1-53
Confidential
11.
Troubleshooting of fax functions
■
FAX can't be sent.
User Check
• Verify that the telephone cord is securely connected.
Step
Cause
Check
Result
Remedy
1
Dial mode
Setting
Can a dialing signal (PB
or DP) be heard
normally in each mode?
(Use telephone line
emulator if required.)
Yes
Check the dialing mode
setting at customer's
again. Check the
telephone line cord
between machine and
socket.
2
Connection
between main
PCB and NCU
PCB
Are the main PCB and
NCU PCB connected
correctly?
No
Reconnect the connector.
3
Connection
between main
PCB and control
panel PCB
Are the main PCB and
control panel PCB
connected correctly?
No
Reconnect the connector.
4
Contact of rubber
keys
Does the rubber keys
work correctly?
No
Replace the rubber Keys.
5
NCU PCB
Is the problem solved
after replacing the NCU
PCB ASSY?
Yes
Replace the NCU PCB
ASSY.
6
Control panel
PCB
Is the problem solved
after replacing the
control panel PCB?
Yes
Replace the control panel
PCB.
7
Main PCB
Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
Summary of Contents for DCP-7030
Page 201: ...5 5 Confidential Print sample Fig 5 1 ...
Page 226: ...5 30 Confidential Location of fans Fig 5 13 Fan motor 60 unit Right side ...
Page 234: ...6 2 Confidential LVPS PCB Circuit Diagram 100V ...
Page 235: ...6 3 Confidential LVPS PCB Circuit Diagram 200V ...
Page 239: ...6 7 Confidential Wiring Diagram ...