Fax Cannot Be Received; No Bell Ring; A Communication Error Occurs - Brother DCP-L8400CDN Service Manual

4.13.2 FAX cannot be received

< User Check >
- Check whether the line cord is correctly inserted into the socket.
- Check the reception mode settings are correct.
Step
1
2
3
4

4.13.3 No bell ring

< User Check >
- Check whether the number of telephone rings is set to zero (0).
- Check whether the bell volume is set to zero (0).
Step
1
2
3
4
5

4.13.4 A communication error occurs

< User Check >
- Check whether the source of noise is around the machine.
Step
1
2
3
4
Cause
Connection failure of the
modem PCB flat cable
Disconnection of line cord
Modem PCB failure
Main PCB failure
Cause
Connection failure of the
speaker harness
Connection failure of the
modem PCB flat cable
Disconnection of line cord
Modem PCB failure
Main PCB failure
Cause
Connection failure of the
modem PCB flat cable
Disconnection of line cord
Modem PCB failure
Main PCB failure
Reconnect the modem PCB flat cable.
Replace the line cord.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
Reconnect the speaker harness.
Reconnect the modem PCB flat cable.
Replace the line cord.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
Reconnect the modem PCB flat cable.
Replace the line cord.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
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Remedy
Remedy
Remedy
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