Brother MFC-7380

2-96
Confidential
4.13.4 Communication error occurs
<User Check>
- Check whether there is any noise source near the machine.
Step Cause Remedy
1
Connection failure of modem flat
cable
Check the connection of the modem flat
cable, and reconnect it if necessary.
2
Connection failure of modem FG
harness
Screw tighten the screws of the modem FG
harness.
3
Line cord breakage Replace the line cord.
4
Modem PCB failure Replace the modem PCB ASSY.
5
Main PCB failure Replace the main PCB ASSY.