Code: C1 00
Description:
MC trouble. Main charger output abnormality (Output open) Trouble signal is outputted from the high voltage transformer.
Causes:
The main charger is not installed properly. The main charger is not assembled properly. Disconnection of connector of high voltage transformer. High voltage harness disconnection or breakage.
Remedy:
Use the diag mode or DIAG to check the main charger output. Check for disconnection of the main charger. Replace the high voltage unit.
Code: E7 02
Description:
Laser trouble. BD signal from LSU is kept OFF, or ON.
Causes:
The connector of LSU or the harness in LSU is disconnected or broken. The polygon motor does not rotate normally. The laser home position sensor in LSU is shifted. The proper voltage is not supplied to the power line for laser. Laser emitting diode trouble PCU PWB trouble Controller PWB trouble
Remedy:
Check for disconnection of the LSU connector. Use DIAG (SIM 61-1) to check LSU operation. Check that the polygon motor rotates normally or not. Check light emission of laser emitting diode. Replace the LSU unit. Replace the PCU PWB. Replace the Controller PWB.
Code: E7 03
Description:
HDD trouble. HDD does not operate properly in the machine with HDD installed.
Causes:
HDD is not installed properly to the Controller PWB. HDD does not operate properly in the Controller PWB. Controller PWB trouble
Remedy:
Check installation of HDD to the Controller PWB. Check connection of the harness of HDD to the Controller PWB. Use DIAG (SIM 62-2, -3) to check read/write of HDD. Replace HDD. Replace Controller PWB.
Code: E7 06
Description:
Decode error trouble. A decode error occurs during making of an image.
Causes:
Data error during input from PCI to PM. PM trouble Data error during image compression/ transfer. Controller PWB abnormality
Remedy:
Check insertion of the PWB. (PCI bus) If the error occurred in a FAX job, check installation of the FAX PWB. For the other cases, check the Controller PWB. Replace the Controller PWB.
Code: E7 50
Description:
LSU connection trouble. An LSU which does not conform to the machine is installed.
Causes:
PCU PWB trouble LSU trouble
Remedy:
Check LSU PWB. Check PCU PWB. Check connection of the connector and the harness between PCU and LSU.
Code: EE EL
Description:
Auto developer adjustment trouble (Over-toner). The sample data is of 68 or below when auto developer adjustment is performed.
Causes:
Toner concentration sensor trouble Charging voltage, developing voltage abnormality Insufficient toner concentration Developing unit trouble PCU PWB trouble
Remedy:
Use DIAG (SIM25-2) to perform auto developer adjustment.
Code: EE EU
Description:
Auto developer adjustment trouble (Under-toner) Detail The sample data is of 168 or above when auto developer adjustment is performed.
Causes:
Insufficient toner concentration Charging voltage, developing voltage abnormality Insufficient toner concentration Developing unit trouble PCU PWB trouble
Remedy:
Use DIAG (SIM25-2) to perform auto developer adjustment.
Code: F1 00
Description:
Finisher (AR-FN6) communication trouble. Communication cable test error after turning on the power or exiting from DIAG. Communication error with the finisher
Causes:
Improper connection or disconnection of connectors and harness between the machine and the finisher. Finisher control PWB trouble Control PWB (PCU) trouble Malfunction by noises
Remedy:
Canceled by turning OFF/ON the power. Check connectors and harness in the communication line. Replace the finisher control PWB or PCU PWB.

Code: F1 00
Description:
Mail-bin stacker (AR-MS1) communication trouble. Communication cable test error after turning on the power or exiting from DIAG. Communication error with the Mail-bin stacker.
Causes:
Improper connection or disconnection of connector and harness between the machine and the Mail-bin stacker. Mail-bin stacker control PWB trouble Control PWB (PCU) trouble Malfunction by noises
Remedy:
Canceled by turning OFF/ON the power. Check harness and connector in the communication line. Replace the Mail-bin stacker PWB or PCU PWB.
Code: F1 02
Description:
Mail-bin stacker (AR-MS1) transport motor abnormality
Causes:
Transport motor trouble
Remedy:
Motor lock Motor rpm abnormality Overcurrent to the motor Mail-bin stacker control PWB trouble
Code: F1 03
Description:
Console finisher (AR-FN7) paddle motor trouble. Paddle motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 06
Description:
Console finisher (AR-FN7) slide motor trouble. Slide motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 08
Description:
Finisher (AR-FN6) staple shift motor trouble. Staple motor drive trouble
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check operations of the staple motor.
Code: F1 10
Description:
Finisher (AR-FN6) stapler motor trouble Detail Stapler motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 10
Description:
Console finisher (AR-FN7) stapler motor trouble. Stapler motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 11
Description:
Finisher (AR-FN6) bundle exit motor trouble. Bundle exit motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.

Code: F1 11
Description:
Console finisher (AR-FN7) bundle exit motor trouble. Bundle exit motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 12
Description:
Mail-bin stacker (AR-MS1) gate trouble. Gate operation abnormality
Causes:
Gate lock Mail-bin stacker control PWB trouble
Remedy:
Use DIAG (SIM3-21) to check the transport gate operation.
Code: F1 15
Description:
Finisher (AR-FN6) lift motor trouble. Lift motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 15
Description:
Console finisher (AR-FN7) lift motor trouble. Lift motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 19
Description:
Finisher (AR-FN6) front alignment motor trouble. Front alignment motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 19
Description:
Console finisher (AR-FN7) front alignment motor trouble. Front alignment motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 20
Description:
Finisher (AR-FN6) rear alignment motor trouble. Rear alignment motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 20
Description:
Console finisher (AR-FN7) rear alignment motor trouble. Rear alignment motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.

Code: F1 30
Description:
Console finisher (AR-FN7) communication trouble. Communication cable test error after turning on the power or exiting from DIAG. Communication error with the console finisher
Causes:
Improper connection or disconnection of connector and harness between the machine and the console finisher. Console finisher control PWB trouble Control PWB (PCU) trouble Malfunction by noises
Remedy:
Canceled by turning OFF/ON the power. Check connectors and harness in the communication line. Replace the console finisher control PWB or PCU PWB.
Code: F1 31
Description:
Console finisher (AR-FN7) fold sensor trouble. Sensor input value abnormality
Causes:
Sensor breakage harness breakage Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-2) to check the sensor operation.
Code: F1 32
Description:
Communication trouble between the console finisher (AR-FN7) and the punch unit (AR-PN1). Communication err between the console finisher and the punch unit.
Causes:
Improper connection or disconnection of connector and harness between the console finisher and the punch unit. Console finisher control PWB trouble Control PWB (PCU) trouble Malfunction by noise
Remedy:
Canceled by turning OFF/ON the power. Check connectors and harness in the communication line. Replace the console finisher control PWB.
Code: F1 33
Description:
Console finisher (AR-FN7) punch (AR-PN1) side registration motor trouble. Punch side registration motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 34
Description:
Console finisher (AR-FN7) punch (AR-PN1) motor trouble. Punch motor operation abnormality
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 35
Description:
Console finisher (AR-FN7) punch (AR-PN1) side registration sensor trouble. Sensor input value abnormality
Causes:
Sensor breakage Harness disconnection Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-2) to check the sensor operation.
Code: F1 36
Description:
Console finisher (AR-FN7) punch (AR-PN1) timing sensor trouble. Sensor input value abnormality
Causes:
Sensor breakage Harness disconnection Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-2) to check the sensor operation.
Code: F1 37
Description:
Console finisher (AR-FN7) backup RAM trouble. Backup RAM contents are disturbed.
Causes:
Console finisher control PWB trouble Malfunction by noise
Remedy:
Replace the console finisher control PWB.

Code: F1 38
Description:
Console finisher (AR-FN7) punch (AR-PN1) backup RAM trouble. Punch unit backup RAM contents are disturbed.
Causes:
Punch control PWB trouble Malfunction by noise
Remedy:
Replace the punch control PWB.
Code: F1 80
Description:
Finisher (AR-FN6) power abnormality. The 24V power is not supplied to the finisher PWB.
Causes:
Improper connection or disconnection of connector and harness Finisher control PWB trouble Power unit trouble
Remedy:
Use DIAG (SIM3-2) to check the sensor.
Code: F1 80
Description:
Mail-bin stacker (AR-MS1) power abnormality. The 24V power is not supplied to the Mail-bin stacker PWB.
Causes:
Improper connection or disconnection of connector and harness Mail-bin stacker control PWB trouble Power unit (AR-DC1) trouble
Remedy:
Use DIAG (SIM3-20) to check the sensor operation.
Code: F1 81
Description:
Console finisher transport motor abnormality. Transport motor trouble
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Console finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F1 87
Description:
Finisher (AR-FN6) staple rotation motor trouble. Front staple rotation motor trouble
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Finisher control PWB trouble
Remedy:
Use DIAG (SIM3-3) to check the motor operation.
Code: F2 00
Description:
Toner control sensor output open
Causes:
Connector harness trouble Connector disconnection
Remedy:
Check connection of the toner control sensor. Check connection of connector and harness to the main PWB. Check for disconnection of harness.
Code: F2 02
Description:
Toner supply abnormality. Toner control sensor output value becomes under-toner too earlier.
Causes:
Connector harness trouble Toner control sensor trouble The toner cartridge seal is not removed
Remedy:
Check connection of the connector in the toner motor section. Check connection of connector and harness to the main PWB. Check for disconnection of harness. Toner control sensor output check DIAG (SIM25-1) Remove the toner cartridge seal.
Code: F2 04
Description:
Improper cartridge (life cycle error, etc.). An improper process cartridge is inserted.
Causes:
IC chip trouble Improper cartridge
Remedy:
Insert a proper cartridge.

Code: F2 05
Description:
CRUM error. Communication with IC chip cannot be made.
Causes:
IC chip trouble Improper cartridge
Remedy:
Insert a proper cartridge.
Code: F2 39
Description:
Process thermistor open
Causes:
Process thermistor trouble Process thermistor harness disconnection PCU PWB trouble
Remedy:
Check connection of harness and connector of the process thermistor. Check PCU PWB.
Code: F3 12
Description:
Machine no. 1 tray lift-up trouble. PED does not turn ON in the specified time. LUD does not turn ON in the specified time.
Causes:
PED/LUD trouble No. 1 tray lift-up trouble Check connection of harness between the PCVU PWB, lift-up unit, and paper feed unit.
Remedy:
Check PED, LUD, and their harness and connectors. Check the lift-up unit.
Code: F3 22
Description:
Multi purpose tray lift-up trouble. MCPED does not turn ON in the specified time. MCLUD does not turn ON in the specified time.
Causes:
MCPED/MCLUD trouble Multi purpose tray lift-up motor trouble Harness disconnection f the PCU PWB, the lift-up unit, and the paper feed unit.
Remedy:
Check MCPED, PCLUD, and their harness and connectors. Check the lift-up unit.
Code: F9 02
Description:
PRT Centro port check error. Controller Centro port trouble
Causes:
Centro port trouble Controller PWB trouble
Remedy:
Replace the Controller PWB.
Code: F9 03
Description:
NIC port check error
Causes:
NIC port trouble NIC PWB trouble Controller PWB trouble
Remedy:
Replace the NIC PWB. Replace the Controller PWB.
Code: H2 00, H2 HL1
Description:
thermistor open Fusing unit not installed. Thermistor is open. (An input voltage of 2.92V or above is detected.) Fusing unit not installed
Causes:
Thermistor trouble Control PWB trouble Fusing section connector disconnection AC power trouble Fusing unit not installed
Remedy:
Check harnesses and connectors from the thermistor to the control PWB. Use DIAG (SIM14) to clear the self diag display.
Code: H2 01, H2 HL2
Description:
thermistor open Fusing unit not installed. Thermistor is open. (An input voltage of 2.92V or above is detected.) Fusing unit not installed
Causes:
Thermistor trouble Control PWB trouble Fusing section connector disconnection AC power trouble Fusing unit not installed
Remedy:
Check harnesses and connectors from the thermistor to the control PWB. Use DIAG (SIM14) to clear the self diag display.
Code: H3 00, H3 HL1
Description:
Fusing section high temperature trouble. The fusing temperature exceeds 242°C. (An input voltage of 0.27V or above is detected.)
Causes:
thermistor trouble Control PWB trouble Fusing section connector disconnection AC power trouble
Remedy:
Use DIAG (SIM5-2) to check the heater lamp Blinking operation. If the heater lamp blinks normally: Check the thermistor and its harness. Check the thermistor input circuit in the control PWB. If the heater lamp keep lighting: Check the AC PWB and the lamp control circuit in the control PWB. Use DIAG (SIM14) to cancel the trouble
Code: H3 01, H3 HL2
Description:
Fusing section high temperature trouble. The fusing temperature exceeds 242°C. (An input voltage of 0.27V or above is detected.)
Causes:
thermistor trouble Control PWB trouble Fusing section connector disconnection AC power trouble
Remedy:
Use DIAG (SIM5-2) to check the heater lamp Blinking operation. If the heater lamp blinks normally: Check the thermistor and its harness. Check the thermistor input circuit in the control PWB. If the heater lamp keep lighting: Check the AC PWB and the lamp control circuit in the control PWB. Use DIAG (SIM14) to cancel the trouble
Code: H4 00, H4HL1
Description:
Fusing section low temperature trouble. •The set temperature is not reached within the specified time (normally 3 min) when warming up or resetting from pre-heating. •Under the ready state. (An input voltage of 1.21V or below is detected 5 times continuously.)
Causes:
thermistor trouble Heater lamp trouble Control PWB trouble Thermostat trouble AC power trouble Interlock switch trouble
Remedy:
Use DIAG (SIM5-2) to check the heater lamp Blinking operation. If the heater lamp blinks normally: Check the thermistor and its harness. Check the thermistor input circuit in the control PWB. If the heater lamp does not light: Check for heater lamp disconnection and thermostat disconnection. Check the interlock switch. Check the AC PWB and the lamp control circuit in the control PWB. Use DIAG (SIM14) to cancel the trouble.
Code: H4 01, H4HL2
Description:
Fusing section low temperature trouble. •The set temperature is not reached within the specified time (normally 3 min) when warming up or resetting from pre-heating. •Under the ready state. (An input voltage of 1.21V or below is detected 5 times continuously.)
Causes:
thermistor trouble Heater lamp trouble Control PWB trouble Thermostat trouble AC power trouble Interlock switch trouble
Remedy:
Use DIAG (SIM5-2) to check the heater lamp Blinking operation. If the heater lamp blinks normally: Check the thermistor and its harness. Check the thermistor input circuit in the control PWB. If the heater lamp does not light: Check for heater lamp disconnection and thermostat disconnection. Check the interlock switch. Check the AC PWB and the lamp control circuit in the control PWB. Use DIAG (SIM14) to cancel the trouble.
Code: H5 01
Description:
5-time continuous POD1 not-reaching jam detection
Causes:
A fusing section jam is not properly removed. (Jam paper remains.) POD1 sensor trouble, or harness disconnection Improper installation of fusing unit
Remedy:
Check jam paper in the fusing section. (winding, etc.) Check POD1 sensor harness, and check installation the fusing unit. Use DIAG (SIM14) to cancel the trouble.
Code: L4 01
Description:
Main motor lock detection. The motor lock signal is detected for 1.5sec during rotation of the main motor.
Causes:
main motor trouble Check connection of harness between the PCU PWB and the main motor. Control circuit trouble
Remedy:
Use DIAG (SIM25-1) to check the main motor operation. Check harness and connector between the PCU PWB and the main motor.
Code: L4 02
Description:
Drum motor lock detection. The motor lock signal is detected for 1.5sec during rotation of the drum motor.
Causes:
Drum motor trouble Improper connection of harness between the PCU PWB and the drum motor. Control circuit trouble
Remedy:
Use DIAG (SIM25-1) to check the drum motor operation. Check harness and connector between the PCU PWB and the drum motor.
Code: L6 10
Description:
Polygon motor lock detection. It is judged that the polygon motor lock signal is not outputted. Lock signal is checked in the interval of 10sec after starting the polygon motor, and it is judged that the polygon motor does not rotate normally.
Causes:
The LSU connector or harness in the LSU is disconnected or broken. Polygon motor trouble
Remedy:
Use DIAG (SIM61-1) to check the polygon motor operation. Check connector and harness connection. Replace LSU.

Code: L8 01
Description:
No fullwave signal. Full wave signal is not detected.
Causes:
The PCU PWB connector or the power unit harness is disconnected or broken. PCU PWB trouble Power unit trouble
Remedy:
Check connection of the harness and connector. Replace PCU PWB. Replace the power unit.
Code: L8 02
Description:
Full wave signal width abnormality. It is judged as frequency abnormality of full wave signal. (When the detection cycle is judged as 69Hz or above or 42.5Hz or below)
Causes:
The connector or harness of the PCU PWB and the power PWB is disconnected. PCU PWB trouble Power unit trouble
Remedy:
Check connection of the harness and connector. Replace the PCU PWB. Replace the power unit.
Code: PF 00
Description:
RIC copy inhibit signal is received. Copy inhibit command from RIM (host) is received.
Causes:
Judged by the host.
Remedy:
Inform to the host.
Code: U1 01
Description:
Backup SRAM battery voltage fall
Causes:
Battery life Battery circuit abnormality
Remedy:
Check that the battery voltage is about 2.5V or above. Check the battery circuit.
Code: U2 00
Description:
EEPROM read/write error (Controller). EEPROM write error
Causes:
EEPROM trouble EEPROM is not initialized. Controller PWB EEPROM access circuit trouble
Remedy:
Check that EEPROM is properly inserted. Save the counter/adjustment values with the DIAG simulation. Use DIAG (SIM16) to cancel U2 trouble. Replace the Controller PWB.
Code: U2 11
Description:
Counter check sum error (Controller). Counter data area check sum error
Causes:
EEPROM trouble Control circuit trouble by noise Controller PWB EEPROM access circuit trouble
Remedy:
Check that EEPROM is properly inserted. Save the counter/adjustment values with the DIAG simulation. Use DIAG (SIM16) to cancel U2 trouble. Replace the Controller PWB.
Code: U2 12
Description:
Adjustment value check sum error (Controller)
Causes:
EEPROM trouble Control circuit trouble by noise Controller PWB EEPROM access circuit trouble
Remedy:
Check that EEPROM is properly inserted. Save the counter/adjustment values with the DIAG simulation. Use DIAG (SIM16) to cancel U2 trouble. Replace the Controller PWB.
Code: U2 90
Description:
PCU EEPROM write error
Causes:
EEPROM trouble EEPROM is not initialized. PCU PWB EEPROM access circuit trouble
Remedy:
Check that EEPROM is properly inserted. Save the counter/adjustment values with the DIAG simulation. Use DIAG (SIM16) to cancel U2 trouble. Replace the Controller PWB.

Code: U2 91
Description:
PCU memory check sum error
Causes:
EEPROM trouble EEPROM is not initialized. PCU PWB EEPROM access circuit trouble Uninitialized E2PROM installed.
Remedy:
Check that EEPROM is properly inserted. Save the counter/adjustment values with the DIAG simulation. Use DIAG (SIM16) to cancel U2 trouble. Replace the Controller PWB.
Code: U6 00
Description:
Desk/LCC communication error Communication cable test error after turning on the power or exiting DIAG.
Causes:
Improper connection or disconnection of connector and harness Desk control PWB trouble Control PWB (PCU) trouble Malfunction by noise
Remedy:
Canceled by turning OFF/ON the power. Check connection of the harness and connector in the communication line.
Code: U6 01
Description:
Desk/LCC No. 1 tray lift-up trouble
Causes:
Sensor trouble Desk control PWB trouble Gear breakage Lift-up motor trouble
Remedy:
Use DIAG (SIM4-2) to check the lift-up sensor detection. Use DIAG (SIM4-3) to check the lift-up motor operation.
Code: U6 02
Description:
Desk No. 2 tray/LCC lift-up trouble
Causes:
Sensor trouble Desk control PWB trouble Gear breakage Lift-up motor trouble
Remedy:
Use DIAG (SIM4-2) to check the lift-up sensor detection. Use DIAG (SIM4-3) to check the lift-up motor operation.
Code: U6 03
Description:
Desk no. 3 tray lift-up trouble
Causes:
Sensor trouble Desk control PWB trouble Gear breakage Lift-up motor trouble
Remedy:
Use DIAG (SIM4-2) to check the lift-up sensor detection. Use DIAG (SIM4-3) to check the lift-up motor operation.
Code: U6 10
Description:
Desk/LCC transport motor operation trouble
Causes:
Motor lock Motor rpm abnormality Overcurrent to the motor Desk control PWB trouble
Remedy:
Use DIAG (SIM4-3) to check the transport motor operation.
Code: U7 00
Description:
RIC communication trouble Communication cable test error after turning on the power or exiting DIAG.
Causes:
Disconnection of connector and harness RTC control PWB trouble Control PWB (Controller) trouble Malfunction by noise
Remedy:
Canceled by turning OFF/ON the power. Check connector and harness in the communication line.

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