Brother MFC845CW Manual De Servicio página 101

Error
Symptom
CodeHex)
8B
The paper feed motor
stops suddenly
8C
Current protection for the
driver IC activated in
paper feeding operation.
8D
The paper feed motor rotates
in the reverse direction
8E No used
8F
The paper feed motor is
being driven and cannot be
stopped.
Probable Cause
Abnormal load applied to
the paper feed roller
PF-related gear(s) broken
PF encoder disk stained or
scratched
PF encoder sensor
defective
Main PCB defective
Paper feed motor defective Replace the paper feed
motor
The driving current has
exceeded the limit due to
an abnormal load applied
to the PF-related gears
and rollers.
PF encoder disk stained
or scratched
PF encoder disk
dislocated
PF encoder sensor
defective
Abnormal load applied
the paper feed roller
Main PCB defective
Paper feed moor defective Replace the paper feed
motor
Software malfunctioning
4-14
Solution
Replace the PF-related
gear(s)
Replace the PF encoder
disk
Replace the PF encoder
PCB
Replace the main PCB
Check if the PF-related
gears and rollers are
mounted correctly.
Replace the paper pull-in
roller
Replace the paper feed
motor.
Replace the engine unit
Replace the PF encoder
disk
Replace the PF encoder disk
Replace the PF encoder
PCB
Check the PF Roller gear
and its related gears.
Replace the main PCB
Open and close the
scanner cover.
Unplug and plug the AC
cord.
Confidencial