Ricoh Robin Service Manual page 245

24 June 1994
2.2 CODE #12 — EXPOSURE LAMP ERROR
- Definition -
The feedback signal falls below 0.5 volt (rms) for 1.0 second when the
•
exposure lamp is on.
The exposure lamp stays on for longer than 10 seconds.
•
- Possible Causes -
Defective ac drive board
•
Defective main board
•
- Action -
Turn the main switch off and on.
Check the voltage at CN114-3 on the main board after the Start key is
pressed.
Less 24 volts
than 20 volts
Replace the main board.
Check the voltage at CN114-2 on the main board.
More than Less than
0.5 volt 0.5 volt
Replace the ac drive board.
Replace the main board.
SERVICE CALL CONDITIONS
6-27