2-121
Confidential
4.8 Troubleshooting for Fuser Unit Problems
4.8.1 Fuser unit failure
4.9 Troubleshooting for Laser Unit Problems
4.9.1 Laser unit failure
Step Cause Remedy
1 Connection failure of the
center thermistor harness
Reconnect the center thermistor harness.
2 Connection failure of the side
thermistor harness
Reconnect the side thermistor harness.
3 Connection failure of the
heater harness
Reconnect the heater harness.
4 Connection failure of the eject
sensor PCB harness
Reconnect the eject sensor PCB harness.
5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
6 Low-voltage power supply
PCB failure
Replace the low-voltage power supply PCB
unit.
7 Fuser unit failure Replace the fuser unit.
8 Main PCB failure Replace the main PCB ASSY.
Note:
- Turn the power OFF and then ON again. After the machine is left as it is for about 10
minutes, this problem may be resolved.
- If test print is performed in maintenance mode for service personnel, the machine may
recover from the error. However, note that if this operation is performed while the heater
has not cooled down, the fuser unit may melt.
Step Cause Remedy
1 Connection failure of the laser
unit flat cable
Reconnect the laser unit flat cable.
2 Connection failure of the
polygon motor harness
Reconnect the polygon motor harness.
3 Laser unit failure Replace the laser unit.
4 Main PCB failure Replace the main PCB ASSY.
To Next Page
Loading...
Need help?
General
Weight and Dimensions
