Troubleshooting For Fuser Unit Problems; Fuser Unit Failure - Brother DCP-8110DN Service Manual

4.8

Troubleshooting for Fuser Unit Problems

4.8.1 Fuser unit failure

Step
Harness connection failure
1 between fuser unit and eject sensor
PCB
Harness connection failure
2 between fuser unit and low-voltage
power supply PCB
Connection failure of the eject
3
sensor PCB harness
Eject sensor PCB failure
4
Low-voltage power supply PCB
5
failure
6 Fuser unit failure
7 Main PCB failure
CAUTION:
• Turn the power switch OFF and then ON again. Leave the machine for ten minutes.
This problem may then be cleared.
Cause
Check the harness connection between the
fuser unit and the eject sensor PCB, and
reconnect it if necessary.
Check the harness connection between the
fuser unit and the low-voltage power supply
PCB, and reconnect it if necessary.
Check the connection of the eject sensor
harness, and reconnect it if necessary.
Refer to
(function code: 32)" in Chapter 5
the sensor operation. If the sensor operation
is faulty, replace the eject sensor PCB
ASSY.
Replace the low-voltage power supply PCB
ASSY.
Replace the fuser unit.
Replace the main PCB ASSY.
2-89
Remedy
"1.3.10 Check sensor operation
to check
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