Ricoh FT5233 Service Manual page 852

12 February 1992
17.2 CODE # H2 – TIMING SENSOR OUTPUT ERROR
- Definition -
When the main motor is turning, the timing sensor output takes over 100
msec to change.
- Possible Causes -
•
The timing sensor is defective
•
The main motor is defective
•
The main control board is defective
- Action -
Turn the main switch off and on.
Does the main motor turn when the main switch is turned on?
Yes No
Check the voltage between CN300-1 and CN300-2.
100 V
Check the continuity between CN310-1 and CN310-2.
Good
Check the continuity between CN330-1 and CN330-2.
Good
Check the continuity between CN300 and CN120 through CN310
and CN330.
Good
Replace the main control board.
Check the copier
No good
Replace the door safety switch (AC).
No good
Replace the main motor.
No good
Repair the harness.
51
SERVICE CALL CONDITIONS
0 V