Service manual

2-61
Confidential
■ Error code B8
A/D converter standard voltage failure; at Low side.
* This error is indicated on the LCD in the maintenance mode.
■ Error code B9
Scanning light adjustment error.
* This error is indicated on the LCD in the maintenance mode.
■ Error code BA
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.
Error, which cannot be specified, occurs.
■ Error code BB
White level data error.
* This error is indicated on the LCD in the maintenance mode.
Scanner Error
Step Cause Remedy
1 Document scanner unit failure Replace the document scanner unit.
2 Main PCB failure Replace the main PCB ASSY.
Scanner Error
Step Cause Remedy
1 Document scanner unit failure Replace the document scanner unit.
2 Main PCB failure Replace the main PCB ASSY.
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<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
Scanner Error
Step Cause Remedy
1
White level data failure Execute the "Acquisition of white level data
(Function code 55)".
2 Document scanner unit failure Replace the document scanner unit.
3 Main PCB failure Replace the main PCB ASSY.