Brother 09055CDN Service Manual page 124

■ Error code BB
Scanner Error
White level data error.
* This error is indicated on the LCD in the maintenance mode.
Step
1 White level data failure
2 Second side scanning CIS failure
3 Document scanner unit failure
4 Main PCB failure
■ Error code BC
Scanner Unable BC
See Troubleshooting and routine maintenance chapter in User's Guide.
Scanning failure upon FAX transmission. (Second side)
(Document scanner unit failure for the second time or later.)
Step
1 Second side scanning CIS failure
2 Main PCB failure
■ Error code BD
Scanner Error
Black level data error.
* This error is indicated on the LCD in the maintenance mode.
Step
1 Second side scanning CIS failure
2 Document scanner unit failure
3 Main PCB failure
■ Error code BE
Scanner Error
The scanning area start edge detection error.
This error does not usually occur in the normal use. The conceivable causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
<User Check>
- Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
Cause
Cause
Cause
Cause
2-85
Remedy
Perform the acquisition of white level data.
(Function code 55)
Replace the second side scanning CIS.
Replace the document scanner unit.
Replace the main PCB ASSY.
Remedy
Replace the second side scanning CIS.
Replace the main PCB ASSY.
Remedy
Replace the second side scanning CIS.
Replace the document scanner unit.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
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