Ricoh G188 Service Manual page 318

Service Call Conditions
No. Type
For the two-tray paper feed unit or one-tray paper feed unit:
For the LCT:
1.
2.
No. Type
Tray 4 error (Paper Feed Unit or LCT)
For the two-tray paper feed unit or one-tray paper feed unit
When the tray lift motor is turned on, the upper limit is not detected
within 10 seconds.
For the LCT
504
If the upper or lower limit is not detected within 8 seconds when the tray
B
-01
lift motor is turned on to lift up or lower the tray
1.
2.
No. Type
504
B Tray 4 error (Paper Feed Unit or LCT)
-02
G188/G189
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective tray lift motor or connector disconnection
Defective lift sensor or connector disconnection
Defective stack transport clutch or connector disconnection
Defective tray motor or connector disconnection
Defective end fence home position sensor or connector
disconnection
Check the cable connections.
Check and/or replace the defective component.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Defective tray lift motor or connector disconnection
Defective lift sensor or connector disconnection
Check the cable connections.
Check and/or replace the defective component.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
3-22 SM Appendix