4-5
50:Shift unit error (MFX-3595 only)
Detail code:
1: The shift unit does not return to the home position.
2: The shift unit does not move from the home position.
Suggested corrective action:
Detail code 1
1. Check the connection between then shift sensor (HP sensor) and the main control board.
2. Check the connection between then shift motor and the main control board.
3. Replace the shift sensor (HP sensor).
4. Replace the shift motor.
Detail code 2
1. Check the connection between then shift motor and the main control board.
2. Check the connection between then shift sensor (HP sensor) and the main control board.
3. Replace the shift motor.
4. Replace the shift sensor (HP sensor).
51: EEPROM error (Drum cartridge)
Causes:
The machine could not write or read the EEPROM of drum cartridge.
Suggested corrective action:
1. Pull out the drum cartridge and check that springs touching the EEPROM of drum cartridge is not de-
formed.
2. Take the drum cartridge out the machine, and then restore it.
3. Check the connection between PCB TAG toner and the main control board.
4. Replace the drum cartridge.
5. Replace the main control board.
52: EEPROM error (Toner cartridge)
Causes:
The machine could not write or read the EEPROM of toner cartridge.
Suggested corrective action:
1. Pull out the toner cartridge and check that springs touching the EEPROM of toner cartridge is not de-
formed.
2. Take the toner cartridge out the machine, and then restore it.
3. Check the connection between PCB TAG toner and the main control board.
4. Replace the toner cartridge.
5. Replace the main control board.
6. Replace the TP Assy.
53: TP motor error
Causes:
Toner is not supplied when TP motor is driving.
Suggested corrective action:
1. Turn the power off and leave the machine for about ten minutes.
2. Shake the toner cartridge.
3. Check the connection between TP Assy and the main control board.
4. Replace the toner cartridge.
5. Replace the TP Assy.
6. Replace the main control board.
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