Brother MFC640CW Service Manual page 268

Error Code
(Hex)
BA Not used.
BB White level data error.
BC Not used.
BD Black level data error.
BE Scan starting edge
detection error.
BF-CF Not used.
D * Modem error.
E0-E3 Not used.
E4 Out of recording paper.
(Not used.)
E5 Not used.
E6 Write error in EEPROM.
Symptom
9 - 1 7
Probable Cause
CIS defective
Main PCB defective
CIS defective
Main PCB defective
CIS defective
CIS flat cable broken
or not connected
Main PCB defective
White film stained in
the scanner unit.
Main PCB defective
The paper tray cannot
feed paper
Registration sensor
actuator unhooked
Main PCB defective
Clutch gear not
switched between the
idle gear L and purge
gear
Main PCB defective
Solution
Replace the scanner
cover (scanner unit).
Replace the main PCB.
Replace the scanner
cover (scanner unit).
Replace the main PCB.
Replace the scanner
cover (scanner unit).
Correct the cable
connection.
Replace the scanner
cover (scanner unit).
Replace the main PCB.
Replace the scanner
cover (scanner unit).
Replace the main PCB.
Replace the paper tray.
Set the registration
sensor actuator into
place.
Replace the main PCB.
Check the engagement of
the clutch gear and clean
it.
Replace the main PCB.
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