Brother MFC-J3520 Service Manual page 110

Document jam inside ADF

User Check
- Check that document is loaded correctly in the document tray.
- Adjust the document guide to match the document size.
- Check that the document shorter than the specified size is not loaded.
- Check that thickness of the document is 64 to 90 g/m
Step
1 Foreign materials inside ADF
2 Document pressure bar not
mounted in place
3 Upper document chute not
mounted in place
4 Document scanning position
actuator not mounted in place
5 Document scanning position
sensor defective
6 Feeding path in ADF unit
damaged, broken
7 Feeding path inside document
scanner unit damaged, broken
8 Main PCB defective
Cause
Remove foreign materials.
Set the document pressure bar into place.
Set the upper document chute into place.
Set the document scanning position actuator
into place.
Replace the document scanning position
sensor PCB ASSY.
Replace the ADF unit.
Replace the document scanner unit.
Replace the main PCB ASSY.
2-76
2
.
Solution
Confidential