Fax Problems; No Faxes Can Be Sent; No Faxes Can Be Received - Brother MFC-J2320 Service Manual

4.9

Fax Problems

4.9.1 No faxes can be sent

User Check
- Check that the line cord is inserted correctly into the socket.
- Check that the dialing function setting (tone/pulse) is correct.
- Check that the phone cord is not connected to EXT terminal.
Step
1 Modem PCB harness
connection failure
2 Control panel ASSY defective
3 Modem PCB defective
4 First side or second side CIS
unit defective
5 Main PCB defective

4.9.2 No faxes can be received

User Check
- Check that the line cord is inserted correctly into the socket.
- Check if the receiving mode setting is correct.
- Check that the phone cord is not connected to EXT terminal.
Step
Modem PCB harness
1
connection failure
2 Modem PCB defective
3 Main PCB defective
Cause
Reconnect the modem PCB harness.
Replace the control panel ASSY.
Replace the modem PCB ASSY.
Replace the first side or second side CIS unit.
Replace the main PCB ASSY.
Cause
Reconnect the modem PCB harness.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
2-90
Solution
Solution
Confidential