Brother HL3172CDW fix error codes list

Brother HL3172CDW fix error codes list

– Compatible Printer model: Brother HL3172CDW
– Brother HL3172CDW Error Codes with instructions guide:

• Code: 0100
• Display: Print Unable 01
• Description: ASIC error or motor driver error occurred.
• Remedy: 1 Main PCB failure Replace the main PCB ASSY.

• Code: 0201
• Display: Print Unable 02
• Description: Synchronization signal from main motor cannot be detected. Or main motor speed is unstable after a set period of time.
• Remedy: 1 Main motor harness connection failure Check the main motor harness connection and reconnect it.
  2 Harness connection failure between the low-voltage power supply PCB and main PCB Check the harness connection between the low-voltage power supply PCB and main PCB, and reconnect it.
  3 Main motor failure 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: 0202
• Display: Print Unable 02
• Description: Synchronization signal from process motor cannot be detected. Or process motor speed is unstable after a set period of time.
• Remedy: 1 Process motor harness connection failure Check the process motor harness connection and reconnect it.
  2 Harness connection failure between the low-voltage power supply PCB and main PCB Check the harness connection between the low-voltage power supply PCB and main PCB, and reconnect it.
  3 Process motor failure 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: 0501
• Display: Print Unable 05
• Description: The center thermistor of the fuser unit does not reach the specified temperature within the specified time.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 05
• Description: The center thermistor of the fuser unit does not reach the specified temperature within the specified time.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 05
• Description: The center thermistor of the fuser unit detected a temperature higher than the specified value.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 05
• Description: After the center thermistor of the fuser unit was normally heated, it detected a temperature lower than the specified value.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 05
• Description: The center thermistor of the fuser unit detected a temperature rise greater than the specified value within a set period of time.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 05
• Description: The center thermistor of the fuser unit detected a temperature fall greater than the specified value within a set period of time.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 05
• Description: The center thermistor or side thermistor of the fuser unit detected some temperature error in the hardware.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 05
• Description: When the temperature of the center thermistor of the fuser unit is lower than the idle temperature, the side thermistor of the fuser unit detected a temperature higher than the specified value.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 05
• Description: When the temperature of the center thermistor of the fuser unit is higher than the idle temperature, the side thermistor of the fuser unit detected a temperature lower than the specified value.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Connection failure of the center or side thermistor harness of the fuser unit Check the harness connection of the center or side thermistor of the fuser unit and reconnect them.
  2 Connection failure of the heater harness of the fuser unit Check the harness connection of the heater of the fuser unit and reconnect it.
  3 Harness connection failure of the eject sensor PCB Check the harness connection of the eject sensor PCB and reconnect it.
  4 Harness connection failure of the low-voltage power supply PCB Check the harness connection of the low-voltage power supply PCB and reconnect it.
  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
• Display: Print Unable 08
• Description: Error occurred in the internal temperature sensor.
• Remedy: 1 Harness connection failure of the internal temperature sensor Check the harness connection of the internal temperature sensor and reconnect it.
  2 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  3 Internal temperature sensor failure Replace the internal temperature sensor.
  4 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 0900
• Display: Print Unable 09
• Description: Machine detected that supplied power was unstable.
• Remedy: <User Check> – Turn the power OFF and ON again after several seconds to check if the error code disappears.
  1 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY. Reset the irregular power supply detection counter after replacement.
  2 Main PCB failure Replace the main PCB ASSY.
  Note: The irregular power supply detection error (Error code 0900) occurs when there is a large distortion of 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: 0A02
• Display: Print Unable 0A
• Description: The main fan failure was detected.
• Remedy: 1 Harness connection failure of the main fan Check the harness connection of the main fan and reconnect it.
  2 Harness connection failure of the high-voltage power supply PCB Check the high-voltage power supply PCB harness connection and reconnect it.
  3 Harness connection failure between the low-voltage power supply PCB and main PCB Check the harness connection between the low-voltage power supply PCB and main PCB, and reconnect it.
  4 Main fan failure Replace the main fan.
  5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  6 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 0B01
• Display: Print Unable 0B
• Description: Error in the high-voltage power supply PCB ASSY while the machine is in operation.
• Remedy: 1 Harness connection failure of the high-voltage power supply PCB Check the high-voltage power supply PCB harness connection and reconnect it.
  2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 0B02
• Display: Print Unable 0B
• Description: Error in the high-voltage power supply PCB ASSY in the ready state.
• Remedy: 1 Harness connection failure of the high-voltage power supply PCB Check the high-voltage power supply PCB harness connection and reconnect it.
  2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 0C00
• Display: Print Unable 0C
• Description: Error occurred in the density sensor.
• Remedy: 1 Registration mark L PCB harness connection failure Check the registration mark L PCB harness connection and reconnect it.
  2 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  3 Registration mark L PCB ASSY failure Replace the registration mark L PCB ASSY.
  4 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 1003
• Display: Print Unable 10
• Description: The registration mark sensor R is dirty and cannot normally receive reflected light.
• Remedy: 1 Registration mark sensor R dirty Clean the registration mark sensor R.
  2 Registration mark R PCB harness connection failure Check the registration mark R PCB harness connection and reconnect it.
  3 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  4 Registration mark R PCB ASSY failure Replace the registration mark R PCB ASSY.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 1004
• Display: Print Unable 10
• Description: The registration mark sensor L is dirty and cannot normally receive reflected light.
• Remedy: 1 Registration mark sensor L dirty Clean the registration mark sensor L.
  2 Registration mark L PCB harness connection failure Check the Registration mark L PCB harness connection and reconnect it.
  3 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  4 Registration mark L PCB ASSY failure Replace the registration mark L PCB ASSY.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 1D01
• Display: Print Unable 1D
• Description: Communication error occurred in the LED ASSY (Black).
• Remedy: <User Check> – Install the toner cartridge.
  1 Connection failure of the flat cable of each LED ASSY Check the flat cable connection of each LED ASSY and reconnect it.
  2 LED control PCB harness connection failure Check the LED control PCB harness connection and reconnect it.
  3 Flat cable failure of each LED ASSY Replace the flat cable of each LED ASSY.
  4 Each LED ASSY failure Replace the each LED ASSY.
  5 LED control PCB failure Replace the LED control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 1D02
• Display: Print Unable 1D
• Description: Communication error occurred in the LED ASSY (Yellow).
• Remedy: <User Check> – Install the toner cartridge.
  1 Connection failure of the flat cable of each LED ASSY Check the flat cable connection of each LED ASSY and reconnect it.
  2 LED control PCB harness connection failure Check the LED control PCB harness connection and reconnect it.
  3 Flat cable failure of each LED ASSY Replace the flat cable of each LED ASSY.
  4 Each LED ASSY failure Replace the each LED ASSY.
  5 LED control PCB failure Replace the LED control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 1D03
• Display: Print Unable 1D
• Description: Communication error occurred in the LED ASSY (Magenta).
• Remedy: <User Check> – Install the toner cartridge.
  1 Connection failure of the flat cable of each LED ASSY Check the flat cable connection of each LED ASSY and reconnect it.
  2 LED control PCB harness connection failure Check the LED control PCB harness connection and reconnect it.
  3 Flat cable failure of each LED ASSY Replace the flat cable of each LED ASSY.
  4 Each LED ASSY failure Replace the each LED ASSY.
  5 LED control PCB failure Replace the LED control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 1D04
• Display: Print Unable 1D
• Description: Communication error occurred in the LED ASSY (Cyan).
• Remedy: <User Check> – Install the toner cartridge.
  1 Connection failure of the flat cable of each LED ASSY Check the flat cable connection of each LED ASSY and reconnect it.
  2 LED control PCB harness connection failure Check the LED control PCB harness connection and reconnect it.
  3 Flat cable failure of each LED ASSY Replace the flat cable of each LED ASSY.
  4 Each LED ASSY failure Replace the each LED ASSY.
  5 LED control PCB failure Replace the LED control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 1E01
• Display: Print Unable 1E
• Description: Access is unavailable between the main PCB and LED control PCB.
• Remedy: 1 LED control PCB harness connection failure Check the LED control PCB harness connection and reconnect it.
  2 LED control PCB failure Replace the LED control PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 1E02
• Display: Print Unable 1E
• Description: Read/Write is unavailable between the main PCB and LED control PCB.
• Remedy: 1 LED control PCB harness connection failure Check the LED control PCB harness connection and reconnect it.
  2 LED control PCB failure Replace the LED control PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 3801
• Display: Print Unable 38
• Description: Error occurred in the external temperature/humidity sensor.
• Remedy: 1 External temperature/humidity sensor harness connection failure Check the external temperature/humidity sensor harness connection and reconnect it.
  2 External temperature/humidity sensor failure Replace the external temperature/ humidity sensor PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

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

• Code: 4001
• Display: Drum End Soon:BK
• Description: Number of the drum unit (Black) rotations reaches the upper limit soon.
• Remedy: <User Check> – Prepare a new drum unit.
  1 Main PCB failure if the error code remains after replacing with a new drum unit and resetting the drum counter
  Replace the main PCB ASSY.

• Code: 4002
• Display: Drum End Soon:Y
• Description: Number of the drum unit (Yellow) rotations reaches the upper limit soon.
• Remedy: <User Check> – Prepare a new drum unit.
  1 Main PCB failure if the error code remains after replacing with a new drum unit and resetting the drum counter
  Replace the main PCB ASSY.

• Code: 4003
• Display: Drum End Soon:M
• Description: Number of the drum unit (Magenta) rotations reaches the upper limit soon.
• Remedy: <User Check> – Prepare a new drum unit.
  1 Main PCB failure if the error code remains after replacing with a new drum unit and resetting the drum counter
  Replace the main PCB ASSY.

• Code: 4004
• Display: Drum End Soon:C
• Description: Number of the drum unit (Cyan) rotations reaches the upper limit soon.
• Remedy: <User Check> – Prepare a new drum unit.
  1 Main PCB failure if the error code remains after replacing with a new drum unit and resetting the drum counter
  Replace the main PCB ASSY.

• Code: 4201
• Display: Replace Drum:BK
• Description: Number of the drum unit (Black) rotations has reached the upper limit. (Printing is not stopped.)
• Remedy: <User Check> – Prepare a new drum unit.
  1 Main PCB failure if the error code remains after replacing with a new drum unit and resetting the drum counter Replace the main PCB ASSY.

• Code: 4202
• Display: Replace Drum:Y
• Description: Number of the drum unit (Yellow) rotations has reached the upper limit. (Printing is not stopped.)
• Remedy: <User Check> – Prepare a new drum unit.
  1 Main PCB failure if the error code remains after replacing with a new drum unit and resetting the drum counter Replace the main PCB ASSY.

• Code: 4203
• Display: Replace Drum:M
• Description: Number of the drum unit (Magenta) rotations has reached the upper limit. (Printing is not stopped.)
• Remedy: <User Check> – Prepare a new drum unit.
  1 Main PCB failure if the error code remains after replacing with a new drum unit and resetting the drum counter Replace the main PCB ASSY.

• Code: 4204
• Display: Replace Drum:C
• Description: Number of the drum unit (Cyan) rotations has reached the upper limit. (Printing is not stopped.)
• Remedy: <User Check> – Prepare a new drum unit.
  1 Main PCB failure if the error code remains after replacing with a new drum unit and resetting the drum counter Replace the main PCB ASSY.

• Code: 4300
• Display: Belt End Soon
• Description: The belt unit will reach the end of life soon. (90%) (Printing is not stopped.)
• Remedy: <User Check> – Prepare a new belt unit.
  1 Main PCB failure if the error code remains after replacing with a new belt unit and resetting the belt counter
  Replace the main PCB ASSY.

• Code: 4400
• Display: Replace Belt
• Description: Number of pages printed with the belt unit has reached the upper limit. (Printing is not stopped.)
• Remedy: <User Check> – Prepare a new belt unit.
  1 Main PCB failure if the error code remains after replacing with a new belt unit and resetting the belt counter
  Replace the main PCB ASSY.

• Code: 4500
• Display: Replace Fuser
• Description: Printable pages set for the fuser unit has reached the upper limit. (Printing is not stopped.)
• Remedy: 1 Main PCB failure if the error code remains after replacing with a new fuser unit and resetting the fuser unit counter
  Replace the main PCB ASSY.

• Code: 4700
• Display: WT Box End Soon
• Description: The waste toner sensor detected that the waste toner box is almost full.
• Remedy: <User Check> – Replace the waste toner box.
  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: 4800
• Display: Replace WT Box
• 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 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 4B01
• Display: Toner Low:BK
• 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 if the error code remains after replacing with a new toner cartridge and resetting the toner counter
  Replace the main PCB ASSY.

• Code: 4B02
• Display: Toner Low:Y
• 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 if the error code remains after replacing with a new toner cartridge and resetting the toner counter
  Replace the main PCB ASSY.

• Code: 4B03
• Display: Toner Low:M
• 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 if the error code remains after replacing with a new toner cartridge and resetting the toner counter
  Replace the main PCB ASSY.

• Code: 4B04
• Display: Toner Low:C
• 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 if the error code remains after replacing with a new toner cartridge and resetting the toner counter
  Replace the main PCB ASSY.

• Code: 4C01
• Display: Replace Toner
• 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 Process drive unit damaged Replace the process drive unit.
  2 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter Replace the main PCB ASSY.

• Code: 4C02
• Display: Replace Toner
• 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 Process drive unit damaged Replace the process drive unit.
  2 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter Replace the main PCB ASSY.

• Code: 4C03
• Display: Replace Toner
• 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 Process drive unit damaged Replace the process drive unit.
  2 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter Replace the main PCB ASSY.

Solved Brother HL3172CDW Error codes

• Code: 4C04
• Display: Replace Toner
• 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 Process drive unit damaged Replace the process drive unit.
  2 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter Replace the main PCB ASSY.

• Code: 4C05
• Display: Replace Toner
• 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 Process drive unit damaged Replace the process drive unit.
  2 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner counter Replace the main PCB ASSY.

• Code: 4F01
• Display: Cartridge Error
• Description: The new toner sensor of the toner cartridge (Black) could not detect a new cartridge properly.
• Remedy: <User Check> – Under the instruction of repair technician, reset the toner manual.
  1 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner manual
  Replace the main PCB ASSY.

• Code: 4F02
• Display: Cartridge Error
• Description: The new toner sensor of the toner cartridge (Yellow) could not detect a new cartridge properly.
• Remedy: <User Check> – Under the instruction of repair technician, reset the toner manual.
  1 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner manual
  Replace the main PCB ASSY.

• Code: 4F03
• Display: Cartridge Error
• Description: The new toner sensor of the toner cartridge (Magenta) could not detect a new cartridge properly.
• Remedy: <User Check> – Under the instruction of repair technician, reset the toner manual.
  1 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner manual
  Replace the main PCB ASSY.

• Code: 4F04
• Display: Cartridge Error
• Description: The new toner sensor of the toner cartridge (Cyan) could not detect a new cartridge properly.
• Remedy: <User Check> – Under the instruction of repair technician, reset the toner manual.
  1 Main PCB failure if the error code remains after replacing with a new toner cartridge and resetting the toner manual
  Replace the main PCB ASSY.

• Code: 5002
• Display: Replace PF Kit1
• Description: Printable pages set for the PF kit 1 has reached the upper limit. (Printing is not stopped.)
• Remedy: 1 PF kit 1 worn out Replace the PF kit 1.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: 6001
• Display: Cover is Open
• Description: The top cover sensor detected that the top cover was open.
• Remedy: <User Check> – Close the top cover unit.
  1 High-voltage power supply PCB harness connection failure Check the high-voltage power supply PCB harness connection and reconnect it.
  2 Top cover sensor failure Replace the high-voltage power supply PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 6004
• Display: Cover is Open
• Description: Eject sensor detected that fuser cover ASSY was open.
• Remedy: <User Check> – Close the fuser cover.
  1 Paper jam at the eject actuator Remove the jammed paper.
  2 Eject actuator that has come off or that has been caught Re-assemble the eject actuator.
  3 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  4 Fuser cover ASSY installation failure Re-assemble the fuser cover ASSY.
  5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY

• Code: 6101
• Display: No Toner
• Description: New toner detection terminal not being conducting caused the machine to detected that a toner cartridge (Black) is not set.
• Remedy: <User Check> – Re-insert the toner cartridge.
  1 Dirt on the terminal of the high-voltage power supply PCB Clean the terminal of the high-voltage power supply PCB.
  2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 6102
• Display: No Toner
• Description: New toner detection terminal not being conducting caused the machine to detected that a toner cartridge (Yellow) is not set.
• Remedy: <User Check> – Re-insert the toner cartridge.
  1 Dirt on the terminal of the high-voltage power supply PCB Clean the terminal of the high-voltage power supply PCB.
  2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 6103
• Display: No Toner
• Description: New toner detection terminal not being conducting caused the machine to detected that a toner cartridge (Magenta) is not set.
• Remedy: <User Check> – Re-insert the toner cartridge.
  1 Dirt on the terminal of the high-voltage power supply PCB Clean the terminal of the high-voltage power supply PCB.
  2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 6104
• Display: No Toner
• Description: New toner detection terminal not being conducting caused the machine to detected that a toner cartridge (Cyan) is not set.
• Remedy: <User Check> – Re-insert the toner cartridge.
  1 Dirt on the terminal of the high-voltage power supply PCB Clean the terminal of the high-voltage power supply PCB.
  2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 6208
• Display: Drum !
• Description: Immediately after power was turned ON or the top cover unit was closed, GRID current failure indicated that no drum unit (Color) was set.
• Remedy: <User Check> – Re-insert the drum unit. – Clean the GRID terminals of the drum unit. – Clean the corona wire by sliding the green tab of each drum unit for all four colors several times.
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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: 6209
• Display: Drum !
• Description: Immediately after power was turned ON or the top cover unit was closed, GRID current failure indicated that one of the drum unit (Color) was not set.
• Remedy: <User Check> – Re-insert the drum unit. – Clean the GRID terminals of the drum unit. – Clean the corona wire by sliding the green tab of each drum unit for all four colors several times.
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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: 620A
• Display: Drum !
• Description: Immediately after power was turned ON or the top cover unit was closed, GRID current failure indicated that no drum unit (Black) was set.
• Remedy: <User Check> – Re-insert the drum unit. – Clean the GRID terminals of the drum unit. – Clean the corona wire by sliding the green tab of each drum unit for all four colors several times.
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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
• Display: No Waste Toner
• Description: BCLN terminal current value detected that no waste toner box was set.
• Remedy: <User Check> – Re-insert the waste toner box in the correct position. – Clean the BCLN terminals of the waste toner box.
  1 Dirt on the BCLN terminals of the main body Clean the BCLN terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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: 6400
• Display: No Belt Unit
• Description: The registration mark sensor detected that no belt unit was set.
• Remedy: <User Check> – Re-insert the belt unit.
  1 Registration mark L PCB harness connection failure Check the registration mark L PCB harness connection and reconnect it.
  2 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  3 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  4 Registration mark sensor L failure Replace the registration mark L PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 6801
• Display: Cooling Down
• Description: The internal temperature sensor detected a temperature higher than the specified value.
• Remedy: <User Check> – Decrease the room temperature. – Place the machine away from a heater.
  1 Internal temperature sensor harness connection failure Check the internal temperature sensor harness connection and reconnect it.
  2 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  3 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6901
• Display: Fuser Error
• Description: Some fuser unit error occurred at power-ON or upon recovery from sleep mode.
• Remedy: 1 Each harness connection failure of the fuser unit Check each harnesses connection of the fuser unit and reconnect them.
  2 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  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 the power OFF. After checking that the fuser unit has cooled down, turn the power ON again. After the machine is left as it is for about 10 minutes, this problem may be resolved.

• Code: 6902
• Display: Self-Diagnostic
• 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 Each harness connection failure of the fuser unit Check each harnesses connection of the fuser unit and reconnect them.
  2 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  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 the power OFF. After checking that the fuser unit has cooled down, turn the power ON again. After the machine is left as it is for about 10 minutes, this problem may be resolved.

• Code: 6A00
• Display: Drum !
• Description: Electric discharge that may be caused by dirt on the corona wire of the drum unit was detected.
• Remedy: <User Check> – Clean the corona wire by sliding the green tab of each drum unit for all four colors several times. – Clean the drum unit. ) – Replace the drum unit
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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
• Display: Drum Stop
• Description: Electric discharge was detected when the number of the drum unit (Black) rotations had become more than twice of the upper limit.
• Remedy: <User Check> – Replace the drum unit.
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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: 6B02
• Display: Drum Stop
• Description: Electric discharge was detected when the number of the drum unit (Yellow) rotations had become more than twice of the upper limit.
• Remedy: <User Check> – Replace the drum unit.
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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: 6B03
• Display: Drum Stop
• Description: Electric discharge was detected when the number of the drum unit (Magenta) rotations had become more than twice of the upper limit.
• Remedy: <User Check> – Replace the drum unit.
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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: 6B04
• Display: Drum Stop
• Description: Electric discharge was detected when the number of the drum unit (Cyan) rotations had become more than twice of the upper limit.
• Remedy: <User Check> – Replace the drum unit.
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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: 6B0A
• Display: Drum !
• Description: GRID current failure was detected in a state other than immediately after power was turned ON or the top cover unit was closed.
• Remedy: <User Check> – Re-insert the drum unit. – Clean the GRID terminals of the drum unit. ) – Clean the corona wire by sliding the green tab of each drum unit for all four colors several times.
  1 Dirt on the GRID terminals of the main body Clean the GRID terminals of the main body. )
  2 Dirt on the terminals of the high-voltage power supply PCB Clean the terminals of the high-voltage power supply PCB.
  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: 6E00
• Display: Toner Error
• Description: The develop release sensor detected the develop roller disengagement or engagement failure.
• Remedy: 1 Develop release sensor harness connection failure Check the develop release sensor harness connection and reconnect it.
  2 High-voltage power supply PCB harness connection failure Check the high-voltage power supply PCB harness connection and reconnect it.
  3 Develop release sensor failure Replace the develop release sensor PCB ASSY.
  4 Misalignment of develop clutch cam Check the develop clutch cam position and re-assemble it.
  5 Develop release clutch failure Replace the develop release clutch.
  6 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 7000
• Display: Jam Inside
• Description: After the registration rear sensor detects the end of paper pass, the eject sensor does not detect paper pass.
• Remedy: <User Check> – Remove the jammed paper.
  1 Foreign object inside machine Remove foreign object.
  2 Eject actuator that has come off or that has been caught Re-assemble the eject actuator.
  3 Fuser cover installation failure Re-assemble the fuser cover.
  4 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  5 Fuser cover failure Replace the fuser cover.
  6 Eject sensor failure Replace the eject sensor PCB ASSY.
  7 Fuser unit failure Replace the fuser unit.
  8 Main PCB failure Replace the main PCB ASSY

• Code: 7100
• Display: Jam Rear
• Description: After the registration rear sensor detected that paper has passed, eject sensor continues to detect paper pass.
• Remedy: <User Check> – Remove the jammed paper.
  1 Foreign object at the back of the machine Remove foreign object.
  2 Eject actuator catching on some position Re-assemble the eject actuator.
  3 Fuser cover installation failure Re-assemble the fuser cover.
  4 Back cover installation failure Re-assemble the back cover.
  5 Eject sensor failure Replace the eject sensor PCB ASSY.
  6 Back cover failure Replace the back cover.
  7 Eject roller 1 failure Replace the fuser cover.
  8 Main PCB failure Replace the main PCB ASSY.

• Code: 7300
• Display: Jam Tray 1
• Description: After the paper feed sensor detects paper pass, the registration front sensor does not detect paper pass after a set period of time.
• Remedy: <User Check> – Remove the jammed paper.
  1 Foreign object inside machine Remove foreign object.
  2 Paper dust cleaning roller installation failure Re-assemble the paper dust cleaning roller.
  3 Registration front actuator that has come off or that has been caught Re-assemble the registration front actuator.
  4 Registration rear actuator that has come off or that has been caught Re-assemble the registration rear actuator.
  5 Registration front/rear/manual feed sensor PCB harness connection failure Check the registration front/rear/manual feed sensor PCB harness connection and reconnect it.
  6 Registration front/rear/manual feed sensor PCB failure Replace the paper feed unit.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 7700
• Display: Jam 2-sided
• 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.
  1 Foreign object inside the duplex path Remove foreign object.
  2 Fuser cover installation failure Re-assemble the fuser cover.
  3 Back cover installation failure Re-assemble the back cover.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 7900
• Display: Jam Manual Feed
• Description: After the manual feed sensor detects pass of paper fed from the manual feed slot, the registration rear sensor does not detect paper pass after a set period of time. Or after the manual feed sensor detects paper pass, the registration rear sensor detects paper pass within a set period of time.
• Remedy: <User Check> – Remove paper that is crammed in the manual feed slot. – Check if the paper whose thickness is not prescribed is used. – Remove the jammed paper. – Check if paper is removed after manual feed printing is started.
  1 Foreign object inside the manual feed path Remove foreign object.
  2 Registration rear actuator that has come off or that has been caught Re-assemble the registration rear actuator.
  3 Registration clutch harness connection failure Check the registration clutch harness connection and reconnect it.
  4 Registration front/rear/manual feed sensor PCB harness connection failure Check the registration front/rear/manual feed sensor PCB harness connection and reconnect it.
  5 Registration rear sensor failure Replace the paper feed unit.
  6 Registration clutch failure Replace the registration clutch.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 8501
• Display: No Tray
• Description: The paper feed sensor detected that the paper tray was not set (before print registration in engine) in 2-sided printing.
• Remedy: <User Check> – Set the paper tray correctly
  1 Foreign object around the area from which paper tray is inserted Remove foreign object.
  2 Paper feed actuator that has come off or that has been caught Re-assemble the paper feed actuator.
  3 Paper feed sensor PCB harness connection failure Check the paper feed sensor PCB harness connection and reconnect it.
  4 Paper feed sensor PCB failure Replace the paper feed unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 8505
• Display: No Tray
• Description: The paper feed sensor detected that the paper tray was not set (after print registration in engine) in 2-sided printing.
• Remedy: <User Check> – Set the paper tray correctly
  1 Foreign object around the area from which paper tray is inserted Remove foreign object.
  2 Paper feed actuator that has come off or that has been caught Re-assemble the paper feed actuator.
  3 Paper feed sensor PCB harness connection failure Check the paper feed sensor PCB harness connection and reconnect it.
  4 Paper feed sensor PCB failure Replace the paper feed unit.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 8903
• Display: 2-sided Disabled
• Description: The back cover sensor detected that the back cover was open (before print registration in engine) in 2-sided printing.
• Remedy: <User Check> – Close the back cover.
  1 Back cover sensor harness connection failure Check the back cover sensor harness connection and reconnect it.
  2 Back cover sensor installation failure Re-assemble 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 harness ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 8904
• Display: 2-sided Disabled
• Description: The back cover sensor detected that the back cover was open (after print registration in engine) in 2-sided printing.
• Remedy: <User Check> – Close the back cover.
  1 Back cover sensor harness connection failure Check the back cover sensor harness connection and reconnect it.
  2 Back cover sensor installation failure Re-assemble 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 harness ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 8A01
• Display: Size Error DX
• Description: The registration rear sensor detected that the fed paper was larger or smaller than the specified size in 2-sided printing.
• Remedy: <User Check> – Use the Letter to Legal size paper.
  1 Registration rear actuator catching on some position Re-assemble the registration rear actuator.
  2 Registration rear sensor failure Replace the paper feed unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 8C00
• Display: Manual Feed
• Description: No paper is in the manual feed slot when printing from the manual feed slot.
• Remedy: <User Check> – Load paper to the manual feed slot.
  1 Registration front/rear/manual feed sensor PCB harness connection failure Check the registration front/rear/manual feed sensor PCB harness connection and reconnect it.
  2 Manual feed actuator catching on some position Re-assemble the manual feed actuator.
  3 Manual feed sensor failure Replace the paper feed unit.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 8D01
• Display: Short paper
• 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 140 mm or more.
  1 Registration rear actuator catching on some position Re-assemble the registration rear actuator.
  2 Registration rear sensor failure Replace the paper feed unit.
  3 Main PCB failure Replace the main PCB ASSY

• Code: 8D02
• Display: Small paper
• Description: When printing with the back cover closed, the paper size selected in the print data is smaller than the valid size.
• Remedy: <User Check> – Check whether the back cover is open.
  1 Main PCB failure
  Replace the main PCB ASSY.

• Code: 9002
• Display: Size Mismatch
• Description: The size of paper loaded in the paper tray and the one specified from the driver are not same when paper is fed from the paper tray.
• Remedy: <User Check> – When specifying the paper in the driver, set the paper size of the paper that is actually set.
  1 Registration rear actuator catching on some position Re-assemble the registration rear actuator.
  2 Registration rear sensor failure Replace the paper feed unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 9302
• Display: No Paper
• Description: When paper was fed from the paper tray, the paper feed sensor detected that no paper was in the paper tray.
• Remedy: <User Check> – Load paper to the paper tray.
  1 Foreign object in pick-up roller Remove foreign object.
  2 Paper feed sensor PCB harness connection failure Check the paper feed sensor PCB harness connection and reconnect it.
  3 Paper feed actuator catching on some position Re-assemble the paper feed actuator.
  4 Paper feed sensor failure Replace the paper feed unit.
  5 Gear failure inside of process drive unit Replace the process drive unit.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 9701
• Display: Size Error DX
• Description: For 2-sided printing, the tray whose paper size was not supported by 2-sided printing was selected.
• Remedy: <User Check> – Set the driver setting to A4 size or equal to or larger than Letter size, and set the same size of paper into the paper tray.
  1 Main PCB failure
  Replace the main PCB ASSY.

• Code: 9801
• Display: Calibrate
• Description: 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 Registration mark sensor L dirty Clean the registration mark sensor L.
  2 Failure in printed measurement pattern image If failure occurs when printing ‘2D3S YCMK_ _A’ in ‘Function code 71’.
  3 Registration mark L PCB harness connection failure Check the registration mark L PCB harness connection and reconnect it. 4 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it. 5 Density sensor failure Replace the registration mark L PCB ASSY. 6 Main PCB failure Replace the main PCB ASSY.

• Code: 9802
• Display: Calibrate
• 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
• Display: Calibrate
• 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 Registration mark sensor L dirty Clean the registration mark sensor L.
  2 Failure in printed measurement pattern image If failure occurs when printing ‘2D3S YCMK_ _A’ in ‘Function code 71’.
  3 Registration mark L PCB harness connection failure Check the registration mark L PCB harness connection and reconnect it.
  4 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  5 Density sensor failure Replace the registration mark L PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 9804
• Display: Calibrate
• Description: 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 Registration mark sensor L dirty Clean the registration mark sensor L.
  2 Failure in printed measurement pattern image If failure occurs when printing ‘2D3S YCMK_ _A’ in ‘Function code 71’.
  3 Registration mark L PCB harness connection failure Check the registration mark L PCB harness connection and reconnect it.
  4 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  5 Density sensor failure Replace the registration mark L PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 9901
• Display: Registration
• Description: Error occurred with the value measured during adjustment of color registration.
• 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 Registration mark sensor L/ registration mark sensor R dirty Clean the registration mark sensor L/ registration mark sensor R.
  2 Registration mark L PCB/ registration mark R PCB harness connection failure Check the registration mark L PCB/ registration mark R PCB harness connection and reconnect it.
  3 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  4 Failure in printed measurement pattern image If failure occurs when printing ‘2D3S YCMK_ _A’ in ‘Function code 71’.
  5 Registration mark sensor L failure Replace the registration mark L PCB ASSY.
  6 Registration mark sensor R failure Replace the registration mark R PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 9902
• Display: Registration
• Description: Dot counter or develop roller counter of color toner has reached the upper limit during adjustment of color registration.
• Remedy: <User Check> – Replace the corresponding toner cartridge.
  1 Main PCB failure
  Replace the main PCB ASSY.

• Code: 9903
• Display: Registration
• Description: Error occurred during patch data printing in adjustment of color registration.
• 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 Registration mark sensor L/ registration mark sensor R dirty Clean the registration mark sensor L/ registration mark sensor R.
  2 Registration mark L PCB/ registration mark R PCB harness connection failure Check the registration mark L PCB/ registration mark R PCB harness connection and reconnect it.
  3 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it. 4 Failure in printed measurement pattern image If failure occurs when printing ‘2D3S YCMK_ _A’ in ‘Function code 71’.
  5 Registration mark sensor L failure Replace the registration mark L PCB ASSY.
  6 Registration mark sensor R failure Replace the registration mark R PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 9A01
• Display: Registration
• Description: 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 Registration mark sensor L/ registration mark sensor R dirty Clean the registration mark sensor L/ registration mark sensor R.
  2 Registration mark L PCB/ registration mark R PCB harness connection failure Check the registration mark L PCB/ registration mark R PCB harness connection and reconnect it.
  3 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  4 Failure in printed measurement pattern image If failure occurs when printing ‘2D3S YCMK_ _A’ in ‘Function code 71’.
  5 Registration mark sensor L failure Replace the registration mark L PCB ASSY.
  6 Registration mark sensor R failure Replace the registration mark R PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 9A02
• Display: Registration
• 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
• Display: Registration
• Description: 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 Registration mark sensor L/ registration mark sensor R dirty Clean the registration mark sensor L/ registration mark sensor R.
  2 Registration mark L PCB/ registration mark R PCB harness connection failure Check the registration mark L PCB/ registration mark R PCB harness connection and reconnect it.
  3 Eject sensor PCB harness connection failure Check the eject sensor PCB harness connection and reconnect it.
  4 Failure in printed measurement pattern image If failure occurs when printing ‘2D3S YCMK_ _A’ in ‘Function code 71’.
  5 Registration mark sensor L failure Replace the registration mark L PCB ASSY.
  6 Registration mark sensor R failure Replace the registration mark R PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: C001
• Display: Log Access Error
• Description: Timeout occurred with access request sent to server due to incorrect server address, network disconnection, or inactive server.
• Remedy: <User Check> – Refer to User’s guide and reconfigure network settings. – Check the wiring of the LAN cables. – Check the wireless LAN settings.
  1 Wireless LAN PCB connector connection failure Check the wireless LAN PCB connector connection and reconnect it.
  2 Wireless LAN PCB failure Replace the wireless LAN PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C002
• Display: Log Access Error
• 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 User’s guide and reconfigure network settings. – Check the wiring of the LAN cables. – Check the wireless LAN settings.
  1 Wireless LAN PCB connector connection failure Check the wireless LAN PCB connector connection and reconnect it.
  2 Wireless LAN PCB failure Replace the wireless LAN PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C003
• Display: Log Access Error
• Description: Access to a file is unavailable due to incorrect directory name, no write permission on directory, file write lock, or no write permission on file.
• Remedy: <User Check> – Refer to User’s guide and reconfigure network settings. – Check the wiring of the LAN cables. – Check the wireless LAN settings.
  1 Wireless LAN PCB connector connection failure Check the wireless LAN PCB connector connection and reconnect it.
  2 Wireless LAN PCB failure Replace the wireless LAN PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C004
• Display: Log Access Error
• Description: The current time necessary for user authentication is unavailable due to machine clock (RTC) not being set and time not being obtained through SNTP.
• Remedy: <User Check> – Refer to User’s guide and reconfigure network settings. – Check the wiring of the LAN cables. – Check the wireless LAN settings.
  1 Wireless LAN PCB connector connection failure Check the wireless LAN PCB connector connection and reconnect it.
  2 Wireless LAN PCB failure Replace the wireless LAN PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C700
• Display: Out of Memory
• 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 it.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: C800
• Display: Out of Memory
• 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 it.
  1 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: E000
• Display: Print Unable E0
• Description: Some ROM checksum error occurred.
• Remedy: <User Check> – Install the latest firmware.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: E100
• Display: Print Unable E1
• Description: Program error.
• Remedy: <User Check> – Install the latest firmware.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: E500
• Display: Print Unable E5
• Description: Error occurred when DRAM on the main PCB ASSY was accessed.
• Remedy: 1 Main PCB failure
  Replace the main PCB ASSY.

• Code: E600
• Display: Print Unable E6
• Description: Error occurred during writing to EEPROM on the main PCB ASSY.
• Remedy: 1 Main PCB failure
  Replace the main PCB ASSY.

• Code: F900
• Display: Machine Error F9
• Description: Setting by country code is not entered.
• Remedy: 1 During function code 74, power is turned OFF. Enter the Setting by country code again. ‘ 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/

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