Brother MFC-8370DN - 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

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Confidential
■ Error code B1
Dark level offset data level error for scanning
* This error is indicated on the LCD in the maintenance mode.
Error code B2
Gain control data level error for scanning
* This error is indicated on the LCD in the maintenance mode.
Error code B7
A/D converter standard voltage failure; at High side
* This error is indicated on the LCD in the maintenance mode.
Error code B8
A/D converter standard voltage failure; at Low side
* This error is indicated on the LCD in the maintenance mode.
Scanner Error
Scanner Error
Scanner Error
Scanner Error
Step Cause Remedy
1
CCD unit failure Replace the CCD module. (CCD model)
Replace the document scanner unit.
(CIS model)
2 Main PCB failure Replace the main PCB ASSY.