Troubleshooting For Document Feeding Problems; No Document Is Fed; Multiple Documents Are Fed - Brother HLL3290CDW Service Manual

4.11 Troubleshooting for Document Feeding Problems

4.11.1 No document is fed

<User Check>
• Set the document properly and check that the display on the LCD changes.
• Check that the number of paper set has not exceeded the upper limit in the document tray.
• Check that the ADF cover is closed correctly.
Step
1
2
3
4
5
6

4.11.2 Multiple documents are fed

<User Check>
• Check that the thickness of the document is 60 to 105 g/m
• Check that the number of paper set has not exceeded the upper limit in the document tray.
Step
1
Cause
Document detection actuator
coming off
Connection failure of the ADF
motor harness
Document detection sensor
failure
Document separation roller
failure
Damaged ADF drive gear
Main PCB failure
Cause
Abrasion of ADF separation
pad ASSY
Reattach the document detection actuator.
Reconnect the ADF motor harness.
Replace the document detection sensor
PCB.
Replace the document separation roller
ASSY.
Replace the ADF unit.
Replace the main PCB.
2
.
Replace the ADF separation holder ASSY.
2-144
Remedy
Remedy
Confidential