Brother HL-4040CN Service Manual page 44

Error code 8A (T1)
Jam Tray 1
Removed the jammed paper from Tray 1.
Error code 8B (LT)
Jam Tray 2
Removed the jammed paper from Tray 2.
Error code 8C (MP)
Jam MP Tray
Remove the jammed paper from Multi Purpose Tray and press Go.
Paper jam in the appropriate tray
User Check
- Check if the paper is jammed in the appropriate tray. If jammed, remove it.
- Adjust the paper guide corresponding to the paper size.
- Check if too much paper is loaded in the tray.
Step
1 Harness connection failure of
registration front sensor PCB
ASSY
2 Paper feeding kit worn out
(MP/ T1/ LT)
3 Registration front sensor PCB
failure (MP/ T1/ LT)
4 Engine PCB failure
Cause
Check the harness connection of the registration
front sensor PCB ASSY in the appropriate tray,
and reconnect it.
Replace the paper feeding kit of the appropriate
tray.
(MP/ T1) Check the sensor performance following
the procedure described in
32". If any problem occurs, replace the front door
unit ASSY.
(LT) Check the sensor performance following the
procedure described in
any problem occurs, replace the LT paper feed
frame unit.
Replace the engine PCB ASSY.
1-27
Remedy
"Maintenance mode
"Maintenance mode
Confidential
32". If