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Confidential
4.13 Troubleshooting for Fax Problems
4.13.1 Fax cannot be sent
4.13.2 Fax cannot be received
4.13.3 Bell does not sound
4.13.4 Communication error occurs
<User Check>
- Check that the line cord is inserted into the socket correctly.
- Check that the dial function setting (tone/pulse) is correct.
Step Cause Remedy
1
Connection failure of the NCU PCB
harness
Check the connection of the NCU PCB
harness, and reconnect it if necessary.
2 Rubber key failure Replace the rubber key.
3 Panel PCB failure Replace the panel PCB ASSY.
4 Touch panel PCB failure Replace the touch panel PCB ASSY.
5 NCU PCB failure Replace the NCU PCB ASSY.
6
First side CIS unit or second side
CIS unit failure
Replace the first side CIS unit or second
side CIS unit.
7 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Check that the line cord is inserted into the socket correctly.
- Check that the receiving mode setting is correct.
Step Cause Remedy
1
Connection failure of the NCU PCB
harness
Check the connection of the NCU PCB
harness, and reconnect it if necessary.
2 NCU PCB failure Replace the NCU PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Check that "0" is not set for the number of rings.
- Check that "0" is not set for the bell volume.
Step Cause Remedy
1
Connection failure of the speaker
harness
Check the connection of the speaker
harness, and reconnect it if necessary.
2 Speaker failure Replace the speaker unit.
3 NCU PCB failure Replace the NCU PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Check whether there is any noise source near the machine.
Step Cause Remedy
1
Connection failure of the NCU PCB
harness
Check the connection of the NCU PCB
harness, and reconnect it if necessary.
2 NCU PCB failure Replace the NCU PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.
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