Brother HL-L8250CDN Service Manual page 76

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Error code 6001
Cover is Open
Close the Front Cover.
The front cover sensor detected that the front cover was open.
< User Check >
- Close the front cover.
Step
1 Connection failure of the front
cover sensor harness
2 Front cover failure
3 Front cover sensor failure
4 Main PCB failure
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Error code 6004
Cover is Open
Close the Fuser Cover which can be found behind the Back Cover of the
machine.
The eject sensor detected that the fuser cover was open.
< User Check >
- Close the fuser cover.
Step
1 Eject actuator that has come off
or that has been caught
2 Fuser cover installation failure
3 Connection failure of the eject
sensor PCB harness
4 Eject sensor PCB failure
5 Main PCB failure
Cause
Cause
2-53
Remedy
Reconnect the front cover sensor
harness.
Replace the front cover.
Replace the front cover sensor.
Replace the main PCB ASSY.
Remedy
Re-assemble the eject actuator.
Re-assemble the fuser cover.
Reconnect the eject sensor PCB harness.
Replace the eject sensor PCB ASSY.
Replace the main PCB ASSY.
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