Document Jam - Brother DCP-7090 Service Manual

4.11.3 Document jam

 Paper jam in the ADF cover
<User Check>
• Check that the thickness of the document is 64 to 105 g/m
• Check that the paper used for the document is not shorter than 147.3 mm.
• Check that the ADF cover is closed correctly.
• Check that the number of paper set has not exceeded the upper limit in the document tray.
Step
1
2
3
4
 Paper jam in the ADF
<User Check>
• Check that the thickness of the document is 64 to 105 g/m
• Check whether the document is smaller or larger than the specifications.
• Check whether the document is wet or wrinkled.
• Check that the document guide is adjusted to suit the document size.
Step
1
2
3
4
5
6
7
8
9
Cause
Foreign object inside the area
around ADF cover
Document pinch roller 1
coming off
Damaged ADF drive gear
Main PCB failure
Cause
Foreign object inside the ADF
Document scanning position
actuator coming off
Document pinch roller 2
coming off
Connection failure of the
document scanning position
sensor harness
Second side document hold
coming off
First side document hold
coming off
Fed at an angle and jammed
due to abrasion of document
separate roller
Document scanning position
sensor failure
Main PCB failure
2
.
Remove the foreign object.
Reattach the document pinch roller 1.
Replace the ADF unit.
Replace the main PCB ASSY.
2
.
Remove the foreign object.
Reattach the document scanning position
actuator.
Reattach the document pinch roller 2.
Check the connection of the document
scanning position sensor harness, and
reconnect it if necessary.
Reattach the second side document hold.
Reattach the first side document hold.
Replace the document separate roller ASSY.
Replace the ADF unit.
Replace the main PCB ASSY.
2-106
Remedy
Remedy
Confidential