Relay front PCB failure
Toner sensor failure
Laser unit failure
Main PCB failure
- Check that the machine is installed on a level surface.
- Replace the toner cartridge with a new one.
- Replace the drum unit with a new one.
Replace the relay front PCB ASSY.
"1.3.8 Check sensor operation
(function code: 32)" in Chapter 5
the sensor operation. If the sensor
operation is faulty, replace the toner sensor
Replace the laser unit.
Replace the main PCB ASSY.