Ricoh SP 1200S Service Manual Page 382

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  • TROUBLESHOOTING
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Troubleshooting of the Control Panel
M085/M086 6-80 SM
6.9.2 THE CONTROL PANEL DOES NOT WORK.
Possible cause and Remedy
1. Key sticking
Is a key on the control panel stuck?
Yes: Clean the panel cover, or remove the any burrs from the panel cover and panel
keys.
2. Connection between main PCB and control panel PCB
Are the main PCB and control panel PCB connected properly?
No: Reconnect the connector correctly.
3. Harness between main PCB and control panel PCB
Is the harness damaged?
Yes: Replace the harness with a normal one.
4. Rubber Key
Is the problem solved after replacing the rubber key?
Yes: Replace the rubber Key.
5. Control panel PCB
Is the problem solved after replacing the control panel PCB?
Yes: Replace the control panel PCB.
6. Main PCB
Is the problem solved after replacing the main PCB ASSY?
Yes: Replace the main PCB ASSY.
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