Remedy: Either EEPROM or Flash ROM cannot read/write normally. Turn the printer power off and then back on. If the error symptom remains unchanged, replace the CU board.
Code: 104
Display: Service call 104: Error
Description: Read/write error of the engine EEPROM is detected.
Remedy: Does this error recur? Yes Turn off the power of the printer and back on. Replace the PU board.
Code: 106
Display: Service call 106: Error
Description: Engine control logic has an error.
Remedy: Does this error recur? Yes Turn off the power of the printer and back on. Replace the PU board.
Code: 111
Display: Service call 111: Error
Description: Duplex unit for other model is detected.
Remedy: Is the duplex unit for that specific model installed? No Install the correct duplex unit.
Code: 112
Display: Service call 112: Error
Description: 2nd tray for other model is detected.
Remedy: Is the 2nd tray for that specific model installed? No Install the correct 2nd tray.
Code: 121
Display: Service call 121: Error
Description: High voltage power supply interface error.
Remedy: Is the cable connecting the PU board to the high voltage unit connected normally? Have you checked defective contact of contactor points? Re-connect them normally. Check for defective contact of the high voltage system. Replace the high voltage power supply.
Code: 122
Display: Service call 122: Error
Description: Low voltage power supply fan error
Remedy: Is the fan (bottom right of the front) of the low voltage power supply block working? Is the fan connector connected normally? Check for sure connection of the fan connector. Replace the PU board. Replace the fan motor. Replace the PU board.
Code: 123
Display: Service call 123: Error
Description: Environment humidity is abnormal./ Humidity sensor is not connected.
Remedy: Does this error recur? Yes Turn off the power of the printer and back on. Replace the control panel board.