Dark Level Offset Data Level Error For Scanning; Gain Control Data Level Error For Scanning; A/D Converter Standard Voltage Failure; At High Side; A/D Converter Standard Voltage Failure; At Low Side - Brother DCP-8070D Service Manual

■ Error code B1
Scanner Error

Dark level offset data level error for scanning

* This error is indicated on the LCD in the maintenance mode.
Error code B2
Scanner Error

Gain control data level error for scanning

* This error is indicated on the LCD in the maintenance mode.
Error code B7
Scanner Error

A/D converter standard voltage failure; at High side

* This error is indicated on the LCD in the maintenance mode.
Error code B8
Scanner Error

A/D converter standard voltage failure; at Low side

* This error is indicated on the LCD in the maintenance mode.
Step
CCD unit failure
1
2 Main PCB failure
Cause
3-33
Remedy
Replace the CCD module. (CCD model)
Replace the document scanner unit.
(CIS model)
Replace the main PCB ASSY.
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