Brother DCP-8110DN Service Manual page 100

Error code A400
Cover is Open
Close the ADF Cover.
The ADF cover sensor detected that the ADF cover was open.
<User Check>
• Close the ADF cover.
Step
Connection failure of the ADF
1
sensor PCB harness
Tab to push the ADF cover
2
sensor is broken.
ADF sensor failure
3
4 Main PCB failure
Error code A500
Scan Unable
Remove the original document. Turn the power off, then on again.
When scanning the fax, white or black correction data for the first side CIS was not within the
correct range.
Error code A600
Scan Unable A6
See Troubleshooting and routine maintenance chapter in User's Guide.
Although operation was retried due to error A500 that occurred while scanning the fax, white
or black correction data for the first side CIS was not within the correct range.
Step
Incorrect correction data for
1
first side CIS
2 First side CIS unit failure
3 Main PCB failure
Cause
Reconnect the ADF sensor PCB harness.
Replace the ADF cover.
Replace the ADF cover/document detection
sensor PCB ASSY.
Replace the main PCB ASSY.
Cause
Execute function code 55.
Replace the first side CIS unit.
Replace the main PCB ASSY.
2-55
Remedy
Remedy
Confidential