Brother DCP-7057 Service Manual page 96

■ Error code AE
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.
Scan Unable AE
See Troubleshooting and routine maintenance chapter in User's Guide.
Error, which cannot be specified, occurs.
<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
■ Error code AF
Scan Unable AF
See Troubleshooting and routine maintenance chapter in User's Guide.
The white tape cannot be detected.
Step
White level data failure
1
Harness connection failure of
2
document scanner unit
Harness connection failure of FB
3
motor harness
4 CIS unit failure
5 Document scanner unit failure
6 Main PCB failure
■ Error code B0
Scanner Error B0
Scanning flat cable connection failure.
* This error is indicated on the LCD in the maintenance mode.
Step
Incomplete insertion of the
1 harness of the document scanner
unit
2 CIS unit failure
3 CIS flat cable failure
4 Main PCB failure
Cause
Cause
Cause
2-59
Remedy
Replace the main PCB ASSY.
Remedy
Execute the "Acquisition of white level data
(Function code 55)".
Check the harness connection of the
document scanner unit and reconnect it.
Check the harness connection of the FB
motor harness and reconnect it.
Replace the CIS unit.
Replace the document scanner unit.
Replace the main PCB ASSY.
Remedy
Reconnect the harness for the document
scanner unit correctly.
Replace the CIS unit.
Replace the document scanner unit.
Replace the main PCB ASSY.
Confidential