Troubleshooting For Fax Problems; Fax Cannot Be Sent - Brother HLL3290CDW 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 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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Cause
Connection failure of the
modem flat cable
Connection failure of the CIS
flat cable
Connection failure of the
panel flat cable
Connection failure of the
touch panel flat cable
Connection failure of the key
flat cable
Connection failure of the
document detection sensor
harness
Document detection actuator
coming off
First or second side CIS flat
cable failure
First or second side CIS unit
failure
ADF drive gear failure
Document scanner unit failure
Panel PCB failure
Key PCB failure
Modem PCB failure
Main PCB failure
Reconnect the modem flat cable.
Reconnect the CIS flat cable.
Reconnect the panel flat cable.
Reconnect the touch panel flat cable.
Reconnect the key flat cable.
Reconnect the document detection sensor
harness.
Reattach the document detection actuator.
Replace the first or second side CIS flat
cable.
Replace the first or second side CIS unit.
Replace the ADF unit.
Replace the document scanner unit.
Replace the panel PCB.
Replace the key PCB.
Replace the modem PCB.
Replace the main PCB.
2-152
Remedy
Confidential