Code: E1-00
Description:
IMC PWB communication trouble
An abnormality occurs in communication between the MCU PWB and the IMC PWB.
Causes:
IMC PWB-MCU PWB harness abnormality.
MCU PWB connector disconnection.
IMC PWB ROM defect/data abnormality
Remedy:
Check connection of the connector and the harness between the IMC PWB and the MCU PWB. Check the ROM of the IMC PWB.
Code: E1-10
Description:
IMC PWB trouble
An abnormality occurs in the IMC PWB.
Causes:
USB chip error/CODEC error on the IMC PWB.
Remedy:
Replace the IMC PWB with a new one.
Code: E1-11
Description:
IMC ASIC error
An abnormality occurs in the IMC PWB.
Causes:
Abnormality in ASIC on the IMC PWB.
Remedy:
Replace the IMC PWB with a new one.
Code: E1-13
Description:
IMC PWB flash ROM error
An abnormality occurs in the IMC flash ROM.
Causes:
IMC PWB abnormality.
Remedy:
Replace the IMC PWB with a new one. If downloading of the program is abnormally terminated, it may cause an error. Download the program again to avoid this.
Code: E1-16
Description:
IMC PWB DIMM memory read/write check error
An installation error occurs in the IMC expansion compression memory module.
An error occurs during access to the IMC expansion compression memory.
Causes:
Improper installation of the IMC expansion memory module.
IMC expansion memory module abnormality.
IMC expansion memory contact abnormality.
IMC PWB abnormality.
Remedy:
Check installation of the expansion memory module. Replace the expansion memory module. Replace the IMC PWB with a new one.
Code: E1-81
Description:
Interface error in communication with IMC PWB (Parity)
A parity error occurs in communication between the MCU PWB and the IMC PWB
Causes:
IMC PWB-MCU PWB harness defect.
Improper connection of the MCU PWB connector.
IMC PWB ROM defect/data abnormality.
Remedy:
Check connection of the connector/harness between the IMC PWB and the MCU PWB. Check the ROM of the IMC PWB.
Code: E1-82
Description:
Interface error in communication with IMC PWB (Overrun)
An overrun error occurs in communication between the MCU PWB and the IMC PWB.
Causes:
IMC PWB-MCU PWB harness defect.
Improper connection of the MCU PWB connector.
IMC PWB ROM defect/data abnormality.
Remedy:
Check connection of the connector/harness between the IMC PWB and the MCU PWB. Check the ROM of the IMC PWB.
Code: E1-84
Description:
Interface error in communication with IMC PWB (Framing)
A framing error occurs in communication between the MCU PWB and the IMC PWB.
Causes:
IMC PWB-MCU PWB harness defect
Improper connection of the MCU PWB connector.
IMC PWB ROM defect/data abnormality.
Remedy:
Check connection of the connector/harness between the IMC PWB and the MCU PWB. Check the ROM of the IMC PWB.

Code: E7-01
Description:
Duplex model memory error
The memory capacity for the duplex model machine is improper. Insufficient memory capacity.
Causes:
The memory capacity of the MCU PWB is improper.
Remedy:
Use SIM 26-39 to check that the memory capacity is 32MB. If it is not 32MB, replace the MCU PWB with a suitable one.
Code: E7-02
Description:
LSU trouble
The BD signal from the LSU cannot be detected in a certain cycle. (Always OFF or always ON)
Causes:
LSU connector or LSU harness defect or disconnection.
Polygon motor rotation abnormality.
Laser beams are not generated.
MCU PWB abnormality.
Remedy:
Check connection of the LSU connector. Execute SIM 61-03 to check the LSU operations. Check that the polygon motor rotates normally. Check that the laser emitting diode generates laser beams. Replace the LSU unit. Replace the MCU PWB.
Code: E7-10
Description:
Shading trouble (Black correction)
The CCD black scan level is abnormal when the shading
Causes:
Improper connection of the CCD unit flat cable
CCD unit abnormality.
MCU PWB abnormality.
Remedy:
Check connection of the CCD unit flat cable. Check the CCD unit.
Code: E7-11
Description:
Shading trouble (White correction)
The CCD white scan level is abnormal when the shading.
Causes:
Improper connection of the CCD unit flat cable
Dirt on the mirror, the lens, and the reference white plate.
Copy lamp lighting abnormality.
CCD unit abnormality.
MCU PWB abnormality(When occurred in the SPF scan position).
Improper installation of the mirror unit.
Remedy:
Clean the mirror, lens, and the reference white plate. Check the light quantity and lighting status of the copy lamp (SIM 05-03). Check the MCU PWB.
Code: E7-12
Description:
Shading trouble
White correction is not completed in the specified number of operations.
Causes:
CCD unit flat cable connection failure.
Dirt on mirrors, lenses, and the reference white plate.
Copy lamp lighting abnormality.
CCD unit abnormality.
MCU PWB abnormality .
Remedy:
Clean mirrors, lenses, and the reference white plate. Check the copy lamp light quantity (SIM 05-03) and lighting. Check the CCD unit. Check the MCU PWB.
Code: E7-16
Description:
Abnormal laser output
When the laser output is stopped, HSYNC is detected.
Causes:
Laser abnormality.
MCU PWB abnormality.
Remedy:
Check the laser emitting diode operation. Replace the MCU PWB.
Code: F2-02
Description:
Toner supply abnormality
When toner near end is detected with the toner supply time of 50% or less When the toner supply time exceeds 300%..
Causes:
ATC sensor abnormality
Toner supply abnormality
Remedy:
Replace the toner cartridge. Replace the developing unit.
Code: F2-04
Description:
Improper cartridge (destination error, life cycle error)
The destination of the machine differs from that of the CRUM. The life cycle information is other than "Not used (FFh)".
Causes:
CRUM chip defect.
Improper developing unit .
Remedy:
Check and remedy Replace the CRUM chip. Replace the developing unit. Identification error The trade mark code of the CRUM differs. The company code of the CRUM differs. Model error The boot program model code does not coincide with the CRUM model code. Type error When the CRUM type is other than genuine/conversion/production rotation. Destination error The machine destination differs from the CRUM destination. Data abnormality When an error value is included in the initial check information. When the max. toner supply time is 00. When the print hard stop is 00. Misc error When the Misc information is other than "Not used (FFh)".

Code: F2-40
Description:
ATC sensor abnormality
ATC sensor value abnormality
Causes:
Connector connection trouble
Toner cartridge installation trouble
Sensor breakdown
Remedy:
Connect the connector again. Install the developing unit again. Replace the developing unit with a normal one.
Code: F5-02
Description:
Copy lamp lighting abnormality
The copy lamp does not turn on.
Causes:
Copy lamp abnormality.
Copy lamp harness abnormality.
CCD PWB harness abnormality.
Remedy:
Use SIM 5-3 to check the copy lamp operations. When the copy lamp lights up. Check the harness and the connector between the CCD unit and the MCU PWB. When the copy lamp does not light up. Check the harness and the connector between the copy lamp unit and the MCU PWB. Replace the copy lamp unit. Replace the MCU PWB.
Code: F6-00
Description:
FAX board communication trouble
FAX board communication error.
Causes:
No command can be sent from the MCU to the FAX.
Remedy:
Check connection of the FAX board. Replace the FAX board.
Code: F6-10
Description:
FAX board trouble
FAX board abnormality detection.
Causes:
FAX controller and FAX board memory abnormality.
Remedy:
Replace the FAX board.
Code: F6-80
Description:
FAX board communication trouble (Protocol)
A break error occurs in communication between the MCU and the FAX board.
Causes:
MCU PWB connector connection failure/ Garbled data.
Remedy:
Check connection of the FAX board. Replace the FAX board. Reset the machine (Power OFF/ON).
Code: F6-81
Description:
FAX board communication trouble (Parity)
A parity error occurs in communication. between the MCU and the FAX board.
Causes:
MCU PWB connector connection failure/ Garbled data.
Remedy:
Check connection of the FAX board. Replace the FAX board. Reset the machine (Power OFF/ON).
Code: F6-82
Description:
FAX board communication trouble (Overrun)
An overrun error occurs in communication between the MCU and the FAX board.
Causes:
MCU PWB connector connection failure/ Garbled data
Remedy:
Check connection of the FAX board. Replace the FAX board. Reset the machine. (Power OFF/ON).
Code: F6-84
Description:
FAX board communication trouble (Framing)
A framing error occurs in communication between the MCU and the FAX board.
Causes:
MCU PWB connector connection failure/ Garbled data.
Remedy:
Check connection of the FAX board. Replace the FAX board. Reset the machine (Power OFF/ON).

Code: F6-88
Description:
FAX board communication trouble (Time out)
FAX board communication error.
Causes:
There is no respond command from the FAX for 30sec or more.
Remedy:
Check connection of the FAX board. Replace the FAX board. Reset the machine (Power OFF/ON).
Code: F6-97
Description:
Combination error between the FAX unit and the main unit
Combination error between the FAX unit and the main unit
Causes:
When this fax unit is installed to the machine that can not install this.
Remedy:
Check the model name of the main unit
Code: F6-99
Description:
Machine - FAX language error
Discrepancy of the destination of the machine and the FAX board.
Causes:
The destination of the machine differs from that of the FAX board.
When installing to the machine that can install only AR-FX11.
Remedy:
Change the destination setting with SIM26-6. Replace the FAX board with one which. conforms to the destination of the machine.
Code: F9-00
Description:
MX-NB10 communication trouble
MX-NB10 print data reception error.
Causes:
Print data cannot be received from the MX-NB10 for 3 min or more.
Remedy:
Reset the machine (Power OFF/ON).
Code: H2-00
Description:
Thermistor open
The thermistor is open. The fusing unit is not installed.
Causes:
Thermistor abnormality.
Control PWB abnormality.
Fusing section connector disconnection.
The fusing unit is not installed.
Remedy:
Check the harness and the connector between the thermistor and the PWB. Use SIM 14 to clear the self diagnostic display.
Code: H3-00
Description:
Heat roller high temperature detection
The fusing temperature exceeds 240C°.
Causes:
Thermistor abnormality.
Control PWB abnormality.
Fusing section connector disconnection.
Remedy:
Use SIM 5-02 to check the heater lamp blinking operation. When the lamp blinks normally. Check the thermistor and its harness. Check the thermistor input circuit on the control PWB. When the lamp keeps ON. Check the power PWB and the lamp control circuit on the MCU PWB. Use SIM 14 to clear the self diagnostic display.
Code: H4-00
Description:
Heat roller low temperature detection
When the fusing temperature is lower than 150C° after 55sec from the start of warming up.
When the warming up complete temperature is not reached in 30sec from reaching 150C°.
When the fusing temperature is lower than 100C° after 20sec from ready start.
When the fusing temperature is lower than 145C° when printing.
Causes:
Thermistor abnormality.
Heater lamp abnormality.
Thermostat abnormality.
Control PWB abnormality.
Remedy:
Use SIM 5-02 to check the heater lamp blinking operation. When the lamp blinks normally. Check the thermistor and its harness. Check the thermistor input circuit on the control PWB. When the lamp does not light up. Check for disconnection of the heater lamp and the thermostat. Check the interlock switch. Check the power PWB and the lamp control circuit on the MCU PWB. Use SIM 14 to clear the self diagnostic display.
Code: H5-01
Description:
5-time continuous detections of POUT not-reached jam
Paper not-reached jams are detected 5 times or more continuously by the paper exit sensor (POUT). The jam counter is backed up and used for jobs after turning on the power.
Causes:
A fusing jam is not canceled completely. (A jam paper remains in the machine.)
Paper exit sensor trouble or harness connection trouble
Defective installation of the fusing unit.
Remedy:
Check the fusing section jam (for winding, etc.). Check the POUT sensor harness. Check installation of the fusing unit. Use SIM14 to clear the self diag display.

Code: L1-00
Description:
Scanner feed trouble
The scanner does not complete feeding in the specified time.
Causes:
Mirror unit abnormality.
The scanner wire is disconnected.
The origin detection sensor abnormality.
Mirror motor harness abnormality.
Remedy:
Use SIM 1-1 to check the mirror reciprocating operations. When the mirror does not feed. Check for disconnection of the scanner wire. Check the harness and the connector between the mirror motor and the MCU PWB. Replace the mirror unit. Replace the MCU PWB. When the mirror does feed. Use SIM 1-2 to check the mirror home position sensor.
Code: L3-00
Description:
Scanner return trouble
The scanner does not complete returning in the specified time.
The mirror is not in the home position when OC copying is started with the mirror standby in the home position.
Causes:
Mirror unit abnormality.
Scanner wire disconnection.
Origin detection sensor abnormality.
Mirror motor harness abnormality.
Remedy:
Use SIM 1-1 to check the mirror reciprocating operations. When the mirror does not return. Check for disconnection of the scanner wire. Check the harness and the connector between the mirror motor and the MCU PWB. Replace the mirror unit. Replace the MCU PWB. When the mirror does feed. Use SIM 1-2 to check the mirror home position sensor.
Code: L4-01
Description:
Main motor lock detection
The main motor does not rotate.
The motor lock signal is detected for 1sec or more after rotation of the main motor.
The motor lock signal is detected for 1sec during rotation of the main motor.
Causes:
Main motor unit abnormality.
Improper connection or disconnection the main motor and the harness.
MCU PWB abnormality.
Remedy:
Use SIM 25-01 to check the main motor operations. Check connection of the main motor harness/connector. Replace the main motor. Replace the MCU PWB.
Code: L4-11
Description:
Shifter motor trouble
The shifter home position detection signal is not detected when initializing the shifter.
Causes:
Shifter motor abnormality, improper connection or disconnection of the harness, shifter home position sensor abnormality.
Remedy:
Use SIM 03-11 to check the shifter motor operations. Check connection of the harness/connector of the shifter motor. Replace the shifter motor. Replace the MCU PWB.
Code: L6-10
Description:
Polygon motor lock detection
The polygon motor does not rotate.
The motor lock signal is detected for 6sec after rotation of the polygon motor. The motor lock signal is detected for 1sec during rotation of the polygon motor.
Causes:
Polygon motor unit abnormality
Improper connection or disconnection of the polygon motor and the harness.
MCU PWB abnormality.
Remedy:
Use SIM 61-1 to check the polygon motor operations. Check connection of the polygon motor harness/connector. Replace the polygon motor. Replace the MCU PWB.
Code: L8-01
Description:
No full wave signal
The zero cross signal is not detected.
Causes:
Power unit abnormality.
MCU PWB abnormality.
Remedy:
Check connection of the harness and connectors. Replace the MCU PWB. Replace the power unit.
Code: U1-03
Description:
FAX board battery error
FAX board backup battery error.
Causes:
The voltage of the backup battery of SRAM which is installed to the FAX board falls below a certain level.
Remedy:
Replace the battery.
Code: U2-04
Description:
EEPROM read/write error (serial communication error)
EEPROM access process error.
Causes:
EEPROM abnormality.
Remedy:
Check that the EEPROM is properly set. Use SIM 16 to cancel the trouble. Replace the MCU PWB.
Code: U2-11
Description:
Counter check sum error (EEPROM)
Check sum error of the counter area in the EEPROM.
Causes:
EEPROM abnormality.
Remedy:
Check that the EEPROM is properly set. Use SIM 16 to cancel the trouble. Replace the MCU PWB.
Code: U2-40
Description:
CRUM chip communication error
An error occurs during communication between the MCU and the CRUM chip.
Causes:
CRUM chip abnormality.
Developing unit disconnection.
MCU PWB abnormality.
Remedy:
Replace the chip. Check installation of the developing unit. Use SIM 16 to cancel the trouble. Replace the MCU PWB.
Code: U9-00
Description:
Panel board communication trouble
Communication trouble with the panel board.
Causes:
No command can be sent from the MCU to the panel.
Remedy:
MCU PWB - Panel PWB harness trouble. Replace the panel or the MCU PWB. Machine reset (Power OFF/ON).
Code: U9-80
Description:
Panel board communication trouble (Protocol)
An error occurs in communication between MCU -Panel PWB.
Causes:
MCU PWB - Panel PWB harness trouble/ Garbled data.
Remedy:
MCU PWB - Panel PWB harness trouble. Replace the panel or the MCU PWB. Machine reset (Power OFF/ON).
Code: U9-81
Description:
Panel board communication trouble (Parity)
A parity error occurs in communication between the MCU and the Panel PWB.
Causes:
MCU PWB - Panel PWB harness trouble/ Garbled data.
Remedy:
MCU PWB - Panel PWB harness trouble. Replace the panel or the MCU PWB. Machine reset (Power OFF/ON).
Code: U9-82
Description:
Panel board communication trouble (Overrun)
An overrun error occurs in communication between the MCU and the panel board.
Causes:
MCU PWB - Panel PWB harness trouble/ Garbled data.
Remedy:
MCU PWB - Panel PWB harness trouble. Replace the panel or the MCU PWB. Machine reset (Power OFF/ON).
Code: U9-84
Description:
Panel board communication trouble (Framing)
A framing error occurs in communication between the MCU and the Panel PWB.
Causes:
MCU PWB - Panel PWB harness trouble/ Garbled data.
Remedy:
MCU PWB - Panel PWB harness trouble. Replace the panel or the MCU PWB. Machine reset (Power OFF/ON).
Code: U9-88
Description:
Panel board communication trouble (Time out)
A time-out error occurs in communication between the MCU and the Panel PWB.
Causes:
A command is completely sent from the MCU to the panel.
Remedy:
MCU PWB - Panel PWB harness trouble. Replace the panel or the MCU PWB. Machine reset (Power OFF/ON).

Code: U9-99
Description:
Panel language error
Language discrepancy error.
Causes:
Discrepancy between the machine language and the panel language.
Remedy:
Replace the panel or the MCU PWB. Reset the machine. (Power OFF/ON).