[SOLVED] Quick fix Konica-Minolta 5020i list error codes

[SOLVED] Quick fix Konica-Minolta 5020i list error codes

– Compatible Printer model: Konica-Minolta bizhub 5020i
– Konica-Minolta bizhub 5020i Error Codes with quick guides:

• Code: 0102
• Description: Communication error between the engine ASIC and motor driver or faulty motor driver.
• Troubleshooting Guides: 1 Connection failure of the paper feed motor harness Reconnect the paper feed motor harness.
  2 Paper feed motor failure Replace the paper feed motor.
  3 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.
• Troubleshooting Guides: 1 Connection failure of the paper feed motor harness Reconnect the paper feed motor harness.
  2 Damaged fuser gear Replace the fuser gear.
  3 Paper feed motor failure Replace the paper feed motor.
  4 Damaged fuser unit Replace the fuser unit.
  5 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  6 Damaged part in drive sub ASSY Replace the main frame L ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 0203
• Description: Eject motor failure was detected.
• Troubleshooting Guides: 1 Connection failure of the eject motor harness Reconnect the eject motor harness.
  2 Eject motor failure Replace the eject motor.
  3 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  4 Damaged part in eject gears Replace the main frame L 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 (second time).
• Troubleshooting Guides: 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: 0305
• Description: Cannot detect the lock signal of the polygon motor for the laser unit (first time).
• Troubleshooting Guides: 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: 0401
• Description: Cannot detect the synchronized signal of the polygon motor for the laser unit (second time).
• Troubleshooting Guides: 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: 0405
• Description: Cannot detect the synchronized signal of the polygon motor for the laser unit (first time).
• Troubleshooting Guides: 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: 0501
• Description: The center thermistor of the fuser unit has not reached the specified temperature within the specified time.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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: 0508
• Description: The side thermistor of the fuser unit did not detect a temperature rise when the heater was ON.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor harness.
  4 Connection failure of the lowvoltage power supply harness Reconnect the low-voltage power supply 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.
• Troubleshooting Guides: 1 Connection failure of the internal temperature sensor harness Reconnect the internal temperature sensor harness.
  2 Internal temperature sensor failure Replace the main frame L ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 0900
• Description: Detected irregular power supply for more than 100 times.
• Troubleshooting Guides: <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 “1.3.31 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 of the low-voltage power supply PCB (error code: 0900) 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 may occur even when the low-voltage power supply PCB ASSY is replaced. Ask the user to review the installation environment.
  • Do not reset the power supply PCB counter before replacing it with a new one. It may cause fire.

• Code: 0A02
• Description: Detected a main fan failure.
• Troubleshooting Guides: 1 Connection failure of the main fan harness Reconnect the main fan harness.
  2 Connection failure of the toner amount detection sensor PCB harness (light emission) Reconnect the toner amount detection sensor PCB harness (light emission).
  3 Main fan failure Replace the main fan.
  4 Low-voltage power supply PCB failure Replace the low-voltage power supply PCB ASSY.
  5 Toner amount detection sensor PCB (light emission) failure Replace the toner amount detection sensor PCB ASSY (light emission).
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 0B01
• Description: An error occurred in the high-voltage power supply PCB ASSY while operating.
• Troubleshooting Guides: <User Check> • Replace the drum unit. (corona wire breakage)
  1 Connection failure of the HVPS flat cable Reconnect the HVPS flat cable.
  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
• Description: An error occurred in the high-voltage power supply PCB ASSY when the machine was in the ready state.
• Troubleshooting Guides: <User Check> • Replace the drum unit. (corona wire breakage)
  1 Connection failure of the HVPS flat cable Reconnect the HVPS flat cable.
  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: 1801
• Description: A communication error occurred between the ASIC and T2 control PCB in the engine.
• Troubleshooting Guides: 1 Malfunction of the LT control PCB Install the latest main firmware.
  2 An LT connector failure (machine side or LT side) Replace the appropriate LT connector of the machine side or LT side.
  3 An LT control PCB failure Replace the appropriate LT control PCB.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 1802
• Description: A communication error occurred between the ASIC and T3 control PCB ASSY in the engine.
• Troubleshooting Guides: 1 Malfunction of the LT control PCB Install the latest main firmware.
  2 An LT connector failure (machine side or LT side) Replace the appropriate LT connector of the machine side or LT side.
  3 An LT control PCB failure Replace the appropriate LT control PCB.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 3801
• Description: A temperature error occurred in the external temperature/humidity sensor.
• Troubleshooting Guides: 1 Connection failure of the external temperature/humidity sensor harness Reconnect the external temperature/humidity sensor harness.
  2 External temperature/humidity sensor failure Replace the main frame L ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 4000
• Description: The number of rotations of the drum unit is reaching the upper limit.
• Troubleshooting Guides: 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: The number of rotations of the drum unit has reached the upper limit. (Printing does not stop.)
• Troubleshooting Guides: 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: 4500
• Description: The number of printable pages of the fuser unit has reached the upper limit.
• Troubleshooting Guides: 1 End of life of the fuser unit Replace the fuser unit. Refer to “1.3.31 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: The number of printable pages of the laser unit has reached the upper limit.
• Troubleshooting Guides: 1 End of life of the laser unit Replace the laser unit. Refer to “1.3.31 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.

• Code: 4B01
• Description: Dot counter or develop roller counter of the toner is reaching the upper limit.
• Troubleshooting Guides: <User Check> • If the machine is on the uneven surface, place it on a level surface.
  1 Connection failure of the relay front harness Reconnect the relay front harness.
  2 New toner actuator coming off or caught in some sections of the machine Reattach the new toner actuator.
  3 Develop joint coming off or caught in some sections of the machine Reattach the develop joint.
  4 New toner sensor failure Replace the relay front PCB ASSY.
  5 Paper feed drive gears failure Replace the main frame L ASSY.
  6 If the error display is not cleared after replacing the toner cartridge with a new one again, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4C01
• Description: Dot counter or develop roller counter of the toner has reached the upper limit.
• Troubleshooting Guides: <User Check> • If the machine is on the uneven surface, place it on a level surface.
  1 Connection failure of the relay front harness Reconnect the relay front harness.
  2 New toner actuator coming off or caught in some sections of the machine Reattach the new toner actuator.
  3 Develop joint coming off or caught in some sections of the machine Reattach the develop joint.
  4 New toner sensor failure Replace the relay front PCB ASSY.
  5 Paper feed drive gears failure Replace the main frame L ASSY.
  6 If the error display is not cleared after replacing the toner cartridge with a new one again, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 4F01
• Description: The new toner sensor could not detect the new toner cartridge correctly.
• Troubleshooting Guides: <User Check> • If the machine is on the uneven surface, place it on a level surface.
  1 Connection failure of the relay front harness Reconnect the relay front harness.
  2 New toner actuator coming off or caught in some sections of the machine Reattach the new toner actuator.
  3 Develop joint coming off or caught in some sections of the machine Reattach the develop joint.
  4 New toner sensor failure Replace the relay front PCB ASSY.
  5 Paper feed drive gears failure Replace the main frame L ASSY.
  6 If the error display is not cleared after replacing the toner cartridge with a new one again, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5001
• Description: Printable pages set for PF kit MP have reached the upper limit.
• Troubleshooting Guides: 1 End of life of the applicable PF kit Replace the applicable PF kit. Refer to “1.3.31 Reset counters for consumable parts (function code: 88)” in Chapter 5 to reset the applicable PF kit counter after the replacement.
  2 If the error display is not cleared after the applicable PF kit counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5002
• Description: Printable pages set for PF kit 1 have reached the upper limit.
• Troubleshooting Guides: 1 End of life of the applicable PF kit Replace the applicable PF kit. Refer to “1.3.31 Reset counters for consumable parts (function code: 88)” in Chapter 5 to reset the applicable PF kit counter after the replacement.
  2 If the error display is not cleared after the applicable PF kit counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5003
• Description: Printable pages set for PF kit 2 have reached the upper limit.
• Troubleshooting Guides: 1 End of life of the applicable PF kit Replace the applicable PF kit. Refer to “1.3.31 Reset counters for consumable parts (function code: 88)” in Chapter 5 to reset the applicable PF kit counter after the replacement.
  2 If the error display is not cleared after the applicable PF kit counter has been reset, the main PCB is faulty. Replace the main PCB ASSY.

• Code: 5004
• Description: Printable pages set for PF kit 3 have reached the upper limit.
• Troubleshooting Guides: 1 End of life of the applicable PF kit Replace the applicable PF kit. Refer to “1.3.31 Reset counters for consumable parts (function code: 88)” in Chapter 5 to reset the applicable PF kit counter after the replacement.
  2 If the error display is not cleared after the applicable PF kit 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.
• Troubleshooting Guides: <User Check> • Close the front cover.
  1 Connection failure of the front cover sensor harness Reconnect the front cover sensor harness.
  2 Connection failure of the relay front harness Reconnect the relay front harness.
  3 Front cover sensor attachment failure Reattach the front cover sensor.
  4 Front cover failure Replace the front cover.
  5 Front cover sensor failure Replace the relay front PCB ASSY.
  6 Relay front PCB failure Replace the relay front PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 6004
• Description: The eject sensor detected that the fuser cover was open.
• Troubleshooting Guides: <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 harness Reconnect the eject sensor 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 the toner cartridge was not set.
• Troubleshooting Guides: <User Check> • Set the toner cartridge correctly.
  1 Toner amount detection sensor PCB (light reception) failure Replace the toner amount detection sensor PCB ASSY (light reception).
  2 Relay front PCB failure Replace the relay front PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 6200
• Description: Detected that the drum unit was not set by detecting the GRID terminal current.
• Troubleshooting Guides: <User Check> • Set the drum unit correctly.
  1 Dirt on the GRID terminals of the drum unit and those of the machine Clean the CHG and GRID terminals 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: 6801
• Description: The side thermistor of the fuser unit or internal temperature sensor detected a temperature higher than the specified value.
• Troubleshooting Guides: <User Check>
  • Lower the room temperature.
  • Keep the machine away from heating appliances.
  1 Connection failure of the internal temperature sensor harness Reconnect the internal temperature sensor harness.
  2 Internal temperature sensor failure Replace the main frame L ASSY.
  3 Fuser unit side thermistor failure Replace the fuser unit.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 6901
• Description: An error occurred in the fuser unit when the power switch was turned ON or sleep mode was released.
• Troubleshooting Guides: 1 Connection failure of a fuser unit harness Reconnect the fuser unit harness.
  2 Connection failure of the eject sensor harness Reconnect the eject sensor harness.
  3 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  4 Fuser unit failure 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.
  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.

Solve Konica-Minolta bizhub 5020i Error codes

• Code: 6902
• Description: Rechecking the error after the power switch was turned OFF and then ON again because an error was detected in the fuser unit. (This message is displayed for approximately 15 minutes when the machine is restarted after error code 6901 has occurred.)
• Troubleshooting Guides: 1 Connection failure of a fuser unit harness Reconnect the fuser unit harness.
  2 Connection failure of the eject sensor harness Reconnect the eject sensor harness.
  3 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
  4 Fuser unit failure 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.
  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: Detected discharge that may be attributable to dirty corona wire on the drum unit.
• Troubleshooting Guides: <User Check>
  • Slide the green tab of the drum unit to left and right for two to three times to clean the corona wire.
  • Clean the electrode of the drum unit.
  • Replace the drum unit.
  1 Dirt on the high-voltage power supply PCB terminal Clean the electrodes of the machine.
  2 High-voltage power supply PCB attachment failure Check if each electrode comes back smoothly after pressing it. If not, reattach each electrode.
  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: 6D00
• Description: Detected more LTs than connectible limit.
• Troubleshooting Guides: <User Check>
  • Reduce LTs to acceptable numbers.
  • Reconnect LTs.
  1 Dust around the LT connector Clean the LT connector.
  2 Malfunction of the LT control PCB Install the latest main firmware.
  3 Machine or LT connector failure Replace the machine or LT connector.
  4 LT control PCB failure Replace a LT control PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 6F00
• Description: Detected irregular power supply for less than 100 times.
• Troubleshooting Guides: <User Check>
  • Turn the power switch OFF and then back ON again.
  • Use a noise filter on the power supply.
  • Install a voltage stabilizer to the power supply unit.
  1 Foreign object inside the machine Remove the foreign object.
  2 Connection failure of the eject sensor harness Reconnect the eject sensor harness.
  3 Eject actuator coming off or caught in some sections of the machine Reattach the eject actuator.
  4 Fuser cover attachment failure Reattach the fuser cover.
  5 Eject sensor failure Replace the eject sensor PCB ASSY.
  6 high-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  7 Fuser unit failure Replace the fuser unit.
  8 Damaged fuser gears or drum gears Replace the main frame L ASSY.
  9 Main PCB failure Replace the main PCB ASSY.

• Code: 7000
• Description: The eject sensor does not detect paper pass after the registration rear sensor detected the paper pass.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Replace the drum unit with a new one.
  1 Foreign object inside the machine Remove the foreign object.
  2 Connection failure of the eject sensor harness Reconnect the eject sensor harness.
  3 Eject actuator coming off or caught in some sections of the machine Reattach the eject actuator.
  4 Fuser cover attachment failure Reattach the fuser cover.
  5 Eject sensor failure Replace the eject sensor PCB ASSY.
  6 high-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  7 Fuser unit failure Replace the fuser unit.
  8 Damaged fuser gears or drum gears Replace the main frame L ASSY.
  9 Main PCB failure Replace the main PCB ASSY.

• Code: 7100
• Description: The eject sensor remains ON (paper pass detected) even after the registration rear sensor detected the end of paper pass.
• Troubleshooting Guides: <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 Eject sensor failure Replace the eject sensor PCB ASSY.
  5 high-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  6 Fuser cover failure Replace the fuser cover.
  7 Damaged eject roller 1 drive gears Replace the main frame L ASSY.
  8 Main PCB failure Replace the main PCB ASSY.

• Code: 7200
• Description: When feeding from the MP tray, the registration rear sensor does not detect paper pass within the specified time after the registration front sensor detected paper pass.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the MP tray paper guide.
  • Close the front cover correctly.
  1 Foreign object in the front 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 harness Reconnect the registration front/rear sensor harness.
  4 Connection failure of the registration clutch harness Reconnect the registration clutch harness.
  5 MP feed frame attachment failure Reattach the MP feed frame.
  6 Registration rear sensor failure Replace the registration front/rear sensor PCB ASSY.
  7 Registration clutch failure Replace the registration clutch.
  8 high-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  9 Damaged gears in the paper feeding system Replace the main frame L ASSY.
  10 Main PCB failure Replace the main PCB ASSY.

• Code: 7301
• Description: When printing from the paper tray 1, the T1 paper feed sensor does not detect paper pass within the specified time while the T1 paper empty sensor detects some paper set.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the paper tray 1 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 Reattach the T1 pickup clutch harness.
  5 Connection failure of the T1 paper feed sensor harness Reconnect the T1 paper feed sensor harness.
  6 Connection failure of the HVPS flat cable Reconnect the HVPS flat cable.
  7 PF kit 1 failure Replace the PF kit 1.
  8 T1 pickup clutch failure Replace the T1 pickup clutch.
  9 T1 paper feed sensor PCB failure Replace the T1 paper feed sensor PCB ASSY.
  10 T1 paper empty sensor PCB failure Replace the T1 paper empty sensor PCB ASSY.
  11 Damaged gears in the paper feeding system Replace the main frame L ASSY.
  12 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  13 Main PCB failure Replace the main PCB ASSY.

• Code: 7302
• Description: When printing from the paper tray 1, the registration front sensor does not detect paper pass within the specified time after the T1 paper feed sensor detected paper pass.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the paper tray 1 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 high-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  6 Damaged gears in the paper feeding system Replace the main frame L ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 7401
• Description: When printing from the paper tray 2, the T2 paper feed sensor does not detect paper pass within the specified time while the T2 paper empty sensor detects some paper set.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the paper tray 2 paper guide.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 Malfunction of the LT control PCB Install the latest main firmware.
  3 T2 paper pick up roller holder attachment failure Reattach the T2 paper pick up roller holder.
  4 T2 paper feed actuator attachment failure Reattach the T2 paper feed actuator.
  5 Connection failure of the T2 pickup clutch harness Reconnect the T2 pickup clutch harness.
  6 Connection failure of the T2 paper feed sensor harness Reconnect the T2 paper feed sensor harness.
  7 PF kit 2 failure Replace the PF kit 2.
  8 T2 pickup clutch failure Replace the T2 pickup clutch.
  9 T2 paper feed sensor PCB failure Replace the T2 paper feed sensor PCB ASSY.
  10 T2 paper empty sensor PCB failure Replace the T2 paper empty sensor PCB ASSY.
  11 T2 control PCB failure Replace the T2 control PCB ASSY. 12 Main PCB failure Replace the main PCB ASSY.

• Code: 7402
• Description: When printing from the paper tray 2, the registration front sensor does not detect paper pass within the specified time after the T2 paper feed sensor detected paper pass.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the paper tray 2 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 Connection failure of the registration front/rear sensor harness Reconnect the registration front/rear sensor harness.
  4 Connection failure of the T2 control PCB harness Reconnect the T2 control PCB harness.
  5 Connection failure of the T2 release clutch harness Reconnect the T2 release clutch harness.
  6 T2 release clutch failure Replace the T2 release clutch.
  7 Registration front/rear sensor PCB failure Replace the registration front/rear sensor PCB ASSY.
  8 T2 control PCB failure Replace the T2 control PCB ASSY.
  9 high-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  10 Damaged gears in the paper feeding system Replace the main frame L ASSY.
  11 Damaged gears in the LT paper feeding system Replace the PF-P23/PF-P24.
  12 Main PCB failure Replace the main PCB ASSY.

• Code: 7501
• Description: When printing from the paper tray 3, the T3 paper feed sensor does not detect paper pass within the specified time while the T3 paper empty sensor detects some paper set.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the paper tray 3 paper guide.
  1 Foreign object in the front of the machine Remove the foreign object.
  2 Malfunction of the LT control PCB Install the latest main firmware.
  3 T3 paper pick up roller holder attachment failure Reattach the T3 paper pick up roller holder.
  4 T3 paper feed actuator attachment failure Reattach the T3 paper feed actuator.
  5 Connection failure of the T3 pickup clutch harness Reconnect the T3 pickup clutch harness.
  6 Connection failure of the T3 paper feed sensor harness Reconnect the T3 paper feed sensor harness.
  7 PF kit 3 failure Replace the PF kit 3.
  8 T3 pickup clutch failure Replace the T3 pickup clutch.
  9 T3 paper feed sensor PCB failure Replace the T3 paper feed sensor PCB ASSY.
  10 T3 paper empty sensor PCB failure Replace the T3 paper empty sensor PCB ASSY.
  11 T3 control PCB failure Replace the T3 control PCB ASSY.
  12 Main PCB failure Replace the main PCB ASSY.

• Code: 7502
• Description: When printing from the paper tray 3, the registration front sensor does not detect paper pass within the specified time after the T3 paper feed sensor detected paper pass.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Add the paper properly using the paper tray 3 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 Connection failure of the registration front/rear sensor harness Reconnect the registration front/rear sensor harness.
  4 Connection failure of the T2/T3 control PCB harness Reconnect the T2/T3 control PCB harness.
  5 Connection failure of the T2/T3 release clutch harness Reconnect the T2/T3 release clutch harness.
  6 T2/T3 release clutch failure Replace the T2/T3 release clutch.
  7 Registration front/rear sensor PCB failure Replace the registration front/rear sensor PCB ASSY.
  8 T2/T3 control PCB failure Replace the T2/T3 control PCB ASSY.
  9 high-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  10 Damaged gears in the paper feeding system Replace the main frame L ASSY.
  11 Damaged gears in an LT paper feeding system Replace the PF-P23/PF-P24.
  12 Main PCB failure Replace the main PCB ASSY.

• Code: 7800
• Description: The registration front sensor does not detect paper pass within the specified time after the first side was printed in duplex printing mode.
• Troubleshooting Guides: <User Check>
  • Remove the jammed paper.
  • Close the back cover correctly.
  • Attach the duplex tray correctly.
  1 Foreign object in the rear of the machine or duplex tray Remove the foreign object.
  2 Connection failure of the eject motor harness Reconnect the eject motor harness.
  3 Duplex tray failure Replace the duplex tray.
  4 Eject motor failure Replace the eject motor.
  5 Damaged gears in the paper feeding system Replace the main frame L ASSY.
  6 Paper eject roller failure Replace the paper eject roller.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 8501
• Description: When printing from paper tray 1 to 3, the T1 paper feed sensor detected open paper tray 1 (before registering printing data to engine).
• Troubleshooting Guides: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 An LT paper feed actuator coming off or caught in some sections of the machine Reattach the appropriate LT paper feed actuator.
  3 An LT paper feed sensor failure Replace the appropriate LT paper feed sensor PCB ASSY.
  4 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  5 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 8502
• Description: When printing from paper tray 2 to 3, the T2 paper feed sensor detected open paper tray 2 (before registering printing data to engine).
• Troubleshooting Guides: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 An LT paper feed actuator coming off or caught in some sections of the machine Reattach the appropriate LT paper feed actuator.
  3 An LT paper feed sensor failure Replace the appropriate LT paper feed sensor PCB ASSY.
  4 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  5 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 8503
• Description: When printing from paper tray 3, the T3 paper feed sensor detected open paper tray 3 (before registering printing data to engine).
• Troubleshooting Guides: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 An LT paper feed actuator coming off or caught in some sections of the machine Reattach the appropriate LT paper feed actuator.
  3 An LT paper feed sensor failure Replace the appropriate LT paper feed sensor PCB ASSY.
  4 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  5 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  6 Main PCB failure Replace the main PCB ASSY.

• Code: 8505
• Description: When printing from paper tray 1 to 3, the T1 paper feed sensor detected open paper tray 1 (after registering printing data to engine).
• Troubleshooting Guides: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 An LT paper feed sensor failure Replace the appropriate LT paper feed sensor PCB ASSY.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 8506
• Description: When printing from paper tray 2 to 3, the T2 paper feed sensor detected open paper tray 2 (after registering printing data to engine).
• Troubleshooting Guides: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 An LT paper feed sensor failure Replace the appropriate LT paper feed sensor PCB ASSY.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 8507
• Description: When printing from paper tray 3, the T3 paper feed sensor detected open paper tray 3 (after registering printing data to engine).
• Troubleshooting Guides: <User Check> • Close the appropriate paper tray correctly.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 An LT paper feed sensor failure Replace the appropriate LT paper feed sensor PCB ASSY.
  3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 8702
• Description: Stack sensor detected the ejected paper full state at the start of printing.
• Troubleshooting Guides: <User Check> • Remove the paper from the output tray.
  1 Stack actuator coming off or caught in some sections of the machine Reattach the stack actuator.
  2 Stack sensor failure Replace the stack sensor.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: 8903
• Description: The back cover/duplex tray sensor detected that the cover was open when duplex printing is started. (Before registering printing data to engine)
• Troubleshooting Guides: <User Check>
  • Close the back cover correctly.
  • Attach the duplex tray correctly.
  1 Back cover/duplex tray sensor attachment failure Reattach the back cover/duplex tray sensor.
  2 Connection failure of the back cover/duplex tray sensor harness Reconnect the back cover/duplex tray sensor harness.
  3 Damaged back cover Replace the back cover.
  4 Damaged duplex tray Replace the duplex tray.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: 8904
• Description: The back cover/duplex tray sensor detected that the cover was open during duplex printing. (After registering printing data to engine)
• Troubleshooting Guides: <User Check>
  • Close the back cover correctly.
  • Attach the duplex tray correctly.
  1 Back cover/duplex tray sensor attachment failure Reattach the back cover/duplex tray sensor.
  2 Connection failure of the back cover/duplex tray sensor harness Reconnect the back cover/duplex tray sensor harness.
  3 Damaged back cover Replace the back cover.
  4 Damaged duplex tray Replace the duplex tray.
  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.
• Troubleshooting Guides: <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 high-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: 8E02
• Description: Detected that the size of the paper set to paper tray was over 10 mm shorter than letter size when receiving fax or printing a list/report.
• Troubleshooting Guides: <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: When printing from the MP tray, the size of paper set in the MP tray does not match the size specified by the driver.
• Troubleshooting Guides: <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: When printing from the paper tray 1, the size of paper set in the paper tray 1 does not match the size specified by the driver.
• Troubleshooting Guides: <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: When printing from the paper tray 2, the size of paper set in the paper tray 2 does not match the size specified by the driver.
• Troubleshooting Guides: <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: When printing from the paper tray 3, the size of paper set in the paper tray 3 does not match the size specified by the driver.
• Troubleshooting Guides: <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.
• Troubleshooting Guides: <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 paper tray 1, paper type setting in the machine does not match the setting in the driver.
• Troubleshooting Guides: <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 paper tray 2, paper type setting in the machine does not match the setting in the driver.
• Troubleshooting Guides: <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 paper tray 3, paper type setting in the machine does not match the setting in the driver.
• Troubleshooting Guides: <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 printing from the MP tray, the MP paper empty sensor detected that there was no paper set in the MP tray.
• Troubleshooting Guides: <User Check> • Set paper in the appropriate paper tray.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 Connection failure of a LT paper empty sensor harness Reconnect the appropriate LT paper empty sensor harness.
  3 An LT paper empty actuator caught in some sections of the machine Reattach the appropriate LT paper empty actuator.
  4 An LT paper empty sensor PCB failure Replace the appropriate LT paper empty sensor PCB ASSY.
  5 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  6 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 9302
• Description: When printing from paper tray 1, the T1 paper empty sensor or the T1 paper feed sensor detected that there was no paper set in paper tray 1.
• Troubleshooting Guides: <User Check> • Set paper in the appropriate paper tray.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 Connection failure of a LT paper empty sensor harness Reconnect the appropriate LT paper empty sensor harness.
  3 An LT paper empty actuator caught in some sections of the machine Reattach the appropriate LT paper empty actuator.
  4 An LT paper empty sensor PCB failure Replace the appropriate LT paper empty sensor PCB ASSY.
  5 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  6 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 9303
• Description: When printing from paper tray 2, the T2 paper empty sensor detected that there was no paper set in paper tray 2.
• Troubleshooting Guides: <User Check> • Set paper in the appropriate paper tray.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 Connection failure of a LT paper empty sensor harness Reconnect the appropriate LT paper empty sensor harness.
  3 An LT paper empty actuator caught in some sections of the machine Reattach the appropriate LT paper empty actuator.
  4 An LT paper empty sensor PCB failure Replace the appropriate LT paper empty sensor PCB ASSY.
  5 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  6 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: 9304
• Description: When printing from paper tray 3, the T3 paper empty sensor detected that there was no paper set in paper tray 3.
• Troubleshooting Guides: <User Check> • Set paper in the appropriate paper tray.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 Connection failure of a LT paper empty sensor harness Reconnect the appropriate LT paper empty sensor harness.
  3 An LT paper empty actuator caught in some sections of the machine Reattach the appropriate LT paper empty actuator.
  4 An LT paper empty sensor PCB failure Replace the appropriate LT paper empty sensor PCB ASSY.
  5 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  6 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  7 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.
• Troubleshooting Guides: <User Check> • Set paper in the paper tray.
  1 Malfunction of an LT control PCB Install the latest main firmware.
  2 Connection failure of an LT paper empty sensor harness Reconnect the appropriate LT paper empty sensor harness.
  3 Connection failure of the T1 paper feed sensor harness Reconnect the T1 paper feed sensor harness. (bizhub 4020i only)
  4 An LT paper empty actuator caught in some sections of the machine Reattach the appropriate LT paper empty actuator.
  5 T1 paper feed actuator caught in some sections of the machine Reattach the T1 paper feed actuator. (bizhub 4020i only)
  6 Abrasion of a PF kit Replace the appropriate PF kit.
  7 An LT paper empty sensor PCB failure Replace the appropriate LT paper empty sensor PCB ASSY.
  8 T1 paper feed sensor PCB failure Replace the T1 paper feed sensor PCB ASSY. (bizhub 4020i only)
  9 T1, T2, or T3 pickup clutch failure Replace the T1, T2, or T3 pickup clutch.
  10 Paper feed motor failure Replace the paper feed motor. (bizhub 4020i only)
  11 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
  12 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
  13 Damaged gears in the paper feeding system Replace the main frame L ASSY. (bizhub 4020i only)
  14 Main PCB failure Replace the main PCB ASSY.

• Code: 930A
• Description: Paper ran out during Fax / List continuous printing.
• Troubleshooting Guides: <User Check>
  • Set paper in the appropriate paper tray.
  • Install the latest main firmware.
  1 A paper empty actuator caught in some sections of the machine *1 Reattach the appropriate paper empty actuator. *1
  2 A paper feed actuator caught in some sections of the machine *2 Reattach the appropriate paper feed actuator. *2
  3 Connection failure of a paper feed sensor harness *2 Reconnect the appropriate paper feed sensor harness. *2
  4 Connection failure of the HVPS flat cable *2 Reconnect the HVPS flat cable. *2
  5 Connection failure of the LT control PCB harness *2 Reconnect the LT control PCB harness. *2
  6 A paper empty sensor PCB failure *1 Replace the appropriate paper empty sensor PCB ASSY. *1
  7 A paper feed sensor PCB failure *2 Replace the appropriate paper feed sensor PCB ASSY. *2
  8 LT control PCB failure Replace the LT control PCB.
  9 High-voltage power supply PCB failure *2 Replace the high-voltage power supply PCB. *2
  10 Low-voltage power supply PCB failure *2 Replace the Low-voltage power supply PCB ASSY. *2
  11 Main PCB failure Replace the main PCB ASSY.
  Note:
  Only for when each tray above is set for A4 / Letter / Legal / Folio.
  *1 bizhub 5020i only
  *2 bizhub 4020i only

• Code: 9400
• Description: Firmware version of the main PCB is older than that of the LT.
• Troubleshooting Guides: <User Check> • Install the latest main firmware.
  1 Main firmware version and firmware version of the LT do not match Install the latest main firmware.

• Code: 9701
• Description: A tray set to duplex printing-incompatible size was specified in duplex printing.
• Troubleshooting Guides: <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: When printing from paper tray 1, a paper size not supported for paper tray 1 was specified from the driver.
• Troubleshooting Guides: <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: When printing from paper tray 2, a paper size not supported for paper tray 2 was specified from the driver.
• Troubleshooting Guides: <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: When printing from paper tray 3, a paper size not supported for paper tray 3 was specified from the driver.
• Troubleshooting Guides: <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: 9B03
• Description: Only T2 tray is set for A4 / Letter / Legal / Folio but T2 is set as ‘Skip Tray’.
• Troubleshooting Guides: <User Check>
  • Check the paper or Skip Tray setting.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: 9B04
• Description: Only T3 tray is set for A4 / Letter / Legal / Folio but T3 is set as ‘Skip Tray’.
• Troubleshooting Guides: <User Check>
  • Check the paper or Skip Tray setting.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: A000
• Description: bizhub 5020i only
  Image processing was not completed correctly because the number of pixels required for image processing is insufficient in the scanned second side data.
• Troubleshooting Guides: 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.
• Troubleshooting Guides: <User Check>
  • Set the specified size paper.
  • 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.
• Troubleshooting Guides: <User Check>
  • Set A4 or Letter size paper.
  • Remove the jammed document.
  1 Document scanning position actuator caught in some sections of the machine Reattach the document scanning position actuator.
  2 Connection failure of the document scanning position sensor harness Reconnect the document scanning position sensor harness.
  3 Document scanning position sensor failure Replace the ADF unit.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: A400
• Description: The ADF cover sensor detected that the ADF cover was open.
• Troubleshooting Guides: <User Check> • Close the ADF cover correctly.
  1 A part to push the ADF cover sensor in the ADF cover is broken. Replace the ADF cover ASSY.
  2 ADF cover sensor failure Replace the ADF unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: A500
• Description: When scanning the fax, white or black correction data for the first side CIS unit was not within the correct range (first time).
• Troubleshooting Guides: 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 (bizhub 5020i only) Clean the white tape on the second side document hold. (bizhub 5020i only)
  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: 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).
• Troubleshooting Guides: 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 (bizhub 5020i only) Clean the white tape on the second side document hold. (bizhub 5020i only)
  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: A700
• Description: Color parameter in the ROM does not match the first side or second side CIS.
• Troubleshooting Guides: 1 Incorrect correction data for first side or second side CIS unit Execute ‘Acquire white level data (function code: 55)’.
  2 Damaged first side CIS flat cable Replace the first side CIS flat cable.
  3 Damaged second side CIS flat cable (bizhub 5020i only) Replace the second side CIS flat cable. (bizhub 5020i only)
  4 First side CIS unit failure Replace the first side CIS unit.
  5 Second side CIS unit failure (bizhub 5020i only) Replace the second side CIS unit. (bizhub 5020i only)
  6 Main PCB failure Replace the main PCB ASSY.

• Code: A900
• Description: A scanning error occurred while processing the scanned image.
• Troubleshooting Guides: 1 Incorrect correction data for first side or second side CIS unit Execute ‘Acquire white level data (function code: 55)’.
  2 Damaged first side CIS flat cable Replace the first side CIS flat cable.
  3 Damaged second side CIS flat cable (bizhub 5020i only) Replace the second side CIS flat cable. (bizhub 5020i only)
  4 First side CIS unit failure Replace the first side CIS unit.
  5 Second side CIS unit failure (bizhub 5020i only) Replace the second side CIS unit. (bizhub 5020i only)
  6 Main PCB failure Replace the main PCB ASSY.

• Code: AC00
• Description: bizhub 5020i only
  When scanning the fax, white or black correction data for the second side CIS was not within the correct range (first time).
• Troubleshooting Guides: 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 Second side CIS unit failure Replace the second side CIS unit.
  4 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.
• Troubleshooting Guides: 1 Incorrect correction data for first side CIS unit Execute ‘Acquire white level data (function code: 55)’.
  2 First side CIS unit failure Replace the first side CIS unit.
  3 White tape failure Replace the document scanner unit.
  4 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.
• Troubleshooting Guides: 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 First side CIS unit failure Replace the first side CIS unit.
  4 FB motor failure Replace the document scanner unit.
  5 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.
• Troubleshooting Guides: 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 CIS carriage coming off Reattach the CIS carriage.
  4 Connection failure of the FB motor harness Reconnect the FB motor harness.
  5 First side CIS unit failure Replace the first side CIS unit.
  6 FB motor failure Replace the document scanner unit.
  7 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.
• Troubleshooting Guides: 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 (bizhub 5020i only) Reconnect the second side CIS flat cable. (bizhub 5020i only)
  3 First side CIS unit failure Replace the first side CIS unit.
  4 Second side CIS unit failure (bizhub 5020i only) Replace the second side CIS unit. (bizhub 5020i only)
  5 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.
• Troubleshooting Guides: 1 Dirt on the second side document hold (bizhub 5020i only) Clean the second side document hold. (bizhub 5020i only)
  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 (bizhub 5020i only) Replace the second side CIS unit. (bizhub 5020i only)
  5 Second side document hold failure (bizhub 5020i only) Replace the ADF unit. (bizhub 5020i only)
  6 White tape failure Replace the document scanner unit.
  7 Main PCB failure Replace the main PCB ASSY.

• Code: BC00
• Description: bizhub 5020i only
  When scanning the fax, white or black correction data for the second side CIS was not within the correct range (second time).
• Troubleshooting Guides: 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 Second side CIS unit failure Replace the second side CIS unit.
  4 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.
• Troubleshooting Guides: 1 Dirt on the second side document hold (bizhub 5020i only) Clean the second side document hold. (bizhub 5020i only)
  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 (bizhub 5020i only) Replace the second side CIS unit. (bizhub 5020i only)
  5 Second side document hold failure (bizhub 5020i only) Replace the ADF unit. (bizhub 5020i only)
  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).
• Troubleshooting Guides: <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 ADF unit.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C001
• Description: Access request to the server timed out because the server address was wrong, network was not connected, or server was not working.
• Troubleshooting Guides: <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 ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C002
• Description: User authentication error due to wrong user name, wrong password, or date and time was not synchronized between the machine and server.
• Troubleshooting Guides: <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 ASSY.
  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.
• Troubleshooting Guides: <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 ASSY.
  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.
• Troubleshooting Guides: <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 ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: C100
• Description: Failed to save data to a USB flash memory.
• Troubleshooting Guides: <User Check>
  • Change the USB flash memory.
  • Check if there is sufficient memory in the USB flash memory.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: C700
• Description: There is insufficient memory to expand PC print data.
• Troubleshooting Guides: <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 size allotted for Secure Print was exceeded when saving Secure Print data.
• Troubleshooting Guides: <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.
• Troubleshooting Guides: 1 Connection failure of the modem flat cable Reconnect the modem flat cable.
  2 Modem PCB failure Replace the modem PCB ASSY.
  3 Main PCB failure Replace the main PCB ASSY.

• Code: D200
• Description: Detected that the modem PCB is not connected.
• Troubleshooting Guides: 1 Modem PCB failure Replace the modem PCB ASSY.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: D800
• Description: An error occurred while initializing the touch panel.
• Troubleshooting Guides: 1 Panel firmware version and main firmware version do not match Install the latest main firmware.
  2 Connection failure of the panel flat cable Reconnect the panel flat cable.
  3 LCD relay PCB failure Replace the LCD panel ASSY.
  4 Main PCB failure Replace the main PCB ASSY.

• Code: E000
• Description: An error occurred in the ROM check sum.
• Troubleshooting Guides: 1 Malfunction of the main firmware Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: E100
• Description: Program error
• Troubleshooting Guides: 1 Malfunction of the main firmware Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: E500
• Description: An error occurred during access to the DRAM in the main PCB ASSY.
• Troubleshooting Guides: 1 Malfunction of the main firmware Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: E600
• Description: Write error in the EEPROM of the main PCB ASSY
• Troubleshooting Guides: 1 Malfunction of the main firmware Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: E701
• Description: System error in the flash ROM
• Troubleshooting Guides: 1 Malfunction of the main firmware Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: E702
• Description: Read error in the flash ROM
• Troubleshooting Guides: 1 Malfunction of the main firmware Install the latest main firmware.
  2 Main PCB failure Replace the main PCB ASSY.

• Code: E900
• Description: bizhub 5020i only
  An error occurred while initializing the NFC.
• Troubleshooting Guides: 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 Panel PCB failure Replace the panel PCB ASSY.
  4 NFC PCB failure Replace the NFC PCB ASSY.
  5 Main PCB failure Replace the main PCB ASSY.

• Code: EC00
• Description: A USB device not within the specification is connected to the USB terminal, resulting in over current.
• Troubleshooting Guides: <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: ED00
• Description: Failed to authenticate the firmware for the self test.
• Troubleshooting Guides: <User Check>
  • Turn the power switch OFF and then ON again.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: EE00
• Description: Failed to authenticate the NVRAM for the self test.
• Troubleshooting Guides: <User Check>
  • Turn the power switch OFF and then ON again.
  1 Main PCB failure Replace the main PCB ASSY.

• Code: F900
• Description: The spec code was not entered correctly.
• Troubleshooting Guides: 1 The power was turned OFF while function code 74 was running. Reenter the spec code.
  2 Main PCB failure Replace the main PCB ASSY.

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