Brother DCP-L8400CDN Service Manual page 97

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Error code 9001
Size mismatch
Reload correct paper in MP Tray, then press [Retry].
The size of paper loaded in the MP tray and the one specified from the driver are not same
when paper is fed from the MP tray.
Error code 9002
Size mismatch
Reload correct paper in Tray1,then press [Retry].
The size of paper loaded in the paper tray 1 and the one specified from the driver are not
same when paper is fed from the paper tray 1.
Error code 9003
Size mismatch
Reload correct paper in Tray2,then press [Retry].
The size of paper loaded in the T2 paper tray unit and the one specified from the driver are not
same when paper is fed from the T2 paper tray unit.
< User Check >
- When specifying the paper in the driver, set the paper size of the paper that is actually set.
Step
1 Registration rear actuator caught
on some position
2 Registration rear sensor failure
3 Main PCB failure
Cause
Re-assemble the registration rear
actuator.
Replace the registration front/rear sensor
PCB ASSY.
Replace the main PCB ASSY.
2-67
Remedy
Confidential