Ricoh D143 Field Service Manual page 846

6. Troubleshooting
No. Type
720
B
-70
No. Type
720
B
-71
844
Details (Symptom, Possible Cause, Troubleshooting Procedures)
1000/2000/3000-sheet (booklet) finisher: Tray lift motor error
The 1st detection failure issues a jam error, and the 2nd failure issues this SC
code.
The upper tray paper height sensor does not change its status with the specified
time after the tray raises or lowers.
• Motor overload
• Loose connection of the shift tray motor
• Defective shift tray motor
1. Check the connections to the shift tray motor.
2. Replace the shift tray motor.
Details (Symptom, Possible Cause, Troubleshooting Procedures)
Finisher Tray 1 shift motor error
The shift roller HP sensor of the upper tray does not activate within the prescribed
time after the shift tray starts to move toward or away from the home position. The
1st detection failure issues a jam error, and the 2nd failure issues this SC code.
• Shift tray HP sensor of the upper tray disconnected, defective
• Shift tray motor of the upper tray is disconnected, defective
• Shift tray motor of the upper tray overloaded due to obstruction
1. Check the connections and cables for the components mentioned above.
2. Check for blockages in shift motor mechanism.
3. Replace the shift tray HP sensor and/or shift motor
4. Replace the finisher main board.