Brother DCP-L5500D Service Manual page 111

 Error code AE00
Unit home position could not be detected after the power switch was turned ON.
Step
Incorrect correction data for first
1
side CIS unit
First side CIS unit drive belt
2
coming off
3 First side CIS unit failure
4 FB motor failure
5 Main PCB failure
 Error code AF00
Home position is still being detected even after the first side CIS unit was moved.
Step
1 Dust on the CIS guide shaft
2 CIS drive belt coming off
3 CIS carriage coming off
Connection failure of the FB
4
motor harness
5 First side CIS unit failure
6 FB motor failure
7 Main PCB failure
 Error code B000
Detected that the first side CIS flat cable or second side CIS flat cable was not inserted
correctly when function code 55 was executed.
Step
Connection failure of the first
1
side CIS flat cable
Connection failure of the second
2
side CIS flat cable
3 First side CIS unit failure
4 Second side CIS unit failure
5 Main PCB failure
Cause
Execute "Acquire white level data
code:
Reattach the first side CIS unit drive belt.
Replace the first side CIS unit.
Replace the document scanner unit.
Replace the main PCB ASSY.
Cause
Remove the dust on the CIS guide shaft.
Reattach the CIS drive belt.
Reattach the CIS carriage.
Reconnect the FB motor harness.
Replace the first side CIS unit.
Replace the document scanner unit.
Replace the main PCB ASSY.
Cause
Reconnect the first side CIS flat cable.
Reconnect the second side CIS flat cable.
Replace the first side CIS unit.
Replace the second side CIS unit.
Replace the main PCB ASSY.
2-76
Remedy
55)".
Remedy
Remedy
(function
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