Main Motor Failure; Front Cover Open; Back Cover Open - Brother HL-2250DN Service Manual

4.9.3 Main motor failure

Step
FFC connection failure of the main
1
motor
2 Main motor failure
Low voltage power supply PCB
3
ASSY failure
4 Main PCB failure

4.9.4 Front cover open

Front cover opened
User Check
• Check if the front cover is closed certainly.
Step
Harness connection failure of high
voltage power supply PCB ASSY
1 (Front cover sensor is mounted in
high voltage power supply PCB
ASSY.)
Part pressing the front cover sensor
2 is broken, which is provided at
inside of front cover
Front cover sensor failure
3
4 Main PCB failure

4.9.5 Back cover open

Back cover opened
User Check
• Check if the back cover is closed certainly.
• Install the duplex tray certainly.
Step
Harness connection failure of paper
1 eject sensor PCB ASSY
Part pressing the back cover sensor
2 is broken, which is provided at
inside of back cover
Part pressing the back cover sensor
3 is broken, which is provided at
inside of duplex tray
Back cover sensor failure
4
5 Main PCB failure
Cause
Cause
Cause
2-47
Remedy
Check the FFC connection of the main
motor, and reconnect it.
Replace the main motor.
Replace the low voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
Remedy
Check the harness connection of the high
voltage power supply PCB ASSY, and
reconnect it.
Replace the front cover ASSY.
Check the registration front sensor and
registration rear sensor performance
following the procedure in
Check of Sensors" (Chapter 5).
If any problem occurs, replace the high
voltage power supply PCB ASSY.
Replace the main PCB ASSY.
Remedy
Check the harness connection of the
paper eject sensor PCB ASSY, and
reconnect it.
Replace the back cover ASSY.
Replace the duplex tray.
Replace the paper eject sensor PCB
ASSY.
Replace the main PCB ASSY.
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