Code: F1-64
Description:
No. 1 pickup motor trouble
Causes:
Motor lock, control PWB trouble, home position sensor breakdown, connection harness / connector connection trouble.
Remedy:
Use Sim. 3-31 to check the operation of the No. 1 pickup motor. Check connection from the control PWB to the motor. Replace the control PWB and the sensor part.
Code: F1-65
Description:
No. 2 pickup motor trouble
Causes:
Motor lock, control PWB trouble, home position sensor breakdown, connection harness / connector connection trouble.
Remedy:
Use Sim. 3-31 to check the operation of the No. 2 pickup motor. Check connection from the control PWB to the motor. Replace the control PWB and the sensor part.
Code: F1-66
Description:
No. 1 lift motor trouble
Causes:
Motor lock, control PWB trouble, home position sensor breakdown, connection harness / connector connection trouble.
Remedy:
Use Sim. 3-31 to check the operation of the No. 1 lift motor. Check connection from the control PWB to the motor. Replace the control PWB and the sensor part.
Code: F1-67
Description:
No. 2 lift motor trouble
Causes:
Motor lock, control PWB trouble, home position sensor breakdown, connection harness / connector connection trouble.
Remedy:
Use Sim. 3-31 to check the operation of the No. 2 lift motor. Check connection from the control PWB to the motor. Replace the control PWB and the sensor part.
Code: F1-86
Description:
Return collar oscillation motor trouble
Causes:
Motor lock, motor harness short/open trouble, control PWB trouble, home position sensor breakdown, connection harness / connector connection trouble.
Remedy:
Use Sim. 3-3 to check the operation of the return collar oscillation motor. Check connection from the control PWB to the motor. Replace the control PWB and the sensor part.
Code: F1-89
Description:
Shift motor trouble
Causes:
Motor lock, motor harness short/open trouble, control PWB trouble, home position sensor breakdown, connection harness / connector connection trouble.
Remedy:
Use Sim. 3-3 to check the operation of the shift motor Check connection from the control PWB to the motor. Replace the control PWB and the sensor part.
Code: F1-90
Description:
Communication trouble between the decurler and the downstream units.
Causes:
Noise on the communication line, control PWB trouble, disconnection of connector or harness.
Remedy:
Turn OFF/ON the power. Check connection of the connector between main unit and decurler. Check connection of the connector between the decurler unit and the downstream units of the decurler. Replace the decurler control PWB. Replace the control PWB of the downstream units of the decurler.
Code: F1-96
Description:
Decurler transport motor abnormality (DCM100)
Causes:
Motor driver IC overcurrent detection, overheat detection.
Remedy:
Use SIM3-51 to check the operation of the decurler transport motor. Replace the control PWB.
Code: F1-97
Description:
Decurler unit fan 1 (Upper cooling fan) abnormality (DCFAN100)
Causes:
Motor lock, motor harness short/open, control PWB trouble, disconnection of harness or connector.
Remedy:
Use SIM3-51 to check the operation of the decurler unit fan 1 (Upper cooling fan). Check connection from the control PWB to the fan motor. Replace the control PWB. Replace the fan motor.
Code: F1-98
Description:
Decurler unit fan 2 (Lower cooling fan) abnormality (DCFAN103)
Causes:
Motor lock, motor harness short/open, control PWB trouble, disconnection of harness or connector.
Remedy:
Use SIM3-51 to check the operation of the decurler unit fan 2 (Lower cooling fan). Check connection from the control PWB to the fan motor. Replace the control PWB. Replace the fan motor.
Code: F1-99
Description:
Decurler unit fan 3 (Transport motor cooling fan) abnormality (DCFAN101)
Causes:
Motor lock, motor harness short/open, control PWB trouble, disconnection of harness or connector
Remedy:
Use SIM3-51 to check the operation of the decurler unit fan 3 (Transport motor cooling fan). Check connection from the control PWB to the fan motor. Replace the control PWB. Replace the fan motor.
Code: F2-22
Description:
Discharge lamp trouble (K)
Causes:
Contact trouble between the discharge lamp PWB (K) and the PCU PWB. Discharge lamp PWB (K) trouble. PCU PWB trouble.
Remedy:
Use SIM5-4 to check lighting of the discharge lamp (K) [DL_K]. Check the discharge lamp PWB (K). Check the harness and the connector. Replace the PCU PWB.
Code: F2-33
Description:
Surface potential sensor trouble
Causes:
Sensor dirt, sensor trouble. Surface potential sensor harness connection trouble. PCU PWB trouble. Drum surface state abnormality. Grid high voltage output trouble. Drum charging abnormality due to dirt on the MC grid. The drum life is reached.
Remedy:
Check connection of the harness and the connector of the sensor. Check the PCU PWB. Check for dirt on the MC grid. Clean or replace as needed. Check the drum surface condition. Use Sim. 22-1 to check the drum life meter. If it is 100%, it means that the drum life is reached, and maintenance must be performed. Use Sim. 44-3 to execute DARK V0 and check the operation. Check the grid high voltage output.
Code: F2-39
Description:
Process temperature sensor trouble
Causes:
Process thermistor trouble. Process thermistor harness connection trouble. PCU PWB trouble.
Remedy:
Replace the process thermistor. Check connection of the process thermistor harness and the connector. Replace the PCU PWB
Code: F2-40
Description:
Toner density sensor trouble (K)
Causes:
Toner density sensor output abnormality. Sensor connector and harness connection trouble. Developing unit trouble. PCU PWB trouble.
Remedy:
Replace the toner density sensor. Check connection of the sensor connector and the harness. Replace the developing unit. Replace the PCU PWB.
Code: F2-47
Description:
Room temperature thermistor trouble
Causes:
Room temperature thermistor trouble, room temperature thermistor harness connection trouble, PCU PWB trouble.
Remedy:
Check connection of the room temperature harness / connector. Check the PCU PWB.

Code: F2-58
Description:
Process humidity sensor trouble
Causes:
Temperature/humidity sensor trouble. Process humidity sensor harness and connector connection trouble PCU PWB trouble.
Remedy:
Replace the temperature/humidity sensor. Check connection of the temperature/humidity sensor harness and the connector. Replace the PCU PWB.
Code: F2-59
Description:
Room temperature/humidity thermistor trouble
Causes:
Room temperature humidity sensor trouble, room temperature humidity sensor harness connection trouble, PCU PWB trouble.
Remedy:
Check connection of the room temperature humidity sensor harness/connector. Check the PCU PWB.
Code: F2-64
Description:
Toner supply operation trouble (K)
Causes:
Toner motor trouble. Toner density sensor trouble. Connector/harness trouble. PCU PWB trouble. Toner cartridge trouble. Developing unit trouble. Toner hopper section trouble
Remedy:
Replace the toner motor. Replace the toner density sensor. Connector and harness check. Replace the PCU PWB. Replace the toner cartridge. Replace the developing unit. Check the toner hopper section.
Code: F2-70
Description:
Improper toner cartridge detection (K)
Causes:
An improper toner cartridge is inserted. (The main unit detects a toner cartridge of a different specification.) Toner cartridge trouble. PCU PWB trouble.
Remedy:
Replace the toner cartridge. Replace the PCU PWB.
Code: F2-74
Description:
Toner cartridge CRUM error (K)
Causes:
Toner cartridge (CRUM) trouble. PCU PWB trouble. Connector and harness trouble between PCU PWB and toner cartridge
Remedy:
Replace the toner cartridge. Replace the PCU PWB. Check the connector and the harness between the PCU PWB and the toner cartridge.
Code: F2-78
Description:
Image density sensor adjustment trouble
Causes:
Image density sensor trouble. Connection trouble of the harness between the PCU PWB and the image density sensor. Dirt on the image density sensor, transfer belt cleaning trouble Calibration plate solenoid operation trouble
Remedy:
Check the sensor and the harness Check the operation of the calibration plate solenoid, and check the transfer belt surface conditions. If the trouble is not removed, perform the following procedures depending on the check results. Replace the registration image sensor. Replace the transfer belt. Replace the calibration plate solenoid. Replace the PCU PWB.
Code: F2-91
Description:
High density process control high voltage error (K)
Causes:
• Image density sensor trouble, harness connection trouble between the PCU PWB and the image density sensor, dirt on the image density sensor, transfer belt cleaning trouble • Developing tank abnormality
Remedy:
• Use SIM44-02 to execute the gain adjustment of the process control sensor. When "Error" is displayed, it may be considered as breakdown. Check the sensor and the harness. When the adjustment is normally completed, check the drum surface and the belt surface. • Replace the developing tank.
Code: F3-12
Description:
Paper feed tray 1 lift operation trouble
Causes:
LUD1 is not turned ON within the specified time. CLUD1 sensor trouble. Paper feed tray 1 lift unit trouble. PCU PWB trouble. Sensor harness and connector connection trouble
Remedy:
Check connection of the harness and the connector of LUD1. Replace the lift unit. Replace the PCU PWB

Code: F3-22
Description:
Paper feed tray 2 lift operation trouble
Causes:
LUD2 does not turn ON within the specified time. CLUD2 sensor trouble. Paper feed tray 2 lift unit trouble. PCU PWB trouble. Sensor harness and connector connection trouble
Remedy:
Check the harness and the connector of LUD2. Replace the lift unit. Replace the PCU PWB.
Code: F3-32
Description:
Main body cassette 3 lift trouble
Causes:
C3LUD sensor trouble. Cassette 3 lift motor trouble. Harness connection trouble between the PCU PWB, the lift unit, and the paper feed unit
Remedy:
Check the harness and the connector of C3LUD. Check the lift unit.
Code: F3-42
Description:
Main body cassette 4 lift trouble
Causes:
C4LUD sensor trouble. Cassette 4 lift motor trouble. Harness connection trouble between the PCU PWB, the lift unit, and the paper feed unit
Remedy:
Check the harness and the connector of C4LUD. Check the lift unit.
Code: F6-00
Description:
MFPC PWB - FAX communication trouble
Causes:
MFP - FAX communication establishment error / Framing / Parity / Protocol error
Remedy:
Case 1 Cause FAX control PWB trouble. Check and Remedy Replace the FAX control PWB. Case 2 Cause FAX control PWB - MFPC PWB connector and harness trouble Check and Remedy Check the connector and the harness between the FAX control PWB and the MFPC PWB. Case 3 Cause FAX control PWB - Mother board connector and harness trouble Check and Remedy Check the connector and the harness between the FAX control PWB and the mother board. Case 4 Cause FAX control PWB ROM trouble / ROM pin breakage Check and Remedy Check the ROM of the FAX control PWB.
Code: F6-01
Description:
FAX control PWB EEPROM read/write error
Causes:
FAX control PWB EEPROM access error (Read and write)
Remedy:
Case 1 Cause FAX control PWB EEPROM trouble Check and Remedy Check that no trouble occurs after replacement of EEPROM. Execute the memory check of SIM66-3 to insure that EEPROM can be accessed. Case 2 Cause FAX control PWB EEPROM access circuit trouble Check and Remedy Replace the FAX control PWB.
Code: F6-04
Description:
FAX MODEM operation trouble
Causes:
FAX control PWB MODEM chip operation trouble
Remedy:
Case 1 Cause FAX MODEM chip operation trouble. Check and remedy Replace the FAX control PWB. Case 2 Cause The FAX MODEM chip cannot be accessed. Check and Remedy Replace the FAX control PWB.
Code: F6-21
Description:
Improper combination of TEL/LIU PWB and FAX soft switch
Causes:
Incompatibility between the TEL/LIU PWB and the FAX control PWB information (soft switch)
Remedy:
Case 1 Cause The destination of the TEL/LIU PWB installed is improper. Check and Remedy Check the destination of the TEL/LIU PWB. Case 2 Cause TEL/LIU PWB trouble. Check and Remedy Replace the TEL/LIU PWB.
Code: F6-30
Description:
FAX 1-chip microprocessor access error (FAX detection)
Causes:
FAX 1-chip microprocessor access error (Read and write)
Remedy:
Case 1 Cause Program writing trouble to the 1-chip microprocessor, or no program data written. Check and Remedy Use SIM66-42 to rewrite the 1-chip microprocessor program. Case 2 Cause FAX 1-chip microprocessor circuit trouble. Check and Remedy Replace the FAX control PWB.

Code: F6-97
Description:
Incompatibility between FAX control PWB and the main machine
Causes:
The FAX control PWB installed is improper. FAX control PWB trouble.
Remedy:
Install a proper FAX control PWB. Replace the FAX control PWB.
Code: F6-98
Description:
Incompatibility between the FAX control PWB destination and the main machine destination
Causes:
Incompatibility between the destination information written into the FAX control PWB EEPROM and that in the main machine (set with SIM26-6)
Remedy:
1) Check the destination of the FAX control PWB. 2) Check the destination of the machine. (SIM26-6)
Code: F9-91
Description:
Communication error between MFP and the printer section when booting
Causes:
MFPC (section) PWB trouble. Printer (section) PWB trouble. PrintPrinter PWB trouble Font ROM contact trouble or error DIMM memory contact trouble or errorer flash ROM trouble. MFPC (section) PWB - printer (section) PWB connection trouble.
Remedy:
Replace the MFPC (section) PWB. Replace the printer (section) PWB. Replace the printer flash ROM. Check connection between the MFPC (section) PWB and the printer (section) PWB.
Code: F9-92
Description:
Printer (section) PWB hardware error
Causes:
Printer PWB trouble Font ROM contact trouble or error DIMM memory contact trouble or error
Remedy:
Replace the printer PWB. Check the font ROM socket. Check the DIMM memory socket. Check the font ROM. Replace the DIMM memory.
Code: FF-00
Description:
Double feed detection trouble (PCU) (105/120 ppm only)
Causes:
Double feed sensor abnormality. Harness / circuit trouble related to the double feed sensor. Insertion failure of the drawer connector of the PS unit.
Remedy:
Check the circuit related to the double feed sensor and the harness and the connector. Replace the double feed detection PWB and the sensor.
Code: FF-10
Description:
Double feed detection trouble (SCU) (105/120 ppm only)
Causes:
Double feed sensor abnormality. Harness/circuit trouble related to the double feed sensor.
Remedy:
Check the circuit related to the double feed sensor and the harness and the connector. Replace the double feed detection PWB and the sensor.
Code: H2-00
Description:
Thermistor open trouble (TH_UM_AD2)
Causes:
Thermistor trouble PCU PWB trouble Thermistor connector and harness connection trouble Fusing section connector connection trouble Fusing unit not installed
Remedy:
Use SIM44-14 to check the state of the thermistor. Replace the thermistor. Replace the PCU PWB. Check connection of the thermistor connector and the harness. Check the connector in the fusing section.
Code: H2-02
Description:
Contact thermistor upper sub detection thermistor open
Causes:
Thermistor trouble Control PWB trouble Fusing section connector connection trouble AC power trouble Fusing unit not installed.
Remedy:
Check connection of the harness and the connector from the thermistor to the control PWB.
Code: H2-03
Description:
Non-contact thermistor upper main compensation thermistor open
Causes:
Thermistor trouble Control PWB trouble Fusing section connector connection trouble AC power trouble Fusing unit not installed.
Remedy:
Check connection of the harness and the connector from the thermistor to the control PWB.
Code: H3-00
Description:
Fusing section high temperature trouble (TH_UM)
Causes:
The fusing temperature exceeds the specified level. Thermistor trouble PCU PWB trouble Thermistor connector and harness connection trouble HL control PWB trouble
Remedy:
Use SIM44-14 to check the state of the thermistor. Use SIM5-2 to check the flashing operation of the heater lamp. Use SIM14 to cancel the trouble. Replace the thermistor. Replace the PCU PWB. Check connection of the thermistor connector and the harness. Replace the HL control PWB.
Code: H3-02
Description:
Fusing section high temperature trouble (TH_US)
Causes:
The fusing temperature exceeds the specified level. Thermistor trouble PCU PWB trouble Thermistor connector and harness connection trouble HL control PWB trouble
Remedy:
Use SIM44-14 to check the state of the thermistor. Use SIM5-2 to check the flashing operation of the heater lamp. Use SIM14 to cancel the trouble. Replace the thermistor. Replace the PCU PWB. Check connection of the thermistor connector and the harness. Replace the HL control PWB.
Code: H4-00
Description:
Fusing section low temperature trouble (TH_UM_AD2)
Causes:
Thermistor trouble. Heater lamp trouble. PCU PWB trouble. Thermostat trouble. Connector, harness connection trouble. HL control PWB trouble. Power unit trouble.
Remedy:
Use SIM14 to cancel the trouble. Use SIM44-14 to check the state of the thermistor. Use SIM5-2 to check the flashing operation of the heater lamp. Replace the thermistor. Replace the heater lamp. Replace the PCU PWB. Replace the thermostat. Check connection of the connector and the harness. Replace the HL control PWB. Replace the power unit.
Code: H4-02
Description:
Fusing section low temperature trouble (TH_US)
Causes:
Thermistor trouble. Heater lamp trouble. PCU PWB trouble. Thermostat trouble. Connector, harness connection trouble. HL control PWB trouble. Power unit trouble.
Remedy:
Use SIM14 to cancel the trouble. Use SIM44-14 to check the state of the thermistor. Use SIM05-02 to check the flashing operation of the heater lamp. Replace the thermistor. Replace the heater lamp. Replace the PCU PWB. Replace the thermostat. Check connection of the connector and the harness. Replace the HL control PWB. Replace the power unit.
Code: H4-30
Description:
Upper main thermistor differential input abnormality (TH_UM)
Causes:
HL_UM does not turn on. Thermistor trouble. Harness trouble. PCU PWB trouble
Remedy:
Use SIM05-02 to check the flashing operation of the heater lamp. When the heater lamp flashes normally, check the thermistor and its harness. Check the thermistor input circuit section of the PCU PWB. When the lamp does not light up, check for disconnection in the heater lamp and breakage of the thermostat. Check the interlock switch. Check the lamp control circuit of the AC PWB and the PCU PWB. Use SIM14 to cancel the trouble.
Code: H5-01
Description:
5 times continuous POD1 not-reach jam
Causes:
A fusing jam is not canceled completely. (A jam paper remains.) POD1 sensor trouble Fusing unit installation trouble POD1 sensor connector and harness connection trouble PCU PWB trouble Fusing unit, drive section trouble
Remedy:
Replace the POD1 sensor. Check installation of the fusing unit. Replace the fusing unit. Check or repair the fusing drive section. Check connection of the POD1 sensor connector and the harness. Replace the PCU PWB. Use SIM14 to cancel the trouble.
Code: H7-10
Description:
Recovery error from low fuser temp. (TH_UM_AD2)
Causes:
Thermistor trouble. Heater lamp trouble. PCU PWB trouble. Thermostat trouble. Connector, harness connection trouble. HL control PWB trouble. Power unit trouble.
Remedy:
Replace the thermistor. Replace the heater lamp. Replace the PCU PWB. Replace the thermostat. Check connection of the connector and the harness. Replace the HL control PWB. Replace the power unit. Use SIM5-2 to check the flashing operation of the heater lamp.

Code: H7-12
Description:
Recovery error from low fuser temp. (TH_US)
Causes:
Thermistor trouble. Heater lamp trouble. PCU PWB trouble. Thermostat trouble. Connector, harness connection trouble. HL control PWB trouble. Power unit trouble.
Remedy:
Replace the thermistor. Replace the heater lamp. Replace the PCU PWB. Replace the thermostat. Check connection of the connector and the harness. Replace the HL control PWB. Replace the power unit. Use SIM5-2 to check the flashing operation of the heater lamp.
Code: L1-00
Description:
Scanner feed trouble
Causes:
Scanner unit trouble. SCU PWB trouble. Harness and connector connection trouble. Scanner home position sensor trouble. Scanner motor trouble.
Remedy:
Use SIM1-1 to check the scan operation. Replace the scanner unit. Replace the SCU PWB. Check connection of the connectors and the harness. Replace the scanner home position sensor. Replace the scanner motor.
Code: L2-10
Description:
CCD cooling fan motor trouble
Causes:
Fan motor trouble, fan motor related harness and circuit trouble.
Remedy:
Check the fan motor related circuits (SCNcnt PWB) and their harness and connector.
Code: L3-00
Description:
Scanner return trouble
Causes:
Scanner unit trouble SCU PWB trouble Harness and connector connection trouble Scanner home position sensor trouble Scanner motor trouble
Remedy:
Use SIM1-1 to check the scan operation. Replace the scanner unit. Replace the SCU PWB. Check connection of the connectors and the harness. Replace the scanner home position sensor. Replace the scanner motor.
Code: L4-01
Description:
Main motor lock trouble
Causes:
Main motor (MM/MM2) lock trouble. Connection failure or disconnection of the connector and the harness. Control circuit trouble.
Remedy:
Use Sim. 6-1 to check the operation of the main motor (MM/MM2) lock. Check the harness and the connector. (between the PCU PWB and the motor, between the HL PWB and the motor)
Code: L4-02
Description:
Main motor 2 lock trouble
Causes:
Paper feed motor trouble. Harness connection trouble between the PCU PWB and the paper feed motor. Control circuit trouble.
Remedy:
Use SIM6-1 to check the operation of the paper feed motor. Check connection of the connector and the harness between the PCU PWB and the toner paper feed motor.
Code: L4-03
Description:
Fusing motor lock trouble
Causes:
Fusing motor trouble Fusing motor harness and connector connection trouble PCU PWB trouble
Remedy:
Use SIM6-1 to check the operation of the fusing motor. Replace the Fusing motor. Check connection of the fusing motor harness and the connection. Replace the PCU PWB.
Code: L4-04
Description:
Toner hopper/Developing motor trouble
Causes:
Toner hopper/developing motor trouble. Harness connection trouble between the PCU PWB and the toner hopper/developing motor. Control circuit trouble.
Remedy:
Check the toner hopper/developing motor operation with Sim. 25-1. Check connection of the connector and the harness between the PCU PWB and the toner hopper/ developing motor.

Code: L4-14
Description:
Toner cartridge motor lock trouble
Causes:
Toner cartridge motor trouble. Toner cartridge motor rotation sensor trouble. Harness connection trouble between the PCU PWB and the toner cartridge motor. Harness trouble between the PCU PWB and the toner cartridge motor rotation sensor. Toner cartridge trouble.
Remedy:
Use Sim. 10-1 to check the operation of the toner cartridge motor. Use Sim. 10-3 to check the operation of the toner cartridge motor rotation sensor. Check the harness and the connector between the PCU PWB and the toner cartridge motor. Check the harness and the connector between the PCU PWB and the toner cartridge motor rotation sensor. Replace the toner cartridge.
Code: L4-17
Description:
Drum motor lock trouble (K)
Causes:
Drum motor trouble Harness connection trouble between the PCU PWB and the drum motor Control circuit trouble
Remedy:
Use SIM25-01 to check the operation of the drum motor. Check the harness and the connector between the PCU PWB and the developing motor. Replace the PCU PWB. Replace the drum motor.
Code: L4-27
Description:
Decurler motor lock trouble
Causes:
Decurler motor trouble. Harness connection trouble between the PCU PWB and the decurler motor. Control circuit trouble.
Remedy:
Use SIM06-01 to check the operation of the decurler motor. Replace the decurler motor. Check connection of the decurler motor harness and the connector. Replace the PCU PWB.
Code: L4-28
Description:
Sub power source cooling fan motor
Causes:
Fan motor trouble, Mother PWB trouble, fan motor/Mother PWB harness connection trouble, control circuit trouble
Remedy:
Use SIM06-02 to check the operation of the fan motor. Check the mother PWB, and the harness and the connector between the fan motor and the Mother PWB.
Code: L4-30
Description:
Controller fan motor trouble
Causes:
Fan motor trouble, Mother PWB trouble, fan motor/Mother PWB harness connection trouble, control circuit trouble
Remedy:
Use SIM06-02 to check the operation of the fan motor. Check the Mother PWB, and the harness and the connector between the fan motor and the Mother PWB.
Code: L4-31
Description:
Machine heat-exhaust fan trouble
Causes:
The fan does not rotate because of disconnection of the fan connector or other trouble.
Remedy:
Check the harness and the connector between the PCU PWB and the fan. Use SIM6-2 to check that the fan is actually rotating.
Code: L4-32
Description:
Power source cooling fan trouble
Causes:
The fan does not rotate because of disconnection of the ozone exhaust fan or other trouble.
Remedy:
Check the harness and the connector between the PCU PWB and the fan. Use SIM6-2 to check that the fan is actually rotating.
Code: L4-34
Description:
Polygon cooling fan trouble
Causes:
The fan does not rotate because of disconnection of the fan connector or other trouble.
Remedy:
Check the harness and the connector between the PCU PWB and the fan. Use SIM6-2 to check that the fan is actually rotating.