Fax Cannot Be Received; Telephone Communication Is Unavailable - Brother DCP-7080 Service Manual

4.13.2 Fax cannot be received

<User Check>
- Check that the line cord is inserted into the socket correctly.
- Check that the receiving mode setting is correct.
- Check that the handset is placed on the handset holder correctly.
- Check that the receiver's machine works normally or the function you want to perform is
equipped with the receiver's machine.
- Move the machine to the other place to check whether there is any noise source near
the machine.
Step
Connection failure of modem flat
1
cable
Line cord breakage
2
Modem PCB failure
3
Main PCB failure
4

4.13.3 Telephone communication is unavailable

<User Check>
- Check that the line cord is inserted into the socket correctly.
- Check that the dial function setting (tone/pulse) is correct.
- Check that the handset curled cord is inserted correctly.
- Check that the number to be dialed is saved correctly in the telephone directory.
- Check that the receiver's machine works normally.
- Move the machine to the other place to check whether there is no noise source near the
machine.
Step
Connection failure of modem flat
1
cable
Connection failure of hook harness Reconnect the hook harness.
2
Hook actuator coming off
3
Rubber key failure
4
Line cord breakage
5
Handset curled cord breakage
6
Hook switch PCB failure
7
Panel PCB failure
8
Modem PCB failure
9
Main PCB failure
10
Cause
Check the connection of the modem flat
cable, and reconnect it if necessary.
Replace the line cord.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
Cause
Reconnect the modem flat cable.
Reattach the hook actuator.
Replace the panel unit.
Replace the line cord.
Replace the handset curled cord.
Replace the hook switch PCB ASSY.
Replace the panel PCB ASSY.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
2-95
Remedy
Remedy
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