Brother DCP1610W

Troubleshooting for Fuser Unit Problems

Fuser unit failure

Step	Cause	Remedy
1	Connection failure of the center thermistor harness of the fuser unit	Reconnect the center thermistor harness of the fuser unit.
2	Connection failure of the side thermistor harness	Reconnect the side thermistor harness.
3	Connection failure of the low voltage PCB harness	Reconnect the low voltage PCB harness.
4	Connection failure of the heater harness of the fuser unit	Reconnect the heater harness of the fuser unit.
5	Low voltage power supply PCB failure	Replace the low voltage power supply PCB unit.
6	Fuser unit failure	Replace the fuser unit.
7	Main PCB failure	Replace the main PCB ASSY.

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.

Troubleshooting for Laser Unit Problems

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	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.