Brother MFC-8460N Service Manual page 330

Error Code
(Hex)
83 Recording paper jam. (The
registration sensor comes ON
too early in the paper feeding
operation.)
84
Recording paper jam. (The
ejection sensor stays ON
after completion of paper
ejection operation.)
85 No paper tray1 loaded.
86 No paper tray2 loaded.
87 Not used.
Recording paper jam. (Even
88
after
operation, the regist rear
sensor is still OFF.)
89 Not used.
Symptom
paper pulling-in
Probable Cause
Separation pad damaged
Registration sensor
actuator does not move
smoothly.
Foreign materials in the
paper path
The paper ejection roller
does not rotate correctly.
Ejection sensor actuator
does not move smoothly.
Ejection sensor defective
Main PCB defective
PE PG sensor defective
Main PCB defective
PE PG sensor of LT
defective
Main PCB defective
Foreign materials in the
machine
Regist actuator rear does
not move smoothly.
Fuser unit defective
Breakage of the gear in
the frame L ASSY
Regist rear sensor
defective
PE PG sensor defective
Main PCB defective
9-7
Solution
Replace the separation
pad ASSY.
Set the registration sensor
actuator into place.
Remove foreign materials.
Replace the paper ejection
roller.
Set the ejection sensor
actuator into place.
Replace the relay rear
PCB ASSY.
Replace the main PCB.
Replace the PE PG sensor.
Replace the main PCB.
Replace the PE PG sensor
of LT.
Replace the main PCB.
Remove foreign materials
in the machine.
Set the regist actuator rear
into place.
Replace the fuser unit.
Replace the frame
ASSY.
Replace the high-voltage
PS PCB.
Replace the PE PG sensor.
Replace the main PCB.
Confidential
L