and change the setting value if it is different (Target maintenance mode: U053, U100, U101, U106, U140, U161, U464, U252, U034, U065, U066, U067) Then next, execute the following maintenance mode in order U119 (35 ppm model and faster) > U411 > U469[Auto] > U140[AC Calib] > U140[Calibration] > U412[Normal Mode](35 ppm model and faster) > U464[Calib](35 ppm model and faster) > U410 > U155[Calibration](Necessary to have an empty waste toner box)
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C0160
• Description: EEPROM data error
• Remedy: 1 Reset the main power switch EEPROM on the engine PWB does not work properly Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch
  2 Execute U021 Stored data in EEPROM (Engine PWB) is faulty Execute U021 [Exit]
  3 Replacing the EEPROM The EEPROM is faulty Replace the EEPROM on the engine PWB and execute U169 After that, compare the setting value of the maintenance report output by U000 beforehand and the setting value of the maintenance report output after replacing the EEPROM, and change the setting value if it is different (Target maintenance mode: U053, U100, U101, U106, U140, U161, U464, U252, U034, U065, U066, U067) Then next, execute the following maintenance mode in order U119 (35 ppm model and faster) > U411 > U469[Auto] > U140[AC Calib] > U140[Calibration] > U412[Normal Mode](35 ppm model and faster) > U464[Calib](35 ppm model and faster) > U410 > U155[Calibration](Necessary to have an empty waste toner box)

• Code: C0170
• Description: Charger count error
• Remedy: 1 Checking the machine serial no. on the main PWB The main PWB for the different main unit is installed Check the machine serial Nos of MAIN and ENGINE at U004, and install the correct main PWB if the main No. differs
  2 Checking the machine serial no. of the EEPROM on Engine PWB The main PWB for the different main unit is installed Check the machine serial Nos of MAIN and ENGINE at U004, and install the correct engine PWB if the engine No. differs
  3 Checking the main PWB The main PWB is faulty When the MAIN machine serial No. differs at U004, replace the main PWB and execute U004
  4 Checking the EEPROM on Engine PWB The EEPROM is faulty In case if the machine serial No. registered in the engine PWB is different in U004, reattach the EEPROM on the engine PWB. If it is not fixed, replace the EEPROM and execute U004 After that, compare the setting value of the maintenance report output by U000 beforehand and the setting value of the maintenance report output after replacing the EEPROM, and change the setting value if it is different (Target maintenance mode: U053, U100, U101, U106, U140, U161, U464, U252, U034, U065, U066, U067) Then next, execute the following maintenance mode in order U119 (35 ppm model and faster) > U411 > U469[Auto] > U140[AC Calib] > U140[Calibration] > U412[Normal Mode](35 ppm model and faster) > U464[Calib](35 ppm model and faster) > U410 > U155[Calibration](Necessary to have an empty waste toner box)
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C0180
• Description: Machine serial number mismatch
• Remedy: 1 Checking the machine serial no. on the main PWB The main PWB for the different main unit is installed Check the machine serial Nos of MAIN and ENGINE at U004, and install the correct main PWB if the main No. differs
  2 Checking the machine serial no. of the EEPROM on Engine PWB The main PWB for the different main unit is installed Check the machine serial Nos of MAIN and ENGINE at U004, and install the correct engine PWB if the engine No. differs
  3 Replace Main PWB The main PWB is faulty When the MAIN machine serial No. differs at U004, replace the main PWB and execute U004
  4 Checking the EEPROM on Engine PWB The EEPROM is faulty In case if the machine serial No. registered in the engine PWB is different in U004, reattach the EEPROM on the engine PWB. If it is not fixed, replace the EEPROM and execute U004. After that, compare the setting value of the maintenance report output by U000 beforehand and the setting value of the maintenance report output after replacing the EEPROM, and change the setting value if it is different (Target maintenance mode: U053, U100, U101, U106, U140, U161, U464, U252, U034, U065, U066, U067) Then next, execute the following maintenance mode in order U119 (35 ppm model and faster) > U411 > U469[Auto] > U140[AC Calib] > U140[Calibration] > U412[Normal Mode](35 ppm model and faster) > U464[Calib](35 ppm model and faster) > U410 > U155[Calibration](Necessary to have an empty waste toner box)
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C0350
• Description: Panel PWB communication error (Electronic volume I2C communication error)
• Remedy: 1 Reset the main power switch The operation of the operation panel PWB is faulty Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Operation panel PWB – Main PWB Operation panel PWB – NFC PWB
  3 Replacing the operation panel main PWB The operation panel main PWB is faulty Replace the operation panel main PWB
  4 Replace Main PWB The main PWB is faulty Replace the main PWB
  5 Replacing the NFC PWB NFC PWB is faulty Replace NFC PWB

• Code: C0360
• Description: Communication error between the engine PWB and ASIC
• Remedy: 1 Reset the main power switch The main PWB does not work properly Turn the power switch off and disconnect the power plug. Plug power code and turn power switch on in 5 second.
  2 Checking the Engine PWB Connector or FFC is not secured. Wire, FCC or board is defected. Clean up wire terminal on the main PWB and insert the wire connector and connect FFC terminal again Replace or repair wire if problem is observed. Replace the engine PWB if the problem is not fixed.

• Code: C0640
• Description: Flash memory (SSD) error
• Remedy: 1 Releasing the partial operation The partial operation is executed Execute resetting the partial operation at U906
  2 (For the main unit without the HDD) Replacing the SSD When installing the 8GB HDD mistakenly, it tries to access the HDD. At that time, the error appears if the HDD is not installed in the main units Replace with the correct SSD (32GB)
  3 (When abnormal sounds occur) Replacing the HDD The HDD is faulty Replace the HDD when the abnormal sounds are from the HDD
  4 Checking the connection The connector is not connected properly. The SATA cable or the wire is faulty Reconnect the below SATA cable and connector of the wire. If there is no continuity, replace SATA cable or the wire HDD – main PWB
  5 Initializing the HDD HDD stored data is faulty Execute U024 [FULL] (HDD Format)
  6 Replacing the HDD The HDD is faulty Replace the HDD
  7 Replace Main PWB The main PWB is faulty Replace the main PWB

• Code: C0650
• Description: FAX image storage pair-check error
• Remedy: 1 Checking the SSD The SSD (FAX image storage) already used in other unit is installed When installing the SSD used once, replace with the correct SSD
  2 Execute U671 The SSD (FAX image storage) already used in other unit is reused without executing U671 When installing the SSD used once, execute U671 [FAX Data CLEAR]
  3 Re-installing the SSD The SSD (FAX image storage) is not properly installed Be sure to install the SSD to the connector on the main PWB
  4 Replacing the SSD The SSD (FAX image storage) is faulty Replace with the new SSD
  5 Replace Main PWB The main PWB is faulty Replace the main PWB

• Code: C0660
• Description: Hard Disk encryption key error
• Remedy: 1 (When the issue occurs after replacing the main PWB) Executing U004 The encryption key after replacing the main PWB is faulty Execute U004 when this issue occurs after replacing the main PWB
  2 Replacing the HDD (abnormal sounds) The HDD is faulty Replace the HDD when the abnormal sounds are from the HDD
  3 Checking the connection The connector is not connected properly. The SATA cable or the wire is faulty Reconnect the below SATA cable and connector of the wire. If there is no continuity, replace SATA cable or the wire HDD – main PWB
  4 Initializing the HDD HDD stored data is faulty Execute U024 [FULL] (HDD Format)
  5 Replacing the HDD The HDD is faulty Replace the HDD
  6 Replace Main PWB The main PWB is faulty Replace the main PWB

• Code: C0670
• Description: Hard Disk overwriting error
• Remedy: 1 Replacing the HDD (abnormal sounds) The HDD is faulty Replace the HDD when the abnormal sounds are from the HDD
  2 Checking the connection The connector is not connected properly. The SATA cable or the wire is faulty Reconnect the below SATA cable and connector of the wire. If there is no continuity, replace SATA cable or the wire HDD – main PWB
  3 Initializing the HDD HDD stored data is faulty Execute U024 [FULL] (HDD Format)
  4 Replacing the HDD The HDD is faulty Replace the HDD
  5 Replace Main PWB The main PWB is faulty Replace the main PWB

• Code: C0680
• Description: SSD error
• Remedy: 1 Checking the SSD (if lit after replacing the SSD) An SSD out of specification is installed Install the SSD matching the memory capacity specification
  2 Reset the main power switch The SSD is faulty Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch
  3 Re-installing the SSD The connection with the main PWB is faulty Reinstall the SSD on the main PWB
  4 Initializing the SSD The data stored in the SSD is faulty Retrieve the SSD storage data at U026, and then initialize the SSD at U024
  5 Replacing the SSD The SSD is faulty Retrieve the SSD storage data at U026, and then replace the SSD
  6 Replace Main PWB The main PWB is faulty Replace the main PWB

• Code: C0800
• Description: Image processing error
• Remedy: 1 Checking the image data The image data is faulty When this issue occurs only when handling the certain image data, check if the image data is faulty
  2 Checking the situation The printing operation of the certain file is faulty Acquire the job’s log if the phenomenon can be reproduced by specifying the job when the error was detected
  3 Checking the main PWB Connector or FFC is not secured. Wire, FCC or board is defected. Clean up wire terminal on the main PWB and insert the wire connector and connect FFC terminal again Replace or repair wire if problem is observed. Replace the main PWB if the problem is not fixed.

• Code: C0830
• Description: FAX PWB flash program area checksum error
• Remedy: 1 Updating the firmware Something wrong with the firmware Re-installing the FAX firmware
  2 Reset the main power switch The FAX PWB is not connected properly Turn off the power switch and pull out the power plug. After passing 5s, reattach the FAX PWB and reinsert the power plug. Then, turn on the power switch
  3 Initializing the FAX The data in the FAX PWB is faulty Execute U600 to initialize the FAX
  4 Replacing the FAX PWB The FAX PWB is faulty Replace the FAX PWB

• Code: C0840
• Description: RTC error (‘Time for maintenance T’ appears)
• Remedy: 1 Executing U906 The backup battery on the main PWB is faulty, and so, the RTC settings are erased after unplugging the power cord Execute U906 and reset the display [Maintenance T]. After that, set the date and time (RTC) through System menu. (It is necessary to perform this process every time when unplug/plug the power cord.)
  2 Replacing the Main PWB The main PWB is faulty, or the backup battery runs out The user call regarding C0840 is frequent even if performing the previous treatment, replace the main PWB

• Code: C0850
• Description: TPM security chip error
• Remedy: 1 Reset the main power switch The main PWB does not work properly Turn off the power switch and unplug the power cord. After 5s passes, reconnect the power cord and turn on the power switch
  2 Updating the firmware Firmware version is not the latest. Update the latest Main firmware.
  3 Replace Main PWB The main PWB is faulty Replace the main PWB

• Code: C0870
• Description: PC FAX Image data transmission error
• Remedy: 1 Reset the main power switch The FAX PWB does not operate properly Turn the power switch and the main power switch off. After 5s passes, reattach the FAX PWB and turn the main power switch and the power switch on
  2 Initializing the FAX The data in the FAX PWB is faulty Execute U600 to initialize the FAX
  3 Updating the firmware Something wrong with the firmware Update the latest firmware.
  4 Replacing the FAX PWB The FAX PWB is faulty Replace PF PWB.
  5 Replace Main PWB The main PWB is faulty Replace the main PWB
  6 Executing U024 The data stored in the SSD is faulty Execute U024 [SSD Format]

• Code: C0920
• Description: FAX file system error
• Remedy: 1 Initializing the FAX FAX control values are incorrect Execute U600 to initialize the FAX
  2 Reset the main power switch The FAX PWB does not operate properly Turn off the power switch and the main power switch. After 5s passes, reinstall the FAX PWB, and then turn on the main power switch and the power switch
  3 Reconnecting the FAX PWB The FAX PWB is not connected properly Reinstall FAX PWB to Main PWB
  4 Updating the firmware Something wrong with the firmware Re-installing the FAX firmware
  5 Replacing the FAX PWB The FAX PWB is faulty Replace the FAX PWB

• Code: C0950
• Description: FAX job stay error
• Remedy: 1 Reset the main power switch Print processing is not properly executed Turn the power switch and the main power switch off. After 5s passes, turn the main power switch and the power switch on
  2 Updating the firmware Main firmware does not work properly Update the latest Main firmware.

• Code: C1010
• Description: Lift motor error (Main unit)
• Remedy: 1 Checking the lift plate The lift plate does not work properly Repair or replace the lift plate when it does not move vertically
  2 Checking the drive gear The drive gear to lift up the lift plate does not rotate properly Check if the lift plate lift-up drive gears rotate smoothly or have no excessive load. And apply the grease (EM-50LP, Part no.: 7BG010009H) to the sliding section and repair the related parts so that they can rotate smoothly
  3 Checking the connection The connector is not connected properly, or the wire is faulty Clean the terminal of the following wire connectors and reconnect the connectors. If there is no continuity, replace the wire. Lift motor 1 – Feed drive PWB, Feed drive PWB – Engine PWB
  4 Checking the lift motor The lift motor is faulty Check the operation of lift motor, and replace it if necessary
  5 Checking the lift upper limit sensor The lift upper limit sensor is not attached properly or is faulty Reattach the lift upper limit sensor If not resolved, replace it
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

– Kyocera TASKalfa 508ci printer Error Codes and quick guide to troubleshooting:

• Code: C1020
• Description: Lift motor error (PF 1)
  Target PF: 500-sheet PF (PF-5120)
• Remedy: 1 Checking the lift plate The lift plate does not work properly Repair or replace the lift plate when it does not move vertically
  2 Checking the drive gear The drive gear to lift up the lift plate does not rotate properly Check if the lift plate lift-up drive gears rotate smoothly or have no excessive load. And apply the grease to the sliding section and repair the related parts so that they can rotate smoothly
  3 Checking the connection The connector is not connected properly, or the wire is faulty Check the following connection and correct/ clean the terminal, and insert the connector all the way. If the wires do not have any conductivity or the drawer connectors are faulty, replace them. PF lift motor – PF PWB, PF lift sensor – PF PWB, PF PWB – Drawer connector – Engine PWB
  4 Checking the PF lift motor The PF lift motor is not attached properly or is faulty Reattach the PF lift plate. If not resolved, replace it
  5 Checking the PF lift sensor The PF lift sensor is not attached properly or is faulty Reattach PF lift sensor If not resolved, replace it
  6 Replace PF PWB PF PWB is faulty Replace PF PWB
  7 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  8 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C1030
• Description: Lift motor error (PF 2)
  Target PF: 500-sheet x 2, (PF-5130), 2,000 sheet PF (PF-5140)
• Remedy: 1 Checking the PF lift plate The PF lift plate does not operate properly Repair or replace the PF lift plate when it does not move vertically
  2 Checking the drive gear The drive gear to lift up the PF lift plate does not rotate properly Check if the PF lift plate lift-up drive gears rotate smoothly or have no excessive load. And apply the grease (EM-50LP, Part no.: 7BG010009H) to the sliding section and repair the related parts so that they can rotate smoothly
  3 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PF lift motor 1 – PF PWB
  4 Checking the PF lift motor 1 PF lift motor is faulty Replace the PF lift motor 1
  5 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PF lift upper limit sensor 1 – PF PWB
  Checking the PF lift upper limit sensor 1 PF lift upper limit sensor 1 is not properly attached, or it is faulty Reattach PF lift upper limit sensor 1. Then, replace it if it is not fixed
  7 Replacing the PF PWB PF PWB is faulty Replace PF PWB

• Code: C1040
• Description: PF lift motor error (PF 3)
  Target PF: 500 sheet x 2 PF (PF-5130)
• Remedy: 1 Checking the PF lift plate The PF lift plate does not operate properly Repair or replace the PF lift plate when it does not move vertically
  2 Checking the drive gear The drive gear to lift up the PF lift plate does not rotate properly Check if the PF lift plate lift-up drive gears rotate smoothly or have no excessive load. And apply the grease (EM-50LP, Part no.: 7BG010009H) to the sliding section and repair the related parts so that they can rotate smoothly
  3 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PF lift motor 2 – PF PWB
  4 Checking the PF lift motor 2 PF lift motor is faulty. Replace the PF lift motor 2
  5 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PF lift upper limit sensor 2 – PF PWB
  6 Checking the PF lift upper limit sensor 2 PF lift upper limit sensor 2 is not properly attached, or it is faulty Reattach the PF lift upper limit sensor 2 If not resolved, replace it
  7 Replace PF PWB PF PWB is faulty Replace PF PWB.

• Code: C1800
• Description: Paper Feeder communication error (PF-1)
  Target PF: 500-sheet PF (PF-5120)
• Remedy: 1 Checking the connection Cable is not connected to the main unit properly Reconnect the cable to the main unit
  2 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PF PWB – Engine PWB
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Replace PF PWB PF PWB is faulty Replace PF PWB.
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C1810
• Description: Paper Feeder communication error
  Target PF: 500-sheet x 2, (PF-5130), 2,000 sheet PF (PF-5140)
• Remedy: 1 Reinstalling the paper feeder The paper feeder is not properly installed Reinstall the paper feeder
  2 Checking the connection The connector is not connected properly Or wires or drawer connectors are faulty Check the following and correct/clean the terminal, and insert the connector all the way Or if the wires do not have any conductivity or the drawer connectors are faulty, replace them PF PWB – Drawer connector – PF PWB (550 sheetx1), PF PWB (550 sheet x1) – Drawer connector – engine PWB
  3 Updating the firmware Something wrong with the firmware Update the latest firmware.
  4 Replacing the PF PWB PF PWB is faulty Replace PF PWB
  5 Replacing the PF PWB PF PWB is faulty Replace PF PWB
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C1900
• Description: Paper Feeder EEPROM error
  Target PF: 500-sheet PF (PF-5120)
• Remedy: 1 Reinstalling the paper feeder The paper feeder is not installed to the main unit properly Re-install the paper feeder to the main unit
  2 Checking the connection The connector is not connected properly. Or wires are faulty Reconnect the connector between the engine PWB and PF PWB If the wire is faulty, repair or replace them If not resolved, replace the PF PWB
  3 Replacing the PF PWB PF PWB is faulty Replace PF PWB
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C1910
• Description: Paper feeder EEPROM error
  Target PF: 500-sheet x 2, (PF-5130), 2,000 sheet PF (PF-5140)
• Remedy: 1 Reinstalling the paper feeder The paper feeder is not properly installed Reinstall the paper feeder
  2 Checking the connection The connector is not connected properly. Or wires or drawer connectors are faulty Check the following and correct/clean the terminal, and insert the connector all the way Or if the wires do not have any conductivity or the drawer connectors are faulty, replace them PF PWB – Drawer connector – PF PWB (550 sheetx1)
  3 Replacing the PF PWB PF PWB is faulty Replace PF PWB Replacing the PF PWB PF PWB is faulty Replace PF PWB (Paper feeder (550 sheetx1))

• Code: C2101
• Description: Developer motor K error
• Remedy: 1 Replacing the gear The gear does not rotate properly Replace the developer unit drive gear if it is faulty
  2 Replacing the developer unit The developer roller does not rotate properly Check if the developer roller rotates. If not, replace developer unit K
  3 Checking the drive parts The drive parts do not operate properly Execute U030 [Feed] to check if the developer motor K drive gear rotates or has excessive load. Apply grease and repair the parts
  4 Checking the connection The connector is not connected properly. Or wires are faulty Re-insert the following connector of the wire If there is no conductivity, replace the wire. Developer motor K – Engine PWB
  5 Checking the developer motor K The developer motor K is faulty Reattach the developer motor K If not resolved, replace it
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2102
• Description: Developer motor C/M/Y steady-state error
• Remedy: 1 Replacing the gear The gear does not rotate properly Replace the developer unit drive gear if it is faulty
  2 Replacing the developer unit The developer roller does not rotate properly Check if the developer roller rotates, and replace the developer unit C/M/Y if not rotating
  3 Checking the drive parts The drive parts do not operate properly Execute U030 [DLP(CMY)] to check if the developer motor C/M/Y drive gear rotates or has excessive load. Apply grease and repair the parts
  4 Checking the connection The connector is not connected properly. Or wires are faulty Re-insert the following connector of the wire If there is no conductivity, replace the wire. Developer motor C/M/Y – Engine PWB
  Checking developer motor C/ M/Y Developer motor C/M/Y is faulty Reattach developer motor C/M/Y If not resolved, replace it
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2112
• Description: Developer motor CMY Startup error (DC brushless)
• Remedy: 1 Replacing the gear The gear does not rotate properly Replace the developer unit drive gear if it is faulty
  2 Replacing the developer unit The developer roller does not rotate properly Check if the developer roller rotates, and replace the developer unit C/M/Y if not rotating
  3 Checking the drive parts The drive parts do not operate properly Execute U030 [DLP(CMY)] to check if the developer motor C/M/Y drive gear rotates or has excessive load. Apply grease and repair the parts
  4 Checking the connection The connector is not connected properly. Or wires are faulty Re-insert the following connector of the wire If there is no conductivity, replace the wire. Developer motor C/M/Y – Engine PWB
  5 Checking developer motor C/ M/Y The developer motor C/M/Y is not installed properly or is faulty Reattach the developer motor C/M/Y If not resolved, replace it
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Checking the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2201
• Description: Drum motor K steady-state error
• Remedy: 1 Checking the drum motor K The drive of the drum motor K is faulty Execute U030 [Drum K] and check the operation of the drum motor K Check if the drive gears rotate or have no excessive load. And apply the grease (EM-50LP, Part no.: 7BG010009H) to the sliding section and repair the related parts
  2 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drum motor K – Feed image PWB Feed image PWB – Engine PWB
  3 Checking the drum unit K The drum unit is faulty Check if the drum or drum screw rotates manually, and replace the drum unit if the motor does not rotate
  4 Checking the drum motor K The drum motor K is faulty Replace the drum motor K
  5 Replacing the feed image PWB The feed image PWB is faulty Replace the feed image PWB
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2202
• Description: Drum motor C/M/Y steady-state error
• Remedy: 1 Checking the drum motor CMY The drive of the drum motor CMY is faulty Execute U030 [drum CMY] and check the operation of the drum motor CMY Check if the drive gears rotate or have no excessive load. And apply the grease (EM-50LP, Part no.: 7BG010009H) to the sliding section and repair the related parts
  2 Checking the connection The connector is not connected properly. Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drum motor CMY – Feed image PWB Feed image PWB – Engine PWB
  3 Checking the drum unit CMY The drum unit is faulty Check if the drum or drum screw rotates manually, and replace the drum unit if the motor does not rotate
  4 Checking the drum motor CMY The drum motor CMY is faulty Replace the drum motor CMY
  5 Replacing the feed image PWB The feed image PWB is faulty Replace the feed image PWB
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2211
• Description: Drum motor K startup error
• Remedy: 1 Replacing the gear The gear does not rotate properly If the gear drives the drum unit is faulty, replace it
  2 Replacing the drum unit The drum does not rotate properly Check if the drum or the drum screw rotates and if not, replace the drum unit K
  3 Checking the drive parts The drive parts do not operate properly Execute U030 [Feed] to check if the Drum motor K drive gear rotates or has excessive load. Apply grease and repair the parts
  4 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drum motor K – Engine PWB
  5 Checking the drum motor K The drum motor K is not attached properly or is faulty Reattach the drum motor K If not resolved, replace it
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2212
• Description: Drum motor C/M/Y startup error
• Remedy: 1 Replacing the gear The gear does not rotate properly If the gear drives the drum unit is faulty, replace it
  2 Replacing the drum unit The drum does not rotate properly Check if the drum or the drum screw rotates and if not, replace the drum unit C/M/Y
  3 Checking the drive parts The drive parts do not operate properly Execute U030 [Feed] to check if the Drum motor C/M/Y drive gear rotates or has excessive load. Apply grease and repair the parts
  4 Checking the connection The connector is not connected properly. Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drum motor C/ M/Y – Engine PWB
  5 Checking the drum motor C/M/ Y The drum motor C/M/Y is not attached properly or is faulty Reattach the drum motor C/M/Y If not resolved, replace it
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2500
• Description: Paper feed motor error
• Remedy: 1 Checking the feed motor The operation of the feed motor is faulty Execute U030 [Feed] and check the operation of the feed motor Check if the feed roller or the drive gears rotate or have no excessive load. And apply the grease (EM- 50LP, Part no.: 7BG010009H) to the sliding section and repair the related parts
  2 Checking the connection The connector is not connected properly Or wires are faulty Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Feed motor – Feed drive PWB Feed drive PWB – Feed image PWB
  3 Replacing the feed motor The feed motor is faulty Replace the feed motor
  4 Replacing the feed drive unit The feed drive unit is faulty Replace the feed drive unit
  6 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2600
• Description: PF feed motor error
• Remedy: 1 Checking the PF feed motor The PF feed motor is not attached properly or it is faulty. Execute U247 [2PF] or [LCF] > [Motor On] and check the feed operation If it does not operate properly, reconnect the connector of the PF feed motor Check if the PF feed roller and the drive gears rotate smoothly and have no excessive load, apply the grease (EM-50LP, Part no.: 7BG010009H) to the sliding section and repair the related parts so that they can rotate smoothly
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PF feed motor – PF PWB PF PWB – Engine PWB (Connection drawer between the PF and the main unit)
  3 Replacing the PF feed motor The PF feed motor is faulty Replace the PF feed motor
  4 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  5 Replacing the PF PWB PF PWB is faulty Replace PF PWB
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2610
• Description: PF2 feed motor error
• Remedy: 1 Checking the PF feed motor The PF feed motor is not attached properly or it is faulty. Execute U247 [2PF] or [LCF] > [Motor On] and check the feed operation If it does not operate properly, reconnect the connector of the PF feed motor Check if the PF feed roller and the drive gears rotate smoothly and have no excessive load, apply the grease (EM-50LP, Part no.: 7BG010009H) to the sliding section and repair the related parts so that they can rotate smoothly
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PF feed motor – PF PWB PF PWB – Engine PWB (Connection drawer between the PF and the main unit)
  3 Replacing the PF feed motor The PF feed motor is faulty Replace the PF feed motor
  4 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  5 Replacing the PF PWB PF PWB is faulty Replace PF PWB
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2700
• Description: Full-color release error
• Remedy: 1 Checking the drive parts The drive parts do not operate properly Execute U030 [Belt Release] Check if the drive gear rotates or has excessive load. Apply grease and repair the parts
  2 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the following connector of the wire If there is no conductivity, replace the wire. TC belt release sensor1/2 – Engine PWB, Transfer release motor – Engine PWB
  3 Checking the TC belt release sensor The TC belt release sensor comes off, or it is faulty Reattach TC belt release sensor 1, 2. If not resolved, replace it
  4 Checking the transfer release motor The transfer release motor is not attached properly, or it is faulty Reattach the transfer release motor If not resolved, replace it
  5 Replacing the primary transfer unit The lift drive of the primary transfer roller is faulty Replace the primary transfer unit
  6 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2760
• Description: Middle transfer belt motor startup error
• Remedy: 1 Checking the drive parts The transfer motor drive parts are faulty Execute U030 [Feed] to check if the drive gear rotates or has excessive load. Apply grease and repair the parts
  2 Replacing the primary transfer unit The primary transfer unit drive parts are faulty Or the transfer belt is faulty Replace the primary transfer unit when the primary transfer unit drive parts are faulty or the transfer belt does not rotate properly
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Transfer motor – Engine PWB
  4 Replacing the transfer motor The transfer motor is faulty Reattach the transfer motor If not resolved, replace it
  5 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C2820
• Description: Middle transfer belt motor steady-state error
• Remedy: 1 Checking the drive parts The drive transmission from the transfer motor is faulty Execute U030 [Feed] to check if the drive gear rotates or has excessive load. Apply grease and repair the parts
  2 Replacing the primary transfer unit The primary transfer unit drive parts are faulty Or the transfer belt is faulty Replace the primary transfer unit when the primary transfer unit drive parts are faulty or the transfer belt does not rotate properly
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Transfer motor – Engine PWB
  4 Replacing the transfer motor The transfer motor is faulty Reattach the transfer motor If not resolved, replace it
  5 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C3100
• Description: Carriage error
• Remedy: 1 Releasing the fixation of the mirror unit 1 The fixation of the mirror unit 1 is not released Release the fixation of the mirror unit 1
  Removal of the foreign substances and apply grease There is a load on the scanner movement Execute U073 or check the movement of the mirror unit by moving manually If an excess heavy load is given, check if there are any foreign substances adhered on the scanner wire or the scanner wire drum, and clean them After that, apply the grease (PG-671) on the scanner rail
  3 checking the scanner wire The scanner wire is dirty or came off Clean the scanner wire or reattach it
  4 Checking the scanner motor The scanner motor is faulty Reattach the scanner motor and re-insert the connector If not resolved, replace it
  5 Checking the belt tension of the scanner motor The belt tension is improper and a load is applied to the scanner movement Adjust the scanner motor belt tension properly
  6 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Scanner motor – Engine PWB
  7 Checking the Home position sensor The home position sensor is not properly attached Reattach the home position sensor
  8 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Home position sensor – Engine PWB
  9 Checking the Home position sensor Home position sensor is faulty Replace the home position sensor
  10 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  11 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C3200
• Description: LED lamp startup error
• Remedy: 1 Checking the LED lamp LED lamp does not light Execute U061 [CCD] and check if the LED lamp lights If the LED lamp does not light, replace the lamp unit After that, execute U411 [Table(ChartA)]
  2 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC CCD PWB – Engine PWB LED PWB – CCD PWB
  3 Replacing the lens unit The CCD PWB is faulty Replace the lens unit and execute U411
  4 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C3210
• Description: CIS lamp error
  Target: Dual scan DP
• Remedy: 1 Releasing the partial operation The partial operation is executed Execute resetting the partial operation at U906
  2 Checking the DPCIS The CIS lamp does not light Check if the CIS lamp lights by executing U061 [CIS] If it does not light, replace the DPCIS and execute U091 and U411
  3 Cleaning the CIS glass and CIS roller The CIS glass or CIS roller is dirty Clean the CIS glass and CIS roller
  4 Checking the DPSHD PWB The DPSHD PWB is not properly connected Reconnect the DPSHD PWB to the DPCIS
  5 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DPSHD PWB – DP PWB DP PWB – Engine PWB
  6 Updating the firmware Something wrong with the firmware Upgrade the DP firmware to the latest version
  7 Replacing the DPSHD PWB The DPSHD PWB is faulty Replace the DPSHD PWB
  8 Replacing the DP PWB The DP PWB is faulty Replace DP PWB
  9 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C3300
• Description: CCD AGC error
• Remedy: 1 Checking the LED lamp LED lamp is broken Execute U061 [CCD] and check if the LED lamp lights If the LED lamp does not light, replace the lamp unit After that, execute U411 [Table(ChartA)]
  2 Cleaning the back side of the contact glass The white reference sheet is dirty Clean the white reference sheet of the back side of the contact glass
  3 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC CCD PWB – Engine PWB LED PWB – CCD PWB
  4 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  5 Replacing the lens unit The CCD PWB is faulty Replace the lens unit and execute U411
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C3310
• Description: CIS AGC error
  Target: Dual scan DP
• Remedy: 1 Releasing the partial operation The partial operation is executed Execute resetting the partial operation at U906
  2 Cleaning the CIS glass and CIS roller The CIS glass or the CIS roller is dirty Clean the CIS glass and CIS roller
  3 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  4 Checking the DPSHD PWB The DPSHD PWB is not properly connected Reconnect the DPSHD PWB to the DPCIS
  5 Replacing the DPSHD PWB The DPSHD PWB is faulty Replace the DPSHD PWB
  6 Replacing the DPCIS The DPCIS is faulty Replace the DPCIS and execute U091 and U411
  7 Replacing the DP PWB The DP PWB is faulty Replace DP PWB
  8 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C3500
• Description: Communication error between the scanner and the ASIC
• Remedy: 1 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C3800
• Description: AFE error
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC CCD PWB – Engine PWB
  2 Replacing the lens unit The CCD PWB is faulty Replace the lens unit and execute U411
  3 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C4001
• Description: Polygon motor synchronization error
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Checking the polygon motor The polygon motor does not rotate properly Check the rotation sound of the polygon motor, and reattach or replace the LSU if it does not rotate properly Or replace them.
  3 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C4011
• Description: Polygon motor steady-state error
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Checking the polygon motor The polygon motor does not rotate properly Check the rotation sound of the polygon motor, and reattach or replace the LSU if it does not rotate properly Or replace them.
  3 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C4101
• Description: BD initialization error K
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Checking the LSU The BD sensor or the laser diode is faulty Reattach the LSU while paying attention to static electricity Or replace them.
  3 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C4102
• Description: BD initialization error C
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Checking the LSU The BD sensor or the laser diode is faulty Reattach the LSU while paying attention to static electricity Or replace them.
  3 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C4103
• Description: BD initialization error M
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Checking the LSU The BD sensor or the laser diode is faulty Reattach the LSU while paying attention to static electricity Or replace them.
  3 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C4104
• Description: BD initialization error Y
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Checking the LSU The BD sensor or the laser diode is faulty Reattach the LSU while paying attention to static electricity Or replace them.
  3 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C4201
• Description: BD steady-state error K
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Checking the LSU The BD sensor or the laser diode is faulty Reattach the LSU while paying attention to static electricity Or replace them.
  3 Updating the firmware Something wrong with the firmware Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C4600
• Description: LSU cleaning motor error
• Remedy: 1 Executing the Laser Scanner Cleaning There is a load on the LSU cleaning drive gear and cleaning pad, and they do not move smoothly Execute the Laser Scanner Cleaning
  2 Cleaning the LSU cleaning drive gear and the cleaning pad There is a load on the LSU cleaning drive gear and the cleaning pad, and they do not move smoothly Clean the LSU cleaning drive gear and the cleaning pad
  3 Replacing the LSU The LSU cleaning drive gear, the cleaning wire, pad is deformed, or is faulty Replace the LSU
  4 Checking the connection Connector or FFC is not connected properly Or, wire or FFC is faulty Clean the connector terminal of the following wire and FFC terminal, and reconnect the connector and FFC If the wire or FFC is faulty, replace them LSU cleaning motor – APC PWB (LSU) APC PWB (LSU) – Engine PWB
  5 Checking the LSU cleaning motor The LSU cleaning motor is not attached properly or is faulty Reattach the LSU cleaning motor and reinsert the connector If not resolved, replace it
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C5101
• Description: Main high voltage error K
• Remedy: 1 Reattaching the main high voltage PWB Since the MC roller contact of the main high-voltage board is not in proper contact, proper current does not flow Reattach the main high voltage PWB
  2 Checking the drum unit The drum or the drum screw does not rotate properly due to the excessive load Check if the drum or drum screw rotates manually, and replace the drum unit if the motor does not rotate
  3 Replacing the drum motor K The drum motor K is faulty Replace the drum motor K
  4 Checking the main charger unit The proper voltage is not applied since foreign substances is adhering on the high-voltage contact of the main charger unit Clean the high-voltage contact of the main charger unit, and apply conductive grease to the roller shaft
  5 Replacing the main charger unit The proper voltage is not applied since the high-voltage contact of the main charger unit is deformed or damaged Replace the main charger unit and execute U930
  6 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Main high voltage PWB – Engine PWB
  7 Replacing the Main high voltage PWB The main high voltage PWB is faulty Replace the main high voltage PWB
  8 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  9 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C5102
• Description: Main high-voltage error C
• Remedy: 1 Reattaching the main high voltage PWB Since the MC roller contact of the main high-voltage board is not in proper contact, proper current does not flow Reattach the main high voltage PWB
  2 Checking the drum unit The drum or the drum screw does not rotate properly due to the excessive load Check if the drum or drum screw rotates manually, and replace the drum unit if the motor does not rotate
  3 Checking the drum motor CMY Drum motor CMY does not rotate properly due to the excessive load Replace the drum motor CMY
  4 Checking the main charger unit The proper voltage is not applied since foreign substances is adhering on the high-voltage contact of the main charger unit Clean the high-voltage contact of the main charger unit, and apply conductive grease to the roller shaft
  5 Replacing the main charger unit The proper voltage is not applied since the high-voltage contact of the main charger unit is deformed or damaged Replace the main charger unit and execute U930
  6 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Main high voltage PWB – Engine PWB
  7 Replacing the Main high voltage PWB The main high voltage PWB is faulty Replace the main high voltage PWB
  8 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  9 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C5103
• Description: Main high voltage error M
• Remedy: 1 Reattaching the main high voltage PWB Since the MC roller contact of the main high-voltage board is not in proper contact, proper current does not flow Reattach the main high voltage PWB
  2 Checking the drum unit The drum or the drum screw does not rotate properly due to the excessive load Check if the drum or drum screw rotates manually, and replace the drum unit if the motor does not rotate
  3 Checking the drum motor CMY Drum motor CMY does not rotate properly due to the excessive load Replace the drum motor CMY
  4 Checking the main charger unit The proper voltage is not applied since foreign substances is adhering on the high-voltage contact of the main charger unit Clean the high-voltage contact of the main charger unit, and apply conductive grease to the roller shaft
  5 Replacing the main charger unit The proper voltage is not applied since the highvoltage contact of the main charger unit is deformed or damaged Replace the main charger unit and execute U930
  6 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Main high voltage PWB – Engine PWB
  7 Replacing the Main high voltage PWB The main high voltage PWB is faulty Replace the main high voltage PWB
  8 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  9 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C5104
• Description: Main high voltage error Y
• Remedy: 1 Reattaching the main high voltage PWB Since the MC roller contact of the main high-voltage board is not in proper contact, proper current does not flow Reattach the main high voltage PWB
  2 Checking the drum unit The drum or the drum screw does not rotate properly due to the excessive load Check if the drum or drum screw rotates manually, and replace the drum unit if the motor does not rotate
  3 Checking the drum motor CMY Drum motor CMY does not rotate properly due to the excessive load Replace the drum motor CMY
  4 Checking the main charger unit The proper voltage is not applied since foreign substances is adhering on the high-voltage contact of the main charger unit Clean the high-voltage contact of the main charger unit, and apply conductive grease to the roller shaft
  5 Replacing the main charger unit The proper voltage is not applied since the high-voltage contact of the main charger unit is deformed or damaged Replace the main charger unit and execute U930
  6 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Main high voltage PWB – Engine PWB
  7 Replacing the Main high voltage PWB The main high voltage PWB is faulty Replace the main high voltage PWB
  8 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  9 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6000
• Description: Fuser heater broken error (Main)
• Remedy: 1 Removing a piece of paper A piece of paper remains in the fuser unit and the fuser thermistor cannot detect correct temperature Remove a piece of paper remaining in the fuser unit
  2 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  3 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the following connector of the wire If there is no conductivity, replace the wire. Fuser unit – Engine PWB, Low power supply PWB – Engine PWB
  4 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the failure of the parts in the fuser unit Replace the fuser unit
  5 Replacing the low voltage PWB The low voltage PWB is faulty Replace the low voltage PWB when the fuser heaters always turn on
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6020
• Description: Fuser heater high temperature error
• Remedy: 1 Reinstalling the fuser unit The foreign substances are adhered on the drawer connection terminal of the fuser unit Or, the drawer connector is not inserted completely Clean the drawer connection terminal of the fuser unit Check if the pin of the drawer connector is bent and if it is bent, replace the fuser unit If the pin is normal, re-install the fuser unit for connecting the drawer connector properly
  2 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  4 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the failure of the thermistor Replace the fuser unit
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6030
• Description: Fuser thermistor is broken
• Remedy: 1 Removing foreign substance There are foreign substances between the fuser unit and the thermistor Or, the foreign substances adhere on the heat roller Remove them if the foreign substances are in between the fuser unit and the thermistor or on the heat roller After that, re-install the fuser unit
  2 Reinstalling the fuser unit The foreign substances are adhered on the drawer connection terminal of the fuser unit Or, the drawer connector is not inserted completely Clean the drawer connection terminal of the fuser unit Check if the pin of the drawer connector is bent and if it is bent, replace the fuser unit If the pin is normal, re-install the fuser unit for connecting the drawer connector properly
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  4 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the wire damage or the failure of the thermistor in the fuser unit Replace the fuser unit
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6040
• Description: Fuser main heater error
• Remedy: 1 Removing foreign substance There are foreign substances between the fuser unit and the thermistor Or, the foreign substances adhere on the heat roller Remove them if the foreign substances are in between the fuser unit and the thermistor or on the heat roller After that, re-install the fuser unit
  2 Reinstalling the fuser unit The foreign substances are adhered on the drawer connection terminal of the fuser unit Or, the drawer connector is not inserted completely Clean the drawer connection terminal of the fuser unit Check if the pin of the drawer connector is bent and if it is bent, replace the fuser unit If the pin is normal, re-install the fuser unit for connecting the drawer connector properly
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  4 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the wire damage or the failure of the thermistor in the fuser unit Replace the fuser unit
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the low voltage PWB The low voltage PWB is faulty. Replace the low voltage PWB when the fuser heaters always turn on.
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6050
• Description: Fuser thermistor low temperature error
• Remedy: 1 Changing the wall outlet The power voltage descends by 10% or more of the rated voltage when printing Connect the power cord to a different wall outlet if the power supply voltage descends by 10% or more of the rated voltage
  2 Removing a piece of paper There is a piece of paper in the fuser unit so that the fuser thermistor cannot detect correct temperature Or, a piece of paper adheres on the heat roller Remove a piece of paper if it is in the fuser unit or on the heat roller After that, re-install the fuser unit
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the wire damage or the failure of the thermistor in the fuser unit Replace the fuser unit
  6 Replacing the low voltage PWB The low voltage PWB is faulty. Replace the low voltage PWB when the fuser heaters always turn on.
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6200
• Description: Fuser sub heater error
• Remedy: 1 Removing a piece of paper There is a piece of paper in the fuser unit so that the fuser thermistor cannot detect correct temperature Or, a piece of paper adheres on the heat roller Remove a piece of paper if it is in the fuser unit or on the heat roller After that, re-install the fuser unit
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the wire damage or the failure of the thermistor in the fuser unit Replace the fuser unit
  5 Replacing the low voltage PWB The low voltage PWB is faulty. Replace the low voltage PWB when the fuser heaters always turn on.
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6220
• Description: Fuser sub heater high temperature error
• Remedy: 1 Removing a piece of paper There is a piece of paper in the fuser unit so that the fuser thermistor cannot detect correct temperature Or, a piece of paper adheres on the heat roller Remove a piece of paper if it is in the fuser unit or on the heat roller After that, re-install the fuser unit
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the wire damage or the failure of the thermistor in the fuser unit Replace the fuser unit
  5 Replacing the low voltage PWB The low voltage PWB is faulty. Replace the low voltage PWB when the fuser heaters always turn on.
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6230
• Description: Fuser edge thermistor broken detection
• Remedy: 1 Removing a piece of paper There is a piece of paper in the fuser unit so that the fuser thermistor cannot detect correct temperature Or, a piece of paper adheres on the heat roller Remove a piece of paper if it is in the fuser unit or on the heat roller After that, re-install the fuser unit
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the wire damage or the failure of the thermistor in the fuser unit Replace the fuser unit
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6250
• Description: Fuser edge thermistor low temperature error
• Remedy: 1 Changing the wall outlet The power voltage descends by 10% or more of the rated voltage when printing Connect the power cord to a different wall outlet if the power supply voltage descends by 10% or more of the rated voltage
  2 Removing a piece of paper There is a piece of paper in the fuser unit so that the fuser thermistor cannot detect correct temperature Or, a piece of paper adheres on the heat roller Remove a piece of paper if it is in the fuser unit or on the heat roller After that, re-install the fuser unit
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the fuser unit The fuser thermistor cannot detect correct temperature due to the wire damage or the failure of the thermistor in the fuser unit Replace the fuser unit
  6 Replacing the low voltage PWB The low voltage PWB is faulty. Replace the low voltage PWB when the fuser heaters always turn on.
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6400
• Description: Zero-cross signal error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  2 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  3 Checking the low voltage PWB The low voltage PWB is faulty. Replacing the low voltage PWB
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6610
• Description: Fuser pressure release error
• Remedy: 1 Removing a piece of paper There is a piece of paper in the fuser unit so that the fuser thermistor cannot detect correct temperature Or, a piece of paper adheres on the heat roller Remove a piece of paper if it is in the fuser unit or on the heat roller After that, re-install the fuser unit
  2 Checking the fuser pressure release operation The fuser pressure release does not operate properly Check if the pressure can be reduced by reverse-rotating the fuser gear
  3 Checking the fuser pressure release sensor The fuser pressure release sensor is not properly attached Check if the fuser pressure release sensor is interrupted by the actuator at the fuser pressure decrease operation If not reattach the parts
  4 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drawer connector of the fuser unit – Feed image PWB Feed image PWB – Engine PWB
  5 Replacing the fuser pressure release motor The fuser pressure release motor is faulty Replace the fuser pressure release motor
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the fuser release motor The fuser motor is faulty Replace the fuser motor
  8 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C6910
• Description: Engine firmware unexpected error
• Remedy: 1 Resetting the main power switch Starting up the power is slow Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Fixing the Engine PWB The engine PWB is not installed properly and grounding is not secured Retighten the fixing screws of the engine PWB
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Checking the Engine PWB Connector or FFC is not connected properly Or, Wire, FCC, board is faulty Clean up wire terminal on the main PWB and insert the wire connector and connect FFC terminal again If the wire or FFC is faulty, repair or replace them Replace the engine PWB if the problem is not fixed

• Code: C7001 … C7004
• Description: C7001: Toner motor K error
  C7002: Toner motor C error
  C7003: Toner motor M error
  C7004: Toner motor Y error
• Remedy: 1 Replacing the toner container The spiral locks up (it does not rotate) Replace toner container K if the spiral of the toner container cannot be rotated manually
  2 Checking the toner container drive parts The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Check if the coupling or the gears are not damaged. If damaged, replace the parts
  3 Checking the toner supply drive unit The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gears and the couplings in the toner supply drive unit, and apply the grease to these parts
  4 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the following connector of the wire If there is no conductivity, replace the wire. Toner motor K – Engine PWB
  5 Checking the toner supply drive unit The toner supply drive unit is not properly attached Or the drive parts are faulty Reattach the toner supply drive unit If not resolved, replace it
  6 Checking the toner motor K The toner motor K is faulty Reattach the toner motor K If not resolved, replace it
  7 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version 8 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7101
• Description: Toner sensor K error
• Remedy: 1 Re-installing the toner container The toner container is not installed properly Re-install the toner container
  2 Replacing the toner container The toner supply opening of toner container is not open Replace the toner container K
  3 Checking the toner container drive parts The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gear and the coupling and, apply the grease
  4 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit K all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit K – Drum/developer relay PWB:, Drum/ developer relay PWB: – Engine PWB, Toner motor K – Engine PWB
  5 Replacing the developer unit K The gear or the spiral of the developer unit does not rotate Or, the toner sensor K is faulty Replace the developer unit K
  6 Checking the toner supply drive unit The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gears and the couplings in the toner supply drive unit, and apply the grease to these parts
  7 Checking the toner motor K The toner motor K is not attached properly or is faulty Reattach the toner motor K If not resolved, replace it
  8 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  9 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  10 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7102
• Description: Toner sensor C error
• Remedy: 1 Re-installing the toner container The toner container is not installed properly Replace the toner container C
  2 Replacing the toner container The toner supply opening of toner container is not open Replace the toner container C
  3 Checking the toner container drive parts The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gear and the coupling and, apply the grease
  4 Checking the connection The connector is not connected properly Or wires are faulty. Reinsert the developer unit C all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit C – Drum/developer relay PWB:, Drum/ developer relay PWB: – Engine PWB, Toner motor C – Engine PWB
  5 Replacing the developer unit C The gear or the spiral of the developer unit does not rotate Or the toner sensor C is faulty Replace the developer unit C 6 Checking the toner supply drive unit The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gears and the couplings in the toner supply drive unit, and apply the grease to these parts
  7 Checking the toner motor C The toner motor C is not attached properly or is faulty Reattach the toner motor C If not resolved, replace it
  8 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  9 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  10 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7103
• Description: Toner sensor M error
• Remedy: 1 Re-installing the toner container The toner container is not installed properly Replace the toner container M
  2 Replacing the toner container The toner supply opening of toner container is not open Replace the toner container M
  3 Checking the toner container drive parts The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gear and the coupling and, apply the grease
  4 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit M all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit M – Drum/developer relay PWB:, Drum/ developer relay PWB: – Engine PWB, Toner motor M – Engine PWB
  5 Replacing the developer unit M The gear or the spiral of the developer unit does not rotate The toner sensor M is faulty Replace the developer unit M
  6 Checking the toner supply drive unit The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gears and the couplings in the toner supply drive unit, and apply the grease to these parts
  7 Checking the toner motor M The toner motor M is not attached properly or is faulty Reattach the toner motor M If not resolved, replace it
  8 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  9 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  10 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7104
• Description: Toner sensor Y error
• Remedy: 1 Re-installing the toner container The toner container is not installed properly Replace the toner container Y
  2 Replacing the toner container The toner supply opening of toner container is not open Replace the toner container Y
  3 Checking the toner container drive parts The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gear and the coupling and, apply the grease
  4 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit Y all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit Y – Drum/developer relay PWB:, Drum/ developer relay PWB: – Engine PWB, Toner motor Y – Engine PWB
  5 Replacing the developer unit Y The gear or the spiral of the developer unit does not rotate The toner sensor Y is faulty Replace the developer unit Y
  6 Checking the toner supply drive unit The drive gear or the coupling do not properly rotate Or the excessive load is applied to them Clean the drive gears and the couplings in the toner supply drive unit, and apply the grease to these parts
  7 Checking the toner motor Y The toner motor Y is not attached properly or is faulty Reattach the toner motor Y If not resolved, replace it
  8 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  9 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  10 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7200
• Description: Internal thermistor error (Developer)
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drum/developer relay PWB: – Feed image PWB
  2 Replacing the developer unit The toner sensor K is faulty Replace the developer unit K
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Checking the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7210
• Description: Inner thermistor short-circuited (developer)
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Drum/developer relay PWB: – Feed image PWB
  2 Replacing the developer unit The toner sensor K is faulty Replace the developer unit K
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Checking the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7221
• Description: Broken LSU thermistor error
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Replacing the LSU The LSU (LSU thermistor) is faulty Replace the LSU
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Replacing the Main PWB The main PWB is faulty Replace the main PWB

• Code: C7231
• Description: LSU thermistor short-circuited
• Remedy: 1 Checking the connection FFC is not properly connected, or it is faulty. Clean the following FFC terminal and reconnect them If the FFC terminal is deformed, or the FFC is broken, replace the FFC LSU (APC PWB) – Engine PWB
  2 Replacing the LSU The LSU (LSU thermistor) is faulty Replace the LSU
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Replacing the Main PWB The main PWB is faulty Replace the main PWB

• Code: C7401
• Description: Developer unit K type mismatch error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit K all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit K – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  2 Checking the developer unit K The different type of the developer unit is installed Install the correct developer unit
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7402
• Description: Developer unit C type mismatch error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Reinsert the developer unit C all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit C – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  2 Checking the developer unit C The different type of the developer unit is installed Install the correct developer unit
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7403
• Description: Developer unit M type mismatch error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit M all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit M – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  2 Checking the developer unit M The different type of the developer unit is installed Install the correct developer unit
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7404
• Description: Developer unit Y type mismatch error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit Y all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit Y – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  2 Checking the developer unit Y The different type of the developer unit is installed Install the correct developer unit
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7411
• Description: Drum unit K type mismatch error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the drum unit K all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Drum unit K – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  2 Checking the drum unit K The different type of the drum unit is installed Install the correct developer unit
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7412
• Description: Drum unit C type mismatch error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the drum unit C all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit C – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  2 Checking the drum unit C The different type of the drum unit is installed Install the correct developer unit
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7413
• Description: Drum unit M type mismatch error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the drum unit M all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit M – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  2 Checking the drum unit M The different type of the drum unit is installed Install the correct developer unit
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7414
• Description: Drum unit Y type mismatch error
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the drum unit Y all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit Y – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  2 Checking the drum unit Y The different type of the drum unit is installed Install the correct developer unit
  3 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  4 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7601
• Description: Front ID sensor error
• Remedy: 1 Cleaning the front ID sensor The front ID sensor is dirty Clean the front ID sensor surface
  2 Checking the ID sensor shutter The ID sensor shutter does not operate properly Open the right cover and open/close the front cover while the primary transfer unit is detached to check if the ID sensor shutter opens/closes (slides to the machine front and rear side) If not operating properly, reattach it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the following connector of the wire If there is no conductivity, replace the wire. Front ID sensor – Engine PWB
  4 Checking the front ID sensor The front ID sensor is not attached properly Reattach the front ID sensor.
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7602
• Description: Rear ID sensor error
• Remedy: 1 Cleaning the rear ID sensor The rear ID sensor is dirty Clean the rear ID sensor surface
  2 Checking the ID sensor shutter The ID sensor shutter does not operate properly Open the right cover and open/close the front cover while the primary transfer unit is detached to check if the ID sensor shutter opens/closes (slides to the machine front and rear side) If not operating properly, reattach it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the following connector of the wire If there is no conductivity, replace the wire. Rear ID sensor – Engine PWB
  4 Checking the rear ID sensor The rear ID sensor is not attached properly. Reattach the rear ID sensor
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7611 … C7614
• Description: C7611: Bias calibration read value error K
  C7612: Bias calibration read value error C
  C7613: Bias calibration read value error M
  C7612: Bias calibration read value error Y
• Remedy: 1 Resetting the main power switch The ID sensor does not operate properly Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the ID sensor shutter The ID sensor shutter is not opened Open the right cover and open/close the front cover while the primary transfer unit is detached to check if the ID sensor shutter opens/closes (slides to the machine front and rear side) If not operating properly, reattach it
  3 Cleaning the ID sensors The ID sensor is dirty Clean the ID sensor surface
  4 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the following connector of the wire If there is no conductivity, replace the wire. ID sensor – Engine PWB
  5 Executing Calibration The last calibration failed Execute [Calibration] at [Adjustment/ Maintenance] in the System Menu
  6 Cleaning the transfer belt The transfer belt surface is dirty (removable by cleaning) Check the service call log on the Event Log. If the service call repeatedly appears, clean the transfer belt surface
  7 Replacing the primary transfer unit The transfer belt surface is dirty (It cannot be removed by cleaning) Check the service call log on the Event Log. If the service call repeatedly appears, replace the primary transfer belt unit
  8 (When the print is too light) Cleaning or replacing the drum unit / developer unit / LSU The parts in the drum unit, developer unit or the LSU are dirty or worn out In case if the image is too light, clean the drum unit, developer unit and the LSU Or replace them
  9 Updating the firmware Firmware version is not the latest. Upgrading the firmware to the latest version
  10 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7620
• Description: Automatic color registration failure
• Remedy: 1 Resetting the main power switch The ID sensor does not operate properly Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the ID sensor shutter The ID sensor shutter is not opened Open the right cover and open/close the front cover while the primary transfer unit is detached to check if the ID sensor shutter opens/closes (slides to the machine front and rear side) If not operating properly, reattach it
  3 Cleaning the ID sensors The ID sensor is dirty Clean the ID sensor surface
  4 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the following connector of the wire If there is no conductivity, replace the wire. ID sensor – Engine PWB
  5 Executing Calibration The last calibration failed Execute [Calibration] at [Adjustment/ Maintenance] in the System Menu
  6 Cleaning the transfer belt The transfer belt surface is dirty (removable by cleaning) Check the service call log on the Event Log. If the service call repeatedly appears, clean the transfer belt surface
  7 Replacing the primary transfer unit The transfer belt surface is dirty (It cannot be removed by cleaning) Check the service call log on the Event Log. If the service call repeatedly appears, replace the primary transfer belt unit
  8 (When the print is too light) Cleaning or replacing the drum unit / developer unit / LSU The parts in the drum unit, developer unit or the LSU are dirty or worn out In case if the image is too light, clean the drum unit, developer unit and the LSU Or replace them
  9 (When the color registration occurs) Reinstalling the LSU and drum unit or replacing the LSU The LSU or the drum unit is not properly installed Or the LSU is faulty If the color registration shift occurs, attach the LSU and drum units to the regular position If not resolved, replace the LSU
  10 Updating the firmware Firmware version is not the latest. Upgrading the firmware to the latest version
  11 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7800
• Description: Outer thermistor broken
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the following connector of the wire If there is no conductivity, replace the wire. Temperature/humidity sensor – Engine PWB
  2 Replacing the temperature/ humidity sensor The temperature/humidity sensor is faulty Replace the temperature/humidity sensor
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7810
• Description: Outer thermistor short-circuited
  The input sampling value of the temperature/humidity sensor (Outer thermistor) is at the reference value or less.
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire Temperature/humidity sensor – Engine PWB
  2 Replacing the temperature/ humidity sensor The temperature/humidity sensor is faulty Replace the temperature/humidity sensor
  3 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7901
• Description: Drum unit K EEPROM error
• Remedy: 1 Resetting the main power switch The EEPROM data in drum unit K is faulty Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the drum unit K all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Drum unit K – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  3 Replacing the drum unit The EEPROM in drum unit K is faulty Replace the drum unit K
  4 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7902
• Description: Drum unit C EEPROM error
• Remedy: 1 Resetting the main power switch The EEPROM data in drum unit C is faulty Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the drum unit C all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Drum unit C – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  3 Replacing the drum unit The EEPROM data in drum unit C is faulty Replace the drum unit C
  4 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7903
• Description: Drum unit M EEPROM error
• Remedy: 1 Resetting the main power switch The EEPROM data in drum unit M is faulty Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the drum unit M all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Drum unit M – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  3 Replacing the drum unit The EEPROM data in drum unit M is faulty Replace the drum unit M
  4 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7904
• Description: Drum unit Y EEPROM error
• Remedy: 1 Resetting the main power switch The EEPROM data in drum unit Y is faulty Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the drum unit Y all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Drum unit Y – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  3 Replacing the drum unit The EEPROM data in drum unit Y is faulty Replace the drum unit Y
  4 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7911
• Description: Developer unit K EEPROM error
• Remedy: 1 Resetting the main power switch The EEPROM data in developer unit K is faulty Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit K all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit K – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  3 Replacing the developer unit The EEPROM data in developer unit K is faulty Replace the developer unit K
  4 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7912
• Description: Developer unit C EEPROM error
• Remedy: 1 Resetting the main power switch The EEPROM data in developer unit C is faulty Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly Or wires are faulty. Reinsert the developer unit C all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit C – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  3 Replacing the developer unit The EEPROM data in developer unit C is faulty Replace the developer unit C
  4 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7913
• Description: Developer unit M EEPROM error
• Remedy: 1 Resetting the main power switch The EEPROM data in developer unit M is faulty Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit M all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit M – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  3 Replacing the developer unit The EEPROM data in developer unit M is faulty Replace the developer unit M
  4 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C7914
• Description: Developer unit Y EEPROM error
• Remedy: 1 Resetting the main power switch The EEPROM data in developer unit Y is faulty Turn off the power switch and unplug the power cord After 5s passes, reconnect the power cord and turn on the power switch
  2 Checking the connection The connector is not connected properly Or wires are faulty. Re-insert the developer unit Y all the way and reconnect the connector And re-insert the following wire connector and, if there is no conductivity, replace the wire. Developer unit Y – Drum/developer relay PWB:, Drum/ developer relay PWB – Engine PWB
  3 Replacing the developer unit The EEPROM data in developer unit Y is faulty Replace the developer unit Y
  4 Replacing the drum/developer relay PWB: The drum/developer relay PWB is faulty Replace the drum/developer relay PWB
  5 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  6 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C8010
• Description: PH motor error 1
  Target: DF-5110 (1000-sheet finisher (DF-5210)), DF-5120 (3000-sheet finisher), (When punch unit is installed)
• Remedy: 1 Checking the punch unit The punch unit is not assembled properly If the punch unit does not move manually, repair the position where restricts the operation
  2 Checking the PH cam drive parts The PH cam drive parts are not attached properly, or faulty Reattach the punch cam drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PH Motor – PH PWB PH home position sensor – PH PWB PH PWB – DF PWB
  4 Replacing the PH motor The PH motor is faulty Execute U240 [Motor] > [Punch If it does not operate properly, replace the PH motor
  5 Checking the PH home position sensor The PH home position sensor is not properly attached, or it is faulty Execute U241 [Punch] > [Punch HP] If not operating normally, reattach the PH home position sensor If not resolved, replace the PH home position sensor
  6 Updating the firmware Firmware version is not the latest. Upgrade the PH firmware to the latest version
  7 Replacing the PH PWB The PH PWB is faulty Replace the PH PWB
  8 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8020
• Description: PH motor error 2
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), (When punch unit is installed)
• Remedy: 1 Checking the punch unit The punch unit is not assembled properly If the punch unit does not move manually, repair the position where restricts the operation
  2 Checking the PH cam drive parts The PH cam drive parts are not attached properly, or faulty Reattach the PH cam drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PH Motor – PH PWB PH PWB – DF PWB
  4 Replacing the PH motor The PH motor is faulty Execute U240 [Motor] > [Punch] If it does not operate properly, replace the PH motor
  5 Updating the firmware Firmware version is not the latest. Upgrade the PH firmware to the latest version
  6 Replacing the PH PWB The PH PWB is faulty Replace the PH PWB
  7 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8030
• Description: PH motor error 3
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), (When punch unit is installed)
• Remedy: 1 Checking the punch unit The punch unit is not assembled properly If the punch unit does not move manually, repair the position where restricts the operation
  2 Checking the PH cam drive parts The PH cam drive parts are not attached properly, or faulty Reattach the PH cam drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PH Motor – PH PWB PH PWB – DF PWB
  4 Replacing the PH motor The PH motor is faulty Execute U240 [Motor] > [Punch] If it does not operate properly, replace the PH motor
  5 Updating the firmware Firmware version is not the latest. Upgrade the PH firmware to the latest version
  6 Replacing the PH PWB The PH PWB is faulty Replace the PH PWB
  7 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8090
• Description: DF paddle motor error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF paddle drive parts The DF paddle drive parts are not attached properly or is faulty Reattach the DP paddle drive parts If not resolved, replace it
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF paddle motor – DF PWB DF paddle sensor – DF PWB
  3 Replacing DF paddle motor The DF paddle motor is faulty Execute U240[Motor] > [Beat] If it does not operate properly, replace the DF paddle motor
  4 Replacing the DF paddle sensor The DF paddle sensor is faulty Execute U241[Finisher] > [Lead Paddle] If it does not operate properly, replace the DF paddle sensor
  5 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8100
• Description: DF exit release motor error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF bundle exit unit The exit guide, etc. of the DF bundle exit unit is deformed Repair the DF bundle exit unit
  2 Checking the DF bundle exit unit drive parts The DF bundle exit unit drive parts are not attached properly or is faulty Reattach the DF bundle exit unit drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF Exit release motor – DF PWB DF bundle exit sensor – DF PWB
  4 Replacing the DF exit release motor The DF exit release motor is faulty Execute U240[Motor] > [Eject Unlock(HP)] If it does not operate properly, replace DF exit release motor
  5 Checking the DF bundle exit sensor The DF bundle exit sensor is not attached properly or is faulty Reattach the DF bundle exit sensor Next, check the operation by U241 and if it does not operate properly, replace the DF bundle exit sensor
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8140
• Description: DF tray motor error 1
  Target: DF-5120 (3000-sheet finisher) , DF-5110 (1000-sheet finisher)
• Remedy: 1 Checking the DF Main Tray/ DF tray The DF main tray/DF tray is not assembled properly If the DF main tray/DF tray is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF Main Tray/ DF tray drive parts The DF main tray/DF tray driving parts are not attached properly or is faulty Reattach the DF main tray/DF tray driving parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray motor DF PWB
  4 Replacing the DF tray motor The DF tray motor is faulty Execute U240 [Motor] > [Tray] If the DF tray motor does not operate properly, replace it.
  5 (When 1000-sheet Finisher is installed) Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray sensor 1 – DF PWB
  6 (When 3000-sheet Finisher is installed) Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray sensor 1 – DF PWB DF tray sensor 2 – DF PWB
  7 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray upper surface sensor1 – DF PWB DF tray upper surface sensor2 – DF PWB
  8 (When 1000-sheet Finisher is installed) Checking the DF tray sensor 1 The DF tray sensor 1 is not attached properly or is faulty Reattach the DF tray sensor 1 and execute U240 [Finisher] > [Tray U-Limit] If it does not operate properly, replace the DF tray sensor 1
  9 (When 3000-sheet Finisher is installed) Checking the connection The DF tray sensor 1, 2 are not attached properly or is faulty Reattach the DF tray sensor 1, 2 and execute U241 [Finisher] > [Tray U-Limit] or [Tray HP2] If it does not operate properly, replace the DF tray sensor 1, 2
  10 Checking the DF tray upper surface sensor 1, 2 The DF tray upper surface sensor1, 2 are not attached properly or is faulty Reattach the DF tray upper surface sensor 1, 2 and execute U241 [Finisher] > [Tray Top] If it does not operate properly, replace the DF tray upper surface sensor1, 2
  11 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8140
• Description: DF tray motor error 1
  Target: DF-5100 <Inner finisher>
• Remedy: 1 Checking the DF tray The DF tray is not installed properly If the DF tray is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF tray drive parts The DF tray drive parts are not attached properly or is faulty Reattach the DF tray drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray motor DF PWB DF paper holding sensor1 – DF PWB DF paper holding sensor2 – DF PWB
  4 Replacing the DF tray motor The DF tray motor is faulty Check the operation by U240 and replace the DF tray motor if it does not drive properly.
  5 Checking the DF paper holding sensor1, 2 DF paper holding sensor1, 2 are not attached properly or is faulty. Reattach the DF paper holding sensor1, 2 Next, check the operation by U241 and if it does not operate properly, replace the DF paper holding sensor1, 2
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8150
• Description: DF tray motor error 2
  DF-5110 <1000-sheet finisher>
• Remedy: 1 Checking the DF tray The DF tray is not installed properly If the DF tray is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF tray drive parts The DF tray drive parts are not attached properly or is faulty Reattach the DF tray drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray motor DF PWB DF tray sensor 1 – DF PWB DF tray upper surface sensor1 – DF PWB DF tray upper surface sensor2 – DF PWB
  4 Replacing the DF tray motor The DF tray motor is faulty Check the operation by U240 and replace the DF tray motor if it does not drive properly.
  5 Checking the DF tray sensor 1 The DF tray sensor 1 is not installed properly Reattach the DF tray sensor 1 Next, check the operation by U241 and if it does not operate properly, replace the DF tray sensor1
  6 Checking the DF tray upper surface sensor 1, 2 The DF tray upper surface sensor1, 2 are not attached properly or is faulty Reattach the DF tray upper surface sensor1, 2 Next, check the operation by U241 and if it does not operate properly, replace the DF tray upper surface sensor1, 2
  7 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8150
• Description: DF tray motor error 2
  DF-5120 <3000-sheet finisher>
• Remedy: 1 Checking the DF Main tray The DF main tray is not assembled properly If the DF Main tray is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF Main tray drive parts The DF Main tray drive parts are not attached properly or is faulty Reattach the DF Main tray drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray motor DF PWB DF tray sensor 1 – DF PWB DF tray sensor 2 – DF PWB DF tray upper surface sensor1 – DF PWB DF tray upper surface sensor2 – DF PWB
  4 Replacing the DF tray motor The DF tray motor is faulty Execute U240 [Motor] > [Tray] If the DF tray motor does not operate properly, replace it.
  5 Checking the DF tray sensor 1, 2 The DF tray sensor 1, 2 are not attached properly or is faulty Reattach the DF tray sensor 1, 2 and execute U241 [Finisher] > [Tray U-Limit] or [Tray HP2] If it does not operate properly, replace the DF tray sensor 1, 2
  6 Checking the DF tray upper surface sensor 1, 2 The DF tray upper surface sensor1, 2 are not attached properly or is faulty Reattach the DF tray upper surface sensor 1, 2 and execute U241 [Finisher] > [Tray Top] If it does not operate properly, replace the DF tray upper surface sensor1, 2
  7 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8160
• Description: DF tray motor error 3
  DF-5110 <1000-sheet finisher>
• Remedy: 1 Checking the DF tray The DF tray is not installed properly If the DF tray is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF tray drive parts The DF tray drive parts are not attached properly or is faulty Reattach the DF tray drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray motor DF PWB DF tray sensor 3 – DF PWB
  4 Checking the DF tray motor The DF tray motor is faulty Execute U240 [Motor] > [Tray] If the DF tray motor does not operate properly, replace it.
  5 Checking the DF tray sensor 3 The DF tray sensor 3 is not attached properly or is faulty Reattach the DF tray sensor 3 Next, check the operation by U241 and if it does not operate properly, replace the DF tray sensor 3
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8160
• Description: DF tray motor error 3
  DF-5120 <3000-sheet finisher>
• Remedy: 1 Checking the DF Main tray The DF main tray is not assembled properly If the DF Main tray is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF Main tray drive parts The DF Main tray drive parts are not attached properly or is faulty Reattach the DF Main tray drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray motor DF PWB DF tray sensor 4 – DF PWB Or. DF tray sensor (When the Booklet is installed) – DF PWB
  4 Checking the DF tray motor The DF tray motor is faulty Execute U240 [Motor] > [Tray] If the DF tray motor does not operate properly, replace it.
  5 Checking the DF tray sensor 4, 5 The DF tray sensor 4, 5 are not attached properly or is faulty Reattach the DF tray sensor 4 or DF tray sensor 5. and execute U241 [Finisher] > [Tray L-Limit] or [Tray L-Limit(BL)] If it does not operate properly, replace the DF tray sensor 4 or DF tray sensor 5
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8160
• Description: DF tray motor error 3
  Target: DF-5100 <Inner finisher>
• Remedy: 1 Checking the DF tray The DF tray is not installed properly If the DF tray is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF tray drive parts The DF tray drive parts are not attached properly or is faulty Reattach the DF tray drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray motor – DF PWB DF tray sensor – DF PWB
  4 Checking the DF tray motor The DF tray motor is faulty Check the operation by U240 and replace the DF tray motor if it does not drive properly.
  5 Checking the DF tray sensor The DF tray sensor is not attached properly or is faulty Reattach the DF tray sensor Next, check the operation by U241 and if it does not operate properly, replace the DF tray sensor
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8170
• Description: DF front width adjustment motor 1 error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF front width adjustment guide The DF front width adjustment guide is not assembled properly If the DF front width adjustment guide is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF front width adjustment guide drive parts The DF width adjustment guide drive parts are not attached properly or is faulty Reattach the DF front width adjustment guide drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF width adjustment motor1 – DF PWB DF width adjustment sensor 1 – DF PWB
  4 Replacing the DF width adjustment motor1 The DF width adjustment motor 1 is faulty Execute U240 [Motor] > [Width Test(A3)] or [Width Test (LD)] If it does not operate properly, replace the DF Width adjustment motor 1
  5 Checking the DF width adjustment sensor 1 DF width adjustment sensor 1 is not attached properly or is faulty Reattach the DF width adjust sensor 1 and execute U241 [Finisher] > [Width Front HP] If it does not operate properly, replace it
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8180
• Description: DF front width adjustment motor 2 error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF front width adjustment guide The DF front width adjustment guide is not assembled properly If the DF front width adjustment guide is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF front width adjustment guide drive parts The DF width adjustment guide drive parts are not attached properly or is faulty Reattach the DF front width adjustment guide drive parts
  3 Replacing the DF front width adjustment guide drive parts The DF front width adjustment guide drive parts are not attached properly or is faulty Replace the DF front width adjustment guide drive parts
  4 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF width adjustment motor1 – DF PWB DF width adjustment sensor 1 – DF PWB
  5 Checking the DF width adjustment motor 1 The DF width adjustment motor 1 is faulty Execute U240 [Motor] > [Width Test(A3)] or [Width Test (LD)] If it does not operate properly, replace the DF Width adjustment motor 1
  6 Checking the DF width adjustment sensor 1 DF width adjustment sensor 1 is not attached properly or is faulty Reattach the DF width adjust sensor 1 and execute U241 [Finisher] > [Width Front HP] If it does not operate properly, replace it
  7 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8190
• Description: DF rear width adjustment motor 1 error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF rear width adjustment guide The DF rear width adjustment guide is not assembled properly If the DF rear width adjustment guide is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF rear width adjustment guide drive parts The DF rear width adjustment guide drive parts are not attached properly or is faulty Reattach the DF rear width adjustment guide drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF Width adjustment motor 2- DF PWB DF width adjustment sensor 2 – DF PWB
  4 Replacing the DF width adjustment motor2 The DF width adjustment motor 2 is faulty Execute U240 [Motor] > [Width Test(A3)] or [Width Test (LD)] If it does not operate properly, replace the DF Width adjustment motor 2
  5 Checking the DF width adjustment sensor 2 DF width adjustment sensor 2 is not attached properly or is faulty Reattach the DF width adjust sensor 2 and execute U241 [Finisher] > [Width Tail HP] If it does not operate properly, replace it
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8200
• Description: DF rear width adjustment motor 2 error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF rear width adjustment guide The DF rear width adjustment guide is not assembled properly If the DF rear width adjustment guide is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF rear width adjustment guide drive parts The rear width adjustment guide drive parts are not attached properly or is faulty Reattach the DF rear width adjustment guide drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF Width adjustment motor 2- DF PWB DF width adjustment sensor 2 – DF PWB
  4 Checking the DF width adjustment motor 2 The DF width adjustment motor 2 is faulty Execute U240 [Motor] > [Width Test(A3)] or [Width Test (LD)] If it does not operate properly, replace the DF Width adjustment motor 2
  5 Checking the DF width adjustment sensor 2 DF width adjustment sensor 2 is not attached properly or is faulty Reattach the DF width adjust sensor 2 and execute U241 [Finisher] > [Width Tail HP] If it does not operate properly, replace it
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8210
• Description: DF slide motor front/rear error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF staple unit The DF staple unit is not assembled properly If the DF staple unit is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF staple unit drive parts The DF Staple unit drive parts are not attached properly or is faulty Reattach the DF Staple unit drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF staple motor – DF PWB DF staple sensor – DF PWB
  4 Replacing the DF staple motor The DF staple motor is faulty Execute U240[Motor] > [Staple] If the DF staple motor does not work properly, replace the DF staple unit
  5 Checking the DF staple sensor The DF staple sensor is not attached properly or is faulty Reattach the DF staple sensor If not resolved, replace the DF staple unit
  6 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8230
• Description: DF staple motor error 1
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF staple unit The DF staple unit is not assembled properly If DF stapling cannot be performed manually without a paper jam, repair the part that restricts the operation
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF staple unit -DF PWB
  3 Replacing the DF staple unit The DF staple unit is faulty Replace the drive unit.
  4 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8250
• Description: DF tray motor error 4
  Target: DF-5110 (1000-sheet finisher (DF-5210)) , DF-5100 (1,000-sheet finisher (DF-5110))
• Remedy: 1 Checking the DF tray The DF tray is not installed properly If the DF tray is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the DF tray drive parts The DF tray drive parts are not attached properly or is faulty Reattach the DF tray drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF tray motor – DF PWB
  4 Replacing the DF tray motor The DF tray motor is faulty Check the operation by U240 and replace the DF tray motor if it does not drive properly.
  5 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8260
• Description: DF middle motor HP detection error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the DF paddle drive parts The DF paddle drive parts are not attached properly or is faulty Reattach the DP paddle drive parts Or replace them
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF middle motor – DF PWB DF paddle sensor – DF PWB
  3 Replacing the DF middle motor DF middle motor is faulty Execute U240[Motor] > [Middle(H)] or [Middle(L)] Replace DF middle motor if it does not drive properly
  4 Checking the DF paddle sensor The DF paddle sensor is not attached properly or is faulty Reattach the DF paddle sensor and execute U241 [Finisher] > [Lead Paddle] If it does not operate properly, replace the DF paddle sensor
  5 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8410
• Description: PH slide motor 1 error
  Target: DF-5120 (3000-sheet finisher (DF-5210)) , DF-5110 (1000-sheet finisher ) (When punch unit is installed)
• Remedy: 1 Checking the punch unit The punch unit is not assembled properly If the punch sliding section is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the PH drive parts The PH drive parts are not attached properly or is faulty Reattach the PH drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PH slide motor – PH PWB PH slide sensor – PH PWB PH PWB – DF PWB
  4 Replacing the PH slide motor The PH slide motor is faulty Execute U240[Motor] > [Punch Move] If it does not operate properly, replace the PH slide motor
  5 Checking the PH slide sensor The PH slide sensor is not attached properly or is faulty Reattach the PH slide sensor Next, check the operation by U241 and if it does not operate properly, replace the PH slide sensor
  6 Replacing the PH PWB The PH PWB is faulty Replace the PH PWB
  Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8420
• Description: PH slide motor 2 error
  Target: DF-5120 (3000-sheet finisher (DF-5210)) , DF-5110 (1000-sheet finisher ) (When punch unit is installed)
• Remedy: 1 Checking the punch unit The punch unit is not assembled properly If the punch sliding section is not shifted manually back and forth, repair the part that restricts the operation
  2 Checking the PH drive parts The PH drive parts are not attached properly or is faulty Reattach the PH drive parts If not resolved, replace it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PH slide motor – PH PWB PH Paper edge sensor 1, 2 – PH PWB PH PWB – DF PWB
  4 Replacing the PH slide motor The PH slide motor is faulty Execute U240[Motor] > [Punch Move] If it does not operate properly, replace the PH slide motor
  5 Checking the PH paper edge sensor1, 2 PH paper edge sensor1, 2 are not attached properly or is faulty. Reattach the PH paper edge sensor1, 2 Next, check the operation by U241 and if it does not operate properly, replace the PH paper edge sensor1, 2
  6 Replacing the PH PWB The PH PWB is faulty Replace the PH PWB
  7 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8430
• Description: Main program error/Punch unit communication error
  Target: DF-5110 (1000-sheet finisher (DF-5210)) , DF-5120 (3000-sheet finisher) (When punch unit is installed)
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire PH PWB – DF PWB Service manual chapter 8 [PWB]
  2 Replacing the PH PWB The PH PWB is faulty Replace the PH PWB
  3 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8500
• Description: Main program error/Mail box communication error
  Target: DF-5120 (3000-sheet finisher) (When mail box is installed)
• Remedy: 1 Resetting the main power switch The board is malfunctioning Turn the power switch and main power switch off After passing 5 seconds, turn the main power switch and the power switch on
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire MT PWB – DF PWB
  3 Replacing the MT PWB MT PWB is faulty Replace MT PWB

• Code: C8510
• Description: MT conveying motor 1 error
  Target: DF-5120 (3000-sheet finisher) (When mail box is installed)
• Remedy: 1 Checking the MT conveying roller The MT conveying roller is not assembled properly If the MT conveying roller is not rotate back and forth, repair the part that restricts the operation
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire MT conveying motor – MT PWB MT home position sensor – MT PWB
  3 Replacing the MT conveying motor The MT conveying motor is faulty Execute U240[Mail Box] > [Conv] If it does not operate properly, replace the MT conveying motor
  4 Checking the MT home position sensor The MT home position sensor is not properly attached, or it is faulty Reattach the MT home position sensor and execute U241 [Mail Box] > [Motor HP] If it does not operate properly, replace the MT home position sensor
  5 Replacing the MT PWB MT PWB is faulty Replace MT PWB

• Code: C8520
• Description: MT conveying motor 2 error
  Target: DF-5120 (3000-sheet finisher) (When mail box is installed)
• Remedy: 1 Checking the MT conveying roller The MT conveying roller is not assembled properly If the MT conveying roller is not rotate back and forth, repair the part that restricts the operation
  2 Checking the MT conveying roller drive parts The MT conveying roller drive parts are not attached properly or is faulty Reattach the MT conveying roller drive parts
  3 Replacing the MT conveying roller drive parts MT conveying roller drive parts are faulty Replace the MT conveying roller drive parts
  4 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire MT conveying motor – MT PWB MT home position sensor – MT PWB
  5 Replacing the MT conveying motor The MT conveying motor is faulty Execute U240[Mail Box] > [Conv] If it does not operate properly, replace the MT conveying motor
  6 Checking the MT home position sensor The MT home position sensor is not properly attached, or it is faulty Reattach the MT home position sensor and execute U241 [Mail Box] > [Motor HP] If it does not operate properly, replace the MT home position sensor
  7 Replacing the MT PWB MT PWB is faulty Replace MT PWB

• Code: C8800
• Description: Main program error / Engine – DF communication error (DF)
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Resetting the main power switch Program does not start up properly Turn the power switch and main power switch off After passing 5 seconds, turn the main power switch and the power switch on
  2 Updating the firmware Firmware version is not the latest. Upgrade the DF firmware to the latest version
  3 Re-installing the Finisher The Finisher is not installed to the main unit properly Or, the drawer connector pin between the finisher and the main unit is deformed or damaged Re-install the finisher to the main unit Especially, in case of the inner finisher, insert it all the way and confirm if it is fixed by the screw If it is not resolved after that, check the drawer connector pin and replace it if it is deformed or damaged
  4 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF PWB – Engine PWB
  5 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C8900
• Description: DF backup error
  Target: DF-5110 (1000-sheet finisher), DF-5120 (3000-sheet finisher), DF-5100 (Inner finisher)
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF PWB – Engine PWB
  2 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C8990
• Description: Finisher setup error
  Target: DF-5110 (1000-sheet finisher) , DF-5120 (3000-sheet finisher)
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DF PWB – Engine PWB
  2 Replacing the DF PWB The DF PWB is faulty Replace the DF PWB Upgrade the firmware by using the latest upgrade pack immediately after replacing the DF PWB

• Code: C9000
• Description: Main program error/Document processor communication error
  Target: Document Processor
• Remedy: 1 Updating the firmware The firmware of the main unit and the document processor are not matched Upgrade the firmware of the main unit and the document processor to the latest version
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DP PWB – Engine PWB
  3 Replacing the DP PWB The DP PWB is faulty Replace DP PWB
  4 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C9040
• Description: DP lift motor ascend error
  Target: Dual scan DP and mechanically reversed DP with the DP feed belt
• Remedy: 1 Checking the original lift plate The original lift plate is not attached properly Or, the fulcrum of the original lift plate at the rear side of the machine is broken If the original lift plate is not shifted manually back and forth, repair the part that restricts the operation Replace it in case that the plate is deformed
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DP lift motor – DP PWB DP lift upper limit sensor – DP PWB
  3 Replacing the DP lift motor The DP lift motor is faulty Execute U243 [Lift Motor] If it does not operate properly, replace the DP lift motor
  4 Checking the DP lift upper limit sensor The DP lift upper limit sensor is not attached properly or is faulty Reattach the DP lift upper sensor and execute U244 [Lift U-Limit] If it does not operate properly, replace the DP lift upper limit sensor
  5 Replacing the DP PWB The DP PWB is faulty Replace DP PWB

• Code: C9050
• Description: DP lift motor descend error
  Target: Dual scan DP and mechanically reversed DP with the DP feed belt
• Remedy: 1 Checking the original lift plate The original lift plate is not attached properly Or, the fulcrum of the original lift plate at the rear side of the machine is broken If the original lift plate is not shifted manually back and forth, repair the part that restricts the operation Replace it in case that the plate is deformed
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DP lift motor – DP PWB DP lift lower limit sensor – DP PWB
  3 Replacing the DP lift motor The DP lift motor is faulty Execute U243 [Lift Motor] If it does not operate properly, replace the DP lift motor
  4 Checking the DP lift lower limit sensor The DP lift lower limit sensor is not attached properly or is faulty Reattach the DP lift lower limit sensor and execute U244 [Lift L- limit] If it does not operate properly, replace DP lift lower limit sensor
  5 Replacing the DP PWB The DP PWB is faulty Replace DP PWB

• Code: C9060
• Description: DP EEPROM error
  Target: Document Processor
• Remedy: 1 Checking the EEPROM The EEPROM is not installed properly Reattach the EEPROM on the DP PWB
  2 Replacing the DP PWB The DP PWB is faulty Replace DP PWB
  3 Replacing the EEPROM The EEPROM is faulty Replace the EEPROM on the DP PWB and execute U411

• Code: C9070
• Description: DP – SHD communication error
  Target: Dual scan DP
• Remedy: 1 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DPSHD PWB – DP PWB
  2 Replacing the DPSHD PWB The DPSHD PWB is faulty Replace the DPSHD PWB
  3 Replacing the DP PWB The DP PWB is faulty Replace DP PWB

• Code: C9180
• Description: DP feed-shift motor error
  Target: Dual scan DP
  When the DP feed-shift motor error (C9180) is detected (up to the second time), J9002 is displayed
• Remedy: 1 Resetting the main power switch The DP feed-shift motor does not control properly Turn the power switch and main power switch off After passing 5 seconds, turn the main power switch and the power switch on
  2 Checking the DP feed-shift motor The DP feed-shift motor does not rotate properly Or the excessive load is applied to them Remove the DP feed-shift motor and manually rotate the drive section to repair it, and then reinstall it
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the following wire and re-insert them If there is no conductivity, replace the wire DP feed-shift motor – DP PWB DP feed-shift sensor – DP PWB
  4 Replacing the DP feed-shift motor The DP feed-shift motor is faulty Replace the DP feed-shift motor
  5 Checking the DP feed-shift sensor The DP feed-shift sensor is not attached properly or is faulty Reattach the DP feed-shift sensor If not resolved, replace it
  6 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  7 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: C9200
• Description: C9200: DP SSW communication error
  C9220: DP SSW backup error
• Remedy: 1 Checking the wiring 1 Wiring between DP double feed sensor (TX) and DP PWB is faulty. Replace the wiring between DP double feed sensor (TX) and DP PWB.
  2 Checking the wiring 2 Wiring between DP double feed sensor (RX) and DP PWB is faulty. Replace the wiring between DP double feed sensor (RX) and DP PWB.
  3 Checking the DP PWB The DP PWB is faulty Replace DP PWB.
  4 Checking the DP double feed sensor The DP double feed sensor does not work properly Clean and reattach the DP double feed sensor and reconnect the connector If not resolved, replace it

• Code: C9220
• Description: System memory error (RAM reading/writing error or CPU memory error)
  The error appears during the reading/writing check of the RAM for the CPU when the main unit starts up.
• Remedy: 1 Resetting the main power switch Communication error between main PWB and operation panel PWB Turn off the power switch and unplug the power cord After 5 seconds, plug in the power code and turn the power switch on
  2 Executing U021 Backup RAM data is faulty Execute U021 and Initialize backup RAM data
  3 Replacing the Main PWB Connector or FFC is not connected properly Or, Wire, FCC, board is faulty Clean up the connector terminal on the main PWB and reinsert the wire connector, and reconnect the FFC terminal If the wire or FFC is faulty, repair or replace them Replace the main PWB if the problem is not fixed.

• Code: C9500
• Description: C9500: IPU PCB error A
• Remedy: 1 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  2 Replacing the Main PWB The main PWB is faulty Replace the main PWB

• Code: C9510
• Description: C9510: IPU PCB error B
• Remedy: 1 Updating the firmware Firmware version is not the latest. Upgrade the firmware to the latest version
  2 Replacing the Main PWB The main PWB is faulty Replace the main PWB

• Code: C9530
• Description: Backup data error D
• Remedy: 1 Checking the PWB Multiple PWBs were replaced at the same time In case of replacing 2 or more of the following related parts at the same time, put them back to the original position Related parts: Memory, each PWB
  2 Checking the unit Multiple Units were replaced at the same time Be sure not to perform the following works at the same time when the memory or each PWB is replaced Replacing the drum unit or the developer unit Relocating the drum units to other color’s position inside a main unit

• Code: C9540
• Description: Backup data error E
• Remedy: 1 Checking the PWB Multiple PWBs were replaced at the same time In case of replacing 2 or more of the following related parts at the same time, put them back to the original position Related parts: Memory, each PWB
  2 Checking the unit Multiple Units were replaced at the same time Be sure not to perform the following works at the same time when the memory or each PWB is replaced Replacing the drum unit or the developer unit Relocating the drum units to other color’s position inside a main unit

• Code: C9550
• Description: Backup data error F
• Remedy: 1 Checking the PWB Multiple PWBs were replaced at the same time In case of replacing 2 or more of the following related parts at the same time, put them back to the original position Related parts: Memory, each PWB
  2 Checking the unit Multiple Units were replaced at the same time Be sure not to perform the following works at the same time when the memory or each PWB is replaced Replacing the drum unit or the developer unit Relocating the drum units to other color’s position inside a main unit

• Code: F000
• Description: Communication error between the main unit and CPU (Communication error between controller – Panel)
  The panel cannot be detected since the CPU communication between the main PWB and the operation panel main PWB is unavailable
• Remedy: 1 Resetting the main power switch Communication error between main PWB and operation panel PWB Turn off the power switch and unplug the power cord After 5 seconds, plug in the power code and turn the power switch on
  2 Checking the connection The connector is not connected properly Or, the wire or the SATA cable is faulty Clean the wire and the connector terminal of the SATA cable and re-insert them If there is no conductivity, replace the wire. Main PWB – Operation panel main PWB
  3 Executing U021 Backup RAM data is faulty Execute U021 and Initialize backup RAM data
  4 Replacing the Main PWB The main PWB is faulty Replace the main PWB
  5 Replacing the operation panel main PWB The operation panel main PWB is faulty Replace the operation panel main PWB

• Code: F010
• Description: Program Read error
  The garbled data is detected with the program Read
• Remedy: 1 Resetting the main power switch Communication error between main PWB and operation panel PWB Turn off the power switch and unplug the power cord After 5 seconds, plug in the power code and turn the power switch on
  2 Executing U021 Backup RAM data is faulty Execute U021 and Initialize backup RAM data
  3 Replacing the Main PWB The main PWB is faulty Replace the main PWB

• Code: F021
• Description: System memory error (RAM reading/writing error or Vanguard 0 memory error)
  The error appears during the reading/writing check of the RAM for the CPU when the main unit starts up.
• Remedy: 1 Resetting the main power switch Communication error between main PWB and operation panel PWB Turn off the power switch and unplug the power cord After 5 seconds, plug in the power code and turn the power switch on
  2 Executing U021 Backup RAM data is faulty Execute U021 and Initialize backup RAM data
  3 Replacing the Main PWB Connector or FFC is not connected properly Or, Wire, FCC, board is faulty Clean up the connector terminal on the main PWB and reinsert the wire connector, and reconnect the FFC terminal If the wire or FFC is faulty, repair or replace them Replace the main PWB if the problem is not fixed.

• Code: F022
• Description: System memory error (RAM reading/writing error or Vangard 1 memory error)
  The error appears during the reading/writing check of the RAM for the CPU when the main unit starts up.
• Remedy: 1 Resetting the main power switch Communication error between main PWB and operation panel PWB Turn off the power switch and unplug the power cord After 5 seconds, plug in the power code and turn the power switch on
  2 Executing U021 Backup RAM data is faulty Execute U021 and Initialize backup RAM data
  3 Replacing the Main PWB Connector or FFC is not connected properly Or, Wire, FCC, board is faulty Clean up the connector terminal on the main PWB and reinsert the wire connector, and reconnect the FFC terminal If the wire or FFC is faulty, repair or replace them Replace the main PWB if the problem is not fixed.

• Code: F040
• Description: Communication error between the main unit and CPU (Communication error between the controller and the print engine)
  Communication error between main PWB and engine PWB
• Remedy: 1 Resetting the main power switch Communication error between main PWB and engine PWB Turn off the power switch and unplug the power cord After 5 seconds, plug in the power code and turn the power switch on
  2 Checking the connection The connector is not connected properly Or wires are faulty. Clean the connector terminal of the wire and re-insert them If there is no conductivity, replace the wire. Main PWB (YC3) – Engine PWB (YC26)
  3 Updating the firmware Firmware version is not the latest. Upgrade the main firmware and the engine firmware to the latest version
  4 Replacing the Main PWB The main PWB is faulty Replace the main PWB
  5 Replacing the Engine PWB The engine PWB is faulty Replace the engine PWB

• Code: F050
• Description: Engine program error
  Engine program cannot be started
• Remedy: 1 Updating the firmware Firmware version is not the latest. Upgrade the engine firmware to the latest version
  2 Resetting the main power switch The Engine software checksum is faulty Turn off the power switch and unplug the power cord After 5 seconds, plug in the power code and turn the power switch on
  3 Checking the EEPROM The EEPROM is not installed properly Re-install the EEPROM
  4 Checking the Engine PWB Connector or FFC is not connected properly Or, Wire, FCC, board is faulty Clean up wire terminal on the main PWB and insert the wire connector and connect FFC terminal again If the wire or FFC is faulty, repair or replace them Replace the engine PWB if the problem is not fixed

• Code: F053
• Description: Main program signature verification error
  Main program signature verification cannot be started
• Remedy: 1 Updating the firmware Firmware version is not the latest. Upgrade the panel firmware to the latest version
  2 Resetting the main power switch Turn off the power switch and unplug the power cord After 5 seconds, plug in the power code and turn the power switch on
  3 Checking the connection The connector is not connected properly Or wires are faulty. Clean up connector terminal on the operation panel PWB and re-insert the wire connector If there is no conductivity, replace the wire
  4 Replacing the Main PWB The main PWB is faulty Replace the main PWB

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