Brother DCP-6690CW, Service Manual, Page: 138 / 506

4-26 Confidential
* This value is default and can be modified by WSW16, selector 7.
Error Code
(Hex)
Symptom Probable Cause Solution
8D, 8E Not used.
8F The paper feed motor is
being driven and cannot
be stopped. Software malfunction Open and close the scanner
cover.
Unplug and plug the AC cord.
Paper feed motor harness not
connected correctly Correct the connection.
Main PCB defective Replace the main PCB.
90-A0 Not used.
A1 Scanner cover (scanner
unit) opened Scanner cover sensor
(carbon switch) broken Replace the control panel PCB.
Scanner cover sensor
actuator unhooked Set the scanner cover sensor
actuator into place.
Rubber keypad defective Replace the rubber keypad.
Control panel PCB defective Replace the control panel PCB.
Main PCB defective
Replace the main PCB.
A2 During scanning or
ejecting, a document of
90 cm* or longer is
detected. Document jam Remove the jammed
document.
Foreign materials in the
machine Remove foreign materials.
Document rear sensor
actuator caught on the
surrounding parts Correct the surrounding parts
on which the actuator caught.
Document rear sensor
broken Replace the document sensor
PCB.
Document ejection roller
defective or not rotating Replace the ADF unit.
Main PCB defective Replace the main PCB.
A3 The document rear
sensor does not come
ON during document
pull-in operation. Document jam Remove the jammed
document.
Foreign materials in the
machine Remove foreign materials.
Document rear sensor
actuator caught on the
surrounding parts Correct the surrounding parts
on which the actuator caught.
Document rear sensor
broken Replace the document sensor
PCB.
ADF motor defective Replace the ADF motor.
ADF-related gear(s) broken Replace the ADF unit.
Main PCB defective Replace the main PCB.