Ricoh FT2260 Service Manual page 211

< E28 > (Optics Board Check)
- Definition -
1. Lights if the lens home position sensor does not change from HIGH to
LOW within 6.4 seconds when the lens moves from the reduction to the
enlargement mode.
< E29 > (Optics Board Check) .
- Definition -
1. Lights if the lens home position sensor does not change from LOW to
HIGH within 6.4 seconds when the lens moves from the enlargement to
the reduction mode.
- Possible causes -
Lens home position sensor defective
1.
2. Lens drive mechanism broken
3. Optics board defective
4. Main board defective
- Action -
Check if the lens home position sensor is actuated/deactuated when the lens
drive pulley turns.
OK NG
Repair the lens drive mechanism.
Check the voltage change at CN707-7 on the optics board when the lens
passes the home position.
Replace the optics board or the main board.
6-9
1 August 1988