Brother DCP375CW Service Manual page 153

Error Code
Symptom
(Hex)
90-A0 Not used.
A1 The scanner cover
sensor detects that the
scanner cover (scanner
unit) is opened.
A2 The document rear
sensor detects a
document of 90 cm* or
longer during scanning
or ejecting.
A3 The document rear
sensor does not come
ON during document
pull-in operation.
A4 Not used.
* This value is default and can be modified by WSW16, selector 7.
Probable Cause
Scanner cover sensor
(carbon switch) broken
Scanner cover sensor
actuator unhooked
Rubber keypad defective
Control panel PCB defective Replace the control panel PCB.
Main PCB defective
Document jam
Foreign materials in the
machine
Document rear sensor
actuator caught on the
surrounding parts
Document rear sensor
broken
Document feed roller 2
defective or not rotating
Main PCB defective
Document jam
Foreign materials in the
machine
Document rear sensor
actuator caught on the
surrounding parts
Document rear sensor
broken
ADF motor defective
ADF-related gear(s) broken
Main PCB defective
4-21
Solution
Replace the control panel PCB.
Set the scanner cover sensor
actuator into place.
Replace the rubber keypad.
Replace the main PCB.
Remove the jammed
document.
Remove foreign materials.
Correct the surrounding parts
on which the actuator caught.
Replace the document rear
sensor PCB.
Replace the ADF unit.
Replace the main PCB.
Remove the jammed
document.
Remove foreign materials.
Correct the surrounding parts
on which the actuator caught.
Replace the document rear
sensor PCB.
Replace the ADF motor.
Replace the ADF unit.
Replace the main PCB.
Confidential