Laser Optical Unit Related Service Call - Toshiba FC-22 Manual

4.1.17 Laser optical unit related service call

CA1 Polygonal motor rotation abnormal
Is the polygonal motor rotating?
NO
YES
Are both A2 and A3 pins of the connector J166 on the IMC board always at the level "L"?
NO
YES
1. Check the IMC board for any open- or short-circuited conductor pattern.
2. Replace the IMC board.
3. Replace the laser optical unit.
FC-22 TROUBLESHOOTING
1. Check if the polygonal motor connector is disconnected.
2. Check the IMC board if connectors J166 or J161 are disconnected.
3. Check for any open-circuited harness or disconnected connector pin.
4. Check the IMC board for any open- or short-circuited conductor pattern.
5. Replace the IMC board.
6. Replace the laser optical unit.
1. Check the IMC board for any open- or short-circuited conductor pattern.
2. Replace the IMC board.
3. Replace the laser optical unit.
4 - 38 January 2000 © TOSHIBA TEC