Brother MFC-7240 - Troubleshooting of Fax;Telephone Problems; FAX Cannot be Sent; FAX Cannot be Received; Communication Error Occurs

2-82
Confidential
3.11 Troubleshooting of FAX/Telephone Problems
3.11.1 FAX cannot be sent
3.11.2 FAX cannot be received
3.11.3 Communication error occurs
3.11.4 Caller ID is not displayed
<User Check>
- Check that the telephone cord is securely inserted into the socket.
Step Cause Remedy
1
Connection failure of the modem
PCB flat cable
Reconnect the modem PCB flat cable.
2
Connection failure of the panel PCB
harness
Reconnect the panel PCB harness.
3 Rubber key connection failure Replace the rubber key.
4 Modem PCB failure Replace the modem PCB ASSY.
5 Panel PCB failure Replace the panel PCB ASSY.
6 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Check that the telephone cord is securely inserted into the socket.
- Check that the reception mode setting is correct.
- Check that the paper is loaded into the paper tray correctly.
Step Cause Remedy
1
Connection failure of the modem
PCB flat cable
Reconnect the modem PCB flat cable.
2 Modem PCB failure Replace the modem PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Modem PCB failure Replace the modem PCB ASSY.
2 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Modem PCB failure Replace the modem PCB ASSY.