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Confidential
4.13 Troubleshooting for FAX/Phone Problems
4.13.1Fax cannot be sent
<User Check>
• Check that the line cord is inserted into the socket correctly.
• Check that the dial function setting (tone/pulse) is correct.
• Check that the fax document is set in the ADF correctly.
• Check that the number to be dialed is saved correctly in the telephone directory.
• Check that the receiver's machine works normally or the function you want to perform is
equipped with the receiver's machine.
• Move the machine to the other place to check whether there is any noise source near the
machine.
• Replace the telephone line.
Step Cause Remedy
1
Connection failure of the
modem flat cable
Reconnect the modem flat cable.
2
Connection failure of the CIS
flat cable
Reconnect the CIS flat cable.
3
Connection failure of the
panel flat cable
Reconnect the panel flat cable.
4
Connection failure of the
touch panel flat cable
Reconnect the touch panel flat cable.
5
Connection failure of the key
PCB flat cable
Reconnect the key PCB flat cable.
6
Connection failure of the ADF
document detection sensor
PCB harness
Reconnect the ADF document detection
sensor PCB harness.
7
Document detection actuator
coming off
Reattach the document detection actuator.
8
First or second side CIS flat
cable failure
Replace the first or second side CIS flat
cable.
9
First or second side CIS unit
failure
Replace the first or second side CIS unit.
10 ADF drive gear failure Replace the ADF unit.
11 Document scanner unit failure Replace the document scanner unit.
12 Panel PCB failure Replace the panel PCB ASSY.
13 Key PCB failure Replace the key PCB ASSY.
14 Modem PCB failure Replace the modem PCB ASSY.
15 Main PCB failure Replace the main PCB ASSY.
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