Brother MFC-8540DN Service Manual

2-92
Confidential
 Paper jams in MP tray
<User Check>
• Check that the paper is set in the MP tray correctly.
• Flip over the paper in the MP tray or rotate the paper 180°.
• Adjust the paper guide according to the paper size.
• Check that the thickness of the paper is 60 to 200 g/m
2
.
• Flip through the paper and reset it in the MP tray.
Step Cause Remedy
1
Foreign object around the MP
tray
Remove the foreign object.
2
Connection failure of the
registration front/rear sensor
harness
Reconnect the registration front/rear sensor
harness.
3
Registration front actuator
coming off
Reattach the registration front actuator.
4
Connection failure of the
registration clutch harness
Reconnect the registration clutch harness.
5
Connection failure of the HVPS
flat cable
Reconnect the HVPS flat cable.
6
Connection failure of the relay
front harness
Reconnect the relay front harness.
7
Registration front sensor failure Replace the registration front/rear sensor PCB
ASSY.
8 Registration clutch failure Replace the registration clutch.
9 Paper feed motor failure Replace the paper feed motor.
10 Relay front PCB failure Replace the relay front PCB ASSY.
11
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.
12
Damaged gears in the paper
feeding system
Replace the main frame L ASSY.
13 Damaged fuser unit Replace the fuser unit.
14 Main PCB failure Replace the main PCB ASSY.

Brother MFC-8540DN Specifications

General

Brand	Brother
Model	MFC-8540DN
Category	All in One Printer
Language	English