Code: E1 00
Description:
Communication setup error, framing, parity, protocol error
Causes:
E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure
Remedy:
Check the connectors and harness of the E-Sort PWB and the MCU PWB. Check grounding of the machine. Check the ROM of the E-Sort PWB.
Code: E1 10
Description:
Communication trouble between MCU and E-Sort
Causes:
E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure
Remedy:
Check the connectors and harness of the E-Sort PWB and the MCU PWB. Check grounding of the machine. Check the ROM of the E-Sort PWB.
Code: E1 80
Description:
E-Sort PWB communication trouble (protocol). Communication trouble between MCU and printer PWB (Protocol error)
Causes:
E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure
Remedy:
Check the connectors and harness of the E-Sort PWB and the MCU PWB. Check grounding of the machine. Check the ROM of the E-Sort PWB.
Code: E1 81
Description:
E-Sort PWB communication trouble (Parity). Communication trouble between MCU and printer E-Sort (Parity error)
Causes:
E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure
Remedy:
Check the connectors and harness of the E-Sort PWB and the MCU PWB. Check grounding of the machine. Check the ROM of the E-Sort PWB.
Code: E1 82
Description:
E-Sort PWB communication trouble (Overrun). Communication trouble between MCU and E-Sort PWB (Overrun error)
Causes:
E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure
Remedy:
Check the connectors and harness of the E-Sort PWB and the MCU PWB. Check grounding of the machine. Check the ROM of the E-Sort PWB.
Code: E1 84
Description:
Communication trouble between MCU and E-Sort PWB (Framing error)
Causes:
E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure
Remedy:
Check the connectors and harness of the E-Sort PWB and the MCU PWB. Check grounding of the machine. Check the ROM of the E-Sort PWB.
Code: E1 88
Description:
Communication trouble between MCU and E-Sort PWB (Time-out error)
Causes:
E-Sort PWB connector disconnection E-Sort PWB MCU PWB harness failure E-Sort Motherboard connector pin breakage. E-Sort PWB ROM defect, data failure
Remedy:
Check the connectors and harness of the E-Sort PWB and the MCU PWB. Check grounding of the machine. Check the ROM of the E-Sort PWB.
Code: E11 11
Description:
E-Sort PWB ASIC abnormality
Causes:
An ASIC abnormality is detected in the E-Sort PWB. Control circuit hung up due to noises ASIC peripheral circuit error
Remedy:
Replace the E-Sort PWB. Check grounding of the machine.

Code: E11 12
Description:
E-Sort PWB CODEC error
Causes:
A CODEC error is detected in the E-Sort PWB. Control circuit hung up due to noises CODEC peripheral circuit error
Remedy:
Replace the E-Sort PWB. Check grounding of the machine.
Code: E11 13
Description:
E-Sort PWB Flash ROM abnormality
Causes:
A Flash ROM abnormality is detected in the E-Sort PWB. Control circuit hung up due to noises Flash ROM peripheral circuit error
Remedy:
Replace the E-Sort PWB. Rewrite the flash ROM data. Check grounding of the machine.
Code: E11 14
Description:
E-Sort PWB Work RAM abnormality
Causes:
A Work RAM abnormality is detected in the E-Sort PWB. Control circuit hung up due to noises RAM peripheral circuit error
Remedy:
Replace the E-Sort PWB. Check grounding of the machine.
Code: E11 15
Description:
E-Sort PWB Page Memory abnormality
Causes:
A Page Memory abnormality is detected in the E-Sort PWB. Control circuit hung up due to noises Page Memory peripheral circuit error
Remedy:
Replace the E-Sort PWB. Check grounding of the machine.
Code: E11 16
Description:
E-Sort PWB SIMM abnormality
Causes:
A SIMM abnormality is detected in the E-Sort PWB. Control circuit hung up due to noises SIMM peripheral circuit error
Remedy:
Replace the E-Sort PWB. Replace the SIMM. Check grounding of the machine.
Code: E11 17
Description:
E-Sort PWB image rotating RAM error
Causes:
A image rotating RAM abnormality is detected in the E-Sort PWB. Control circuit hung up due to noises Image rotating RAM peripheral circuit error
Remedy:
Replace the E-Sort PWB. Check grounding of the machine.
Code: E7 03
Description:
LSU trouble. After the polygon motor becomes active, BD signal (HSYNC) from the LSU is not detected at the specified times (41 ± 10 times within 20msec).
Causes:
LSU connector disconnection or LSU’s inside harness disconnection or breakage Polygon motor rotation abnormality Improper positioning of the laser home position sensor in the LSU. Laser power voltage failure Laser emitting diode abnormality MCU PWB abnormality
Remedy:
Improper connection of the LSU connector Check the polygon motor operation with SIM 25-10. Check printing with SIM64-1. Check laser emission of laser emitting diode. Check the LSU unit. Check the MCU PWB.
Code: E7 04
Description:
CCD white reference level which is read during the copy lamp lighting is abnormal.
Causes:
Flat cable installation failure to CCD unit Dirt on the mirror, lens, and reference white plate Copy lamp lighting failure CCD unit installation failure CCD unit abnormality MCU PWB abnormality
Remedy:
Clean the mirror, the lens, and the reference white plate. Check the copy lamp (SIM 5-3) ON. CCD unit check MCU PWB check

Code: E7 05
Description:
CCD black level which is read while the copy lamp is off is abnormal.
Causes:
Flat cable installation failure CCD unit abnormality MCU PWB abnormality
Remedy:
Check flat cable installation to the CCD unit. CCD unit check MCU PWB check
Code: F6 00
Description:
Communication trouble between MCU and FAX (MCU detection). Communication establishment error, framing error, parity error, protocol error
Causes:
Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB. Motherboard connector pin breakage FAX control PWB ROM error, data error
Remedy:
Check connector/harness of FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.
Code: F6 10
Description:
Communication trouble between MCU and FAX control WPB
Causes:
Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
Remedy:
Check connector/harness between FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.
Code: F6 80
Description:
Communication trouble between MCU and FAX control PWB (Protocol error)
Causes:
Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
Remedy:
Check connector/harness between FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.
Code: F6 81
Description:
Communication trouble between MCU and FAX control PWB (Parity error)
Causes:
Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
Remedy:
Check connector/harness between FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.
Code: F6 82
Description:
Communication trouble between MCU and FAX control PWB (Overrun error)
Causes:
Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
Remedy:
Check connector/harness between FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.
Code: F6 84
Description:
Communication trouble between MCU and FAX control PWB (Framing error)
Causes:
Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
Remedy:
Check connector/harness between FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.
Code: F6 88
Description:
Communication trouble between MCU and FAX control PWB (Timeout error)
Causes:
Bad connection of FAX control PWB connector Defective harness between FAX control PWB and MCU PWB Motherboard connector pin breakage FAX control PWB ROM error/Data error
Remedy:
Check connector/harness between FAX control PWB and MCU PWB. Check grounding of the machine. Check FAX control PWB ROM.

Code: F9 00
Description:
Communication trouble between MCU and printer PWB (MCU detection). Communication establishment error, framing error, parity error, protocol error
Causes:
Bad connection of printer PWB connector Defective harness between printer PWB and MCU PWB. Motherboard connector pin breakage Printer PWB ROM error, data error
Remedy:
Check connector/harness of printer PWB and MCU PWB. Check grounding of the machine. Check printer PWB ROM.
Code: F9 10
Description:
Communication trouble between MCU and printer PWB
Causes:
Bad connection of printer PWB connector Defective harness between printer PWB and MCU PWB. Motherboard connector pin breakage Printer PWB ROM error, data error
Remedy:
Check connector/harness of printer PWB and MCU PWB. Check grounding of the machine. Check printer PWB ROM.
Code: F9 80
Description:
Communication trouble between MCU and printer PWB (Protocol error)
Causes:
Bad connection of printer PWB connector Defective harness between printer PWB and MCU PWB. Motherboard connector pin breakage Printer PWB ROM error, data error
Remedy:
Check connector/harness of printer PWB and MCU PWB. Check grounding of the machine. Check printer PWB ROM.
Code: H2 00
Description:
Thermistor open detection. Fusing thermistor open
Causes:
Thermistor defect MCU PWB defect Fusing section connector contact failure Power failure Fusing unit not installed
Remedy:
Check the harness and the connector of the thermistor and the MCU. Clear the self diag display with SIM 14.
Code: H3 00
Description:
Heat roller abnormally high temperature Detail Fusing temperature of 220 - 240°C.
Causes:
Thermistor defect MCU PWB defect Fusing connector connection failure Power failure.
Remedy:
Check the heater lamp blinking with SIM 5-2. When the lamp blinks normally: Check the thermistor and the harness. Check the MCU PWB thermistor input circuit. When the lamp lights up instead of blinking: Check the lamp control circuit of the power PWB and the MCU PWB. Clear the trouble with SIM 14.
Code: H4 00
Description:
Heat roller abnormally low temperature. When the temperature does not reach 155°C within 55 sec after turning on the power, or when it falls under 145°C during printing, or when it falls under 100°C during pre-heating.
Causes:
Thermistor failure Heater lamp failure MCU PWB failure Thermostat failure Power failure Interlock switch failure
Remedy:
Check blinking of the heater lamp with SIM 5-2. When the lamp blinks normally: Check the thermistor and the harness. Check the MCU PWB thermistor input circuit. When the lamp does not light: Check for heater lamp disconnection or thermostat disconnection. Check the interlock switch. Check the power PWB and MCU PWB lamp control circuit. Clear the trouble with SIM 14.
Code: L1 00
Description:
Mirror base feed trouble. The mirror home position (MHPS) does not turn off though the feed operation is completed during mirror initial operation after turning on the power. The mirror home position (MHPS) does not turn off during shading operation. The mirror home position (MHPS) does not turn on when the mirror base is returned for the specified time after copy feed is started and SPF scanning position shift is performed.
Causes:
Mirror unit defect Mirror home position sensor defect MCU PWB defect Scanner wire disconnection
Remedy:
Check the scanning operation with SIM 1-1.
Code: L3 00
Description:
The mirror home position (MHPS) does not turn on though the mirror base returning is completed during mirror initial operation after turning on the power. The mirror home position does not turn on when the mirror is returned to the home position during shading. The mirror home position (MHPS) does not turn on when the mirror base returning is completed for the specified time (about 6 sec) after copy return start.
Causes:
Mirror unit Mirror home position sensor defect MCU PWB defect Scanner wire disconnection
Remedy:
Check the scanning operation with SIM 1-1.

Code: L4 01
Description:
Main motor lock. The main motor encoder pulse is not detected for 400msec.
Causes:
Main motor defect Harness disconnection between the MCU PWB and the main motor. Control circuit failure
Remedy:
Check the main motor operation with SIM 25-1. Check the harness and the connector between the MCU PWB and the main motor.
Code: L6 10
Description:
Polygon motor lock. The lock signal (the specified rotation speed signal) is not supplied within the specified time (about 6 sec)after starting the polygon motor rotation.
Causes:
LSU connector disconnection or harness disconnection in the LSU.
Remedy:
Check the operation of the polygon motor with SIM 25-10. Check the harness and the connector connection. LSU replacement
Code: L8 01
Description:
Zero cross pulse width is shifted by 55Hz ± 10% or more.
Causes:
MCU PWB defect Power unit breakdown
Remedy:
Check the harness and the connector. MCU PWB replacement Power unit replacement
Code: U2 04
Description:
Error in communication with EEPROM
Causes:
EEPROM failure Installation of uninitialized EEPROM MCU PWB EERPOM access circuit failure
Remedy:
Check that the EEPROM is properly set. To prevent against loss of counter/adjustment values, record the values with simulation. U2 trouble cancel with SIM 16 MCU PWB replacement
Code: U2 11
Description:
Counter check sum error. Counter check sum value stored in the EEPROM is abnormal.
Causes:
EEPROM failure Control circuit hung up by noises MCU PWB EEPROM access circuit defect
Remedy:
Check that the EEPROM is properly set. To prevent against loss of counter/adjustment values, record the values with simulation. U2 trouble cancel with SIM 16 MCU PWB replacement
Code: U2 12
Description:
Adjustment value check sum error (EEPROM). Adjustment value data area check sum error
Causes:
EEPROM failure Control circuit hung up by noises MCU PWB EEPROM access circuit failure
Remedy:
Check that the EEPROM is properly set. To prevent against loss of counter/adjustment values, record the values with simulation. U2 trouble cancel with SIM 16 MCU PWB replacement
Code: U3 29
Description:
Home position is not detected when starting mirror base shift.
Causes:
Mirror unit defect Mirror home position sensor defect MCU PWB decfect Scanner wire disconnection
Remedy:
Check the scanning operation with SIM 1-1.
Code: U9 00
Description:
Communication trouble between MCU and OPE (OPE detection). Communication setup error, framing, parity, protocol error
Causes:
Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
Remedy:
Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine. Check the ROM of the operation control PWB.

Code: U9 80
Description:
Communication trouble between MCU and the operation control PWB (Protocol error)
Causes:
Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
Remedy:
Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine.
Code: U9 81
Description:
Communication trouble between MCU and the operation control PWB (Parity error)
Causes:
Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
Remedy:
Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine.
Code: U9 82
Description:
Communication trouble between MCU and the operation control PWB (Overrun error)
Causes:
Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
Remedy:
Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine.
Code: U9 84
Description:
Communication trouble between MCU and the operation control PWB (Framing error)
Causes:
Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
Remedy:
Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine.
Code: U9 88
Description:
Communication trouble between MCU and the operation PWB (Time-out error)
Causes:
Operation control PWB connector disconnection Operation control PWB MCU PWB harness failure
Remedy:
Check the connectors and harness of the operation control PWB and the MCU PWB. Check grounding of the machine.