Brother 09055CDN Service Manual page 121

■ Error code AF
Scanner Unable AF
See Troubleshooting and routine maintenance chapter in User's Guide.
The white tape cannot be detected.
Step
1 White level data failure
2 Harness connection failure of
document scanner unit
3 Document scanner unit failure
4 Main PCB failure
■ Error code B0
Scanner Error
Scanning FFC connection failure.
* This error is indicated on the LCD in the maintenance mode.
Step
1 Incomplete insertion of the
second side scanning CIS
flat cable of the document
scanner unit
2 Incomplete insertion of the
flat cable of the document
scanner unit
3 Second side scanning CIS
flat cable of document scanner
unit failure
4 Second side scanning CIS failure
5 Document scanner unit failure
6 Main PCB failure
Cause
Cause
2-82
Remedy
Perform the acquisition of white level data.
(Function code 55)
Check the harness connection of the
document scanner unit and reconnect it.
Replace the document scanner unit.
Replace the main PCB ASSY.
Remedy
Reinsert the second side scanning CIS
flat cable of the document scanner unit.
Reconnect the flat cable for the document
scanner unit correctly.
Replace the second side scanning CIS flat
cable.
Replace the second side scanning CIS.
Replace the document scanner unit.
Replace the main PCB ASSY.
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