Brother DCP-L8400DN Service Manual

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Confidential
4.11 Document Feeding Problems
4.11.1 No feeding
< User Check >
- Load the document all the way, and check that the LCD display is changed.
- Check whether the number of loaded documents exceed the specified number.
- Check whether the ADF cover is properly closed.
4.11.2 Double feeding
< User Check >
- Check whether the document is thicker than the specifications.
- Check whether the number of loaded documents exceed the specified number.
Step Cause Remedy
1 Coming off of document
detection actuator
Re-assemble the document detection
actuator.
2 Coming off of ADF cover
actuator
Re-assemble the ADF cover actuator.
3 Connection failure of the ADF
motor harness
Reconnect the ADF motor harness.
4 Connection failure of the ADF
cover/document detection
sensor PCB harness
Reconnect the ADF cover/document
detection sensor PCB harness.
5 Document separate roller
failure
Replace the document separate roller ASSY.
6 ADF cover/document
detection sensor failure
Replace the ADF cover/document detection
sensor PCB ASSY.
7 ADF motor failure Replace the ADF motor.
8 ADF drive gear damaged Replace the ADF unit.
9 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 ADF separation pad worn out Replace the ADF separation pad.

Brother DCP-L8400DN Specifications

General

Brand	Brother
Model	DCP-L8400DN
Category	All in One Printer
Language	English