Brother MFC-J2320 Service Manual page 120

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
Document pressure bar not
2
mounted in place
Upper ADF chute not mounted
3
in place
First side document scanning
4 position sensor harness
connection failure
Second side document
5 scanning position sensor
harness connection failure
First side document scan
6 position actuator not mounted
in place
Second side document scan
7 position actuator not mounted
in place
Upper ADF chute, document
8
guide damaged, broken
First side document scanning
9
position sensor defective
Second side document
10 scanning position sensor
defective
Feeding path in ADF unit
11
damaged, broken
Feeding path inside document
12
scanner unit damaged, broken
13 Sensor relay PCB defective
14 Main PCB defective
Cause
Remove foreign materials.
Set the document pressure bar into place.
Set the upper ADF chute into place.
Reconnect the first side document scanning
position sensor harness.
Reconnect the second side document scanning
position sensor harness.
Set the first side document scan position
actuator into place.
Set the second side document scan position
actuator into place.
Replace the upper ADF chute.
Replace the first side document scanning
position sensor PCB ASSY.
Replace the second side document scanning
position sensor PCB ASSY.
Replace the ADF unit.
Replace the document scanner unit.
Replace the sensor relay PCB.
Replace the main PCB ASSY.
2-83
2
.
Solution
Confidential