Ricoh G188 Service Manual page 319

This SC is generated if the following condition occurs 3 consecutive
times.
For the two-tray paper feed unit or one-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 or one-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
1. Check the cable connections.
2. Check and/or replace the defective component.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Tray 5 error (Two-tray paper feed unit combined with the one-tray paper
feed unit)
When the tray lift motor is turned on, the upper limit is not detected
within 10 seconds.
505
B
-01
Defective tray lift motor or connector disconnection
Defective lift sensor or connector disconnection
1. Check the cable connections.
2. Check and/or replace the defective component.
SM Appendix
Service Call Conditions
3-23 G188/G189