Ricoh AP-C3, Field Service Manual, Page: 808 / 1334

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
504 B
Tray 4 error (Paper Feed Unit or LCT)
This SC is generated if the following condition occurs.
For the two-tray paper feed unit
When the tray lift motor is turned on, the upper limit is not detected within 15
seconds.
For the LCT
If the upper or lower limit is not detected within 8 seconds when the tray lift motor
is turned on to lift up or lower the tray.
This SC is generated too if the following condition occurs 3 consecutive times.
For the two-tray paper feed unit
When the tray lowers, the tray lift sensor does not go off within 1.5 sec.
For the LCT
If the upper limit does not go off for 1.5 seconds even the tray lift motor turns on to
lower the tray after the upper limit has been detected at power on.
For the two-tray paper feed unit:
• Defective tray lift motor or connector disconnection
• Defective lift sensor or connector disconnection
For the LCT:
• Defective stack transport clutch or connector disconnection
• Defective tray motor or connector disconnection
• Defective end fence home position sensor or connector disconnection
• Defective upper limit sensor or connector disconnection
• Defective tray lift motor or connector disconnection
1. Check the cable connections.
2. Check and/or replace the defective component.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
505 B Tray 5 error (Optional Paper Feed Unit or LCT)
6. Troubleshooting
806