Brother MFC-L8610CDW fix error codes list

Brother MFC-L8610CDW fix error codes list

– Compatible Printer model: Brother MFC-L8610CDW
– Brother MFC-L8610CDW Error Codes with instructions guide:

• Code: 0101
• Description: ASIC error or motor driver error occurred.
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Code: 0201
• Description: Cannot detect the synchronized signal of the paper feed motor. The speed of the paper feed motor does not stabilize within the specified time.
• Remedy: 1 Connection failure of the paper feed motor harness Reconnect the paper feed motor harness.
  2 Connection failure of the low-voltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  3 Damaged parts in paper feed drive unit Replace the paper feed drive unit.
  4 Damaged fuser unit Replace the fuser unit.
  5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 0202
• Description: Cannot detect the synchronized signal of the process motor. The speed of the process motor does not stabilize within the specified time.
• Remedy: 1 Connection failure of the process motor harness Reconnect the process motor harness.
  2 Connection failure of the low-voltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  3 Damaged parts in process drive unit Replace the process drive unit.
  4 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 0300
• Description: Cannot detect the lock signal of the polygon motor for the laser unit.
• Remedy: 1 Connection failure of the polygon motor harness Reconnect the polygon motor harness.
  2 Laser unit failure Replace the laser unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 0401
• Description: BD sensor 1 failure
• Remedy: <User Check> • There is a possibility of condensation. Turn the power switch OFF and ON, then open the front cover and the back cover and leave the machine more than 30 minutes.
  1 Connection failure of the LD PCB harness Reconnect the LD PCB harness.
  2 Laser unit failure Replace the laser unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 0402
• Description: BD sensor 4 failure
• Remedy: <User Check> • There is a possibility of condensation. Turn the power switch OFF and ON, then open the front cover and the back cover and leave the machine more than 30 minutes.
  1 Connection failure of the LD PCB harness Reconnect the LD PCB harness.
  2 Laser unit failure Replace the laser unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 0501
• Description: The center thermistor of the fuser unit has not reached the specified temperature within the specified time.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Code: 0502
• Description: The center thermistor of the fuser unit has not reached the specified temperature within the specified time after it was heated normally to the certain level.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Code: 0503
• Description: The center thermistor of the fuser unit detected a temperature higher than the specified value.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Code: 0504
• Description: After the heat unit was heated normally, the center thermistor of the fuser unit detected a temperature lower than the specified value.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Code: 0505
• Description: The center thermistor of the fuser unit detected a temperature rise greater than the specified value within the specified time.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Code: 0506
• Description: The center thermistor of the fuser unit detected a temperature fall greater than the specified value within the specified time.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. 8 Main PCB failure Replace the main PCB ASSY.

• Code: 050A
• Description: The hardware detected a temperature error through the center thermistor or the side thermistor of the fuser unit.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  8 Main PCB failure Replace the main PCB ASSY.

• Code: 050B
• Description: When the center thermistor of the fuser unit was lower than the idle temperature, the side thermistor detected a temperature higher than the specified temperature.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  8 Main PCB failure Replace the main PCB ASSY.

• Code: 050C
• Description: When the center thermistor of the fuser unit was higher than the idle temperature, the side thermistor detected a temperature lower than the specified temperature.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Connection failure of the center or side thermistor harness of the fuser unit Reconnect the center or side thermistor harness of the fuser unit.
  2 Connection failure of the fuser unit heater harness Reconnect the fuser unit heater harness.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Connection failure of the lowvoltage power supply PCB harness Reconnect the low-voltage power supply PCB harness.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Fuser unit failure Replace the fuser unit.
  7 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  8 Main PCB failure Replace the main PCB ASSY.

• Code: 0800
• Description: An error occurred in the internal temperature sensor.
• Remedy: 1 Connection failure of the internal temperature sensor harness Reconnect the internal temperature sensor harness.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 0900
• Description: Detected irregular power supply for more than 100 times.
• Remedy: <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.
  1 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the irregular power supply detection counter after the replacement.
  2 Main PCB failure Replace the main PCB ASSY.
  Note: The irregular power supply detection error (Error code 0900) of the low-voltage power supply PCB occurs when there is a large distortion in the power supply voltage supplied to the machine. In this case, if the same power supply is used, the same error might occur again even if the low-voltage power supply PCB ASSY is replaced. For this reason, be sure to ask the user to rearrange the installation environment.

• Code: 0A01
• Description: Detected a blower failure.
• Remedy: 1 Foreign object inside the blower Remove the foreign object.
  2 Connection failure of the blower harness Reconnect the blower harness.
  3 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  4 Blower failure Replace the blower.
  5 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 0A02
• Description: Detected a fuser fan failure.
• Remedy: 1 Connection failure of the fuser fan harness Reconnect the fuser fan harness.
  2 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  3 Fuser fan failure Replace the fuser fan.
  4 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 0A03
• Description: Detected a power fan failure.
• Remedy: 1 Connection failure of the power fan harness Reconnect the power fan harness.
  2 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  3 Power fan failure Replace the power fan.
  4 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 0B01
• Description: An error occurred in the high-voltage power supply PCB ASSY while operating.
• Remedy: <User Check>
  • Slide the green tab of the drum unit to left and right for two to three times to clean the corona wire for all the four colors.
  • There is a possibility of condensation. Turn the power switch OFF and ON, then open the front cover and the back cover and leave the machine more than 30 minutes.
  • Replace the drum unit.
  1 Dirt on the machine, the drum unit, the belt unit and the waste toner box terminal. Clean the machine, the drum unit, the belt unit and the waste toner box terminal.
  2 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 0B02
• Description: An error occurred in the high-voltage power supply PCB ASSY when the machine was in the ready state.
• Remedy: <User Check>
  • Slide the green tab of the drum unit to left and right for two to three times to clean the corona wire for all the four colors.
  • There is a possibility of condensation. Turn the power switch OFF and ON, then open the front cover and the back cover and leave the machine more than 30 minutes.
  • Replace the drum unit.
  1 Dirt on the machine, the drum unit, the belt unit and the waste toner box terminal. Clean the machine, the drum unit, the belt unit and the waste toner box terminal.
  2 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 0C00
• Description: An error occurred in the density sensor.
• Remedy: 1 Connection failure of the registration mark sensor L PCB harness Reconnect the registration mark sensor L PCB harness.
  2 Registration mark sensor L PCB failure Replace the registration mark sensor unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 1003
• Description: The registration mark sensor R is dirty and cannot normally receive reflected light.
• Remedy: <User Check>
  • Clean the dirt on the belt unit or replace the belt unit.
  • Replace the waste toner box.
  1 Dirt on the registration mark sensor R Clean the registration mark sensor R part of the registration mark sensor R PCB.
  2 Dirt by toner inside the machine Clean inside of the machine.
  3 Registration mark sensor R PCB failure Replace the registration mark sensor unit.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 1004
• Description: The registration mark sensor L is dirty and cannot normally receive reflected light.
• Remedy: <User Check>
  • Clean the dirt on the belt unit or replace the belt unit.
  • Replace the waste toner box.
  1 Dirt on the registration mark sensor L Clean the registration mark sensor L part of the registration mark sensor L PCB.
  2 Dirt by toner inside the machine Clean inside of the machine.
  3 Registration mark sensor L PCB failure Replace the registration mark sensor unit.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 1400
• Description: Condensation occurred in the machine.
• Remedy: <User Check>
  • Open the front and back covers and leave them for 30 minutes or more with the power ON. After that, close the front and back covers and turn OFF and ON the power switch.
  1 Main PCB failure Replace the main PCB ASSY.
  2 Laser unit failure Replace the laser unit.

• Code: 1500
• Description: An error occurred in the paper eject origin sensor.
• Remedy: 1 Connection failure of the paper eject origin sensor harness Reconnect the paper eject origin sensor harness.
  2 Paper eject origin sensor failure Replace the paper eject origin sensor.
  3 Paper eject ASSY failure Replace the paper eject ASSY.

• Code: 1701
• Description: Detected a TT fan failure.
• Remedy: 1 Malfunction of the TT control PCB Install the latest main firmware.
  2 Connection failure of the TT fan harness Reconnect the TT fan harness.
  3 LT/TT connector failure (machine side or TT side) Replace the LT/TT connector of the machine side or TT side.
  4 TT fan failure Replace the TT fan.
  5 TT control PCB failure Replace the TT control PCB.
  6 TT joint relay PCB failure Replace the TT joint unit.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 1801
• Description: A communication error occurred between the main PCB and T2LT control PCB ASSY. (LT only)
• Remedy: 1 Malfunction of the LT control PCB Install the latest main firmware.
  2 An LT/TT connector failure (machine side or LT side) Replace the appropriate LT/TT connector of the machine side or LT side.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 1802
• Description: A communication error occurred between the main PCB and T3LT control PCB ASSY. (LT only)
• Remedy: 1 Malfunction of the LT control PCB Install the latest main firmware.
  2 An LT/TT connector failure (machine side or LT side) Replace the appropriate LT/TT connector of the machine side or LT side.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 1803
• Description: A communication error occurred between the main PCB and T4LT control PCB ASSY. (LT only)
• Remedy: 1 Malfunction of the LT control PCB Install the latest main firmware.
  2 An LT/TT connector failure (machine side or LT side) Replace the appropriate LT/TT connector of the machine side or LT side.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 1808
• Description: A communication error occurred between the main PCB and TT control PCB ASSY.
• Remedy: 1 Malfunction of the TT control PCB Install the latest main firmware.
  2 LT/TT connector failure (machine or LT/TT joint unit side) Replace the LT/TT connector on the machine side or LT/TT joint unit side.
  3 TT control PCB failure Replace the TT control PCB.
  4 TT joint relay PCB failure Replace the TT joint unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 1901
• Description: Detected a TT motor failure.
• Remedy: 1 Malfunction of the TT control PCB Install the latest main firmware.
  2 Connection failure of the TT motor harness Reconnect the TT motor harness.
  3 LT/TT connector failure (machine or LT/TT joint unit side) Replace the LT/TT connector on the machine side or LT/TT joint unit side.
  4 TT motor failure Replace the TT motor.
  5 TT control PCB failure Replace the TT control PCB.
  6 TT joint relay PCB failure Replace the TT joint unit.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 1C00
• Description: Unable to detect scan signal of Laser unit EEPROM.
• Remedy: 1 Connection failure of the laser unit flat cable Reconnect the laser unit flat cable.
  2 Laser unit flat cable failure Replace the laser unit flat cable.
  3 Laser unit failure Replace the laser unit.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 1F02
• Description: TT mount sensor 1 to 4 detected that screw was not tighten surely when connecting TT.
• Remedy: 1 Connection failure of the TT mount sensor 1 to 4 harness Reconnect the TT mount sensor 1 to 4 harness.
  2 Connection failure of the TT joint relay PCB harness Reconnect the TT joint relay PCB harness.
  3 TT mount sensor 1 to 4 attachment failure Reattach the TT mount sensor 1 to 4.
  4 LT/TT connector failure (machine or TT joint unit side) Replace the LT/TT connector on the machine side or TT joint unit side.
  5 TT mount sensor 1 to 4 failure Replace the TT joint unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 3801
• Description: A temperature error occurred in the external temperature/humidity sensor.
• Remedy: 1 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  2 External temperature/humidity sensor failure Replace the high-voltage power supply PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 3A00
• Description: A communication error occurred between the controller and engine in main PCB.
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Code: 3B01
• Description: T2 drive transmit sensor detected that the error occurred in connection of machine drive.
• Remedy: 1 Connection failure of the LT drive transmit sensor PCB harness Reconnect the LT drive transmit sensor PCB harness.
  2 Connection failure of the LT control PCB harness Reconnect the LT control PCB harness.
  3 LT drive transmit sensor PCB failure Replace the LT drive transmit sensor PCB.
  4 LT control PCB failure Replace the LT control PCB ASSY.
  5 LT drive gear failure Replace the LT unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 3B02
• Description: T3 drive transmit sensor detected that the error occurred in connection of machine drive.
• Remedy: 1 Connection failure of the LT drive transmit sensor PCB harness Reconnect the LT drive transmit sensor PCB harness.
  2 Connection failure of the LT control PCB harness Reconnect the LT control PCB harness.
  3 LT drive transmit sensor PCB failure Replace the LT drive transmit sensor PCB.
  4 LT control PCB failure Replace the LT control PCB ASSY.
  5 LT drive gear failure Replace the LT unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 3B03
• Description: T4 drive transmit sensor detected that the error occurred in connection of machine drive.
• Remedy: 1 Connection failure of the LT drive transmit sensor PCB harness Reconnect the LT drive transmit sensor PCB harness.
  2 Connection failure of the LT control PCB harness Reconnect the LT control PCB harness.
  3 LT drive transmit sensor PCB failure Replace the LT drive transmit sensor PCB.
  4 LT control PCB failure Replace the LT control PCB ASSY.
  5 LT drive gear failure Replace the LT unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 4000
• Description: Number of the drum unit rotations reaches the upper limit soon.
• Remedy: <User Check> • Prepare a new drum unit.
  1 Replace the drum unit with a new one and reset the drum counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4000
• Description: Number of the drum unit rotations reaches the upper limit soon.
• Remedy: <User Check> • Prepare a new belt unit.
  1 Replace the belt unit with a new one and reset the belt counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4200
• Description: Number of the drum unit rotations has reached the upper limit. (Printing does not stop.)
• Remedy: <User Check> • Prepare a new drum unit.
  1 Replace the drum unit with a new one and reset the drum counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4200
• Description: Number of the drum unit rotations has reached the upper limit. (Printing does not stop.)
• Remedy: <User Check> • Prepare a new belt unit.
  1 Replace the belt unit with a new one and reset the belt counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4300
• Description: Number of pages printed with the belt unit will reach the upper limit soon. (90%)
• Remedy: <User Check> • Prepare a new belt unit.
  1 Replace the belt unit with a new one and reset the belt counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4400
• Description: Number of pages printed with the belt unit has reached the upper limit. (Printing does not stop.)
• Remedy: <User Check> • Prepare a new belt unit.
  1 Replace the belt unit with a new one and reset the belt counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4500
• Description: Number of used pages for the fuser unit has reached the upper limit. (Printing does not stop.)
• Remedy: 1 End of life of the fuser unit Replace the fuser unit. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the fuser unit counter after the replacement.
  2 Replace the fuser unit with a new one and reset the fuser unit counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4600
• Description: Number of pages printed with the laser unit has reached the upper limit.
• Remedy: 1 End of life of the laser unit Replace the laser unit. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the laser unit counter after the replacement.
  2 Replace the laser unit with a new one and reset the laser unit counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

Solved Brother MFC-L8610CDW Error codes

• Code: 4700
• Description: The waste toner sensor detected that the waste toner box is almost full.
• Remedy: <User Check> • Replace the waste toner box.
  1 Connection failure of the waste toner sensor harness Reconnect the waste toner sensor harness.
  2 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 4800
• Description: After the waste toner sensor detected that the waste toner box was almost full, pages more than the specified number have been printed.
• Remedy: <User Check> • Replace the waste toner box.
  1 Connection failure of the waste toner sensor harness Reconnect the waste toner sensor harness.
  2 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 4900
• Description: Belt cleaner detected that smaller voltage than the specified one and detected almost end of life of the Waste toner box.
• Remedy: <User Check> • Replace the waste toner box.
  1 Connection failure of the waste toner sensor harness Reconnect the waste toner sensor harness.
  2 Connection failure of the highvoltage power supply PCB harness Reconnect the high-voltage power supply PCB harness.
  3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 4B01
• Description: Dot counter of the toner cartridge (Black) or develop roller counter reaches the upper limit soon.
• Remedy: <User Check> • Prepare a new toner cartridge.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 4B02
• Description: Dot counter of the toner cartridge (Yellow) or develop roller counter reaches the upper limit soon.
• Remedy: <User Check> • Prepare a new toner cartridge.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 4B03
• Description: Dot counter of the toner cartridge (Magenta) or develop roller counter reaches the upper limit soon.
• Remedy: <User Check> • Prepare a new toner cartridge.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 4B04
• Description: Dot counter of the toner cartridge (Cyan) or develop roller counter reaches the upper limit soon.
• Remedy: <User Check> • Prepare a new toner cartridge.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 4C01
• Description: Dot counter of the toner cartridge (Black) or develop roller counter has reached the upper limit was detected.
• Remedy: <User Check> • Replace the toner cartridge whose counter reached the upper limit.
  1 Replace the toner cartridge with a new one and reset the toner counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4C02
• Description: Dot counter of the toner cartridge (Yellow) or develop roller counter has reached the upper limit was detected.
• Remedy: <User Check> • Replace the toner cartridge whose counter reached the upper limit.
  1 Replace the toner cartridge with a new one and reset the toner counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4C03
• Description: Dot counter of the toner cartridge (Magenta) or develop roller counter has reached the upper limit was detected.
• Remedy: <User Check> • Replace the toner cartridge whose counter reached the upper limit.
  1 Replace the toner cartridge with a new one and reset the toner counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4C04
• Description: Dot counter of the toner cartridge (Cyan) or develop roller counter has reached the upper limit was detected.
• Remedy: <User Check> • Replace the toner cartridge whose counter reached the upper limit.
  1 Replace the toner cartridge with a new one and reset the toner counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4C05
• Description: During printing, dot counter of color toner cartridge or develop roller counter has reached the upper limit was detected.
• Remedy: <User Check> • Replace the toner cartridge whose counter reached the upper limit.
  1 Replace the toner cartridge with a new one and reset the toner counter. If the error display is not cleared, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4F01
• Description: The new toner sensor of the toner cartridge (Black) could not detect a new cartridge properly.
• Remedy: <User Check>
  • Replace the toner cartridge with a new toner cartridge again.
  • If the machine is on the uneven surface, place it on a level surface.
  1 Connection failure of the toner/ new sensor PCB harness Reconnect the toner/new sensor PCB harness.
  2 New toner actuator coming off or caught in some sections of the machine Reattach the new toner actuator.
  3 New toner sensor failure Replace the toner/new sensor PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 4F02
• Description: The new toner sensor of the toner cartridge (Yellow) could not detect a new cartridge properly.
• Remedy: <User Check>
  • Replace the toner cartridge with a new toner cartridge again.
  • If the machine is on the uneven surface, place it on a level surface.
  1 Connection failure of the toner/ new sensor PCB harness Reconnect the toner/new sensor PCB harness.
  2 New toner actuator coming off or caught in some sections of the machine Reattach the new toner actuator.
  3 New toner sensor failure Replace the toner/new sensor PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 4F03
• Description: The new toner sensor of the toner cartridge (Magenta) could not detect a new cartridge properly.
• Remedy: <User Check>
  • Replace the toner cartridge with a new toner cartridge again.
  • If the machine is on the uneven surface, place it on a level surface.
  1 Connection failure of the toner/ new sensor PCB harness Reconnect the toner/new sensor PCB harness.
  2 New toner actuator coming off or caught in some sections of the machine Reattach the new toner actuator.
  3 New toner sensor failure Replace the toner/new sensor PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 4F04
• Description: The new toner sensor of the toner cartridge (Cyan) could not detect a new cartridge properly.
• Remedy: <User Check>
  • Replace the toner cartridge with a new toner cartridge again.
  • If the machine is on the uneven surface, place it on a level surface.
  1 Connection failure of the toner/ new sensor PCB harness Reconnect the toner/new sensor PCB harness.
  2 New toner actuator coming off or caught in some sections of the machine Reattach the new toner actuator.
  3 New toner sensor failure Replace the toner/new sensor PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 5001
• Description: Number of used pages for the PF kit MP has reached the upper limit. (Printing does not stop.)
• Remedy: 1 End of life of the PF kit MP Replace the PF kit MP. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the PF kit MP counter after the replacement.
  2 If the error display is not cleared after the PF kit MP counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5002
• Description: Number of used pages for the PF kit 1 has reached the upper limit. (Printing does not stop.)
• Remedy: 1 End of life of the PF kit 1 Replace the PF kit 1. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the PF kit 1 counter after the replacement.
  2 If the error display is not cleared after the PF kit 1 counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5003
• Description: Number of used pages for the PF kit 2 has reached the upper limit. (Printing does not stop.)
• Remedy: 1 End of life of the PF kit 2 Replace the PF kit 2. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the PF kit 2 counter after the replacement.
  2 If the error display is not cleared after the PF kit 2 counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5004
• Description: Number of used pages for the PF kit 3 has reached the upper limit. (Printing does not stop.)
• Remedy: 1 End of life of the PF kit 3 Replace the PF kit 3. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the PF kit 3 counter after the replacement.
  2 If the error display is not cleared after the PF kit 3 counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5005
• Description: Number of used pages for the PF kit 4 has reached the upper limit. (Printing does not stop.)
• Remedy: 1 End of life of the PF kit 4 Replace the PF kit 4. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the PF kit 4 counter after the replacement.
  2 If the error display is not cleared after the PF kit 4 counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5006
• Description: Number of used pages for the PF kit 5 has reached the upper limit. (Printing does not stop.)
• Remedy: 1 End of life of the PF kit 5 Replace the PF kit 5. Refer to “1.3.35 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the PF kit 5 counter after the replacement.
  2 If the error display is not cleared after the PF kit 5 counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 6001
• Description: The front cover sensor detected that the front cover was open.
• Remedy: <User Check> • Close the front cover.
  1 Connection failure of the front cover sensor harness Reconnect the front cover sensor harness.
  2 Front cover failure Replace the front cover.
  3 Front cover sensor failure Replace the front cover sensor.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6004
• Description: The eject sensor detected that the fuser cover was open.
• Remedy: <User Check> • Close the fuser cover.
  1 Eject actuator coming off or caught in some sections of the machine Reattach the eject actuator.
  2 Fuser cover attachment failure Reattach the fuser cover.
  3 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  4 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 6101
• Description: The toner amount detection sensor detected that no toner cartridge (Black) was set.
• Remedy: <User Check> • Set the toner cartridge correctly.
  1 Connection failure of the toner amount detection sensor PCB (light reception) harness Reconnect the toner amount detection sensor PCB (light reception) harness.
  2 Toner amount detection sensor PCB (light reception) failure Replace the toner/new sensor PCB ASSY.
  3 Toner sensor (light emission) failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6102
• Description: The toner amount detection sensor detected that no toner cartridge (Yellow) was set.
• Remedy: <User Check> • Set the toner cartridge correctly.
  1 Connection failure of the toner amount detection sensor PCB (light reception) harness Reconnect the toner amount detection sensor PCB (light reception) harness.
  2 Toner amount detection sensor PCB (light reception) failure Replace the toner/new sensor PCB ASSY.
  3 Toner sensor (light emission) failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6103
• Description: The toner amount detection sensor detected that no toner cartridge (Magenta) was set.
• Remedy: <User Check> • Set the toner cartridge correctly.
  1 Connection failure of the toner amount detection sensor PCB (light reception) harness Reconnect the toner amount detection sensor PCB (light reception) harness.
  2 Toner amount detection sensor PCB (light reception) failure Replace the toner/new sensor PCB ASSY.
  3 Toner sensor (light emission) failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6104
• Description: The toner amount detection sensor detected that no toner cartridge (Cyan) was set.
• Remedy: <User Check> • Set the toner cartridge correctly.
  1 Connection failure of the toner amount detection sensor PCB (light reception) harness Reconnect the toner amount detection sensor PCB (light reception) harness.
  2 Toner amount detection sensor PCB (light reception) failure Replace the toner/new sensor PCB ASSY.
  3 Toner sensor (light emission) failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6200
• Description: The high-voltage output error of the corona charging terminal was detected and detected that the drum unit was not set.
• Remedy: <User Check> • Set the drum unit correctly.
  1 Dirt on the charge (corona wire) terminal of the drum unit and those of the machine Clean the charge (corona wire) terminal of the drum unit and those of the machine.
  2 Dirt on the high-voltage power supply PCB terminal Clean the high-voltage power supply PCB terminal.
  3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6300
• Description: The waste toner sensor detected that no waste toner box was set.
• Remedy: <User Check> • Re-insert the waste toner box in the correct position.
  1 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 6400
• Description: The registration mark sensor detected that no belt unit was set.
• Remedy: <User Check> • Re-insert the belt unit.
  1 Connection failure of the registration mark sensor L PCB harness Reconnect the registration mark sensor L PCB harness.
  2 Registration mark sensor L failure Replace the registration mark sensor unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 6801
• Description: The internal temperature sensor detected a temperature higher than the specified value.
• Remedy: <User Check>
  • Lower the room temperature.
  • Keep the machine away from heating appliances.
  • Check that the fan is not clogged.
  1 Connection failure of the internal temperature sensor harness Reconnect the internal temperature sensor harness.
  2 Fuser unit thermistor failure Replace the fuser unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 6901
• Description: Some fuser unit errors occurred at power-ON or upon recovery from sleep mode.
• Remedy: 1 Connection failure of a fuser unit harness Reconnect the fuser unit harness.
  2 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  3 Fuser unit failure Replace the fuser unit.
  4 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.
  Note: • Turn OFF the power switch. After the fuser unit has cooled sufficiently, turn ON the power switch again and leave the machine for 15 minutes. This problem may then be cleared. • To release the fuser unit error after taking appropriate measures, enter the maintenance mode once and quit it with the function code 99.

• Code: 6902
• Description: After the error was detected at the fuser unit, power was turned ON again and the error is being checked. (If power is turned OFF and ON after error code 6901 occurred, this code is displayed for about 15 minutes.)
• Remedy: 1 Connection failure of a fuser unit harness Reconnect the fuser unit harness.
  2 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  3 Fuser unit failure Replace the fuser unit.
  4 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.
  Note: • Turn OFF the power switch. After the fuser unit has cooled sufficiently, turn ON the power switch again and leave the machine for 15 minutes. This problem may then be cleared. • To release the fuser unit error after taking appropriate measures, enter the maintenance mode once and quit it with the function code 99.

• Code: 6A00
• Description: Electric discharge that may be caused by dirt on the corona wire of the drum unit was detected.
• Remedy: <User Check>
  • Slide the green tab of the drum unit to left and right for two to three times to clean the corona wire of all 4 colors.
  • Clean the electrode of the drum unit.
  • Replace the drum unit.
  1 Dirt on the GRID terminals of the machine Clean the GRID terminals of the machine.
  2 Dirt on the high-voltage power supply PCB terminal Clean the high-voltage power supply PCB terminal.
  3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6B01
• Description: Electric discharge was detected when the number of the drum unit rotations had become more than twice of the upper limit.
• Remedy: <User Check>
  • Slide the green tab of the drum unit to left and right for two to three times to clean the corona wire of all 4 colors.
  • Clean the electrode of the drum unit.
  • Replace the drum unit.
  1 Dirt on the GRID terminals of the machine Clean the GRID terminals of the machine.
  2 Dirt on the high-voltage power supply PCB terminal Clean the high-voltage power supply PCB terminal.
  3 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6C02
• Description: After the T2 is opened and closed or the power is turned ON, the T2 plate origin sensor detects that lift-up of the plate of the T2 is not completed within the specified period of time.
• Remedy: <User Check> • Open the T2 or T3 and close the T2 or T3 correctly.
  1 Connection failure of the LT paper empty/plate origin sensor PCB harness Reconnect the LT paper empty/plate origin sensor PCB harness.
  2 Connection failure of the LT connector upper/lower harness Reconnect the LT connector upper/lower harness.
  3 LT control PCB failure Replace the LT control PCB ASSY.
  4 Plate origin sensor failure Replace the LT paper empty/plate origin sensor PCB.
  5 LT drive gear failure Replace the LT unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 6C03
• Description: After the T3 is opened and closed or the power is turned ON, the T3 plate origin sensor detects that lift-up of the plate of the T3 is not completed within the specified period of time.
• Remedy: <User Check> • Open the T2 or T3 and close the T2 or T3 correctly.
  1 Connection failure of the LT paper empty/plate origin sensor PCB harness Reconnect the LT paper empty/plate origin sensor PCB harness.
  2 Connection failure of the LT connector upper/lower harness Reconnect the LT connector upper/lower harness.
  3 LT control PCB failure Replace the LT control PCB ASSY.
  4 Plate origin sensor failure Replace the LT paper empty/plate origin sensor PCB.
  5 LT drive gear failure Replace the LT unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 6D00
• Description: Detected more LTs than connectible limit, or the model unconnectable to TT connected to TT.
• Remedy: <User Check>
  • Reduce LTs to acceptable numbers.
  • Reconnect LTs.
  1 Dust around the LT/TT connector Clean the LT/TT connector.
  2 Malfunction of the LT control PCB or TT control PCB Install the latest main firmware.
  3 Machine or LT/TT connector failure Replace the machine or LT/TT connector.
  4 An LT control PCB failure Replace an LT control PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 6E00
• Description: The develop release sensor detected the develop roller disengagement or engagement failure.
• Remedy: 1 Connection failure of the develop release sensor harness Reconnect the develop release sensor harness.
  2 Develop release sensor failure Replace the develop release sensor PCB.
  3 Develop release clutch failure Replace the develop release drive unit.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6F00
• Description: Detected that supply power is unstable. (less than 100 times)
• Remedy: <User Check>
  • Turn the power switch OFF and then back ON again.
  • Use a noise filter on the power supply.
  1 The power supply waveform is incorrect Install a voltage stabilizer in the power supply part.

• Code: 7000
• Description: After the registration rear sensor detects paper pass, the eject sensor does not detect paper pass.
• Remedy: <User Check> • Remove the jammed paper.
  1 Foreign object inside the machine Remove the foreign object.
  2 Eject actuator coming off or caught in some sections of the machine Reattach the eject actuator.
  3 Fuser cover attachment failure Reattach the fuser cover.
  4 Connection failure of the eject sensor PCB harness Reconnect the eject sensor PCB harness.
  5 Damaged fuser drive gear Z25 Replace the fuser drive gear Z25.
  6 Damaged gears in the process drive system Replace the process drive unit.
  7 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  8 Eject sensor failure Replace the eject sensor PCB ASSY.
  9 Fuser unit failure Replace the fuser unit.
  10 Main PCB failure Replace the main PCB ASSY.

• Code: 7100
• Description: After the registration rear sensor detects the end of paper pass and the specified period of time has passed, the eject sensor continues to detect paper pass.
• Remedy: <User Check>
  • Remove the jammed paper.
  • Check if the back cover is open during duplex printing.
  1 Foreign object in the rear of the machine Remove the foreign object.
  2 Eject actuator caught in some sections of the machine Reattach the eject actuator.
  3 Fuser cover attachment failure Reattach the fuser cover.
  4 Back cover attachment failure Reattach the back cover.
  5 Eject sensor failure Replace the eject sensor PCB ASSY.
  6 Back cover failure Replace the back cover.
  7 Damaged fuser drive gear Z25 Replace the fuser drive gear Z25.
  8 Paper eject ASSY failure Replace the paper eject ASSY.
  9 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  10 Fuser unit failure Replace the fuser unit.
  11 Main PCB failure Replace the main PCB ASSY.

• Code: 7200
• Description: When the paper is fed from the MP tray, after the MP registration front sensor detects paper pass, the registration rear sensor does not detect paper pass after a set period of time.
• Remedy: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the MP tray paper guide.
  • Check if the papers loaded in the MP tray is not held down with your hand.
  • Check if the double feed occurs in the MP tray.
  • Close the front cover correctly.
  • Check if the machine is used with the MP tray support and MP flap are in closed state.
  1 Foreign object in the rear of the machine Remove the foreign object.
  2 Registration rear actuator coming off or caught in some sections of the machine Reattach the registration rear actuator.
  3 Connection failure of the registration front/rear sensor PCB harness Reconnect the registration front/rear sensor PCB harness.
  4 MP unit attachment failure Reattach the MP unit.
  5 MP separation pad worn out Replace the PF kit MP.
  6 Registration rear sensor failure Replace the registration front/rear sensor PCB.
  7 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  8 Main PCB failure Replace the main PCB ASSY.

• Code: 7301
• Description: When printing from the T1, the T1 paper feed sensor does not detect paper pass within the specified time while the T1 paper empty sensor detects some paper set.
• Remedy: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the T1 paper guide.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 T1 paper pick up roller holder attachment failure Reattach the T1 paper pick up roller holder.
  3 T1 paper feed actuator attachment failure Reattach the T1 paper feed actuator.
  4 Connection failure of the T1 pickup clutch harness Reconnect the T1 pickup clutch harness.
  5 Connection failure of the T1 paper empty/paper feed sensor PCB Reconnect the T1 paper empty/paper feed sensor PCB.
  6 PF kit 1 failure Replace the PF kit 1.
  7 T1 paper empty/paper feed sensor PCB failure Replace the T1 paper empty/paper feed sensor PCB.
  8 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  9 Main PCB failure Replace the main PCB ASSY.

• Code: 7302
• Description: When printing from the T1, the registration front sensor does not detect paper pass within the specified time after the T1 paper feed sensor detected paper pass.
• Remedy: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the T1 paper guide.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 Registration front actuator attachment failure Reattach the registration front actuator.
  3 Connection failure of the registration front/rear sensor harness Reconnect the registration front/rear sensor harness.
  4 Registration front/rear sensor PCB failure Replace the registration front/rear sensor PCB ASSY.
  5 Damaged gears in the paper feeding system Replace the paper feed drive unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 7401
• Description: When printing from the T2, the T2(LT or TT) paper feed sensor does not detect paper pass within the specified time while the T2(LT or TT) paper empty sensor detects some paper set.
• Remedy: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the T2 paper guide.
  • Install the latest main firmware.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 T2(LT or TT) paper feed actuator attachment failure Reattach the T2(LT or TT) paper feed actuator.
  3 T2(LT or TT) paper pick up roller holder attachment failure Reattach the T2(LT or TT) paper pick up roller holder.
  4 Connection failure of the T2TT paper feed sensor harness Reconnect the T2TT paper feed sensor harness.
  5 Connection failure of the LT paper feed sensor harness (Models with 500-sheet only) Reconnect the LT paper feed sensor harness.
  6 Connection failure of the LT paper empty/paper feed sensor harness (Models with 250-sheet only) Reconnect the LT paper empty/paper feed sensor harness.
  7 Connection failure of the TT control PCB harness Reconnect the TT control PCB harness.
  8 Connection failure of the T2LT control PCB harness Reconnect the T2LT control PCB harness.
  9 Connection failure of the T2(LT or TT) pickup clutch harness Reconnect the T2(LT or TT) pickup clutch harness.
  10 Connection failure of LT drive transmit sensor harness (Models with 250-sheet only) Reconnect the LT drive transmit sensor harness.
  11 Connection failure of the LT drive transmit clutch harness (Models with 250-sheet only) Reconnect the LT drive transmit clutch harness.
  12 T2TT paper feed sensor failure Replace the T2TT paper feed sensor PCB.
  13 LT paper feed sensor failure (Models with 500-sheet only) Replace the LT paper feed sensor PCB.
  14 LT paper feed sensor failure (Models with 250-sheet only) Replace the LT paper empty/paper feed sensor PCB.
  15 LT drive transmit sensor PCB failure (Models with 250-sheet only) Replace the LT drive transmit sensor PCB.
  16 Damaged gears in the paper feed drive unit (LT only) Replace the paper feed drive unit.
  17 Damaged gears in the LT paper feeding system Replace the LT.
  18 Damaged gears in the TT paper feeding system Replace the TT.
  19 Main PCB failure Replace the main PCB ASSY.

• Code: 7402
• Description: When printing from T2, the registration front sensor does not detect paper pass within the specified time after the T2(LT or TT) paper feed sensor detected paper pass.
• Remedy: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the T2 paper guide.
  • Install the latest main firmware.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 Registration front actuator attachment failure Reattach the registration front actuator.
  3 T2TT jam sensor attachment failure Reattach the T2TT jam sensor.
  4 Connection failure of the registration front/rear sensor harness Reconnect the registration front/rear sensor harness.
  5 Connection failure of the T2TT jam sensor harness Reconnect the T2TT jam sensor harness.
  6 Connection failure of the TT control PCB harness Reconnect the TT control PCB harness.
  7 Connection failure of the T2LT control PCB harness Reconnect the T2LT control PCB harness.
  8 Registration front/rear sensor PCB failure Replace the registration front/rear sensor PCB ASSY.
  9 T2TT jam sensor PCB failure Replace the T2TT jam sensor PCB ASSY.
  10 TT control PCB failure Replace the TT control PCB ASSY.
  11 T2LT control PCB failure Replace the T2LT control PCB ASSY.
  12 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  13 TT drive transmit clutch failure Replace the TT joint unit.
  14 Damaged gears in the LT paper feeding system Replace the LT.
  15 Damaged gears in the TT paper feeding system Replace the TT.
  16 Main PCB failure Replace the main PCB ASSY.

• Code: 7501
• Description: When printing from the T3, the T3(LT or TT) paper feed sensor does not detect paper pass within the specified time while the T3(LT or TT) paper empty sensor detects some paper set.
• Remedy: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the T3 paper guide.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 T3(LT or TT) paper feed actuator attachment failure Reattach the T3(LT or TT) paper feed actuator.
  3 T3(LT or TT) paper pick up roller holder attachment failure Reattach the T3(LT or TT) paper pick up roller holder.
  4 Connection failure of the T3TT paper feed sensor harness Reconnect the T3TT paper feed sensor harness.
  5 Connection failure of the LT paper feed sensor harness (Models with 500-sheet only) Reconnect the LT paper feed sensor harness.
  6 Connection failure of the LT paper empty/paper feed sensor harness (Models with 250-sheet only) Reconnect the LT paper empty/paper feed sensor harness.
  7 Connection failure of the TT control PCB harness Reconnect the TT control PCB harness.
  8 Connection failure of the T3LT control PCB harness Reconnect the T3LT control PCB harness.
  9 Connection failure of the T3(LT or TT) pickup clutch harness Reconnect the T3(LT or TT) pickup clutch harness.
  10 Connection failure of LT drive transmit sensor harness (Models with 250-sheet only) Reconnect the LT drive transmit sensor harness.
  11 Connection failure of the LT drive transmit clutch harness (Models with 250-sheet only) Reconnect the LT drive transmit clutch harness.
  12 T3TT paper feed sensor failure Replace the T3TT paper feed sensor PCB.
  13 LT paper feed sensor failure (Models with 500-sheet only) Replace the LT paper feed sensor PCB.
  14 LT paper feed sensor failure (Models with 250-sheet only) Replace the LT paper empty/paper feed sensor PCB.
  15 LT drive transmit sensor PCB failure (Models with 250-sheet only) Replace the LT drive transmit sensor PCB.
  16 Damaged gears in the paper feed drive unit (LT only) Replace the paper feed drive unit.
  17 Damaged gears in the LT paper feeding system Replace the LT.
  18 Damaged gears in the TT paper feeding system Replace the TT.
  19 Main PCB failure Replace the main PCB ASSY.

• Code: 7502
• Description: When printing from T3, the registration front sensor does not detect paper pass within the specified time after the T3(LT or TT) paper feed sensor detected paper pass.
• Remedy: <User Check> • Remove the jammed paper. • Add the paper properly using the T3 paper guide. • Install the latest main firmware.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 Registration front actuator attachment failure Reattach the registration front actuator.
  3 T2/T3TT jam sensor attachment failure Reattach the T2/T3TT jam sensor.
  4 Connection failure of the registration front/rear sensor harness Reconnect the registration front/rear sensor harness.
  5 Connection failure of the T2/ T3TT jam sensor harness Reconnect the T2/T3TT jam sensor harness.
  6 Connection failure of the TT control PCB harness Reconnect the TT control PCB harness.
  7 Connection failure of the T2/ T3LT control PCB harness Reconnect the T2/T3LT control PCB harness.
  8 Connection failure of the T3TT release clutch harness Reconnect the T3TT release clutch harness.
  9 T3TT release clutch failure Replace the T3TT release clutch.
  10 Registration front/rear sensor PCB failure Replace the registration front/rear sensor PCB ASSY.
  11 T2/T3TT jam sensor PCB failure Replace the T2/T3TT jam sensor PCB ASSY.
  12 TT control PCB failure Replace the TT control PCB ASSY.
  13 T2/T3LT control PCB failure Replace the T2/T3LT control PCB ASSY.
  14 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  15 TT drive transmit clutch failure Replace the TT joint unit.
  16 Damaged gears in an LT paper feeding system Replace the LT.
  17 Damaged gears in the TT paper feeding system Replace the TT.
  18 Main PCB failure Replace the main PCB ASSY.

• Code: 7601
• Description: When printing from the T4, the T4(LT or TT) paper feed sensor does not detect paper pass within the specified time while the T4(LT or TT) paper empty sensor detects some paper set.
• Remedy: <User Check> • Remove the jammed paper. • Add the paper properly using the T4 paper guide.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 T4(LT or TT) paper feed actuator attachment failure Reattach the T4(LT or TT) paper feed actuator.
  3 T4(LT or TT) paper pick up roller holder attachment failure Reattach the T4(LT or TT) paper pick up roller holder.
  4 Connection failure of the T4TT paper feed sensor harness Reconnect the T4TT paper feed sensor harness.
  5 Connection failure of the LT paper empty/paper feed sensor harness (Models with 250-sheet only) Reconnect the LT paper empty/paper feed sensor harness.
  6 Connection failure of the TT control PCB harness Reconnect the TT control PCB harness.
  7 Connection failure of the T4LT control PCB harness Reconnect the T4LT control PCB harness.
  8 Connection failure of the T4(LT or TT) pickup clutch harness Reconnect the T4(LT or TT) pickup clutch harness.
  9 Connection failure of LT drive transmit sensor harness (Models with 250-sheet only) Reconnect the LT drive transmit sensor harness.
  10 Connection failure of the LT drive transmit clutch harness (Models with 250-sheet only) Reconnect the LT drive transmit clutch harness.
  11 T4TT paper feed sensor failure Replace the T4TT paper feed sensor PCB.
  12 LT paper feed sensor failure (Models with 250-sheet only) Replace the LT paper empty/paper feed sensor PCB.
  13 LT drive transmit sensor PCB failure (Models with 250-sheet only) Replace the LT drive transmit sensor PCB.
  14 Damaged gears in the paper feed drive unit (Models with 250-sheet only) Replace the paper feed drive unit.
  15 Damaged gears in the LT paper feeding system Replace the LT.
  16 Damaged gears in the TT paper feeding system Replace the TT.
  17 Main PCB failure Replace the main PCB ASSY.

• Code: 7602
• Description: When printing from T4, the registration front sensor does not detect paper pass within the specified time after the T4(LT or TT) paper feed sensor detected paper pass.
• Remedy: <User Check> • Remove the jammed paper. • Add the paper properly using the T4 paper guide. • Install the latest main firmware.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 Registration front actuator attachment failure Reattach the registration front actuator.
  3 T2/T3/T4TT jam sensor attachment failure Reattach the T2/T3/T4TT jam sensor.
  4 Connection failure of the registration front/rear sensor harness Reconnect the registration front/rear sensor harness.
  5 Connection failure of the T2/T3/ T4TT jam sensor harness Reconnect the T2/T3/T4TT jam sensor harness.
  6 Connection failure of the TT control PCB harness Reconnect the TT control PCB harness.
  7 Connection failure of the T2/T3/ T4LT control PCB harness Reconnect the T2/T3/T4LT control PCB harness.
  8 Connection failure of the T3/ T4TT release clutch harness Reconnect the T3/T4TT release clutch harness.
  9 T3/T4TT release clutch failure Replace the T3/T4TT release clutch.
  10 Registration front/rear sensor PCB failure Replace the registration front/rear sensor PCB ASSY.
  11 T2/T3/T4TT jam sensor PCB failure Replace the T2/T3/T4TT jam sensor PCB ASSY.
  12 TT control PCB failure Replace the TT control PCB ASSY.
  13 T2/T3/T4LT control PCB failure Replace the T2/T3/T4LT control PCB ASSY.
  14 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  15 TT drive transmit clutch failure Replace the TT joint unit.
  16 Damaged gears in an LT paper feeding system Replace the LT.
  17 Damaged gears in the TT paper feeding system Replace the TT.
  18 Main PCB failure Replace the main PCB ASSY.

• Code: 7701
• Description: When printing from the T5, the T5TT paper feed sensor does not detect paper pass within the specified time while the T5TT paper empty sensor detects some paper set.
• Remedy: <User Check> • Remove the jammed paper. • Add the paper properly using the T5 paper guide.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 Malfunction of the TT control PCB Install the latest main firmware.
  3 T5TT paper pick up roller holder attachment failure Reattach the T5TT paper pick up roller holder.
  4 T5TT paper feed actuator attachment failure Reattach the T5TT paper feed actuator.
  5 Connection failure of the T5TT pickup clutch harness Reconnect the T5TT pickup clutch harness.
  6 Connection failure of the T5TT paper feed sensor harness Reconnect the T5TT paper feed sensor harness.
  7 PF kit 5 failure Replace the PF kit 5.
  8 T5TT pickup clutch failure Replace the T5TT pickup clutch.
  9 T5TT paper feed sensor PCB failure Replace the T5TT paper feed sensor PCB ASSY.
  10 T5TT paper empty sensor PCB failure Replace the T5TT paper empty sensor PCB ASSY.
  11 TT control PCB failure Replace the TT control PCB ASSY.
  12 TT drive transmit clutch failure Replace the TT joint unit.
  13 Main PCB failure Replace the main PCB ASSY.

• Code: 7702
• Description: When printing from T5, the registration front sensor does not detect paper pass within the specified time after the T5TT paper feed sensor detected paper pass.
• Remedy: <User Check> • Remove the jammed paper. • Add the paper properly using the T5 paper guide. • Install the latest main firmware.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 Registration front actuator attachment failure Reattach the registration front actuator.
  3 T2/T3/T4/T5TT jam sensor attachment failure Reattach the T2/T3/T4/T5TT jam sensor.
  4 Connection failure of the registration front/rear sensor harness Reconnect the registration front/rear sensor harness.
  5 Connection failure of the T2/T3/ T4/T5TT jam sensor harness Reconnect the T2/T3/T4/T5TT jam sensor harness.
  6 Connection failure of the TT control PCB harness Reconnect the TT control PCB harness.
  7 Connection failure of the T3/T4/ T5TT release clutch harness Reconnect the T3/T4/T5TT release clutch harness.
  8 T3/T4/T5TT release clutch failure Replace the T3/T4/T5TT release clutch.
  9 Registration front/rear sensor PCB failure Replace the registration front/rear sensor PCB ASSY.
  10 T2/T3/T4/T5TT jam sensor PCB failure Replace the T2/T3/T4/T5TT jam sensor PCB ASSY.
  11 TT control PCB failure Replace the TT control PCB ASSY.
  12 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  13 TT drive transmit clutch failure Replace the TT joint unit.
  14 Damaged gears in the TT paper feeding system Replace the TT.
  15 Main PCB failure Replace the main PCB ASSY.

• Code: 7800
• Description: After the first side is printed in 2-sided printing mode, the registration front sensor does not detect paper pass after a set period of time.
• Remedy: <User Check> • Remove the jammed paper. • Close the back cover correctly.
  1 Foreign object in the rear of the machine or duplex tray Remove the foreign object.
  2 Back flapper holder attachment failure Reattach the back flapper holder.
  3 Twisted TT frame Loosen the nine screws shown in the figure below and tighten them again.
  4 Connection failure of the switch back solenoid harness Reconnect the switch back solenoid harness.
  5 Paper eject roller failure Replace the paper eject ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 8501
• Description: The T1 paper feed sensor detected that the T1 is open when printing from T1, 2, 3, 4 or 5 (before the registration of printing in the engine).
• Remedy: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 An LT/TT paper feed actuator coming off or caught in some sections of the machine Reattach the appropriate LT/TT paper feed actuator.
  3 An LT/TT paper feed sensor failure Replace the appropriate LT/TT paper feed sensor PCB ASSY.
  4 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  5 TT relay PCB failure Replace a TT relay PCB ASSY.
  6 TT control PCB failure Replace the TT control PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 8502
• Description: The T2(LT or TT) paper feed sensor detected that the T2 is open when printing from T2, 3, 4 or 5 (before the registration of printing in the engine).
• Remedy: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 An LT/TT paper feed actuator coming off or caught in some sections of the machine Reattach the appropriate LT/TT paper feed actuator.
  3 An LT/TT paper feed sensor failure Replace the appropriate LT/TT paper feed sensor PCB ASSY.
  4 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  5 TT relay PCB failure Replace a TT relay PCB ASSY.
  6 TT control PCB failure Replace the TT control PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 8503
• Description: The T3(LT or TT) paper feed sensor detected that the T3 is open when printing from T3, 4 or 5 (before the registration of printing in the engine).
• Remedy: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 An LT/TT paper feed actuator coming off or caught in some sections of the machine Reattach the appropriate LT/TT paper feed actuator.
  3 An LT/TT paper feed sensor failure Replace the appropriate LT/TT paper feed sensor PCB ASSY.
  4 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  5 TT relay PCB failure Replace a TT relay PCB ASSY.
  6 TT control PCB failure Replace the TT control PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 8504
• Description: The T4(LT or TT) paper feed sensor detected that the T4 is open when printing from T4 or 5 (before the registration of printing in the engine).
• Remedy: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 An LT/TT paper feed actuator coming off or caught in some sections of the machine Reattach the appropriate LT/TT paper feed actuator.
  3 An LT/TT paper feed sensor failure Replace the appropriate LT/TT paper feed sensor PCB ASSY.
  4 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  5 TT relay PCB failure Replace a TT relay PCB ASSY.
  6 TT control PCB failure Replace the TT control PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 8505
• Description: The T1 paper feed sensor detected that the T1 is open when printing from T1, 2, 3, 4 or 5 (after the registration of printing in the engine).
• Remedy: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 An LT/TT paper feed sensor failure Replace the appropriate LT/TT paper feed sensor PCB ASSY.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 TT relay PCB failure Replace a TT relay PCB ASSY.
  5 TT control PCB failure Replace the TT control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

– Get more error code list with quick guide to fix printer product, click here
– About get help with reseting Epson inkpad or others, click here

• Code: 8506
• Description: The T2(LT or TT) paper feed sensor detected that the T2 is open when printing from T2, 3, 4 or 5 (after the registration of printing in the engine).
• Remedy: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 An LT/TT paper feed sensor failure Replace the appropriate LT/TT paper feed sensor PCB ASSY.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 TT relay PCB failure Replace a TT relay PCB ASSY.
  5 TT control PCB failure Replace the TT control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 8507
• Description: The T3(LT or TT) paper feed sensor detected that the T3 is open when printing from T3, 4 or 5 (after the registration of printing in the engine).
• Remedy: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 An LT/TT paper feed sensor failure Replace the appropriate LT/TT paper feed sensor PCB ASSY.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 TT relay PCB failure Replace a TT relay PCB ASSY.
  5 TT control PCB failure Replace the TT control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 8508
• Description: The T4(LT or TT) paper feed sensor detected that the T4 is open when printing from T4 or 5 (after the registration of printing in the engine).
• Remedy: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 An LT/TT paper feed sensor failure Replace the appropriate LT/TT paper feed sensor PCB ASSY.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 TT relay PCB failure Replace a TT relay PCB ASSY.
  5 TT control PCB failure Replace the TT control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 8903
• Description: The back cover sensor detected the open state when 2-sided printing is started (before the registration of printing in the engine).
• Remedy: <User Check> • Close the back cover correctly.
  1 Connection failure of the back cover sensor harness Reconnect the back cover sensor harness.
  2 Back cover sensor attachment failure Reattach the back cover sensor.
  3 Breakage of boss that presses the back cover sensor Replace the back cover.
  4 Back cover sensor failure Replace the back cover sensor.
  5 Main PCB failure Replace the main PCB ASSY

• Code: 8904
• Description: The back cover sensor detected the open state during 2-sided printing (after the registration of printing in the engine).
• Remedy: <User Check> • Close the back cover correctly.
  1 Connection failure of the back cover sensor harness Reconnect the back cover sensor harness.
  2 Back cover sensor attachment failure Reattach the back cover sensor.
  3 Breakage of boss that presses the back cover sensor Replace the back cover.
  4 Back cover sensor failure Replace the back cover sensor.
  5 Main PCB failure Replace the main PCB ASSY

• Code: 8A01
• Description: The registration rear sensor detected that the paper fed was smaller or larger than the specified size in duplex printing mode.
• Remedy: <User Check> • Use specified paper.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 8A02
• Description: The registration rear sensor detected that the length of the paper is too long and it may hit within the machine in 2-sided printing.
• Remedy: <User Check> • Use specified paper.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 8B01
• Description: Detected that the TT was not turned ON.
• Remedy: <User Check> • Turn ON the TT. • Reconnect the AC cord of the TT.
  1 Malfunction of the TT control PCB Install the latest main firmware.
  2 Connection failure of the TT lowvoltage power supply PCB harness Reconnect the TT low-voltage power supply PCB harness.
  3 TT AC cord breakage Replace the AC cord.
  4 LT/TT connector failure (machine or LT/TT joint unit side) Replace the LT/TT connector on the machine side or LT/TT joint unit side.
  5 TT low-voltage power supply PCB failure Replace the TT low-voltage power supply PCB ASSY.
  6 TT control PCB failure Replace the TT control PCB ASSY.
  7 TT joint relay PCB failure Replace the TT joint unit.
  8 Main PCB failure Replace the main PCB ASSY.

• Code: 8D01
• Description: The registration rear sensor detected that the paper loaded in the paper tray was smaller than the specified size.
• Remedy: <User Check> • Open the back cover and print using the straight paper path. • Length of the paper is 114 mm or more.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 8E02
• Description: Detected that the size of paper set in the paper tray was over 10 mm shorter than letter size during receiving fax data or printing a list or report.
• Remedy: <User Check> • Set A4 or Letter-size paper.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 9001
• Description: The size of paper loaded in the MP tray and the one specified from the driver are not same when paper is fed from the MP tray.
• Remedy: <User Check> • Change the driver setting to be matched with the size of the paper set in the paper tray.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 9002
• Description: The size of paper loaded in the T1 and the one specified from the driver are not same when paper is fed from the T1.
• Remedy: <User Check> • Change the driver setting to be matched with the size of the paper set in the paper tray.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 9003
• Description: The size of paper loaded in the T2 and the one specified from the driver are not same when paper is fed from the T2.
• Remedy: <User Check> • Change the driver setting to be matched with the size of the paper set in the paper tray.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 9004
• Description: The size of paper loaded in the T3 and the one specified from the driver are not same when paper is fed from the T3.
• Remedy: <User Check> • Change the driver setting to be matched with the size of the paper set in the paper tray.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 9005
• Description: The size of paper loaded in the T4 and the one specified from the driver are not same when paper is fed from the T4.
• Remedy: <User Check> • Change the driver setting to be matched with the size of the paper set in the paper tray.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 9006
• Description: The size of paper loaded in the T5 and the one specified from the driver are not same when paper is fed from the T5.
• Remedy: <User Check> • Change the driver setting to be matched with the size of the paper set in the paper tray.
  1 Registration rear actuator caught in some sections of the machine Reattach the registration rear actuator.
  2 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 9201
• Description: When printing from the MP tray, paper type setting in the machine does not match the setting in the driver.
• Remedy: <User Check> • Use the same paper type setting for the machine and driver.
  1 Malfunction of the main PCB Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 9202
• Description: When printing from the T1, paper type setting in the machine does not match the setting in the driver.
• Remedy: <User Check> • Use the same paper type setting for the machine and driver.
  1 Malfunction of the main PCB Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 9203
• Description: When printing from the T2, paper type setting in the machine does not match the setting in the driver.
• Remedy: <User Check> • Use the same paper type setting for the machine and driver.
  1 Malfunction of the main PCB Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 9204
• Description: When printing from the T3, paper type setting in the machine does not match the setting in the driver.
• Remedy: <User Check> • Use the same paper type setting for the machine and driver.
  1 Malfunction of the main PCB Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 9205
• Description: When printing from the T4, paper type setting in the machine does not match the setting in the driver.
• Remedy: <User Check> • Use the same paper type setting for the machine and driver.
  1 Malfunction of the main PCB Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 9206
• Description: When printing from the T5, paper type setting in the machine does not match the setting in the driver.
• Remedy: <User Check> • Use the same paper type setting for the machine and driver.
  1 Malfunction of the main PCB Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 9301
• Description: When paper was fed from the MP tray, the MP paper empty sensor detected that no paper was in the MP tray.
• Remedy: <User Check> • Load paper to the MP tray.
  1 MP paper empty actuator caught in some sections of the machine Reattach the MP paper empty actuator.
  2 Connection failure of the MP paper empty/registration front sensor PCB harness Reconnect the MP paper empty/ registration front sensor PCB harness.
  3 MP paper empty sensor failure Replace the MP paper empty/registration front sensor PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 9302
• Description: When paper was fed from the T1, the T1 paper empty sensor or T1 paper feed sensor detected that no paper was in the T1.
• Remedy: <User Check> • Set paper in the appropriate paper tray.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 Connection failure of an LT paper empty/ plate origin sensor harness (Models with 500-sheet only) Reconnect the appropriate LT paper empty/plate origin sensor harness.
  3 Connection failure of an LT paper empty/ paper feed sensor harness (Models with 250-sheet only) Reconnect the appropriate LT paper empty/paper feed sensor harness.
  4 Connection failure of an TT paper empty sensor harness Reconnect the appropriate TT paper empty sensor harness.
  5 Connection failure of the T1 paper empty/ paper feed sensor PCB (non NFC models only) Reconnect the T1 paper empty/paper feed sensor PCB.
  6 Connection failure of the T1 paper empty/ paper feed sensor harness (NFC models only) Reconnect the T1 paper empty/paper feed sensor harness.
  7 Connection failure of the T1 solenoid harness (non NFC models only) Reconnect the T1 solenoid harness. 8 An LT/TT paper empty actuator caught in some sections of the machine Reattach the appropriate LT/TT paper empty actuator.
  9 T1 paper feed actuator caught in some sections of the machine (non NFC models only) Reattach the T1 paper feed actuator.
  10 T1 paper empty actuator caught in some sections of the machine (NFC models only) Reattach the T1 paper empty actuator. 11 Abrasion of the PF kit 1 (non NFC models only) Replace the PF kit 1.
  12 A T1/LT/TT paper empty sensor PCB failure Replace the appropriate T1 paper empty/paper feed sensor, LT paper empty/plate origin sensor (Models with 500-sheet only), LT paper empty/paper feed sensor (Models with 250-sheet only) or TT paper empty sensor PCB ASSY.
  13 T1 paper feed sensor PCB failure (non NFC models only) Replace the T1 paper feed sensor PCB ASSY.
  14 T1 solenoid failure (non NFC models only) Replace the T1 solenoid.
  15 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  16 TT relay PCB failure Replace a TT relay PCB ASSY.
  17 TT control PCB failure Replace the TT control PCB ASSY.
  18 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  19 Paper feed motor failure Replace the process drive unit.
  20 Main PCB failure Replace the main PCB ASSY.

• Code: 9309
• Description: Detected that there was no paper set in all trays when TrayAuto was selected for printing.
• Remedy: <User Check> • Set paper in the paper tray.
  1 Malfunction of an LT control PCB or TT control PCB Install the latest main firmware.
  2 Connection failure of an LT paper empty/plate origin sensor harness (Models with 500-sheet only) Reconnect the appropriate LT paper empty/ plate origin sensor harness.
  3 Connection failure of an LT paper empty/paper feed sensor harness (Models with 250-sheet only) Reconnect the appropriate LT paper empty/ paper feed sensor harness.
  4 Connection failure of a TT paper empty sensor harness Reconnect the appropriate TT paper empty sensor harness.
  5 Connection failure of the MP paper empty/registration front sensor PCB harness Reconnect the MP paper empty/registration front sensor PCB harness.
  6 Connection failure of the T1 paper empty/paper feed sensor PCB (non NFC models only) Reconnect the T1 paper empty/paper feed sensor PCB.
  7 Connection failure of the T1 paper empty/paper feed sensor harness (NFC models only) Reconnect the T1 paper empty/paper feed sensor harness.
  8 Connection failure of the T1 solenoid harness (non NFC models only) Reconnect the T1 solenoid harness.
  9 A T1/MP/LT/TT paper empty actuator caught in some sections of the machine Reattach the appropriate T1/MP/LT/TT paper empty actuator.
  10 T1 paper feed actuator caught in some sections of the machine (non NFC models only) Reattach the T1 paper feed actuator.
  11 Abrasion of the PF kit 1 (NFC models only) Replace the PF kit 1.
  12 A T1/MP/LT/TT paper empty sensor PCB failure Replace the appropriate T1 paper empty/paper feed sensor, MP paper empty/registration front sensor, LT paper empty/plate origin sensor (Models with 500-sheet only), LT paper empty/ paper feed sensor (Models with 250-sheet only) or TT paper empty sensor PCB ASSY.
  13 T1 paper feed sensor PCB failure (non NFC models only) Replace the T1 paper feed sensor PCB ASSY.
  14 T1 solenoid failure (non NFC models only) Replace the T1 solenoid.
  15 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  16 TT relay PCB failure Replace a TT relay PCB ASSY.
  17 TT control PCB failure Replace the TT control PCB ASSY.
  18 Damaged gears in the paper feed drive unit Replace the paper feed drive unit.
  19 Paper feed motor failure Replace the process drive unit.
  20 Main PCB failure Replace the main PCB ASSY.

• Code: 930A
• Description: Paper ran out during Fax / List continuous printing.
• Remedy: <User Check> • Set paper in the appropriate paper tray.
  1 A T1/MP/LT/TT paper empty actuator caught in some sections of the machine Reattach the appropriate T1/MP/LT/TT paper empty actuator.
  2 T1 paper feed actuator caught in some sections of the machine (non NFC models Only) Reattach the T1 paper feed actuator.
  3 A T1/MP/LT/TT paper empty sensor PCB failure Replace the appropriate T1 paper empty/ paper feed sensor, MP paper empty/ registration front sensor, LT paper empty/ plate origin sensor (Models with 500-sheet only), LT paper empty/paper feed sensor (Models with 250-sheet only), TT paper empty sensor PCB ASSY.
  4 T1 paper feed sensor PCB failure (non NFC models only) Replace the T1 paper feed sensor PCB ASSY.
  5 T1 solenoid failure (non NFC models only) Replace the T1 solenoid.
  6 Damaged paper feed gears/ motor Replace the paper feed drive unit.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 9701
• Description: For 2-sided printing, paper size setting of the printer driver that was not supported by 2-sided printing was selected.
• Remedy: <User Check> • Select the specified paper size in the driver and set paper with the same size to the specified paper tray.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9702
• Description: For printing by feeding paper from the T1, the size of paper specified from the driver set the size which was not supported by the T1.
• Remedy: <User Check> • Select the specified paper size in the driver and set paper with the same size to the specified paper tray.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9703
• Description: For printing by feeding paper from the T2, the size of paper specified from the driver set the size which was not supported by the T2.
• Remedy: <User Check> • Select the specified paper size in the driver and set paper with the same size to the specified paper tray.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9704
• Description: For printing by feeding paper from the T3, the size of paper specified from the driver set the size which was not supported by the T3.
• Remedy: <User Check> • Select the specified paper size in the driver and set paper with the same size to the specified paper tray.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9705
• Description: For printing by feeding paper from the T4, the size of paper specified from the driver set the size which was not supported by the T4.
• Remedy: <User Check> • Select the specified paper size in the driver and set paper with the same size to the specified paper tray.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9706
• Description: For printing by feeding paper from the T5, the size of paper specified from the driver set the size which was not supported by the T5.
• Remedy: <User Check> • Select the specified paper size in the driver and set paper with the same size to the specified paper tray.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9801
• Description: An error occurred with the value measured during color density adjustment performed from the control panel.
• Remedy: <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. • Replace the drum unit. • If the belt unit has a scratch, replace it. • If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste toner box.
  1 Dirt on the registration mark sensor L Clean the registration mark sensor L.
  2 Failure in printed measurement If failure occurs when printing “2D3S YMCBWKW_A” in “Function code 71”, refer to “4.3 Troubleshooting for Image Defects” in this chapter and take a measure.
  3 Connection failure of the registration mark sensor L PCB harness Reconnect the registration mark sensor L PCB harness.
  4 Density sensor failure Replace the registration mark sensor unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 9802
• Description: Dot counter or develop roller counter of color toner has reached the upper limit during color density adjustment performed from the control panel.
• Remedy: <User Check> • Replace the corresponding toner cartridge.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9803
• Description: Density patch measurement ended unsuccessfully during color density adjustment performed from the control panel.
• Remedy: <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. • Replace the drum unit. • If the belt unit has a scratch, replace it. • If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste toner box.
  1 Dirt on the registration mark sensor L Clean the registration mark sensor L.
  2 Failure in printed measurement If failure occurs when printing “2D3S YMCBWKW_A” in “Function code 71”, refer to “4.3 Troubleshooting for Image Defects” in this chapter and take a measure.
  3 Connection failure of the registration mark sensor L PCB harness Reconnect the registration mark sensor L PCB harness.
  4 Density sensor failure Replace the registration mark sensor unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 9804
• Description: An error occurred with the value measured during density sensor sensitivity calibration.
• Remedy: <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. • Replace the drum unit. • If the belt unit has a scratch, replace it. • If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste toner box.
  1 Dirt on the registration mark sensor L Clean the registration mark sensor L.
  2 Failure in printed measurement If failure occurs when printing “2D3S YMCBWKW_A” in “Function code 71”, refer to “4.3 Troubleshooting for Image Defects” in this chapter and take a measure.
  3 Connection failure of the registration mark sensor L PCB harness Reconnect the registration mark sensor L PCB harness.
  4 Density sensor failure Replace the registration mark sensor unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 9901
• Description: An error occurred with the value measured during manual color registration performed from the control panel.
• Remedy: <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. • Replace the drum unit. • If the belt unit has a scratch, replace it. • If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste toner box.
  1 Dirt on the registration mark sensor L / registration mark sensor R Clean the registration mark sensor L / registration mark sensor R.
  2 Connection failure of the registration mark sensor L PCB / registration mark sensor R PCB harness Reconnect the registration mark sensor L PCB / registration mark sensor R PCB harness.
  3 Failure in printed measurement If failure occurs when printing “2D3S YMCBWKW_A” in “Function code 71”, refer to “4.3 Troubleshooting for Image Defects” in this chapter and take a measure.
  4 Registration mark sensor L or registration mark sensor R failure Replace the registration mark sensor unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 9902
• Description: Dot counter or develop roller counter of color toner has reached the upper limit during auto color registration performed from the control panel.
• Remedy: <User Check> • Replace the corresponding toner cartridge.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9903
• Description: An error occurred during patch data printing in manual color registration performed from the control panel.
• Remedy: <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. • Replace the drum unit. • If the belt unit has a scratch, replace it. • If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste toner box.
  1 Dirt on the registration mark sensor L / registration mark sensor R Clean the registration mark sensor L / registration mark sensor R.
  2 Connection failure of the registration mark sensor L PCB / registration mark sensor R PCB harness Reconnect the registration mark sensor L PCB / registration mark sensor R PCB harness.
  3 Failure in printed measurement If failure occurs when printing “2D3S YMCBWKW_A” in “Function code 71”, refer to “4.3 Troubleshooting for Image Defects” in this chapter and take a measure.
  4 Registration mark sensor L or registration mark sensor R failure Replace the registration mark sensor unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 9A01
• Description: An error occurred with the value measured during auto color registration performed from the control panel.
• Remedy: <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. • Replace the drum unit. • If the belt unit has a scratch, replace it. • If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste toner box.
  1 Dirt on the registration mark sensor L / registration mark sensor R Clean the registration mark sensor L / registration mark sensor R.
  2 Connection failure of the registration mark sensor L PCB / registration mark sensor R PCB harness Reconnect the registration mark sensor L PCB / registration mark sensor R PCB harness.
  3 Failure in printed measurement If failure occurs when printing “2D3S YMCBWKW_A” in “Function code 71”, refer to “4.3 Troubleshooting for Image Defects” in this chapter and take a measure.
  4 Registration mark sensor L or registration mark sensor R failure Replace the registration mark sensor unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 9A02
• Description: Dot counter or develop roller counter of color toner has reached the upper limit during auto color registration performed from the control panel.
• Remedy: <User Check>
  • Replace the corresponding toner cartridge.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9A03
• Description: An error occurred during patch data printing in auto color registration performed from the control panel.
• Remedy: <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. • Replace the drum unit. • If the belt unit has a scratch, replace it. • If “WT Box End Soon” is displayed on the LCD and the belt unit has dirt, replace the waste toner box.
  1 Dirt on the registration mark sensor L / registration mark sensor R Clean the registration mark sensor L / registration mark sensor R.
  2 Connection failure of the registration mark sensor L PCB / registration mark sensor R PCB harness Reconnect the registration mark sensor L PCB / registration mark sensor R PCB harness.
  3 Failure in printed measurement If failure occurs when printing “2D3S YMCBWKW_A” in “Function code 71”, refer to “4.3 Troubleshooting for Image Defects” in this chapter and take a measure.
  4 Registration mark sensor L or registration mark sensor R failure Replace the registration mark sensor unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: A000
• Description: Image processing was not completed correctly because the number of pixels required for image processing is insufficient in the scanned second side data.
• Remedy: 1 Incorrect correction data for second side CIS unit Execute “Set CIS scan area (Function code 55)”.
  2 Second side CIS unit failure Replace the second side CIS unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: A200
• Description: The document scanning position sensor detected that the document length was 90 cm or more during the one-side scanning.
• Remedy: <User Check>
  • Use the paper less than A4 size.
  • Remove the jammed document.
  1 Document scanning position actuator caught in some sections of the machine Reattach the document scanning position actuator.
  2 Document scanning position sensor failure Replace the ADF unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: A300
• Description: The document scanning position sensor has not detected the document passing even after the document has been fed for the specified time.
• Remedy: <User Check>
  • Adjust the document guide to suit the document size.
  • Remove the jammed document.
  1 Foreign object inside the ADF Remove the foreign objects inside the ADF.
  2 Document scanning position actuator caught in some sections of the machine Reattach the document scanning position actuator.
  3 Connection failure of the document scanning position sensor harness Reconnect the document scanning position sensor harness.
  4 Document scanning position sensor failure Replace the ADF unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: A400
• Description: The ADF cover sensor detected that the ADF cover was open.
• Remedy: <User Check> • Close the ADF cover correctly.
  1 ADF cover actuator caught in some sections of the machine Reattach the ADF cover actuator.
  2 ADF cove sensor attachment failure Reattach the ADF cover sensor.
  3 ADF cover attachment failure Reattach the ADF cover.
  4 Connection failure of the ADF cover sensor harness. Reconnect he ADF cover sensor harness.
  5 Damage of the ADF cover Replace the ADF cover.
  6 ADF cover sensor failure Replace the ADF cover sensor.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: A600
• Description: When scanning the fax, white or black correction data for the first side CIS unit was not within the correct range (second time).
• Remedy: 1 Incorrect correction data for first side CIS unit Execute “Acquire white level data (Function code 55)”.
  2 Dirt on the white tape on the second side document hold Clean the white tape on the second side document hold.
  3 Damaged first side CIS flat cable Replace the first side CIS flat cable.
  4 First side CIS unit failure Replace the first side CIS unit.
  5 White tape failure Replace the document scanner unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: A700
• Description: Color parameter in the ROM does not match the first side or second side CIS.
• Remedy: 1 Incorrect correction data for first side or second side CIS unit Execute “Set CIS scan area (Function code 55)”.
  2 Damaged first side CIS flat cable Replace the first side CIS flat cable.
  3 Damaged second side CIS flat cable Replace the second side CIS flat cable.
  4 First side CIS unit failure Replace the first side CIS unit.
  5 Second side CIS unit failure Replace the second side CIS unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: A900
• Description: A scanning error occurred while processing the scanned image.
• Remedy: 1 Incorrect correction data for first side or second side CIS unit Execute “Set CIS scan area (Function code 55)”.
  2 Damaged first side CIS flat cable Replace the first side CIS flat cable.
  3 Damaged second side CIS flat cable Replace the second side CIS flat cable.
  4 First side CIS unit failure Replace the first side CIS unit.
  5 Second side CIS unit failure Replace the second side CIS unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: AC00
• Description: When scanning the fax, white or black correction data for the second side CIS was not within the correct range (first time).
• Remedy: 1 Incorrect correction data for second side CIS unit Execute “Acquire white level data (Function code 55)”.
  2 Dirt on the white tape on the second side document hold Clean the white tape on the second side document hold.
  3 Damaged second side CIS flat cable Replace the second side CIS flat cable.
  4 Second side CIS unit failure Replace the second side CIS unit.
  5 White tape failure Replace the ADF unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: AD00
• Description: Image processing cannot be completed correctly because the number of pixels required for image processing is insufficient in the scanned first side data.
• Remedy: 1 Incorrect correction data for first side CIS unit Execute “Set CIS scan area (Function code 55)”.
  2 Connection failure of the first side CIS flat cable Reconnect the first side CIS flat cable.
  3 First side CIS unit failure Replace the first side CIS unit.
  4 White tape failure Replace the document scanner unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: AE00
• Description: Unit home position could not be detected after the power switch was turned ON.
• Remedy: 1 Incorrect correction data for first side CIS unit Execute “Acquire white level data (Function code 55)”.
  2 First side CIS unit drive belt coming off Reattach the first side CIS unit drive belt.
  3 Connection failure of the first side CIS flat cable Reconnect the first side CIS flat cable.
  4 First side CIS unit failure Replace the first side CIS unit.
  5 FB motor failure Replace the document scanner unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: AF00
• Description: Home position is still being detected even after the first side CIS unit was moved.
• Remedy: 1 Dust on the CIS guide shaft Remove the dust on the CIS guide shaft.
  2 CIS drive belt coming off Reattach the CIS drive belt.
  3 Wrong wiring of the first side CIS flat cable Reattach the first side CIS flat cable.
  4 Connection failure of the FB motor harness Reconnect the FB motor harness.
  5 Damaged first side CIS flat cable Replace the first side CIS flat cable.
  6 First side CIS unit failure Replace the first side CIS unit.
  7 FB motor failure Replace the document scanner unit.
  8 Main PCB failure Replace the main PCB ASSY.

• Code: B000
• Description: Detected that the first side CIS flat cable or second side CIS flat cable was not inserted correctly when function code 55 was executed.
• Remedy: 1 Connection failure of the first side CIS flat cable Reconnect the first side CIS flat cable.
  2 Connection failure of the second side CIS flat cable Reconnect the second side CIS flat cable.
  3 Damaged first side CIS flat cable Replace the first side CIS flat cable.
  4 Damaged second side CIS flat cable Replace the second side CIS flat cable. 5 First side CIS unit failure Replace the first side CIS unit.
  6 Second side CIS unit failure Replace the second side CIS unit.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: BB00
• Description: A white level not within the standard was scanned when function code 55 was executed.
• Remedy: 1 Dirt on the second side document hold Clean the second side document hold.
  2 Dirt on the white tape Clean the white tape.
  3 First side CIS unit failure Replace the first side CIS unit.
  4 Second side CIS unit failure Replace the second side CIS unit.
  5 Second side document hold failure Replace the ADF unit.
  6 White tape failure Replace the document scanner unit.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: BC00
• Description: When scanning the fax, white or black correction data for the second side CIS was not within the correct range (second time).
• Remedy: 1 Incorrect correction data for second side CIS unit Execute “Acquire white level data (Function code 55)”.
  2 Dirt on the white tape on the second side document hold Clean the white tape on the second side document hold.
  3 Damaged second side CIS flat cable Replace the second side CIS flat cable.
  4 Second side CIS unit failure Replace the second side CIS unit.
  5 White tape failure Replace the ADF unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: BD00
• Description: A black level not within the standard was scanned when function code 55 was executed.
• Remedy: 1 Dirt on the second side document hold Clean the second side document hold.
  2 Dirt on the white tape Clean the white tape.
  3 First side CIS unit failure Replace the first side CIS unit.
  4 Second side CIS unit failure Replace the second side CIS unit.
  5 Second side document hold failure Replace the ADF unit.
  6 White tape failure Replace the document scanner unit.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: BF00
• Description: The document scanning position sensor detected that the document length was 400 mm or longer and could not be fed to ADF (double-side restoration).
• Remedy: <User Check> • Set the specified size paper.
  1 Document scanning position actuator caught in some sections of the machine Reattach the document scanning position actuator.
  2 Document scanning position sensor failure Replace the document scanning position sensor.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C001
• Description: Timeout occurred with access request sent to server due to incorrect server address, network disconnection, or inactive server.
• Remedy: <User Check>
  • Refer to the online User’s Guide to set the network again.
  • Check the LAN cable routing.
  • Check the wireless LAN settings.
  1 Connection failure of the wireless LAN PCB connector Reconnect the wireless LAN PCB connector.
  2 Wireless LAN PCB failure Replace the wireless LAN PCB.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C002
• Description: User authentication is unavailable due to incorrect user name, incorrect password, or asynchronous date and time between the machine and server.
• Remedy: <User Check>
  • Refer to the online User’s Guide to set the network again.
  • Check the LAN cable routing.
  • Check the wireless LAN settings.
  1 Connection failure of the wireless LAN PCB connector Reconnect the wireless LAN PCB connector.
  2 Wireless LAN PCB failure Replace the wireless LAN PCB.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C003
• Description: Cannot access to the file because the directory name is wrong, writing into directory is not permitted, or writing into file is locked or not permitted.
• Remedy: <User Check>
  • Refer to the online User’s Guide to set the network again.
  • Check the LAN cable routing.
  • Check the wireless LAN settings.
  1 Connection failure of the wireless LAN PCB connector Reconnect the wireless LAN PCB connector.
  2 Wireless LAN PCB failure Replace the wireless LAN PCB.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C004
• Description: Cannot acquire current time which is required for user authentication because the time has not been acquired.
• Remedy: <User Check>
  • Refer to the online User’s Guide to set the network again.
  • Check the LAN cable routing.
  • Check the wireless LAN settings.
  1 Connection failure of the wireless LAN PCB connector Reconnect the wireless LAN PCB connector.
  2 Wireless LAN PCB failure Replace the wireless LAN PCB.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C700
• Description: The memory is insufficient to expand the data of PC-Print.
• Remedy: <User Check>
  • Print the print data stored in the memory.
  • Divide the print data and print them separately.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: C800
• Description: The memory used to store secure print data exceeded the memory size for secure print data.
• Remedy: <User Check>
  • Print the print data stored in the memory.
  • Divide the print data and print them separately.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: D100
• Description: An error occurred while initializing the modem.
• Remedy: 1 Connection failure of the modem flat cable Reconnect the modem flat cable.
  2 Modem flat cable failure Replace the modem flat cable.
  3 Modem PCB failure Replace the modem PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: D200
• Description: Detected that the modem PCB is not connected.
• Remedy: 1 Connection failure of the modem flat cable Reconnect the modem flat cable.
  2 Modem flat cable failure Replace the modem flat cable.
  3 Modem PCB failure Replace the modem PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: D800
• Description: An error occurred while initializing the touch panel.
• Remedy: 1 Connection failure of the panel flat cable Reconnect the panel flat cable.
  2 Connection failure of the LCD flat cable Reconnect the LCD flat cable.
  3 Touch panel ASSY failure Replace the touch panel ASSY.
  4 Panel PCB failure Replace the panel PCB ASSY.
  5 LCD panel ASSY failure Replace the LCD panel ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: DB00
• Description: A communication error occurred between the main ASIC and the recording ASIC.
• Remedy: <User Check>
  • Install the latest main firmware.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: E000
• Description: An error occurred in the ROM check sum.
• Remedy: <User Check>
  • Install the latest main firmware.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: E100
• Description: Program error
• Remedy: <User Check>
  • Install the latest main firmware.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: E500
• Description: An error occurred during access to the DRAM in the Main PCB ASSY.
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Code: E600
• Description: Write error in the EEPROM of the Main PCB ASSY
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Code: E701
• Description: System error in the flash ROM
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Code: E702
• Description: Read error in the flash ROM
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Code: E900
• Description: An error occurred while initializing the NFC.
• Remedy: 1 Connection failure of the panel flat cable Reconnect the panel flat cable.
  2 Connection failure of the NFC flat cable Reconnect the NFC flat cable.
  3 Connection failure of the ten key PCB flat cable Reconnect the ten key PCB flat cable.
  4 Panel PCB failure Replace the panel PCB ASSY.
  5 NFC PCB failure Replace the NFC PCB ASSY.
  6 Ten key PCB failure Replace the ten key PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: EC00
• Description: Overcurrent was caused because a USB device that did not meet the specifications was inserted into the USB port.
• Remedy: <User Check>
  • Disconnect the USB device from the USB flash memory port and turn the machine OFF. Turn the machine ON again after a while.
  • Replace the USB device with a different one.
  1 USB host PCB failure Replace the USB host PCB ASSY.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: F900
• Description: The spec code was not entered correctly.
• Remedy: 1 The power was turned OFF while function code 74 was running. Reenter the spec code. (Refer to “1.3.27 Configure for country/region and model (Function code 74)” in Chapter 5.)
  2 Main PCB failure Replace the main PCB ASSY.

About Canon Servie Tool V5610

– Canon Service Tool V5610 is a tool used to perform maintenance on Canon printers and reset Canon printers after replacement of parts such as replacing ink absorbents, print heads, printer mainboard, and others. Based on the many cases we have encountered, the Service Tool is most often used to reset ink absorber counter value when the waste ink absorber is full.
– The ink absorber is going to be full of box, it has to be replaced or cleaned the waste ink absorber. Also, replaceing or cleaning the waste ink absorber, you need to repair or reset the waste ink counter value, cause those parts are concerned to each others.
– So using Canon Service Tool V5610 to reset the waste ink counter value becomes effective when the ink absorber is replaced or cleaned.

– Canon Service Tool V5610 can use to fix error code 5B00, 5B02, 5B04, 5B14, 1701, 1702, 1700 on your printer. You must enter Service Mode on your printer to use this Canon Service Tool.
– If the printer can not enter Service Mode, you can not reset it by Canon ST V5610. In this case, change EEPROM on the logic board.

Canon Service Tool V5610 Functions

– Fix Canon printer 7 times/ 8 times red light blinking:

– Fix Canon printer error code: 5B00, 5B01, 1700, 1701

Enter Service Mode on Canon Printer

1. Turn off a printer
2. Press and hold the Resume/Cancel/Stop button
3. Press and hold the ON button (do not release both buttons)
4. Release the Resume/Cancel/Stop button (do not release the ON button)
5. While holding the ON button, press the Resume/Cancel/Stop button 5 times, then release both the ON and Resume/Cancel/Stop buttons together.
– Canon printer in service mode: computer detects new hardware, led on printer goes green light.
For more information about Canon Serice Tool V5610

– Get more information about Epson XP 15000 troubleshooting, click here
– Buy cheap key of Epson WIC Reset Tool, CLICK HERE
– Key Epson Adjustment Program, CLICK HERE
https://dnasofts.com/download-epson-xp-6100-driver-firmware-and-manuals/

Contact us to get support with Brother MFC-L8610CDW Error case

Telegram: https://t.me/hyperaktiv
Facebook: https://www.facebook.com/dngnm/
Or click here to get more ways.

Source:
https://dnasofts.com
https://shop.nguyendangnam.com/