Fax Problems; Fax Sending Cannot Be Performed; Cannot Receive Fax; A Communications Error Occurs - Brother MFC Series Service Manual

4.9

Fax Problems

4.9.1

Fax sending cannot be performed

<User Check>
- Check if the telephone line cord is inserted correctly into the socket.
- Check if the dialing function setting (tone/pulse) is correct.
- Check if the telephone line cord is disconnected from the EXT terminal.
Step
1
MJ PCB harness connection
failure
2
Control panel ASSY defective
3
MJ PCB defective
4
CIS unit defective
5
Main PCB defective
4.9.2

Cannot receive fax

<User Check>
- Check if the telephone line cord is inserted correctly into the socket.
- Check if the receiving mode setting is correct.
- Check if the telephone line cord is disconnected from the EXT terminal.
Step
1
MJ PCB harness connection
failure
2
MJ PCB defective
3
Main PCB defective
4.9.3

A communications error occurs

<User Check>
- Change the special line support of the function menu or the Assurance Mode, then check
if the error has been resolved.
- Check that there is no source of noise around the machine.
Step
1
MJ PCB harness connection
failure
2
MJ PCB defective
3
Main PCB defective
Cause
Check the MJ PCB harness connection and
reconnect if necessary.
Replace the Control panel ASSY.
Replace the MJ PCB ASSY.
Replace the CIS unit.
Replace the Main PCB ASSY.
Cause
Check the MJ PCB harness connection and
reconnect if necessary.
Replace the MJ PCB ASSY.
Replace the Main PCB ASSY.
Cause
Check the MJ PCB harness connection and
reconnect if necessary.
Replace the MJ PCB ASSY.
Replace the Main PCB ASSY.
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Solution
Solution
Solution
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