Troubleshooting For Fuser Unit Problems; Fuser Unit Failure; Troubleshooting For Laser Unit Problems; Laser Unit Failure - Brother DCP-1510 Service Manual

4.8

Troubleshooting for Fuser Unit Problems

4.8.1 Fuser unit failure

Step
Connection failure of the center
1
thermistor harness of the fuser unit
Connection failure of the low
2
voltage PCB harness
Connection failure of the heater
3
harness of the fuser unit
Low voltage power supply PCB
4
failure
5 Fuser unit failure
6 Main PCB failure
Note:
• Turn the power switch OFF and then back ON again. Leave the machine for
approximately 15 minutes to cool the heater. This problem may have then been solved.
4.9

Troubleshooting for Laser Unit Problems

4.9.1 Laser unit failure

<User Check>
- Turn ON the power switch, then open the top cover. Leave the machine for a while to
remove condensation.
Step
Connection failure of the laser unit
1
flat cable
Connection failure of the polygon
2
motor harness
3 Laser unit failure
4 Main PCB failure
Cause
Reconnect the center thermistor harness of
the fuser unit.
Reconnect the low voltage PCB harness.
Reconnect the heater harness of the fuser
unit.
Replace the low voltage power supply PCB
unit.
Replace the fuser unit.
Replace the main PCB ASSY.
Cause
Reconnect the laser unit flat cable.
Reconnect the polygon motor harness.
Replace the laser unit.
Replace the main PCB ASSY.
1-62
Remedy
Remedy
Confidential