Brother DCP-7080 Service Manual page 86

 Error code A300
Document Jam
Clear the scanner jam, then press the Stop Key.
The first side document scanning position sensor has not detected the top of the document
even after the document has been fed for the specified distance.
<User Check>
• Set A4 or Letter size paper.
• Remove the jammed document.
Step
First side document scanning
1 position actuator caught in some
sections of the machine
Connection failure of the first
2 side document scanning
position sensor PCB harness
First side document scanning
3
position sensor failure
Main PCB failure
4
 Error code A400
Cover is Open
Close the ADF Cover, then press the Stop Key.
The ADF cover sensor detected that the ADF cover was open.
<User Check>
• Close the ADF cover correctly.
Step
ADF cover actuator caught in
1
some sections of the machine
Connection failure of the ADF
2 cover/document detection
sensor PCB harness
ADF cover sensor failure
3
Main PCB failure
4
Cause
Reattach the first side document scanning
position actuator.
Reconnect the first side document scanning
position sensor PCB harness.
Replace the first side document scanning
position sensor PCB ASSY.
Replace the main PCB ASSY.
Cause
Reattach the ADF cover actuator.
Reconnect the ADF cover/document detection
sensor PCB harness.
Replace the ADF cover/document detection
sensor PCB ASSY.
Replace the main PCB ASSY.
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Remedy
Remedy
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