Brother DCP-L8400CDN Service Manual page 88

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Error code 6A00
Drum !
Slide the Blue tab on Drum Unit.
Electric discharge that may be caused by dirt on the corona wire of the drum unit was detected.
Error code 6B01
Drum Stop
Replace the Drum Unit.
Electric discharge was detected when the number of the drum unit rotations had become more
than twice of the upper limit.
< User Check >
- Clean the corona wire by sliding the blue tab of the drum unit for all four colors several times.
- Clean the terminal of the drum unit. (Refer to
- Replace the drum unit.
Step
1 Dirt on the GRID terminals of the
main body
2 Dirt on the terminal of the
high-voltage power supply PCB
3 High-voltage power supply PCB
failure
4 Main PCB failure
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Error code 6C02
Tray 2 Error
Take out Tray 2 and push it back in firmly.
After the T2 paper tray unit is opened and closed or the power is turned ON, the T2 plate origin
sensor detects that lift-up of the plate of the T2 paper tray unit is not completed within the
specified period of time.
< User Check >
- Open the T2 paper tray unit and close the T2 paper tray unit correctly.
Step
1 Connection failure of the T2 plate
origin sensor harness
2 T2 relay PCB failure
3 T2 plate origin sensor failure
4 Main PCB failure
Fig. 2-8
Cause
Clean the GRID terminals of the main
body. (Refer to
Clean the terminal of the high-voltage
power supply PCB.
Replace the high-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
Cause
Reconnect the T2 plate origin sensor
harness.
Replace the T2 relay PCB ASSY.
Replace the T2 paper tray unit.
Replace the main PCB ASSY.
2-58
(P2-55).)
Remedy
Fig. 2-7 (P2-55).)
Remedy
Confidential