Sharp AR-651 Service Handbook page 207

[C1C] External LCF tray motor driving abnormally (Feeding is abled from the cassettes other
than the external LCF.)
Is the tray motor driving? (Perform the output check in the test mode: 03-271)
NO
1. Check if the connector J815 on the LCF tray motor is not disconnected.
2. Check if the connectors J801~804 on the LCF board are not disconnected.
3. Check if the connector of the tray-up sensor is not disconnected.
4. Check if the actuator reaches the sensor.
5. Check if the power (24V) is supplied to 1pin and 2pin of J803. If not, check if
6. Replace the LCF board.
7. Replace the LGC board.
YES
Is the tray-up sensor working? (Perform the input check in the test mode: 03-[ENERGY SAVER]
OFF/[1]/[C]
NO
1. Check if the connector of the tray-up sensor is not disconnected.
2. Check if the connectors J801~804 on the LCF board are not disconnected.
3. Check if the actuator reaches the sensor.
4. Check if the coppector pins are not disconnected and the harness is not
5. Replace the LCF board.
6. Replace the LGC board.
YES
1. Check if the tray lifting mechanism has no abnormality.
2. Replace the LCF board.
3. Replace the LGC board.
the door switch is turned ON and the harness of it is not open-circuited.
open-circuited.
5 - 57 AR-651/810 TROUBLE SHOOTING