Brother HLL3290CDW Service Manual page 134

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Error code A400
The ADF cover sensor detected that the ADF cover was open.
<User Check>
• Close the ADF cover correctly.
Step
ADF cover actuator caught in
1
some sections of the machine
ADF cove sensor attachment
2
failure
3 ADF cover attachment failure
Connection failure of the ADF
4
cover sensor harness.
5 Damage of the ADF cover
6 ADF cover sensor failure
7 Main PCB failure
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Error code A500
When scanning the fax, white or black correction data for the first side CIS unit was not within
the correct range (first time).
Error code A600
When scanning the fax, white or black correction data for the first side CIS unit was not within
the correct range (second time).
Step
Incorrect correction data for first
1
side CIS unit
2 Damaged first side CIS flat cable
3 First side CIS unit failure
4 White tape failure
5 Main PCB failure
Cause
Cause
2-98
Remedy
Reattach the ADF cover actuator.
Reattach the ADF cover sensor.
Reattach the ADF cover.
Reconnect the ADF cover sensor
harness.
Replace the ADF cover.
Replace the ADF unit.
Replace the main PCB.
Remedy
Execute "Acquire white level data
(Function code 55)".
Replace the first side CIS flat cable.
Replace the first side CIS unit.
Replace the document scanner unit.
Replace the main PCB.
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