Brother MFC-2712DN User Manual

2-100
Confidential
4.6 Troubleshooting for Control Panel Problems
4.6.1 Nothing is displayed on the LCD
<User Check>
• Turn the power switch OFF and then back ON again.
• Unplug the AC cord and then plug it again.
4.6.2 Nothing is displayed on the LED
<User Check>
• Turn the power switch OFF and then back ON again.
4.6.3 Unable to perform panel operation
<User Check>
• Turn the power switch OFF and then back ON again.
Step Cause Remedy
1
Connection failure of the
panel flat cable
Reconnect the panel flat cable.
2
Connection failure of the low-
voltage power supply harness
Reconnect the low-voltage power supply
harness.
3
Connection failure of the LCD
flat cable
Reconnect the LCD flat cable.
4 AC cord failure Replace the AC cord.
5 Panel flat cable failure Replace the panel flat cable.
6 LCD failure Replace the panel unit.
7 Panel PCB ASSY failure Replace the panel PCB ASSY.
8
Low-voltage power supply
PCB failure
Replace the low-voltage power supply PCB
ASSY.
9 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1
Connection failure of the key
PCB flat cable
Reconnect the key PCB flat cable.
2 Panel flat cable failure Replace the panel flat cable.
3 Key PCB failure Replace the key PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1
Connection failure of the panel
flat cable
Reconnect the panel flat cable.
2
Connection failure of the touch
panel flat cable
Reconnect the touch panel flat cable.
3
Connection failure of the key
PCB flat cable
Reconnect the key PCB flat cable.
4 Panel PCB failure Replace the panel PCB ASSY.
5 Key PCB failure Replace the key PCB ASSY.
6 Touch panel ASSY failure Replace the panel unit.
7 Main PCB failure Replace the main PCB ASSY.

Brother MFC-2712DN Specifications

General

Brand	Brother
Model	MFC-2712DN
Category	All in One Printer
Language	English