Fax Problems; No Faxes Can Be Sent; No Faxes Can Be Received - Brother MFC-J3520 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 MJ PCB harness connection
failure
2 LCD PCB harness connection
failure
3 Panel PCB harness
connection failure
4 LCD PCB ASSY defective
5 Touch panel defective
6 MJ PCB defective
7 First side or second side CIS
unit defective
8 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
1 MJ PCB harness connection
failure
2 MJ PCB defective
3 Main PCB defective
Cause
Reconnect the MJ PCB harness.
Reconnect the LCD PCB harness.
Reconnect the panel PCB harness.
Replace the LCD PCB ASSY.
Replace the touch panel.
Replace the MJ PCB ASSY.
Replace the first side or second side CIS unit.
Replace the main PCB ASSY.
Cause
Reconnect the MJ PCB harness.
Replace the MJ PCB ASSY.
Replace the main PCB ASSY.
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Solution
Solution
Confidential