Brother HL-3160CDW Service Manual page 80

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Error code 6004
The eject sensor detected that the fuser cover was open.
<User Check>
• Close the fuser cover.
Step
Eject actuator coming off or
1 caught in some sections of the
machine
2 Fuser cover attachment failure
Connection failure of the eject
3
sensor harness
4 Eject sensor PCB failure
5 Main PCB failure
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Error code 6101
Developing terminal voltage detected that the toner cartridge (black) was not installed.
Error code 6102
Developing terminal voltage detected that the toner cartridge (yellow) was not installed.
Error code 6103
Developing terminal voltage detected that the toner cartridge (magenta) was not installed.
Error code 6104
Developing terminal voltage detected that the toner cartridge (cyan) was not installed.
<User Check>
• Set the toner cartridge correctly.
Step
Dirt on the developing terminal of
1 the machine
High-voltage power supply PCB
2
failure
3 Main PCB failure
Cause
Cause
2-61
Remedy
Reattach the eject actuator.
Reattach the fuser cover.
Reconnect the eject sensor harness.
Replace the eject sensor PCB.
Replace the main PCB.
Remedy
Clean the developing terminal of the
machine.
(Refer to Fig. 2-6 (P2-63).)
Replace the high-voltage power supply
PCB.
Replace the main PCB.
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