Fixing Kyocera TASKalfa 2550ci Printer Error Codes in details

– Printer model: Kyocera TASKalfa 2550ci
– Fix Error codes on Kyocera TASKalfa 2550ci model and its description:

Code: 0030
Description: FAX control PWB system error
Processing with the fax software was disabled due to a hardware problem.
Causes: Defective PWB.
Remedy: Replace the fax control PWB and check for correct operation.

Code: 0070
Description: FAX control PWB incompatible detection error
In the initial communication with the FAX control PWB, the normal communication command is not transmitted.
Causes: Defective FAX software. Defective PWB.Defective PWB.
Remedy: Defective FAX software. Install the fax software.
Defective PWB. Replace the fax control PWB and check for correct operation.

Code: 0100
Description: Backup memory device error
Causes: Defective flash memory. Defective PWB.
Remedy: Replace the main PWB and check for correct operation.

Code: 0120
Description: MAC address data error
The data includes an invalid MAC address.
Causes: Defective flash memory. Defective PWB.
Remedy: Defective flash memory. Replace the main PWB and check for correct operation.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 0150
Description: Backup memory read/write error (engine PWB)
Detecting engine PWB EEPROM communication error.
Causes: The engine PWB EEPROM was improperly installed. Defective PWB. Defective EEPROM.
Remedy: The engine PWB EEPROM was improperly installed. Check the EEPROM is properly installed and remedy if necessary.
Defective PWB. Replace the engine PWB and check for correct operation.
Defective EEPROM. Contact the Service Administrative Division.

Code: 0160
Description: Backup memory data error (engine PWB)
Causes: Defective flash memory. Defective PWB.
Remedy: Replace the engine PWB and check for correct operation.

Code: 0170
Description: Billing counting error
A checksum error is detected in the main and engine backup memories for the billing counters.
Causes: Data in the EEPROM. Defective PWB.
Remedy: Data in the EEPROM . Contact the Service Administrative Division.
Defective PWB. Replace the main PWB or the engine PWB and check for correct operation.

Code: 0180
Description: Machine number mismatch
Machine number of main and engine does not match.
Causes: Data in the EEPROM.
Remedy: Contact the Service Administrative Division.

Code: 0320
Description: I/O CPU communication error
A communication error is detected 10 times in succession
Causes: Defective PWB.
Remedy: Replace the main PWB or the engine PWB and check for correct operation.

Code: 0620
Description: FAX image DIMM error
DIMM is not installed correctly. DIMM cannot be accessed.
Causes: DIMM installed incorrectly. Defective PWB.
Remedy: DIMM installed incorrectly. Check if the DIMM is inserted into the socket on the main PWB correctly.
Defective PWB. Replace the main PWB and check for correct operation.

Code: 0630
Description: DMA error
DMA transmission of image data does not complete within the specified period of time.
Causes: Poor contact in the connector terminals. Defective PWB.
Remedy: Poor contact in the connector terminals. Check the connection the signal cable for CIS and the main PWB, and the continuity across the connector terminals. Repair or replace if necessary.
Defective PWB. Replace the main PWB and check for correct operation.

Code: 0640
Description: Hard disk error
The hard disk cannot be accessed.
Causes: Defective connector cable or poor contact in the connector. Defective hard disk.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable.
Defective hard disk. Run U024 (HDD formatting) without turning the power off to initialize the hard disk. Replace the hard disk drive and check for correct operation if the problem is still detected after initialization.
Defective PWB. Replace the main PWB and check for correct operation.

Code: 0650
Description: FAX image DIMM check error
Improper DIMM is installed.
Causes: DIMM installed incorrectly. DIMM of another machine is installed. Defective PWB.
Remedy: DIMM installed incorrectly. Check if the DIMM is inserted into the socket on the main PWB correctly.
DIMM of another machine is installed. Perform maintenance mode U671 (RECOVERY FAX DIMM).
Defective PWB. Replace the main PWB and check for correct operation.

Code: 0800
Description: Image processing error
The JAM100 fee counter is continuously generated.
Causes: Defective main PWB.
Remedy: Replace the main PWB and check for correct operation.

Code: 0830
Description: FAX control PWB flash program area checksum error
A checksum error occurred with the program of the FAX control PWB.
Causes: Defective FAX software.stalled. Defective PWB.
Remedy: Defective FAX software. Install the fax software.
Defective PWB. Replace the FAX control PWB.

Code: 0840
Description: Faults of RTC
The time is judged to go back based on the comparison of the RTC time and the current time or five years or more have passed.
Causes: The battery is disconnected from the main PWB. Defective PWB.
Remedy: The battery is disconnected from the main PWB. Check visually and remedy if necessary
Defective PWB. Replace the main PWB and check for correct operation.

Code: 0870
Description: FAX control PWB to main PWB high capacity data transfer error
High-capacity data transfer between the FAX control PWB and the main PWB of the machine was not normally performed even if the data transfer was retried the specified times.
Causes: Improper installation FAX control PWB. Defective PWB.
Remedy: Improper installation FAX control PWB. Reinstall the FAX control PWB.
Defective PWB. Replace the FAX control PWB or main PWB and check for correct operation.

Code: 0920
Description: Fax file system error
The backup data is not retained for file system abnormality of flash memory of the FAX control PWB.
Causes: Defective PWB.
Remedy: Replace the FAX control PWB and check for correct operation.

Code: 0980
Description: 24 V power down detect
24V disconnection signal is detected for 1.5 seconds.
Causes: Defective power source PWB.
Remedy: Replace the power source PWB and check for correct operation.

Code: 1010
Description: Lift motor 1 error
After cassette 1 is inserted, the lift sensor 1 does not turn on within 15 s. This error is detected five times successively.
Causes: Defective bottom plate elevation mechanism in the cassette. Defective connector cable or poor contact in the connector. Defective drive transmission system of the lift motor. Defective lift motor. Defective PWB.
Remedy: Defective bottom plate elevation mechanism in the cassette. Check to see if the bottom plate can move smoothly and repair any problem that is found.
Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity of the connector cable. If necessary, replace the cable. Lift motor 1 and engine PWB (YC15)
Defective drive transmission system of the lift motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if necessary.
Defective lift motor. Replace the lift motor 1.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 1020
Description: Lift motor 2 error
After cassette 2 is inserted, PF lift sensor 2 does not turn on within 15s. This error is detected five times successively.
Causes: Defective bottom plate elevation mechanism in the cassette. Defective connector cable or poor contact in the connector. Defective drive transmission system of the PF lift motor 1. Defective lift motor. Defective PWB.
Remedy: Defective bottom plate elevation mechanism in the cassette. Check to see if the bottom plate can move smoothly and repair any problem that is found.
Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity of the connector cable. If necessary, replace the cable. Lift motor 2 and Video PWB (YC8)
Defective drive transmission system of the PF lift motor 1. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if necessary.
Defective lift motor. Replace the PF lift motor 2.
Defective PWB. Replace the video PWB and check for correct operation.

Code: 1030
Description: PF lift motor 1 error (paper feeder)
After cassette 3 is inserted, PF lift sensor 1 does not turn on within 15 s. This error is detected five times successively.
Causes: Defective bottom plate elevation mechanism in the cassette. Defective connector cable or poor contact in the connector. Defective drive transmission system of the PF lift motor 1. Defective PF lift motor 1. Defective PWB.
Remedy: Defective bottom plate elevation mechanism in the cassette. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity of the connector cable. If necessary, replace the cable. PF lift motor 1 and PF main PWB (YC4)
Defective drive transmission system of the PF lift motor 1. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
Defective PF lift motor 1. Replace the PF lift motor 1.
Defective PWB. Replace the PF main PWB (Refer to the service manual of the paper feeder).

Code: 1040
Description: PF lift motor 2 error (paper feeder)
After cassette 4 is inserted, PF lift sensor 2 does not turn on within 15 s. This error is detected five times successively.
Causes: Defective bottom plate elevation mechanism in the cassette. Defective connector cable or poor contact in the connector. Defective drive transmission system of the PF lift motor 2. Defective PF lift motor 2. Defective PWB.
Remedy: Defective bottom plate elevation mechanism in the cassette. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity of the connector cable. If necessary, replace the cable. PF lift motor 2 and PF main PWB (YC7)
Defective drive transmission system of the PF lift motor 2. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
Defective PF lift motor 2. Replace the PF lift motor 2.
Defective PWB. Replace the PF main PWB (Refer to the service manual of the paper feeder).

Code: 1800
Description: Paper feeder communication error
A communication error is detected 10 times in succession.
Causes: Improper installation of the paper feeder. Defective connector cable or poor contact of the connector. Defective PWB.
Remedy: Improper installation of the paper feeder. Follow the installation instruction carefully again.
Defective connector cable or poor contact of the connector. Reinsert the connector. Also check for continuity of the connector cable. If necessary, replace the cable. PF main PWB (YC3) and engine PWB (YC9)
Defective PWB. Replace the engine PWB or the PF main PWB.

– Kyocera TASKalfa 2550ci printer Error Codes and quick guide to troubleshooting:

Code: 1900
Description: Paper feeder EEPROM error
When writing the data, the write data and the read data is not continuously in agreement 4 times.
Causes: Defective PWB. Device damage of EEPROM.
Remedy: Defective PWB. Replace the PF main PWB (Refer to the service manual of the paper feeder).
Device damage of EEPROM. Contact the Service Administrative Division.

Code: 2101
Description: Developer motor K steadystate error
The rated speed signal detected the stability OFF continuously for 1 s after the developer motor K stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity of the connector cable. If necessary, replace the cable. Developer motor K and engine PWB (YC4)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if necessary.
Defective motor. Replace the Developer motor K.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2102
Description: Developer motor YCM steady-state error
The rated speed signal detected the stability OFF continuously for 1 s after the developer motor YCM stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer motor YCM and engine PWB (YC3)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the Developer motor YCM.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2111
Description: Developer motor K startup error
Developer motor K is not stabilized within 3 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity of the connector cable. If necessary, replace the cable. Developer motor K and engine PWB (YC4)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if necessary.
Defective motor. Replace the Developer motor K.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2112
Description: Developer motor YCM startup error
Developer motor YCM is not stabilized within 3 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If necessary, replace the cable. Developer motor YCM and engine PWB (YC3)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if necessary.
Defective motor. Replace the Developer motor YCM.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2201
Description: Drum motor K steady-state error
The rated speed signal detected the stability OFF continuously for 1 s after the drum motor K stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum motor K and engine PWB (YC3)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the Drum motor K.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2202
Description: Drum motor YCM steadystate error
The rated speed signal detected the stability OFFcontinuously for 1 s after the drum motor YCM stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum motor YCM and engine PWB (YC3)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the Drum motor YCM.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2211
Description: Drum motor K startup error
Drum motor K is not stabilized within 3 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum motor K and engine PWB (YC3)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the Drum motor K.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2212
Description: Drum motor YCM startup error
Drum motor YCM is not stabilized within 3 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum motor YCM and engine PWB (YC3)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the Drum motor YCM.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2300
Description: Fuser motor steady-state error
The rated speed signal detected the stability OFF continuously for 1 s after the fuser motor stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser motor and engine PWB (YC4)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the Fuser motor.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2310
Description: Fuser motor startup error
Fuser motor is not stabilized within 3 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser motor and engine PWB (YC4)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the fuser motor.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2500
Description: Conveying motor 2 steadystate error
The rated speed signal detected the stability OFF continuously for 1 s after the conveying motor 2 stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Conveying motor 2 and video PWB (YC5)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the Conveying motor 2.
Defective PWB. Replace the video PWB and check for correct operation.

Code: 2510
Description: Conveying motor 2 startup error
Conveying motor 2 is not stabilized within 2 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Conveying motor 2 and engine PWB (YC2)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the conveying motor 2.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2550
Description: Conveying motor 1 steadystate error
The rated speed signal detected the stability OFF continuously for 1 s after the conveying motor 1 stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Conveying motor 1 and engine PWB (YC2)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the Conveying motor 1.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2560
Description: Conveying motor 1 startup error
Conveying motor 1 is not stabilized within 2 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Conveying motor 1 and engine PWB (YC2)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the conveying motor 1.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 2600
Description: PF drive motor error (paper feeder)
When the PF drive motor is driven, error signal is detected continuously for 1 s.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. PF drive motor and PF main PWB (YC2)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
Defective motor. Replace the PF drive motor.
Defective PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).

Code: 2700
Description: TC belt motor error
When the TC belt motor is driven, error signal is detected continuously for 3 s.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. TC belt motor and TC PWB(YC2) TC PWB and TC connect PWB(YC1) TC connect PWB and engine PWB(YC5)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the TC belt motor.
Defective PWB. Replace the engine PWB or TC PWB or TC connect PWB check for correct operation.

Code: 3100
Description: ISU home position error ON/OFF of the HP sensor doesn’t change after a prescribed pulse passes from power supply ON.
Causes: Defective connector cable or poor contact in the connector. Defective home position sensor. Defective ISU motor. Defective CCD PWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Home position sensor and ISC PWB (YC8) ISC PWB and main PWB (YC11)
Defective home position sensor. Replace the home position sensor.
Defective ISU motor. Replace the ISU motor.
Defective CCD PWB. Replace the image scanner unit.
Defective PWB. Replace the main PWB and check for correct operation.

Code: 3220
Description: Exposure lamp error
When the white standard data at the time of an initial is lower than a rated value.
Causes: Defective connector cable or poor contact in the connector. Defective LED PWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. CCD PWB and ISC PWB (YC9) ISC PWB and main PWB (YC11)
Defective LED PWB. Replace the LED unit and check for correct operation.
Defective PWB. Replace the main PWB and check for correct operation.

Code: 3300
Description: Optical system (AGC) error
After AGC, correct input is not obtained at CCD.
Causes: Defective connector cable or poor contact in the connector. Defective LED PWB or CCD PWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. LED PWB and ISC PWB (YC6) CCD PWB (YC2) and ISC PWB (YC9) ISC PWB (YC3) and main PWB (YC11)
Defective LED PWB or CCD PWB. Replace the image scanner unit.
Defective PWB. Replace the ISC PWB or the main PWB and check for correct operation.

Code: 3500
Description: Communication error A wrong read-back value.
Causes: Defective connector cable or poor contact in the connector. Defective CCD PWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. CCD PWB and ISC PWB (YC9) ISC PWB and main PWB (YC11)
Defective CCD PWB. Replace the image scanner unit.
Defective PWB. Replace the main PWB and check for correct operation.

Code: 3600
Description: Scanner sequence error
Causes: Defective main PWB or engine PWB.
Remedy: Replace the main PWB or the engine PWB and check for correct operation.

Code: 3700
Description: Scanner device error
Causes: CCD connector inserted incorrectly.
Remedy: Reinsert the image scanner unit connector if necessary.

Code: 3800
Description: AFE error
When writing the data, read and write data does not match 3 times in succession.
Causes: Defective ISC PWB.
Remedy: Replace the ISC PWB and check for correct operation.

Code: 3900
Description: Backup memory read/write error (ISC PWB)
Read and write data does not match.
Causes: Defective backup memory or PWB.
Remedy: Replace the ISC PWB and check for correct operation.

Code: 4001
Description: Polygon motor (K) steadystate error
The rated speed signal detected the stability OFF continuously for 1 s after the polygon motor (K) stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (K) and LSU connect PWB(YC5) LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (K).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4002
Description: Polygon motor (C) steadystate error
The rated speed signal detected the stability OFF continuously for 1 s after the polygon motor (C) stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (C) and LSU connect PWB(YC6) LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (C).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4003
Description: Polygon motor (M) steadystate error
The rated speed signal detected the stability OFF continuously for 1 s after the polygon motor (M) stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (M) and LSU connect PWB(YC7) LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (M).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4004
Description: Polygon motor (Y) steadystate error
The rated speed signal detected the stability OFF continuously for 1 s after the polygon motor (Y) stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (Y) and LSU connect PWB(YC8) LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (Y).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4011
Description: Polygon motor (K) startup error
Polygon motor (K) is not stabilized within 10 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (K) and LSU connect PWB(YC5) LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (K).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4012
Description: Polygon motor (C) startup error
Polygon motor (C) is not stabilized within 10 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (C) and LSU connect PWB(YC7) LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (C).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4013
Description: Polygon motor (M) startup error
Polygon motor (M) is not stabilized within 10 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (M) and LSU connect PWB(YC6) LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (M).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4014
Description: Polygon motor (Y) startup error
Polygon motor (Y) is not stabilized within 10 s since the motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Laser scanner unit (Y) and LSU connect PWB(YC8) LSU connect PWB and engine PWB (YC12)
Defective motor. Replace the Laser scanner unit (Y).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4101
Description: BD initialization problem (K)
BD is not detected within two seconds after the polygon motor stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective APCPWB. Defective BDPWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. BDPWB and APCPWB APCPWB and LSU connect PWB (YC1) LSU connect PWB and engine PWB (YC12)
Defective APCPWB. Defective BDPWB. Replace the Laser scanner unit (K).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4102
Description: BD initialization problem (C)
BD is not detected within two seconds after the polygon motor stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective APCPWB. Defective BDPWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. BDPWB and APCPWB APCPWB and LSU connect PWB (YC3) LSU connect PWB and engine PWB (YC12)
Defective APCPWB. Defective BDPWB. Replace the Laser scanner unit (C).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4103
Description: BD initialization problem (M)
BD is not detected within two seconds after the polygon motor stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective APCPWB. Defective BDPWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. BDPWB and APCPWB APCPWB and LSU connect PWB (YC2) LSU connect PWB and engine PWB (YC12)
Defective APCPWB. Defective BDPWB. Replace the Laser scanner unit (M).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4104
Description: BD initialization problem (Y)
BD is not detected within two seconds after the polygon motor stabilizes.
Causes: Defective connector cable or poor contact in the connector. Defective APCPWB. Defective BDPWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. BDPWB and APCPWB APCPWB and LSU connect PWB (YC4) LSU connect PWB and engine PWB (YC12)
Defective APCPWB. Defective BDPWB. Replace the Laser scanner unit (M).
Defective PWB. Replace the engine PWB or LSU connect PWB and check for correct operation.

Code: 4600
Description: LSU cleaning motor error
When the LSU cleaning motor is driven, an error signal is detected continuously for 2 s.
Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system. Defective motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity of the connector cable. If none, replace the cable. LSU cleaning motor and LSU connect PWB(YC11) LSU connect PWB and engine PWB(YC12)
Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Defective motor. Replace the LSU cleaning motor.
Defective PWB. Replace the engine PWB or LSU connect PWB check for correct operation.

Code: 4700
Description: VIDEO ASIC device error
Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively
Causes: Defective connector cable or poor contact in the connector. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Main PWB (YC105) and engine PWB (YC17)
Defective PWB. Replace the main PWB or the engine PWB and check for correct operation.

Code: 4950
Description: LSU CPU communication error
A communication error is detected 10 times in succession.
Causes: Defective connector cable or poor contact in the connector. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Main PWB and video PWB (YC1) video PWB and LSU connect PWB (YC10)
Defective PWB. Replace the main PWB or video PWB and check for correct operation.

Code: 6000
Description: Broken fuser heater wire
user thermistor 2 does not reach 80° C/176 °F even after20 s during warming up. The detected temperature of fuser thermistor2 does not reach the specified temperature (ready indication temperature) for 200 s in warming up after reached to 80° C/176 °F.
Causes: Defective connector cable or poor contact in the connector. Deformed connector pin. Fuser thermostat triggered. Broken fuser heater wire. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. IH coil unit and IHPWB IHPWB and engine PWB (YC7)
Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Fuser thermostat triggered. Broken fuser heater wire. Reinsert the fuser unit.
Defective PWB. Replace the IH PWB or the engine PWB and check for correct operation.

Code: 6020
Description: Abnormally high fuser thermistor 2 (center) temperature
The fuser thermistor 2 detects a temperature higher than 240°C/464°F continuously for 1 s.
Causes: Deformed connector pin. Shorted fuser thermistor. Defective PWB.
Remedy: Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Shorted fuser thermistor. Replace the fuser unit.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6030
Description: Fuser thermistor 2 (center) break error
A/D value of the fuser thermistor 2 exceeds 1010 bit continuously for 1 s during warming up.
Causes: Defective connector cable or poor contact in the connector. Deformed connector pin. Defective fuser thermistor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser thermister2 and fuser PWB (YC2) Fuser unit and engine PWB (YC22)
Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Defective fuser thermistor. Replace the fuser unit.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6040
Description: NC sensor error
Causes: Deformed connector pin. Shorted fuser thermistor. Defective PWB.
Remedy: Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Shorted fuser thermistor. Replace the fuser unit.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6050
Description: Abnormally low fuser thermistor 2 (center) temperature
The fuser temperature lower than 100 °C/212 °F is detected continuously for 1 s during printing.
Causes: Deformed connector pin. Defective fuser thermistor. Defective fuser heater. Defective PWB.
Remedy: Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Defective fuser thermistor. Defective fuser heater. Replace the fuser unit.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6120
Description: Abnormally high fuser thermistor 3 (press roller) temperature
The fuser temperature exceeds 200 °C/392 °F for 1 s.
Causes: Deformed connector pin. Defective fuser thermistor. Defective PWB.
Remedy: Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Defective fuser thermistor. Replace the fuser unit.
Defective PWB. Replace the IH PWB or the engine PWB and check for correct operation.

Code: 6130
Description: Fuser thermistor 3 (press roller) break error
Fuser thermistor 3 detects a temperature of -14 °C/6.8 °F . Fuser thermistor 3 does not reach 30° C/86 °F even after60 s during warming up.
Causes: Defective connector cable or poor contact in the connector. Deformed connector pin. Defective fuser thermistor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser thermistor 3 and fuser PWB (YC4) Fuser unit and engine PWB (YC22)
Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Defective fuser thermistor. Replace the fuser unit.
Defective PWB. Replace the IH PWB or the engine PWB and check for correct operation.

Code: 6150
Description: Abnormally low fuser thermistor 3 (press roller) temperature
The fuser temperature lower than 30 °C/86 °F is detected continuously for 1 s.
Causes: Deformed connector pin. Defective fuser thermistor. Defective fuser heater. Defective PWB.
Remedy: Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Defective fuser thermistor. Defective fuser heater. Replace the fuser unit.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6200
Description: Broken fuser edge heater wire
Fuser thermistor 1 does not reach 50° C/122 °F even after20 s during warming up. The detected temperature of fuser thermistor1 does not reach the specified temperature (ready indication temperature) for 60 s in warming up after reaching 50° C/122 °F.
Causes: Defective connector cable or poor contact in the connector. Deformed connector pin. Fuser thermostat triggered. Broken fuser heater wire. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. IH coil unit and IHPWB IHPWB and engine PWB (YC7)
Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Fuser thermostat triggered. Broken fuser heater wire. Reinsert the fuser unit.
Defective PWB. Replace the IH PWB or the engine PWB and check for correct operation.

Code: 6220
Description: Abnormally high fuser thermistor 1 (edge) temperature
The fuser temperature exceeds 240 °C/464 °F for 1 s.
Causes: Deformed connector pin. Defective cooling fan motor. Defective fuser thermistor. Defective PWB.
Remedy: Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Defective cooling fan motor. Replace the fuser fan motor.
Defective fuser thermistor. Replace the fuser unit.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6230
Description: Fuser thermistor 1 (edge) break error
During warming up a hearter, fuser thermistor 2 detects a temperature of 100 °C/212 °F or higher and, fuser thermistor 1 detects a temperature of 37 °C/99 °F or lower.
Causes: Defective connector cable or poor contact in the connector. Deformed connector pin. Defective fuser thermistor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Fuser thermistor 1 and fuser PWB (YC3) Fuser unit and engine PWB (YC22)
Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Defective fuser thermistor. Replace the fuser unit.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6250
Description: Abnormally low fuser thermistor 1 (edge) temperature
The fuser temperature lower than 80 °C/176 °F is detected continuously for 1 s during printing.
Causes: Deformed connector pin. Defective fuser thermistor. Defective fuser heater. Defective PWB.
Remedy: Deformed connector pin. If the I/F connector pins of the fuser unit and the main unit are deformed owing to foreign matters, such as paper dusts, replace the connectors or the units including the connectors.
Defective fuser thermistor. Defective fuser heater. Replace the fuser unit.
Defective PWB. Replace the IH PWB or the engine PWB and check for correct operation.

Code: 6410
Description: Fuser unit type mismatch problem
Absence of the fuser unit is detected.
Causes: Fuser unit connector inserted incorrectly. Different type of the fuser unit is installed.
Remedy: Fuser unit connector inserted incorrectly. Reinsert the fuser unit connector if necessary.
Different type of the fuser unit is installed. Install the correct fuser unit.

Code: 6600
Description: Belt rotation error
The belt was detected to stop for 2 s continuously during motor remote is on.
Causes: Defective fuser motor. Defective IH belt. Defective IH PWB. Defective PWB.
Remedy: Defective fuser motor. Replace the fuser motor.
Defective IH belt. Replace the fuser unit.
Defective IH PWB. Replace the IH PWB and check for correct operation.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6710
Description: CPU thermal runaway (IHPWB)
Causes: Defective PWB.
Remedy: Defective PWB. Replace the IH PWB and check for correct operation.

Code: 6720
Description: Belt rotation error (IHPWB)
Causes: Defective PWB. Defective fuser motor. Defective fuser unit.
Remedy: Defective PWB. Replace the IH PWB and check for correct operation.
Defective fuser motor. Replace the fuser motor.
Defective fuser unit. Replace the fuser unit.

Code: 6730
Description: Abnormally high IGBT1 temperature (IHPWB)
Causes: Defective PWB. Defective cooling fan motor.
Remedy: Defective PWB. Replace the IH PWB and check for correct operation.
Defective cooling fan motor. Replace the IH fan motor.

Code: 6740
Description: Abnormally high IGBT2 temperature (IHPWB)
Causes: Defective PWB. Defective cooling fan motor.
Remedy: Defective PWB. Replace the IH PWB and check for correct operation.
Defective cooling fan motor. Replace the IH fan motor.

Code: 6750
Description: Abnormally output overcurrent (IHPWB)
Causes: Defective PWB. Defective fuser unit.
Remedy: Defective PWB. Replace the IH PWB and check for correct operation.
Defective fuser unit. Replace the fuser unit.

Code: 6760
Description: Abnormally AC input overcurrent (IHPWB)
Causes: Defective PWB.
Remedy: Replace the IH PWB and check for correct operation.

Code: 6770
Description: Abnormally low electric power (IHPWB)
Causes: Defective connector cable or poor contact in the connector. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable.
Defective PWB. Replace the IH PWB and check for correct operation.

Code: 6930
Description: IH coil fan motor error
The alarm signal was detected for 5 seconds continuously during operation.
Causes: Defective connector cable or poor contact in the connector. Defective cooling fan motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. IH coil fan motor and engine PWB(YC21)
Defective cooling fan motor. Replace the container fan motor.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 6950
Description: IH CPU communication error
A communication error is detected 3 times in succession.
Causes: Defective connector cable or poor contact in the connector. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable.
Defective PWB. Replace the IH PWB or the engine PWB and check for correct operation.

Code: 6990
Description: Fuser unit type mismatch problem
Absence of the fuser unit is detected.
Causes: Defective PWB.
Remedy: Replace the IH PWB and check for correct operation.

Code: 7101
Description: Toner sensor K error
The sensor outputs are for 5 seconds, 23 or less, or 248 or more.
Causes: Defective Developer unit. Defective PWB.
Remedy: Defective Developer unit. Replace the developer unit K.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7102
Description: Toner sensor C error
The sensor outputs are for 5 seconds, 23 or less, or 248 or more.
Causes: Defective Developer unit. Defective PWB.
Remedy: Defective Developer unit. Replace the developer unit C.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7103
Description: Toner sensor M error
The sensor outputs are for 5 seconds, 23 or less, or 248 or more.
Causes: Defective Developer unit. Defective PWB.
Remedy: Defective Developer unit. Replace the developer unit M
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7104
Description: Toner sensor Y error
The sensor outputs are for 5 seconds, 23 or less, or 248 or more.
Causes: Defective Developer unit. Defective PWB.
Remedy: Defective Developer unit. Replace the developer unit Y.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7401
Description: Developer unit K type mismatch error
Absence of the developer unit K is detected.
Causes: Defective connector cable or poor contact in the connector. Different type of the developer unit is installed.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer unit K and drum connect PWB (YC9) Drum connect PWB and engine PWB (YC4)
Different type of the developer unit is installed. Install the correct developer unit.

Code: 7402
Description: Developer unit C type mismatch error
Absence of the developer unit C is detected.
Causes: Defective connector cable or poor contact in the connector. Different type of the developer unit is installed.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer unit C and drum connect PWB (YC7) Drum connect PWB and engine PWB (YC4)
Different type of the developer unit is installed. Install the correct developer unit.

Code: 7403
Description: Developer unit M type mismatch error
Absence of the developer unit M is detected.
Causes: Defective connector cable or poor contact in the connector. Different type of the developer unit is installed.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer unit M and drum connect PWB (YC8) Drum connect PWB and engine PWB (YC4)
Different type of the developer unit is installed. Install the correct developer unit.

Code: 7404
Description: Developer unit Y type mismatch error
Absence of the developer unit Y is detected.
Causes: Defective connector cable or poor contact in the connector. Different type of the developer unit is installed.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer unit Y and drum connect PWB (YC6) Drum connect PWB and engine PWB (YC4)
Different type of the developer unit is installed. Install the correct developer unit.

Code: 7411
Description: Drum unit K type mismatch problem
Absence of the drum unit K is detected.
Causes: Drum unit connector inserted incorrectly. Different type of the drum unit is installed.
Remedy: Drum unit connector inserted incorrectly. Reinsert the drum unit K connector if necessary.
Different type of the drum unit is installed. Install the correct drum unit.

Code: 7412
Description: Drum unit C type mismatch problem
Absence of the drum unit C is detected.
Causes: Drum unit connector inserted incorrectly.s installed. Different type of the drum unit is installed.
Remedy: Drum unit connector inserted incorrectly. Reinsert the drum unit C connector if necessary.
Different type of the drum unit is installed. Install the correct drum unit.

Code: 7413
Description: Drum unit M type mismatch problem
Absence of the drum unit M is detected.
Causes: Drum unit connector inserted incorrectly.s installed. Different type of the drum unit is installed.
Remedy: Drum unit connector inserted incorrectly. Reinsert the drum unit M connector if necessary.
Different type of the drum unit is installed. Install the correct drum unit.

Code: 7414
Description: Drum unit Y type mismatch problem
Absence of the drum unit Y is detected.
Causes: Drum unit connector inserted incorrectly. Different type of the drum unit is installed.
Remedy: Drum unit connector inserted incorrectly. Reinsert the drum unit Y connector if necessary.
Different type of the drum unit is installed. Install the correct drum unit.

Code: 7420
Description: Transfer belt unit type mismatch problem
bsence of the transfer belt unit is detected.
Causes: Transfer belt unit connector inserted incorrectly. Different type of the transfer belt unit is installed.
Remedy: Transfer belt unit connector inserted incorrectly. Reinsert the transfer belt unit connector if necessary.
Different type of the transfer belt unit is installed. Install the correct transfer belt unit.

Code: 7601
Description: ID sensor 1 (front) error
Causes: Defective ID sensor. Defective PWB.
Remedy: Defective ID sensor. Replace the ID sensor 1.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7602
Description: ID sensor 2 (rear) error
Causes: Defective ID sensor. Defective PWB.
Remedy: Defective ID sensor. Replace the ID sensor 2.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7611
Description: ID sensor (K) density error
When the concentration in a bias calibration is unusual.
Causes: Defective ID sensor. Defective PWB.
Remedy: Defective ID sensor. Replace the ID sensor.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7612
Description: ID sensor (C) density error
When the concentration in a bias calibration is unusual.
Causes: Defective ID sensor. Defective PWB.
Remedy: Defective ID sensor. Replace the ID sensor.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7613
Description: ID sensor (M) density error
When the concentration in a bias calibration is unusual.
Causes: Defective ID sensor. Defective PWB.
Remedy: Defective ID sensor. Replace the ID sensor.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7614
Description: ID sensor (Y) density error
When the concentration in a bias calibration is unusual.
Causes: Defective ID sensor. Defective PWB.
Remedy: Defective ID sensor. Replace the ID sensor.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7620
Description: ID sensor timing error
Color registration correction was failed.
Causes: Defective ID sensor. Defective PWB.
Remedy: Defective ID sensor. Replace the ID sensor.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7800
Description: Broken external thermistor wire
The external thermistor delivers 0.3V or more.
Causes: Defective connector cable or poor contact in the connector. Defective temperature sensor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Temperature sensor and engine PWB (YC29)
Defective temperature sensor. Replace the temperature sensor.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7810
Description: Short-circuited external thermistor wire
external thermistor delivers 3V or more.
Causes: Defective connector cable or poor contact in the connector. Defective temperature sensor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Temperature sensor and engine PWB (YC29)
Defective temperature sensor. Replace the temperature sensor.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7901
Description: Drum unit K EEPROM error
No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Causes: Poor contact in the connector terminals. Defective drum PWB. Defective PWB.
Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit (K) and drum connect PWB(YC5) drum connect PWB and engine connect PWB (YC4) Engine connect PWB and engine PWB (YC9)
Defective drum PWB. Replace the drum unit K.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7902
Description: Drum unit C EEPROM error
No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Causes: Poor contact in the connector terminals. Defective drum PWB. Defective PWB.
Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit (C) and drum connect PWB(YC3) drum connect PWB and engine connect PWB (YC4) Engine connect PWB and engine PWB (YC9)
Defective drum PWB. Replace the drum unit C.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7903
Description: Drum unit M EEPROM error
No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Causes: Poor contact in the connector terminals. Defective drum PWB. Defective PWB.
Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit (M) and drum connect PWB(YC4) drum connect PWB and engine connect PWB (YC4) Engine connect PWB and engine PWB (YC9)
Defective drum PWB. Replace the drum unit M.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7904
Description: Drum unit Y EEPROM error
No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Causes: Poor contact in the connector terminals. Defective drum PWB. Defective PWB.
Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit (Y) and drum connect PWB(YC2) drum connect PWB and engine connect PWB (YC4) Engine connect PWB and engine PWB (YC9)
Defective drum PWB. Replace the drum unit Y.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7911
Description: Developer unit K EEPROM error
No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Causes: Poor contact in the connector terminals. Defective developer PWB. Defective PWB.
Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer unit (K) and drum connect PWB(YC9) drum connect PWB and engine connect PWB (YC4) Engine connect PWB and engine PWB (YC12)
Defective developer PWB. Replace the developer unit K.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7912
Description: Developer unit C EEPROM error
No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Causes: Poor contact in the connector terminals. Defective developer PWB. Defective PWB.
Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer unit (C) and drum connect PWB(YC7) drum connect PWB and engine connect PWB (YC4) Engine connect PWB and engine PWB (YC12)
Defective developer PWB. Replace the developer unit C.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7913
Description: Developer unit M EEPROM error
No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Causes: Poor contact in the connector terminals. Defective developer PWB. Defective PWB.
Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer unit (M) and drum connect PWB(YC8) drum connect PWB and engine connect PWB (YC4) Engine connect PWB and engine PWB (YC12)
Defective developer PWB. Replace the developer unit M.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 7914
Description: Developer unit Y EEPROM error
No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Causes: Poor contact in the connector terminals. Defective developer PWB. Defective PWB.
Remedy: Poor contact in the connector terminals. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Developer unit (Y) and drum connect PWB(YC6) drum connect PWB and engine connect PWB (YC4) Engine connect PWB and engine PWB (YC12)
Defective developer PWB. Replace the developer unit Y.
Defective PWB. Replace the engine PWB check for correct operation.

Code: 8030
Description: Tray upper limit detection problem (document finisher)
When the tray elevation motor raises a tray, the ON status of the tray upper limit sensor is detected.
Causes: Defective connector cable or poor contact in the connector. Defective tray upper limit sensor, paper surface sensor 1/2. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Tray upper limit sensor and DF main PWB (CN5) Paper surface sensor 1/2 and DF main PWB (CN6)
Defective tray upper limit sensor, paper surface sensor 1/2. Replace the sensor.
Defective PWB. Replace the DF main PWB and check for correct operation.

Code: 8040
Description: Belt problem (document finisher)
The belt sensor does not turn on/off within specified time of the belt solenoid turning on.
Causes: Defective connector cable or poor contact in the connector. Defective belt sensor. Defective belt solenoid. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Belt sensor and DF main PWB (CN10) Belt solenoid and DF main PWB (CN21)
Defective belt sensor. Replace the belt sensor.
Defective belt solenoid. Replace the belt solenoid.
Defective PWB. Replace the DF main PWB and check for correct operation.

Code: 8140
Description: Tray elevation motor problem (document finisher)
The tray low limit sensor or paper surface sensor 1/2 cannot be detected to be on within 10 s since the tray elevation motor is activated.
Causes: Defective connector cable or poor contact in the connector. Defective connector cable or poor contact in the connector. The tray elevation motor malfunctions. Defective tray lower limit sensor, paper surface sensor 1/2. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Tray elevation motor and DF main PWB (CN15)
Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Tray lower limit sensor, and DF main PWB (CN5) Paper surface sensor 1/2 and DF main PWB (CN6)
The tray elevation motor malfunctions. Replace the tray elevation motor.
Defective tray lower limit sensor, paper surface sensor 1/2. Replace the sensor.
Defective PWB. Replace the DF main PWB and check for correct operation.

Code: 8210
Description: Stapler problem (document finisher)
Jam 7013 or 7023 is indicated.
Causes: Defective connector cable of staple or poor contact in the connector. The stapler is blocked with a staple. The stapler is broken. Defective PWB.
Remedy: Defective connector cable of staple or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable.
The stapler is blocked with a staple. Remove the stapler cartridge, and check the cartridge and the stapling section of the stapler.
The stapler is broken. Replace the stapler and check for correct operation.
Defective PWB. Replace the DF main PWB and check for correct operation.

Code: 8320
Description: Adjustment motor 2 problem (document finisher)
The adjustment sensor 2 does not turn on/off within specified time of the adjustment motor 2 turning on.
Causes: Defective connector cable or poor contact in the connector. Defective adjustment sensor 2. Defective adjustment motor 2. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Adjustment motor 2 and DF main PWB (CN18) Adjustment sensor 2 and DF main PWB (CN7)
Defective adjustment sensor 2. Replace the adjustment sensor 2.
Defective adjustment motor 2. Replace the adjustment motor 2.
Defective PWB. Replace the DF main PWB and check for correct operation.

Code: 8330
Description: Adjustment motor 1 problem (document finisher)
The adjustment sensor 1 does not turn on/off within specified time of the adjustment motor 1 turning on.
Causes: Defective connector cable or poor contact in the connector. Defective adjustment sensor 1. Defective adjustment motor 1. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Adjustment motor 1 and DF main PWB (CN18) Adjustment sensor 1 and DF main PWB (CN7)
Defective adjustment sensor 1. Replace the adjustment sensor 1.
Defective adjustment motor 1. Replace the adjustment motor 1.
Defective PWB. Replace the DF main PWB and check for correct operation.

Code: 8350
Description: Roller motor problem (document finisher)
The roller sensor does not turn on/off within specified time of the roller motor turning on.
Causes: Defective connector cable or poor contact in the connector. Defective roller sensor. Defective roller motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Roller motor and DF main PWB (CN20) Roller sensor and DF main PWB (CN11)
Defective roller sensor. Replace the roller sensor.
Defective roller motor. Replace the roller motor.
Defective PWB. Replace the DF main PWB and check for correct operation.

Code: 8360
Description: Slide motor problem (document finisher)
The slide sensor does not turn on/off within specified time of the slide motor turning on.q
Causes: Defective connector cable or poor contact in the connector. Defective slide sensor. Defective slide motor. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Slide motor and DF main PWB (CN14) Slide sensor and DF main PWB (CN22)
Defective slide sensor. Replace the slide sensor.
Defective slide motor. Replace the slide motor.
Defective PWB. Replace the DF main PWB and check for correct operation.

Code: 8460
Description: EEPROM problem (document finisher)
Reading from or writing to EEPROM cannot be performed.
Causes: Defective EEPROM or DF main PWB.
Remedy: Replace the DF main PWB and check for correct operation.

Code: 8800
Description: Document finisher communication error
A communication error is detected 10 times in succession.
Causes: Defective connector cable or poor contact in the connector. Defective DF main PWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Engine PWB (YC9) and Engine connect PWB (YC1) Engine connect PWB (YC7) and DF relay PWB (YC2) DF relay PWB (YC3) and DF main PWB (CN1)
Defective DF main PWB. Replace the DF main PWB and check for correct operation.
Defective PWB. Replace the engine PWB and check for correct operation.

Code: 8830
Description: Bridge communication error (document finisher)
A communication error is detected 10 times in succession.
Causes: Defective connector cable or poor contact in the connector. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Engine PWB (YC9) and Engine connect PWB (YC1) Engine connect PWB (YC7) and DF relay PWB (YC2) DF relay PWB (YC4) and bridge PWB (YC5)
Defective PWB. Replace the bridge PWB or the engine PWB and check for correct operation.

Code: 8990
Description: Backup memory data problem (document finisher)
Read and write data does not match 3 times in succession.
Causes: Defective connector cable or poor contact in the connector. EEPROM installed incorrectly. Defective finisher main PWB.
Remedy: Defective connector cable or poor contact in the connector. Check the connection of connector on the finisher main PWB and the connector of the machine, and the continuity across the connector terminals. Repair or replace if necessary.
EEPROM installed incorrectly. Install EEPROM correctly.
Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

Code: 9000
Description: Document processor communication error
A communication error is detected 10 times in succession
Causes: Defective connector cable or poor contact in the connector. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. DP main PWB and ISC PWB (YC12)
Defective PWB. Replace the DP main PWB or the ISC PWB and check for correct operation.

Code: 9010
Description: Coin vender communication error
A communication error from coin vender is detected 10 times in succession
Causes: Defective connector cable or poor contact in the connector. Data setup failure. Defective coin vender control PWB. Defective PWB.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable.
Data setup failure. Set maintenance mode U206 to off when a coin vender is not installed.
Defective coin vender control PWB. Replace the coin vender control PWB.
Defective PWB. Replace the video PWB and check for correct operation.

Code: 9060
Description: DP EEPROM error
Mismatch between writing data and reading data occurs three times successively. Mismatch of reading data from two locations occurs three times successively.
Causes: Defective PWB. Device damage of EEPROM.
Remedy: Defective PWB. Replace the DP main PWB and check for correct operation.
Device damage of EEPROM. Contact the Service Administrative Division.

Code: 9100
Description: Coin vender control PWB error
Communication error has been detected at the coin mec of the coin vender control PWB.
Causes: Defective coin vender control PWB.
Remedy: Replace the coin mec.

Code: 9110
Description: Coin vender error
Communication error has been detected in connection with the coin mec and the rejector.
Causes: Rejector installed incorrectly. Defective rejector.
Remedy: Rejector installed incorrectly. Check the rejector is properly installed and, if not, perform the corrective action.
Defective rejector. Replace the rejector.

Code: 9120
Description: Sensor error in coin vender change (Yen 10)
Change is empty despite change is enough.
Causes: Coin jam in the change tube. Poor contact in the connector. Defective change empty sensor. Defective coin vender control PWB.
Remedy: Coin jam in the change tube Check visually and remedy.
Poor contact in the connector. Check if the change empty sensor is intact.
Defective change empty sensor. Defective coin vender control PWB. Replace the coin mec.

Code: 9130
Description: Sensor error in coin vender change (Yen 50)
Change is empty despite change is enough.
Causes: Coin jam in the change tube. Poor contact in the connector. Defective change empty sensor. Defective coin vender control PWB.
Remedy: Coin jam in the change tube Check visually and remedy.
Poor contact in the connector. Check if the change empty sensor is intact.
Defective change empty sensor. Defective coin vender control PWB. Replace the coin mec.

Code: 9140
Description: Sensor error in coin vender change (Yen 100)
Change is empty despite change is enough.
Causes: Coin jam in the change tube. Poor contact in the connector. Defective change empty sensor. Defective coin vender control PWB.
Remedy: Coin jam in the change tube Check visually and remedy.
Poor contact in the connector. Check if the change empty sensor is intact.
Defective change empty sensor. Defective coin vender control PWB. Replace the coin mec.

Code: 9150
Description: Sensor error in coin vender change (Yen 500)
Change is empty despite change is enough.
Causes: Coin jam in the change tube. Poor contact in the connector. Defective change empty sensor. Defective coin vender control PWB.
Remedy: Coin jam in the change tube Check visually and remedy.
Poor contact in the connector. Check if the change empty sensor is intact.
Defective change empty sensor. Defective coin vender control PWB. Replace the coin mec.

Code: 9160
Description: Coin vender pay-out error
Coin is paid out despite the pay-out motor is determined not active.
Causes: Defective pay-out motor.
Remedy: Replace the coin mec.

Code: 9170
Description: Coin vender pay-out sensor error
Coin is paid out despite the pay-out motor is determined not active.
Causes: Change jam at the pay-out. Defective pay-out motor. Defective pay-out sensor.
Remedy: Change jam at the pay-out. Check visually and remedy.
Defective pay-out motor. Defective pay-out sensor. Replace the coin mec.

Code: 9500 … 9550
Description: Contact the Service Administrative Division.
Causes:
Remedy: Contact the Service Administrative Division.

Code: F000
Description: Main PWB – operation panel PWB communication error
Causes: Defective main PWB. Defective operation panel PWB.
Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
Defective operation panel PWB. Replace the operation panel PWB and check for correct operation.

Code: F010 … F013
Description: Main PWB checksum error
Causes: Defective main PWB.
Remedy: Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.

Code: F040
Description: Main PWB – print engine communication error
Causes: Defective main PWB. Defective engine PWB.
Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
Defective engine PWB. Replace the engine PWB and check for correct operation.

Code: F041
Description: Communication error between main PWB and scanner engine.
Causes: Defective main PWB. Defective ISC PWB.
Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
Defective ISC PWB. Replace the ISC PWB and check for correct operation.

Code: F050
Description: Print engine ROM checksum error.
Causes: Defective engine PWB.
Remedy: Turn the main power switch off/on to restart the machine. If the error is not resolved, replace engine PWB.

Code: F051
Description: Scanner engine ROM checksum error
Causes: Defective Scanner software. Defective ISC PWB.rror
Remedy: Defective Scanner software. Install the Scanner software.
Defective ISC PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace ISC PWB.

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Fixing Kyocera TASKalfa 2550ci Printer Error Codes in details

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