Document Feeding Problems; Document Can Not Be Fed; Document Double Feeding - Brother HL-J6000DW Service Manual

4.7

Document Feeding Problems

4.7.1 Document can not be fed

< User Check >
- Check that document is loaded all the way to the end correctly in the document tray.
- Check that the number of documents loaded in the document tray is within specified
volume.
Step
1 Foreign materials in adjacent
area of the document pick-up
roller
2 Document pick-up roller
stained
3 Document detection actuator
not mounted in place
4 ADF motor harness connection
failure
5 ADF document detection
sensor harness connection
failure
6 Document pick-up roller worn
out
7 ADF document detection
sensor defective
8 ADF motor defective
Document feed gear,
document separation roller
gear broken
9 Main PCB defective

4.7.2 Document double feeding

< User Check >
- Check whether a document thinner than the specified one is used..
Step
1 ADF separation pad worn out
Cause
Remove foreign materials.
Clean the document pick-up roller.
Set the document detection actuator into place.
Reconnect the ADF motor harness.
Reconnect the ADF document detection sensor
harness.
Replace the document separation roller ASSY.
Replace the ADF document detection sensor/
ADF document width sensor PCB.
Replace the ADF unit.
Replace the main PCB.
Cause
Replace the ADF separation pad holder ASSY.
2-80
Solution
Solution
Confidential