Fixing Kyocera FSC8026DN Printer Error Codes in details

Fixing Kyocera FSC8026DN Printer Error Codes in details

– Printer model: Kyocera FSC8026DN
– Fix Error codes on Kyocera FSC8026DN model and its description:

• Code: 0121
• Description: EEPROM read error (drum PWB K)
  • When data is transmitted to the EEPROM on drum PWB K, the ACK signal is not returned within 1 s.
• Causes: Poor contact in the connector terminals.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC9 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective drum PWB K. Replace the black process unit.

• Code: 0122
• Description: EEPROM read error (drum PWB C)
  • When data is transmitted to the EEPROM on drum PWB C, the ACK signal is not returned within 1 s.
• Causes: Poor contact in the connector terminals.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC10 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective drum PWB C. Replace the cyan process unit.

• Code: 0123
• Description: EEPROM read error (drum PWB M)
  • When data is transmitted to the EEPROM on drum PWB M, the ACK signal is not returned within 1 s.
• Causes: Poor contact in the connector terminals. Defective drum PWB M.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC11 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective drum PWB M. Replace the magenta process unit.

• Code: 0124
• Description: EEPROM read error (drum PWB Y)
  • When data is transmitted to the EEPROM on drum PWB Y, the ACK signal is not returned within 1 s.
• Causes: Poor contact in the connector terminals.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC12 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective drum PWB Y. Replace the black process unit.

• Code: 0150
• Description: Backup memory device problem (Engine controller PWB)
  • An error occurs in backup data read or write for the engine controller PWB. • An error occurs in control area deletion.
• Causes: Defective engine controller PWB.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.

• Code: 0160
• Description: Backup memory data problem (Engine controller PWB)
  • Data for backup data check is changed at the check after startup.
• Causes: Defective engine controller PWB.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.

• Code: 0170
• Description: Total counts problem
  • A checksum error is detected in the main and sub backup memories for the total counters.
• Causes: Data damage of EEPROM.
• Remedy: Data damage of EEPROM. Contact the Service Administrative Division.

• Code: 0240
• Description: Main controller PWB communication problem
  • The main controller PWB does not respond 120 seconds after the power is turned on.
• Causes: Poor contact in the connector terminals. DIMM installed incorrectly. Defective engine interface PWB or main controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC6 on the engine interface PWB and the connector on the main controller PWB. Repair or replace if necessary.
  DIMM installed incorrectly. Check the connection. Repair or replace if necessary.
  Defective engine interface PWB or main controller PWB. Replace the engine interface PWB or main controller and check for correct operation.

• Code: 0310
• Description: LPH drive PWB communication error
  • When an error in communication with the CPU for LPH control on the LPH drive PWB is detected, transmission/ reception is not normally completed even after 10 times of retry.
• Causes: Poor contact in the connector terminals. Defective LPH drive PWB. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC31 on the engine controller PWB and the connector YC2 on the LPH drive PWB. Repair or replace if necessary.
  Defective LPH drive PWB. Replace the LPH drive PWB.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 0420
• Description: Paper feeder communication error 1 (upper of optional paper feeder PF- 640)
  • Reception is not normally completed even after 40 times of retry at startup or 5 times of retry in normal operation.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective upper of optional paper feeder PF-640.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective upper of optional paper feeder PF-640. Replace the paper feeder with another unit and check the operation. If the operation is normal, replace or repair the upper of the optional paper feeder PF-640.

• Code: 0440
• Description: Document finisher communication problem (optional document finisher)
  • Reception is not normally completed even after 40 times of retry at startup or 5 times of retry in normal operation.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective optional document finisher
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC26 on the engine controller PWB. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective optional document finisher. Replace the document finisher with another unit and check the operation. If the operation is normal, replace or repair the optional document finisher.

• Code: 0500
• Description: Paper feeder communication error 1 (lower of optional paper feeder PF- 640)
  • Reception is not normally completed even after 40 times of retry at startup or 5 times of retry in normal operation.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective lower of optional paper feeder PF-640.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective lower of optional paper feeder PF-640. Replace the paper feeder PF-640 with another unit and check the operation. If the operation is normal, replace or repair the lower of the optional paper feeder PF-640.

• Code: 0700
• Description: Paper feeder EEPROM error 1 (upper of optional paper feeder PF-640)
  • When power is turned on, an error is detected in memory check for the upper of the optional 500 sheets paper feeder and a backup memory error is received in serial communication data
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective upper of optional paper feeder PF-640.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective upper of optional paper feeder PF-640. Replace the paper feeder PF-640 with another unit and check the operation. If the operation is normal, replace or repair the upper of the optional paper feeder PF-640.

• Code: 0710
• Description: Paper feeder EEPROM error 2 (lower of optional paper feeder PF-640)
  • When power is turned on, an error is detected in memory check for the lower of the paper feeder PF-640 and a backup memory error is received in serial communication data.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective lower of optional paper feeder PF-640.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective lower of optional paper feeder PF-640. Replace the paper feeder PF-640 with another unit and check the operation. If the operation is normal, replace or repair the lower of the optional paper feeder PF-640.

• Code: 0750
• Description: Document finisher EEPROM error
  • A backup memory error is received in serial communication data from the finisher.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective optional document finisher.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective optional document finisher. Replace the document finisher with another unit and check the operation. If the operation is normal, replace or repair the document finisher.

• Code: 0926
• Description: LPH current correction EEPROM error
  • A correction data error for the second color (cyan) is detected..
• Causes: Defective EEPROM of LPH drive PWB.
• Remedy: Defective EEPROM of LPH drive PWB. Rewrite correction data.

• Code: 0951
• Description: LPH current correction EEPROM error
  • A correction data error for the fourth color (black) is detected.
• Causes: Defective EEPROM of LPH drive PWB.
• Remedy: Defective EEPROM of LPH drive PWB. Rewrite correction data.

• Code: 0953
• Description: LPH current correction EEPROM error
  • A correction data error for the first color (magenta) is detected.
• Causes: Defective EEPROM of LPH drive PWB.
• Remedy: Defective EEPROM of LPH drive PWB. Rewrite correction data.

• Code: 0954
• Description: LPH current correction EEPROM error
  • A correction data error for the third color (yellow) is detected.
• Causes: Defective EEPROM of LPH drive PWB.
• Remedy: Defective EEPROM of LPH drive PWB. Rewrite correction data.

• Code: 1010
• Description: Cassette lift motor error
  • The bottom plate limit detection sensor is not turned on within 9,000 ms after the cassette is inserted and the sensor is not turned on within 500 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective cassette lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective cassette lift motor. Replace the cassette lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 1100
• Description: Cassette lift motor error (upper cassette of optional paper feeder PF-645)
  • The paper feeder upper limit detection sensor is not turned on within 10,000 ms after the upper cassette is inserted and the sensor is not turned on within 500 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective upper cassette lift motor. Defective engine controller PWB. Defective bottom plate elevation mechanism. Defective middle cassette lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective upper cassette lift motor. Replace the upper cassette lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 1110
• Description: Cassette lift motor error (middle cassette of optional paper feeder PF-645)
  • The paper feeder middle limit detection sensor is not turned on within 10,000 ms after the middle cassette is inserted and the sensor is not turned on within 500 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective middle cassette lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective middle cassette lift motor. Replace the middle cassette lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 1120
• Description: Cassette lift motor error (lower cassette of optional paper feeder PF-645)
  • The paper feeder lower limit detection sensor is not turned on within 10,000 ms after the lower cassette is inserted and the sensor is not turned on within 500 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective lower cassette lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective lower cassette lift motor. Replace the lower cassette lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 1130
• Description: Cassette lift motor error (cassette of paper feeder PF-647)
  • The paper feeder limit detection sensor is not turned on within 10,000 ms after the cassette is inserted and the sensor is not turned on within 500 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective cassette lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective cassette lift motor. Replace the cassette lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

– Kyocera FSC8026DN printer Error Codes and quick guide to troubleshooting:

• Code: 1140
• Description: Deck lift motor error (right deck of paper feeder PF-647)
  • The right deck limit detection sensor is not turned on within 60,000 ms after the right deck is inserted and the sensor is not turned on within 1,000 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective right deck lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective right deck lift motor. Replace the right deck lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 1150
• Description: Deck lift motor error (left deck of paper feeder PF-647)
  • The left deck limit detection sensor is not turned on within 60,000 ms after the left deck is inserted and the sensor is not turned on within 1,000 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective left deck lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective left deck lift motor. Replace the left deck lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 1160
• Description: Cassette lift motor error (upper of paper feeder PF-640)
  • The paper feeder limit detection sensor is not turned on within 10,000 ms after the cassette is inserted and the sensor is not turned on within 500 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective cassette lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective cassette lift motor. Replace the cassette lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 1170
• Description: Cassette lift motor error (lower of paper feeder PF-640)
  • The paper feeder limit detection sensor is not turned on within 10,000 ms after the cassette is inserted and the sensor is not turned on within 500 ms at the second time and after.
• Causes: Defective bottom plate elevation mechanism. Defective cassette lift motor. Defective engine controller PWB.
• Remedy: Defective bottom plate elevation mechanism. Check to see if the bottom plate can move smoothly and repair it if any problem is found.
  Defective cassette lift motor. Replace the cassette lift motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 1200
• Description: Duplex side registration motor error (optional duplex unit*)
  • The duplex side registration home position sensor does not detect the home position of the side registration guide. *Duplex unit is standard equipment for 120 V (U.S.A.) specifications.
• Causes: Defective duplex side registration home position sensor. Defective duplex side registration motor. Defective engine controller PWB.
• Remedy: Defective duplex side registration home position sensor. Check the connection of connector YC29 on the engine controller PWB. Repair or replace if necessary.
  Defective duplex side registration motor. Replace the duplex side registration motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2101
• Description: Developing K/fuser motor error
  • After the motor drive ON signal is output and 1 s elapses, the rated speed reach signal is not input continuously for 2 s.
• Causes: Poor contact in the connector terminals. Defective developing K/fuser motor. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB. Repair or replace if necessary.
  Defective developing K/fuser motor. Replace the developing K/fuser motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2102
• Description: Developing MCY motor error
  • After the motor drive ON signal is output and 1 s elapses, the rated speed reach signal is not input continuously for 2 s.
• Causes: Poor contact in the connector terminals. Defective developing MCY motor. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC6 on the engine controller PWB. Repair or replace if necessary.
  Defective developing MCY motor. Replace the developing MCY motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2201
• Description: Drum motor K error
  • After the motor drive ON signal is output and 3 s elapses, the rated speed reach signal is not input continuously for 2 s.
• Causes: Poor contact in the connector terminals. Defective drum motor K. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC5 on the engine controller PWB. Repair or replace if necessary.
  Defective drum motor K. Replace the drum motor K.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2202
• Description: Drum motor C error
  • After the motor drive ON signal is output and 3 s elapses, the rated speed reach signal is not input continuously for 2 s.
• Causes: Poor contact in the connector terminals. Defective drum motor C. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC5 on the engine controller PWB. Repair or replace if necessary.
  Defective drum motor C. Replace the drum motor C.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2203
• Description: Drum motor M error
  • After the motor drive ON signal is output and 3 s elapses, the rated speed reach signal is not input continuously for 2 s.
• Causes: Poor contact in the connector terminals. Defective drum motor M. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC5 on the engine controller PWB. Repair or replace if necessary.
  Defective drum motor M. Replace the drum motor M.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2204
• Description: Drum motor Y error
  • After the motor drive ON signal is output and 3 s elapses, the rated speed reach signal is not input continuously for 2 s.
• Causes: Poor contact in the connector terminals. Defective drum motor Y. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC5 on the engine controller PWB. Repair or replace if necessary.
  Defective drum motor Y. Replace the drum motor Y.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2500
• Description: Paper feed motor error
  • After the motor drive ON signal is output and 1 s elapses, the rated speed reach signal is not input continuously for 2 s.
• Causes: Poor contact in the connector terminals. Defective paper feed motor. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC23 on the engine controller PWB and YC1 on the clutch PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective paper feed motor. Replace the paper feed motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2600
• Description: Paper feed motor error (optional paper feeder PF-645/647)
  • After the motor drive ON signal is output and 2 s elapse, paper feed motor error communication data is transmitted continuously for 1 s.
• Causes: Poor contact in the connector terminals. Defective paper feed motor. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB. Repair or replace if necessary.
  Defective paper feed motor. Replace the paper feed motor.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 2700
• Description: Transfer lift motor error
  • Even if 5,000 ms elapse after the transfer lift motor drive signal is turned on, the transfer lift home position sensor is not turned on. • Even if 5,000 ms elapse after the transfer lift motor drive ON signal is output, the transfer lift home position sensor is not turned off.
• Causes: Poor contact in the connector terminals. Defective transfer lift home position sensor. Defective transfer lift motor. Misfeed in the conveying section or fuser section.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC4 on the engine controller PWB or connectors YC1 and YC2 on the transfer relay PWB for any problem, and repair them if any problem is found.
  Defective transfer lift home position sensor. Replace the transfer roller lift home position sensor.
  Defective transfer lift motor. Replace the transfer roller lift motor.
  Misfeed in the conveying section or fuser section. Remove the jammed paper completely.

• Code: 2710
• Description: Waste toner box motor error
  • After the motor drive remote signal is turned on, the overcurrent detection signal is detected continuously for more than 200 ms.
• Causes: Overload on the waste toner box motor. Defective waster toner box motor.
• Remedy: Overload on the waste toner box motor. Check to see if the waste toner in the waste toner box is solidified. If any problem is found, replace the waste toner box.
  Defective waster toner box motor. Replace the waster toner box motor.

• Code: 5100
• Description: Main high-voltage error
  • While the main high-voltage output remote signal is on, an alarm signal is detected continuously for 400 ms.
• Causes: Leak of main highvoltage.
• Remedy: Leak of main highvoltage. Check the main charger unit and replace if necessary.

• Code: 5301
• Description: Eraser lamp K break error
  • After the eraser lamp K ON signal is turned on, the eraser lamp K break signal is detected continuously for 200 ms.
• Causes: Poor contact in the connector terminals. Defective eraser lamp K.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC9 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective eraser lamp K. Replace the black process unit.

• Code: 5302
• Description: Eraser lamp C break error
  • After the eraser lamp C ON signal is turned on, the eraser lamp C break signal is detected continuously for 200 ms.
• Causes: Poor contact in the connector terminals. Defective eraser lamp C.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC10 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective eraser lamp C. Replace the cyan process unit.

• Code: 5303
• Description: Eraser lamp M break error
  • After the eraser lamp C ON signal is turned on, the eraser lamp M break signal is detected continuously for 200 ms.
• Causes: Poor contact in the connector terminals. Defective eraser lamp M.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC11 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective eraser lamp M. Replace the magenta process unit.

• Code: 5304
• Description: Eraser lamp Y break error
  • After the eraser lamp Y ON signal is turned on, the eraser lamp Y break signal is detected continuously for 200 ms.
• Causes: Poor contact in the connector terminals. Defective eraser lamp Y.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC12 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective eraser lamp Y. Replace the yellow process unit.

• Code: 6000
• Description: Upper fuser heater lamp break
  • The time for increasing the temperature at the upper fuser heater lamp to 60°C during warm-up exceeds 100 s from the start of warm-up. Then, the time for increasing the temperature from 60 °C/140 °F to 120 °C/248 °F exceeds 100 s.
• Causes: Installation defectiveness on upper fuser thermistor. Defective upper fuser thermostat. Defective engine controller PWB. Defective power supply PWB. Defective fuser PWB. Connected malfunction of electric wire on upper fuser thermistor or connected malfunction of connector terminal. Defective upper fuser heater lamp.
• Remedy: Installation defectiveness on upper fuser thermistor. Check the mounting state of the upper fuser thermistor. If any problem is found, repair it.
  Defective upper fuser thermostat. Replace the upper fuser thermostat.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective power supply PWB. Replace the power supply PWB.
  Defective fuser PWB. Replace the fuser PWB.
  Connected malfunction of electric wire on upper fuser thermistor or connected malfunction of connector terminal. Check the cable of the upper fuser thermistor and the connection of the fuser PWB for any problem. If any problem is found, repair it.
  Defective upper fuser heater lamp. Replace the upper fuser heater lamp.

• Code: 6020
• Description: Upper fuser thermistor high-temperature detection error
  • The temperature at the upper fuser roller 205 °C/401 °F or more is detected continuously for 5 s.
• Causes: Defective engine controller PWB. Defective fuser PWB. Defective power supply PWB. Installation defectiveness on upper fuser thermistor. Defective upper fuser thermistor.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.
  Defective fuser PWB. Replace the fuser PWB.
  Defective power supply PWB. Replace the power supply PWB.
  Installation defectiveness on upper fuser thermistor. Check the mounting state of the upper fuser thermistor. If any problem is found, repair it.
  Defective upper fuser thermistor. Replace the upper fuser thermistor.

• Code: 6030
• Description: Upper fuser thermistor break error
  • After the fuser heater lamp is turned on, the temperature at the upper fuser roller lower than 40 °C/104 °F continues for 30 s.
• Causes: Defective engine controller PWB. Defective harness between fuser PWB and upper fuser thermistor, or poor contact of the connector terminals. Defective harness between fuser PWB and fuser unit connectors. Defective harness between power supply PWB and fuser unit connectors. Defective fuser PWB. Defective power supply PWB. Installation defectiveness on upper fuser thermistor.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.
  Defective harness between fuser PWB and upper fuser thermistor, or poor contact of the connector terminals. Check the insertion of connectors of the fuser PWB. Repair if necessary.
  Defective harness between fuser PWB and fuser unit connectors. Check the continuity of the harness and the insertion of connectors of the fuser PWB. Repair if necessary.
  Defective harness between power supply PWB and fuser unit connectors. Check the continuity of the harness and the connection of connector YC902 on the power supply PWB. Repair if necessary.
  Defective fuser PWB. Replace the fuser PWB.
  Defective power supply PWB. Replace the power supply PWB.
  Installation defectiveness on upper fuser thermistor. Check the mounting state of the upper fuser thermistor. If any problem is found, repair it.

• Code: 6050
• Description: Upper fuser thermistor abnormal temperature detection
  • During copying, the temperature at the upper fuser roller lower than 120 °C/ 248 °F is detected continuously for 5 s.
• Causes: Installation defectiveness on upper fuser thermistor. Operation on upper fuser thermostat. Defective engine controller PWB. Defective power supply PWB. Defective fuser PWB. Defective harness between fuser PWB and upper fuser thermistor, or poor contact of the connector terminals. Defective upper fuser heater lamp. Defective harness between fuser unit connectors and upper fuser heater lamp. Defective harness between fuser unit connectors and power supply PWB.
• Remedy: Installation defectiveness on upper fuser thermistor. Check the mounting state of the upper fuser thermistor. If any problem is found, repair it.
  Operation on upper fuser thermostat. Replace the upper fuser thermostat.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective power supply PWB. Replace the power supply PWB.
  Defective fuser PWB. Replace the fuser PWB.
  Defective harness between fuser PWB and upper fuser thermistor, or poor contact of the connector terminals. Check the insertion of connectors of the fuser PWB. Repair if necessary.
  Defective upper fuser heater lamp. Replace the upper fuser heater lamp.
  Defective harness between fuser unit connectors and upper fuser heater lamp. Check the continuity of the harness and the insertion of connectors of the fuser PWB. Repair if necessary.
  Defective harness between fuser unit connectors and power supply PWB. Check the continuity of the harness and the insertion of connectors of the power supply PWB. Repair if necessary

• Code: 6100
• Description: Lower fuser heater lamp break
  • The time for increasing the temperature at the upper fuser heater lamp to 60 °C/140 °F during warm-up exceeds 100 s from the start of warm-up. Then, the time for increasing the temperature from 60 °C/140 °F to 120 °C/218 °F exceeds 100 s.
• Causes: Installation defectiveness on lower fuser thermistor. Operation on lower fuser thermostat. Defective engine controller PWB. Defective power supply PWB. Defective fuser PWB. Defective harness of lower fuser thermistor, or poor contact of the connector terminals. Defective lower fuser heater lamp.
• Remedy: Installation defectiveness on lower fuser thermistor. Check the mounting state of the lower fuser thermistor. If any problem is found, repair it.
  Operation on lower fuser thermostat. Replace the lower fuser thermostat.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective power supply PWB. Replace the power supply PWB.
  Defective fuser PWB. Replace the fuser PWB.
  Defective harness of lower fuser thermistor, or poor contact of the connector terminals. Check the continuity of the harness of the lower fuser thermistor and the insertion of connectors of the fuser PWB. Repair if necessary.
  Defective lower fuser heater lamp. Replace the lower fuser heater lamp.

• Code: 6120
• Description: Lower fuser thermistor detection error
  • The temperature at the lower fuser roller 205 °C/401 °F or more is detected continuously for 5 s.
• Causes: Defective engine controller PWB. Defective fuser PWB. Defective power supply PWB. Installation defectiveness on lower fuser thermistor. Defective lower fuser thermistor.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.
  Defective fuser PWB. Replace the fuser PWB.
  Defective power supply PWB. Replace the power supply PWB.
  Installation defectiveness on lower fuser thermistor. Check the mounting state of the lower fuser thermistor. If any problem is found, repair it.
  Defective lower fuser thermistor. Replace the lower fuser thermistor.

• Code: 6130
• Description: Lower fuser thermistor break error
  • After the fuser heater lamp is turned on, the temperature at the upper fuser roller lower than 40 °C/104 °F continues for 30 s.
• Causes: Defective engine controller PWB. Defective harness between fuser PWB and lower fuser thermistor, or poor contact of the connector terminals. Defective harness between fuser PWB and fuser unit connectors. Defective harness between power supply PWB and fuser unit connectors. Defective fuser PWB. Defective power supply PWB. Installation defectiveness on lower fuser thermistor.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.
  Defective harness between fuser PWB and lower fuser thermistor, or poor contact of the connector terminals. Check the insertion of connectors of the fuser PWB. Repair if necessary.
  Defective harness between fuser PWB and fuser unit connectors. Check the continuity of the harness and the insertion of connectors of the fuser PWB. Repair if necessary.

• Code: 6150
• Description: Lower fuser thermistor abnormal temperature detection
  • During copying, the temperature at the lower fuser roller lower than 100 °C/ 212 °F is detected continuously for 5 s.
• Causes: Installation defectiveness on lower fuser thermistor. Operation on lower fuser thermostat. Defective engine controller PWB. Defective power supply PWB. Defective fuser PWB. Defective harness between fuser PWB and upper fuser thermistor, or poor contact of the connector terminals. Defective lower fuser heater lamp. Defective harness between fuser unit connectors and lower fuser heater lamp. Defective harness between fuser unit connectors and power supply PWB.
• Remedy: Installation defectiveness on lower fuser thermistor. Check the mounting state of the lower fuser thermistor. If any problem is found, repair it.
  Operation on lower fuser thermostat. Replace the lower fuser thermostat.
  Defective engine controller PWB. Replace the engine controller PWB.
  Defective power supply PWB. Replace the power supply PWB.
  Defective fuser PWB. Replace the fuser PWB.
  Defective harness between fuser PWB and upper fuser thermistor, or poor contact of the connector terminals. Check the insertion of connectors of the fuser PWB. Repair if necessary.
  Defective lower fuser heater lamp. Replace the lower fuser heater lamp.
  Defective harness between fuser unit connectors and lower fuser heater lamp. Check the continuity of the harness and the insertion of connectors of the fuser PWB. Repair if necessary.
  Defective harness between fuser unit connectors and power supply PWB. Check the continuity of the harness and the insertion of connectors of the power supply PWB. Repair if necessary.

• Code: 6400
• Description: Zero-cross signal error
  • After power is turned on, the zerocross signal is not input within 3 s. • While fuser heater ON/OFF control is performed, the zero-cross signal is not input within 5 s.
• Causes: Defective engine controller PWB. Defective power supply PWB.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.
  Defective power supply PWB. Replace the power supply PWB.

• Code: 6410
• Description: Fuser unit insertion error
  • Improper adaptation of the machine and the fuser unit is detected.
• Causes: Fuser unit connector inserted incorrectly. Defective fuser unit connector.
• Remedy: Fuser unit connector inserted incorrectly. Reinsert the fuser unit connector if necessary.
  Defective fuser unit connector. Replace the fuser unit.

• Code: 6420
• Description: Fuser fuse cut error
  • After a new fuser unit is installed and the fuse cut signal is turned on and then the fuse cut signal is turned off after 3,000 ms, the fuse cannot be cut.
• Causes: Fuser unit is not conformed. Defective engine controller PWB.
• Remedy: Fuser unit is not conformed. Check parts number of fuser unit and install correct unit.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7001
• Description: Toner motor K error • After the toner motor K drive signal is turned on, the toner motor K overcurrent detection signal is detected continuously for 180 x 50 ms.
• Causes: Defective toner motor K. Defective engine controller PWB.
• Remedy: Defective toner motor K. Replace the toner motor K.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7002
• Description: Toner motor C error
  • After the toner motor C drive signal is turned on, the toner motor C overcurrent detection signal is detected continuously for 180 x 50 ms.
• Causes: Defective toner motor C. Defective engine controller PWB.
• Remedy: Defective toner motor C. Replace the toner motor C.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7003
• Description: Toner motor M error
  • After the toner motor M drive signal is turned on, the toner motor M overcurrent detection signal is detected continuously for 180 x 50 ms.
• Causes: Defective toner motor M. Defective engine controller PWB.
• Remedy: Defective toner motor M. Replace the toner motor M.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7004
• Description: Toner motor Y error
  • After the toner motor Y drive signal is turned on, the toner motor Y overcurrent detection signal is detected continuously for 180 x 50 ms.
• Causes: Defective toner motor Y. Defective engine controller PWB.
• Remedy: Defective toner motor Y. Replace the toner motor Y.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7101
• Description: Toner sensor K error
  • The value of input from toner sensor K is 4.5 V or more or 0.5 V or less.
• Causes: Defective toner sensor K. Defective engine controller PWB.
• Remedy: Defective toner sensor K. Replace the black process unit.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7102
• Description: Toner sensor C error
  • The value of input from toner sensor C is 4.5 V or more or 0.5 V or less.
• Causes: Defective toner sensor C. Defective engine controller PWB.
• Remedy: Defective toner sensor C. Replace the cyan process unit.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7103
• Description: Toner sensor M error
  • The value of input from toner sensor M is 4.5 V or more or 0.5 V or less.
• Causes: Defective toner sensor M. Defective engine controller PWB.
• Remedy: Defective toner sensor M. Replace the magenta process unit.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7104
• Description: Toner sensor Y error
  • The value of input from toner sensor Y is 4.5 V or more or 0.5 V or less.
• Causes: Defective toner sensor Y. Defective engine controller PWB.
• Remedy: Defective toner sensor Y. Replace the yellow process unit.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7200
• Description: Broken internal thermistor wire
  • The value of input from the internal thermistor 4.5 V or more is detected.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC3 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7210
• Description: Short-circuited internal thermistor
  • The value of input from the internal thermistor 0.3 V or less is detected.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC3 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7301
• Description: Toner hopper error (black process unit)
  • When black toner is replenished (simple replenishment), if the replenishment release level is not reached even if black toner is replenished for 3 s (1 s) with the black toner low level not detected, the state is regarded as a black toner container non-installing error. This error occurs four times.
• Causes: Black toner container is not installed. Defective engine controller PWB.
• Remedy: Black toner container is not installed. Check the state of the black toner container and install it properly.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7302
• Description: Toner hopper error (cyan process unit)
  • When cyan toner is replenished (simple replenishment), if the replenishment release level is not reached even if cyan toner is replenished for 3 s (1 s) with the black toner low level not detected, the state is regarded as a cyan toner container non-installing error. This error occurs four times.
• Causes: Cyan toner container is not installed. Defective engine controller PWB.
• Remedy: Cyan toner container is not installed. Check the state of the cyan toner container and install it properly.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7303
• Description: Toner hopper error (magenta process unit)
  • When magenta toner is replenished (simple replenishment), if the replenishment release level is not reached even if magenta toner is replenished for 3 s (1 s) with the magenta toner low level not detected, the state is regarded as a magenta toner container non-installing error. This error occurs four times.
• Causes: Magenta toner container is not installed. Defective engine controller PWB.
• Remedy: Magenta toner container is not installed. Check the state of the magenta toner container and install it properly.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7304
• Description: Toner hopper error (yellow process unit)
  • When yellow toner is replenished (simple replenishment), if the replenishment release level is not reached even if yellow toner is replenished for 3 s (1 s) with the yellow toner low level not detected, the state is regarded as a yellow toner container non-installing error. This error occurs four times.
• Causes: Yellow toner container is not installed. Defective engine controller PWB.
• Remedy: Yellow toner container is not installed. Check the state of the yellow toner container and install it properly.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7600
• Description: Toner ID sensor problem
  • The sampling input of toner ID sensor 1 and toner ID sensor 2 without patch exceeds the threshold respectively.
• Causes: Defective toner ID sensor 1 or 2. Defective engine controller PWB.
• Remedy: Defective toner ID sensor 1 or 2. Replace the transfer unit.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7610
• Description: Image density measurement timing problem
  • The measured value of density patch is abnormal.
• Causes: Faulty density due to a mechanical cause.
• Remedy: Faulty density due to a mechanical cause. Check the drum unit, high voltage unit, developing unit, and transfer unit. If any problem is found, replace the unit.

• Code: 7620
• Description: Color registration timing error
  • The number of PG lines for registration correction 32 is not detected properly
• Causes: Defective engine controller PWB.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7800
• Description: Broken external thermistor wire
  • The thermistor output value is 4.5 V or more.
• Causes: Poor contact in the connector terminals.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC3 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 7810
• Description: Short-circuited external thermistor • The thermistor input value is 0.5 V or less.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC3 on the engine controller PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective engine controller PWB. Replace the engine controller PWB.

• Code: 8010
• Description: Optional document finisher paper conveying motor problem
  • The LOCK signal of the paper conveying motor is detected for more than 500 ms while the paper conveying motor is operating. However, the first 1 s after the paper conveying motor is turned on is excluded from detection.
• Causes: Loose connection of the paper conveying motor connector. Defective paper conveying motor. Defective finisher main PWB.
• Remedy: Loose connection of the paper conveying motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective paper conveying motor. Replace the paper conveying motor and check for correct operation.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8020
• Description: Optional document finisher punch motor problem
  • The LOCK signal of the punch motor is detected for more than 500 ms while the punch motor is operating. However, the first 1 s after the punch motor is turned on is excluded from detection.
• Causes: Loose connection of the punch motor connector. Defective punch motor. Defective finisher main PWB.
• Remedy: Loose connection of the punch motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective punch motor. Replace the punch motor and check for correct operation.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8030
• Description: Optional document finisher upper paper conveying belt problem
  • During initialization, the intermediate tray upper sliding plate is not detected in the home position within 3 s after the belt returns to the home position. JAM87 is indicated the first time this problem occurs. If the problem reoccurs after initialization when the front cover is opened and closed, the problem is in the upper paper conveying belt. • When the intermediate tray upper sliding plate is operated from the home position, the upper paper conveying belt home position sensor does not turn off within 1 s.
• Causes: Phase shift of the upper paper conveying belt. Malfunction of the upper paper conveying belt motor. Malfunction of the upper paper conveying belt home position sensor. Loose connection of the upper paper conveying belt home position sensor connector. Incorrect insertion of the intermediate tray. Defective finisher main PWB.
• Remedy: Phase shift of the upper paper conveying belt. Correct the phase of the upper paper conveying belt and check for correct operation.
  Malfunction of the upper paper conveying belt motor. Replace the upper paper conveying belt motor and check for correct operation.
  Malfunction of the upper paper conveying belt home position sensor. Replace the upper paper conveying belt home position sensor and check for correct operation.
  Loose connection of the upper paper conveying belt home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Incorrect insertion of the intermediate tray. Check whether the intermediate tray catches are damaged.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8040
• Description: Optional document finisher lower paper conveying belt problem
  • During initialization, the intermediate tray lower sliding plate is not detected in the home position within 3 s after the belt returns to the home position. JAM87 is indicated the first time this problem occurs. If the problem reoccurs after initialization when the front cover is opened and closed, the problem is in the lower paper conveying belt. • When the intermediate tray lower sliding plate is operated from the home position, the lower paper conveying belt home position sensor does not turn off within 1 s.
• Causes: Phase shift of the lower paper conveying belt. Malfunction of the lower paper conveying belt motor. Malfunction of the lower paper conveying belt home position sensor. Loose connection of the lower paper conveying belt home position sensor connector. Incorrect insertion of the intermediate tray. Defective finisher main PWB.
• Remedy: Phase shift of the lower paper conveying belt. Correct the phase of the lower paper conveying belt and check for correct operation.
  Malfunction of the lower paper conveying belt motor. Replace the lower paper conveying belt motor and check for correct operation.
  Malfunction of the lower paper conveying belt home position sensor. Replace the lower paper conveying belt home position sensor and check for correct operation.
  Loose connection of the lower paper conveying belt home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Incorrect insertion of the intermediate tray. Check whether the intermediate tray catches are damaged.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8140
• Description: Optional document finisher main tray problem
  • When the main tray is not detected by the main tray upper limit detection sensor or the main tray load detection sensor within 20 s from the moment it starts ascending. • During main tray descent, the main tray upper limit detection sensor or the main tray load detection sensor does not turn off within 500 ms after it turns on. • During main tray ascent, the main tray upper limit detection sensor or the main tray load detection sensor stays on for more than 2 s.
• Causes: Loose connection of the main tray elevation motor connector. Malfunction of the main tray elevation motor. Malfunction of the main tray upper limit detection sensor. Loose connection of the main tray upper limit detection sensor connector. Malfunction of the main tray load detection sensor. Loose connection of the main tray load detection sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the main tray elevation motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the main tray elevation motor. Replace the main tray elevation motor and check for correct operation.
  Malfunction of the main tray upper limit detection sensor. Replace the main tray upper limit detection sensor and check for correct operation.
  Loose connection of the main tray upper limit detection sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the main tray load detection sensor. Replace the main tray load detection sensor and check for correct operation.
  Loose connection of the main tray load detection sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8150
• Description: Optional document finisher multi job tray problem
  • When the multi job tray is not detected by the multi job tray upper limit detection sensor within 15 s from the moment it starts ascending. • During multi job tray descent, the multi job tray upper limit detection sensor does not turn off within 500 ms after it turns on.
• Causes: Loose connection of the multi job tray elevation motor connector. Malfunction of the multi job tray elevation motor. Malfunction of the multi job tray upper limit detection sensor. Loose connection of the multi job tray upper limit detection sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the multi job tray elevation motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the multi job tray elevation motor. Replace the multi job tray elevation motor and check for correct operation.
  Malfunction of the multi job tray upper limit detection sensor. Replace the multi job tray upper limit detection sensor and check for correct operation.
  Loose connection of the multi job tray upper limit detection sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8170
• Description: Optional document finisher front upper side-registration guide problem
  • During initialization, the front upper side-registration guide is not detected in the home position within 1.5 s after the guide returns to the home position. JAM87 is indicated the first time this problem occurs. If the problem occurs after initialization when the front cover is opened and closed, the problem is in the front upper side-registration guide. • When the front upper side-registration guide is operated from the home position, the front upper side-registration home position sensor does not turn off within 500 ms.
• Causes: Loose connection of the front upper side-registration guide motor connector. Malfunction of the front upper sideregistration guide motor. Malfunction of the front upper sideregistration guide home position sensor. Loose connection of the front upper side-registration guide home position sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the front upper side-registration guide motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the front upper sideregistration guide motor. Replace the front upper side-registration guide motor and check for correct operation.
  Malfunction of the front upper sideregistration guide home position sensor. Replace the front upper side-registration guide home position sensor and check for correct operation.
  Loose connection of the front upper side-registration guide home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8180
• Description: Optional document finisher rear upper side-registration guide problem
  • During initialization, the rear upper side-registration guide is not detected in the home position within 1.5 s after the guide returns to the home position. JAM87 is indicated the first time this problem occurs. If the problem occurs after initialization when the front cover is opened and closed, the problem is in the rear upper side-registration guide. • When the rear upper side-registration guide is operated from the home position, the rear upper side-registration home position sensor does not turn off within 500 ms.
• Causes: Loose connection of the rear upper side-registration guide motor connector. Malfunction of the rear upper sideregistration guide motor. Malfunction of the rear upper sideregistration guide home position sensor. Loose connection of the rear upper side-registration guide home position sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the rear upper side-registration guide motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the rear upper sideregistration guide motor. Replace the rear upper side-registration guide motor and check for correct operation.
  Malfunction of the rear upper sideregistration guide home position sensor. Replace the rear upper side-registration guide home position sensor and check for correct operation.
  Loose connection of the rear upper side-registration guide home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8190
• Description: Optional document finisher lower side-registration guide problem
  • During initialization, the front/rear lower side-registration guides are not detected in the home position within 1.5 s after the guide returns to the home position. JAM87 is indicated the first time this problem occurs. If the problem occurs after initialization when the front cover is opened and closed, the problem is in the lower side-registration guide. • When the lower side-registration guide is operated from the home position, the lower side-registration home position sensor does not turn off within 500 ms.
• Causes: Loose connection of the lower sideregistration guide motor connector. Malfunction of the lower side-registration guide motor. Malfunction of the lower side-registration guide home position sensor. Loose connection of the lower sideregistration guide home position sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the lower sideregistration guide motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the lower side-registration guide motor. Replace the lower side-registration guide motor and check for correct operation.
  Malfunction of the lower side-registration guide home position sensor. Replace the lower side-registration guide home position sensor and check for correct operation.
  Loose connection of the lower sideregistration guide home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8210
• Description: Optional document finisher front stapler problem
  • During initialization, the front stapler is not detected in the home position within 500 ms after the front stapler returns to the home position. JAM90 is indicated the first time this problem occurs. If the problem occurs after initialization when the front cover is opened and closed, the problem is in the front stapler. • When the front stapler is operated from the home position, the front stapler home position sensor does not turn off within 500 ms.
• Causes: Loose connection of the front stapler motor connector. Malfunction of the front stapler motor. Malfunction of the front stapler home position sensor. Loose connection of the front stapler home position sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the front stapler motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the front stapler motor. Replace the front stapler motor and check for correct operation.
  Malfunction of the front stapler home position sensor. Replace the front stapler home position sensor and check for correct operation.
  Loose connection of the front stapler home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8220
• Description: Optional document finisher front clincher problem
  • During initialization, the front clincher is not detected in the home position within 500 ms after the front clincher returns to the home position. JAM90 is indicated the first time this problem occurs. If the problem occurs after initialization when the front cover is opened and closed, the problem is in the front clincher. • When the front clincher is operated from the home position, the front clincher home position sensor does not turn off within 500 ms.
• Causes: Loose connection of the front clincher motor connector. Malfunction of the front clincher motor. Malfunction of the front clincher home position sensor. Loose connection of the front clincher home position sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the front clincher motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the front clincher motor. Replace the front clincher motor and check for correct operation.
  Malfunction of the front clincher home position sensor. Replace the front clincher home position sensor and check for correct operation.
  Loose connection of the front clincher home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8230
• Description: Document finisher* rear stapler problem
  • During initialization, the rear stapler is not detected in the home position within 500 ms after the rear stapler returns to the home position. JAM90 is indicated the first time this problem occurs. If the problem occurs after initialization when the front cover is opened and closed, the problem is in the rear stapler. • When the rear stapler is operated from the home position, the rear stapler home position sensor does not turn off within 500 ms.
• Causes: Loose connection of the rear stapler motor connector. Malfunction of the rear stapler motor. Malfunction of the rear stapler home position sensor. Loose connection of the rear stapler home position sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the rear stapler motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the rear stapler motor. Replace the rear stapler motor and check for correct operation.
  Malfunction of the rear stapler home position sensor. Replace the rear stapler home position sensor and check for correct operation.
  Loose connection of the rear stapler home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8240
• Description: Optional document finisher rear clincher problem
  • During initialization, the rear clincher is not detected in the home position within 500 ms after the rear clincher returns to the home position. JAM90 is indicated the first time this problem occurs. If the problem occurs after initialization when the front cover is opened and closed, the problem is in the rear clincher. • When the rear clincher is operated from the home position, the rear clincher home position sensor does not turn off within 500 ms.
• Causes: Loose connection of the rear clincher motor connector. Malfunction of the rear clincher motor. Malfunction of the rear clincher home position sensor. Loose connection of the rear clincher home position sensor connector. Defective finisher main PWB.
• Remedy: Loose connection of the rear clincher motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the rear clincher motor. Replace the rear clincher motor and check for correct operation.
  Malfunction of the rear clincher home position sensor. Replace the rear clincher home position sensor and check for correct operation.
  Loose connection of the rear clincher home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8300
• Description: Optional document finisher centerfold unit communication problem
  • Communication with the centerfold unit is not possible although the connection is detected.
• Causes: Loose connection of the centerfold unit set switch connecto r. Defective centerfold unit set switch. Defective centerfold unit main PWB. Defective finisher main PWB.
• Remedy: Loose connection of the centerfold unit set switch connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective centerfold unit set switch. Replace the centerfold unit set switch and check for correct operation.
  Defective centerfold unit main PWB. Replace the centerfold unit main PWB and check for correct operation.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 8310
• Description: Optional document finisher centerfold unit side-registration guide problem
  • During initialization, the front/rear sideregistration guides are not detected in the home position within 600 ms after the guide returns to the home position. • When the side-registration guide is operated from the home position, the side-registration guide home position sensor does not turn off within 100 ms.
• Causes: Loose connection of the side-registration guide motor connector. Malfunction of the side-registration guide motor. Malfunction of the side-registration guide home position sensor. Loose connection of the side-registration guide home position sensor connector. Defective centerfold unit main PWB.
• Remedy: Loose connection of the side-registration guide motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the side-registration guide motor. Replace the side-registration guide motor and check for correct operation.
  Malfunction of the side-registration guide home position sensor. Replace the side-registration guide home position sensor and check for correct operation.
  Loose connection of the side-registration guide home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective centerfold unit main PWB. Replace the centerfold unit main PWB and check for correct operation.

• Code: 8320
• Description: Optional document finisher centerfold unit centering plate problem
  • During initialization, the centering plate is not detected in the home position when the centering plate returns to the home position.
• Causes: Loose connection of the centering plate motor connector. Malfunction of the centering plate motor. Malfunction of the centering plate home position sensor. Loose connection of the centering plate home position sensor connector. Defective centerfold unit main PWB.
• Remedy: Loose connection of the centering plate motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the centering plate motor. Replace the centering plate motor and check for correct operation.
  Malfunction of the centering plate home position sensor. Replace the centering plate home position sensor and check for correct operation.
  Loose connection of the centering plate home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective centerfold unit main PWB. Replace the centerfold unit main PWB and check for correct operation.

• Code: 8330
• Description: Optional document finisher centerfold blade problem
  • During initialization, the centerfold blade is not detected in the home position within a specified period of time.
• Causes: Loose connection of the centerfold blade motor connector. Malfunction of the centerfold blade motor. Malfunction of the centerfold blade home position sensor. Loose connection of the centerfold blade home position sensor connector. Defective centerfold unit main PWB.
• Remedy: Loose connection of the centerfold blade motor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Malfunction of the centerfold blade motor. Replace the centerfold blade motor and check for correct operation.
  Malfunction of the centerfold blade home position sensor. Replace the centerfold blade home position sensor and check for correct operation.
  Loose connection of the centerfold blade home position sensor connector. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective centerfold unit main PWB. Replace the centerfold unit main PWB and check for correct operation.

• Code: F000
• Description: Main controller PWB error
  • The communication breakdown occurs between the main controller PWB and the operation panel PWB during the predetermined period in seconds
• Causes: Defective main controller PWB. Defective operator panel PWB. Defective engine interface PWB. Defective harness between operator panel PWB and engine interface PWB.
• Remedy: Defective main controller PWB. Replace the main controller PWB.
  Defective operator panel PWB. Replace the operator panel PWB.
  Defective engine interface PWB. Replace the engine interface PWB.
  Defective harness between operator panel PWB and engine interface PWB. Check the continuity of the harness. Check if the connectors are securely inserted.

• Code: F010
• Description: Code ROM checksum error
  • Checksum for the system code ROM PWB that holds the system program is wrong.
• Causes: Defective code ROM PWB. Defective main controller PWB.
• Remedy: Defective code ROM PWB. Replace the code ROM PWB.
  Defective main controller PWB. Replace the main controller PWB.

• Code: F020
• Description: Memory check error
  • Access to the expanding memory (DIMM) or RAM on the main controller PWB failed.
• Causes: Defective main controller PWB. Defective expansion memory (DIMM).
• Remedy: Defective main controller PWB. Replace the main controller PWB.
  Defective expansion memory (DIMM). Replace the expansion memory (DIMM).

• Code: F030
• Description: Main controller PWB system error
  • The error pertaining to the system occurred except the F0 (F010) condition.
• Causes: Defective main controller PWB.
• Remedy: Defective main controller PWB. Replace the main controller PWB.

• Code: F040
• Description: Main – Engine controller PWBs communication error
  • The communication breakdown occurred between the main controller PWB and the engine controller PWB during the predetermined period in seconds.
• Causes: Defective engine controller PWB. Defective main controller PWB.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.
  Defective main controller PWB. Replace the main controller PWB.

• Code: F050
• Description: Engine checksum error
  • Checksum result failed with the CPU and engine controller PWB.
• Causes: Defective engine controller PWB.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.

• Code: F060
• Description: Engine RAM error
  • Checksum failed with RAM of the engine controller PWB.
• Causes: Defective engine controller PWB.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.

• Code: F070
• Description: Flash ROM checksum error
  • Checksum failed with the flash ROM on the engine controller PWB.
• Causes: Defective engine controller PWB.
• Remedy: Defective engine controller PWB. Replace the engine controller PWB.

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