Troubleshooting Of Fax/Telephone Problems; Fax Cannot Be Sent; Fax Cannot Be Received; Communication Error Occurs - Brother FAX-2840 Service Manual

3.11 Troubleshooting of FAX/Telephone Problems

3.11.1 FAX cannot be sent

<User Check>
- Check that the telephone cord is securely inserted into the socket.
Step
Connection failure of the modem
1
PCB flat cable
Connection failure of the panel PCB
2
harness
3 Rubber key connection failure
4 Modem PCB failure
5 Panel PCB failure
6 Main PCB failure

3.11.2 FAX cannot be received

<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
Connection failure of the modem
1
PCB flat cable
2 Modem PCB failure
3 Main PCB failure

3.11.3 Communication error occurs

Step
1 Modem PCB failure
2 Main PCB failure

3.11.4 Caller ID is not displayed

Step
1 Modem PCB failure
Cause
Reconnect the modem PCB flat cable.
Reconnect the panel PCB harness.
Replace the rubber key.
Replace the modem PCB ASSY.
Replace the panel PCB ASSY.
Replace the main PCB ASSY.
Cause
Reconnect the modem PCB flat cable.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
Cause
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
Cause
Replace the modem PCB ASSY.
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Remedy
Remedy
Remedy
Remedy
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