Document Becomes Wrinkled; Document Size Cannot Be Correctly Detected - Brother DCP-L8400CDN Service Manual

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Paper jam in the ADF eject section
< User Check >
- Check whether the document is thinner or thicker than the specifications.
Step
1
2
3
4
5
6
7

4.11.4 Document becomes wrinkled

< User Check >
- Check whether the document is thinner or thicker than the specifications.
- Check whether the number of loaded documents exceed the specified number.
- Check whether the document does not curl.
- Check whether the document guide matches the document size.
Step
1
2
3

4.11.5 Document size cannot be correctly detected

< User Check >
- Check whether the document is thinner or thicker than the specifications.
- Check whether the number of loaded documents exceed the specified number.
- Check whether the document does not curl.
Step
1
2
3
4
5
Cause
Foreign object ADF eject
section
First side document scanning
position actuator caught on
some position
Coming off of exit pinch roller
First side document scanning
position sensor failure
ADF drive gear damaged
Scratch on document scanner
unit
Main PCB failure
Cause
Document separate roller
worn out
Document feed roller worn out
ADF drive gear damaged
Cause
First side document scanning
position actuator caught on
some position
ADF motor failure
First side document scanning
position sensor failure
ADF drive gear damaged
Main PCB failure
Remove the foreign object.
Re-assemble the first side document
scanning position actuator.
Re-assemble the exit pinch roller.
Replace the first side document scanning
position sensor PCB ASSY.
Replace the ADF unit.
Replace the document scanner unit.
Replace the main PCB ASSY.
Replace the document separate roller ASSY.
Replace the document feed roller ASSY2.
Replace the ADF unit.
Re-assemble the first side document
scanning position actuator.
Replace the ADF motor.
Replace the first side document scanning
position sensor PCB ASSY.
Replace the ADF unit.
Replace the main PCB ASSY.
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Remedy
Remedy
Remedy
Confidential