Troubleshooting For Document Feeding Problems; No Document Is Fed; Multiple Documents Are Fed - Brother DCP-7090 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 64 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
Boss to push the ADF cover
sensor of the ADF cover
Document separate roller
failure
Damaged ADF drive gear
Main PCB failure
Cause
Abrasion of ADF separation
pad
Reattach the document detection actuator.
Reconnect the ADF motor harness.
Replace the ADF cover ASSY.
Replace the document separate roller ASSY.
Replace the ADF unit.
Replace the main PCB ASSY.
2
.
Replace the ADF separation pad.
2-105
Remedy
Remedy
Confidential