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FC-22 TROUBLESHOOTING 4 - 24 January 2000 © TOSHIBA TEC
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C29 Exposure lamp disconnection detected
Does the exposure lamp light?
1. Check the CCD and SCM boards for any disconnected connector.
2. Check the shading correction plate of the original-width indicator unit if it is
dusty.
3. Check the CCD board for any open- or short-circuited conductor pattern.
4. Check the SCM board for any open- or short-circuited conductor pattern.
5. Replace the lens unit.
6. Replace the SCM board.
1. Check if the lamp connector is disconnected.
2. Check if the thermostat is blown out.
3. Check if the lamp has continuity.
4. Check the SCM board if any pin of connectors J7-B1, -B2, -B4, -B5 and -B6 is disconnected
or any harness is open- or short-circuited.
5. Check the SCM board for any open- or short-circuited conductor pattern.
6. Replace the SCM board.
7. Replace the lamp regulator.
NO
YES