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Confidential
4.13 Troubleshooting for Fax Problems
4.13.1 Fax 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 handset curled cord is inserted into the socket correctly.
• Check that the handset is placed on the handset holder 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 modem flat
cable
Reconnect the modem flat cable.
2 Connection failure of CIS flat cable Reconnect the CIS flat cable.
3
Connection failure of panel flat
cable
Reconnect the panel flat cable.
4
Connection failure of touch panel
flat cable
Reconnect the touch panel flat cable.
5
Connection failure of key PCB flat
cable
Reconnect the key PCB flat cable.
6
Connection failure of ADF cover/
document detection sensor PCB
harness
Reconnect the ADF cover/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 Touch panel failure Replace the touch panel ASSY.
14 Key PCB failure Replace the panel unit.
15 Modem PCB failure Replace the modem PCB ASSY.
16 Main PCB failure Replace the main PCB ASSY.
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