Orlginal Size Detection; Related Service Call Conditions - Ricoh FT5540 Service Manual

3.7 ORIGINAL SIZE DETECTION
NOTE: With the F33\34, original size detection is performed using the OL and OW sensors in
the ARDF unit. For more information, see the ARDF options section.

3.8 RELATED SERVICE CALL CONDITIONS

Code #11: Exposure Lamp Malfunction
Definition:
Lights if the lamp filament breaks or if the lamp turns on during ready or please wait modes.
Observation:
When the main switch is turned on, call service code "11" is displayed.
Points to Check:
If the lamp is lit during the ready or please wait mode, check CN103-5 on the main PCB. If it is
not lit during the copy cycle, check CN501-6 on the main board. Check the exposure lamp.
Code #12: Lamp Relay Open
Definition:
Lights if the lamp stays on longer than 15 seconds during a copy cycle.
Observation:
The lamp remains lit when the scanner returns to the home position.
Points to Check:
Check CN102-A20, CN101-A24, and CN103-5 on the main PCB.
Code #21: Abnormal Encoder Pulse
Definition:
The scanner drive motor is energized until the scanner home position sensor is blocked. If the
scanner is not in the home position when the print key is pressed, an excessive number of
pulses from the encoder are received, and code 21 is illuminated.
Observation:
The scanner is out of home position when the print key is pressed.
Points to Check:
Check that the scanner is moving properly. Check CN306-2 and CN306-3 on the optics board.
Check the scanner drive wire and the scanner drive pulley screws.
2-17
31 August 1989