Ricoh SP 1200S Service Manual Page 384

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Troubleshooting of Fax Functions
M085/M086 6-82 SM
6.10.2 SPEED DIALING AND ONE-TOUCH DIALING CAN'T BE
USED.
Possible cause and Remedy
1. Speed dialing keys or one-touch dialing keys
Can a fax transmission be made using the numeric keys?
Yes: Replace the main PCB ASSY.
2. 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.
3. Connection between main PCB and NCU PCB
Are the main PCB and NCU PCB connected correctly?
No: Reconnect the connector.
4. Connection between main PCB and control panel PCB
Are the main PCB and control panel PCB connected correctly?
No: Reconnect the connector.
5. Contact of rubber keys
Is the problem solved after replacing the rubber keys?
No: Replace the rubber Keys.
6. NCU PCB
Is the problem solved after replacing the NCU PCB ASSY?
Yes: Replace the NCU PCB ASSY.
7. Control panel PCB
Is the problem solved after replacing the control panel PCB?
Yes: Replace the control panel PCB.
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