A Communication Error Occurs; Reception Mode Cannot Be Changed; Caller Id Are Not Displayed; Cannot Talk On The Handset - Brother DCP-7057 Service Manual

3.12.4 A communication error occurs

Step
1 NCU PCB failure
2 Main PCB failure

3.12.5 Reception mode cannot be changed

User Check
• Turn OFF the Distinctive ring mode.

3.12.6 Caller ID are not displayed

Step
1 Main PCB failure

3.12.7 Cannot talk on the handset

User Check
• Verify that the handset curled cord is securely inserted into the socket.
• Adjust the handset volume.
Step
1 Handset curled cord failure
2 Handset ASSY failure
3 Hook switch PCB ASSY failure
4 Main PCB failure
Cause
Cause
Cause
2-101
Remedy
Replace the NCU PCB ASSY.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
Remedy
Replace the handset curled cord.
Replace the handset ASSY.
Replace the hook switch PCB ASSY.
Replace the main PCB ASSY.
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