A Communications Error Occurs - Brother MFC-J2320 Service Manual

4.9.3 A communications error occurs

User Check
- Change the "compatibility" of the function menu to see if the error is cleared.
- Check that there is no noise source around this machine body.
Step
Modem PCB harness
1
connection failure
2 Modem PCB defective
3 Main PCB defective
Cause
Reconnect the modem PCB harness.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
2-91
Solution
Confidential