Troubleshooting For Fax Problems; Fax Cannot Be Sent - Brother DCP-L5500D Service Manual

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
Connection failure of modem flat
1
cable
2 Connection failure of CIS flat cable Reconnect the CIS flat cable.
Connection failure of panel flat
3
cable
Connection failure of touch panel
4
flat cable
Connection failure of key PCB flat
5
cable
Connection failure of ADF cover/
6 document detection sensor PCB
harness
Document detection actuator
7
coming off
First or second side CIS flat cable
8
failure
9 First or second side CIS unit failure Replace the first or second side CIS unit.
10 ADF drive gear failure
11 Document scanner unit failure
12 Panel PCB failure
13 Touch panel failure
14 Key PCB failure
15 Modem PCB failure
16 Main PCB failure
Cause
Reconnect the modem flat cable.
Reconnect the panel flat cable.
Reconnect the touch panel flat cable.
Reconnect the key PCB flat cable.
Reconnect the ADF cover/document
detection sensor PCB harness.
Reattach the document detection actuator.
Replace the first or second side CIS flat
cable.
Replace the ADF unit.
Replace the document scanner unit.
Replace the panel PCB ASSY.
Replace the touch panel ASSY.
Replace the panel unit.
Replace the modem PCB ASSY.
Replace the main PCB ASSY.
2-122
Remedy
Confidential