Brother FAX-2840 Service Manual page 87

Error code B1
Scanner Error
Dark level offset data adjustment error for scanning.
* This error is indicated on the LCD in the maintenance mode.
Error code B2
Scanner Error
Gain control data adjustment error for scanning.
* This error is indicated on the LCD in the maintenance mode.
Step
1 CIS unit failure
2 Main PCB failure
Error code B3 to B6
These errors do 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.
---
An unidentified error occurred.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
Error code B7
Scanner Error
The voltage value was above the upper limit during scanning.
Error code B8
Scanner Error
The voltage value was below the lower limit during scanning.
Error code B9
Scanner Error
The white level does not increase during scanning although the light intensity was increased.
Step
1 CIS unit failure
2 Main PCB failure
Cause
Replace the CIS unit.
Replace the main PCB ASSY.
Cause
Replace the main PCB ASSY.
Cause
Replace the CIS unit.
Replace the main PCB ASSY.
2-50
Remedy
Remedy
Remedy
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