Brother MFC-8540DN Service Manual

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Confidential
 Error code 6001
The front cover sensor detected that the front cover was open.
 Error code 6004
The eject sensor detected that the fuser cover was open.
 Error code 6101
The toner amount detection sensor detected that the toner cartridge was not set.
<User Check>
• Close the front cover.
Step Cause Remedy
1
Connection failure of the front
cover sensor harness
Reconnect the front cover sensor harness.
2
Connection failure of the relay
front harness
Reconnect the relay front harness.
3
Front cover sensor attachment
failure
Reattach the front cover sensor.
4 Front cover failure Replace the front cover.
5 Front cover sensor failure Replace the relay front PCB ASSY.
6 Relay front PCB failure Replace the relay front PCB ASSY.
7 Main PCB failure Replace the main PCB ASSY.
<User Check>
• Close the fuser cover.
Step Cause Remedy
1
Eject actuator coming off or
caught in some sections of the
machine
Reattach the eject actuator.
2 Fuser cover attachment failure Reattach the fuser cover.
3
Connection failure of the eject
sensor harness
Reconnect the eject sensor harness.
4 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
5 Main PCB failure Replace the main PCB ASSY.
<User Check>
• Set the toner cartridge correctly.
Step Cause Remedy
1
Toner amount detection sensor
PCB (light reception) failure
Replace the toner amount detection sensor
PCB ASSY (light reception).
2 Relay front PCB failure Replace the relay front PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.

Brother MFC-8540DN Specifications

General

Brand	Brother
Model	MFC-8540DN
Category	All in One Printer
Language	English