• Code: C8140
• Description: Main tray problem (optional 3000sheet document finisher) The main tray is not detected by the main tray top limit detection sensor or the main tray capacity detection sensor within 20 s since the tray has started ascending. The main tray upper limit detection sensor or the main tray load detection sensor is not detected to be turned off in 20 s after the main tray has descended. The main tray low limit detection sensor is not detected to be turned on in 20 s after the main tray has descended. During main tray ascent, the main tray upper limit detection sensor or the main tray load detection sensor stays on for more than 2 s.
• Causes: Poor contact in the connector terminals. Defective main tray motor. Defective main tray upper limit detection sensor/main tray load detection sensor/main tray lower limit detection sensor. Defective finisher main PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC6 on the finisher main PWB and the connector on the main tray motor, and the continuity across the connector terminals. Repair or replace if necessary. Defective main tray motor. Replace the main tray motor. Defective main tray upper limit detection sensor/main tray load detection sensor/main tray lower limit detection sensor. Replace the sensor. Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: C8140
• Description: Tray elevation motor problem (optional document finisher) When the tray elevation motor is driving, the ON status of the tray lower limit sensor or surface view sensor cannot be detected even if a specified time has elapsed.
• Causes: The tray elevation motor connector makes poor contact. The tray elevation motor malfunctions. The tray lower limit sensor/push paper sensor/surface view sensor connector makes poor contact. Defective tray lower limit sensor/ push paper sensor/ surface view sensor. Defective finisher main PWB.
• Remedy: The tray elevation motor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. The tray elevation motor malfunctions. Replace the tray elevation motor. The tray lower limit sensor/push paper sensor/surface view sensor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective tray lower limit sensor/ push paper sensor/ surface view sensor. Replace the sensor. Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: C8170
• Description: Side registration motor 1 problem (optional 3000-sheet document finisher) When operation returned to a home position is performed at the time of initial operation and a home position is not detected even if 3 s passed. Jam 88 is indicated.
• Causes: Poor contact in the connector terminals. Defective side registration motor 1. Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC2 on the internal tray PWB and the connector on side registration motor 1, and the continuity across the connector terminals. Repair or replace if necessary. Defective side registration motor 1. Replace side registration motor 1. Defective PWB. Replace the internal tray PWB or finisher main PWB and check for correct operation.

• Code: C8170
• Description: Adjustment motor problem (optional document finisher) When the adjustment motor is driving, the ON status of the adjustment home position sensor cannot be detected even if a specified time has elapsed. When adjustment operation starts, the ON status of the adjustment home position sensor is not detected.
• Causes: The adjustment motor connector makes poor contact. Defective adjustment motor. The adjustment home position sensor connector makes poor contact. Defective adjustment home position sensor. Defective finisher main PWB.
• Remedy: The adjustment motor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective adjustment motor. Replace adjustment motor. The adjustment home position sensor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective adjustment home position sensor. Replace the adjustment home position sensor. Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: C8170
• Description: Finisher front side registration motor problem (optional built-in finisher) When the front-side registration home-position sensor is turned on during initialization, the sensor did not turn on while it has moved by 106 pulses. When the front-side registration home-position sensor is turned off during initialization, the sensor did not turn on in 3 s.
• Causes: The front side registration motor connector makes poor contact. Defective front side registration motor. The front side registration home position sensor connector makes poor contact. Defective front side registration home position sensor. Defective finisher control PWB.
• Remedy: The front side registration motor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective front side registration motor. Replace front side registration motor. The front side registration home position sensor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective front side registration home position sensor. Replace the front side registration home position sensor. Defective finisher control PWB. Replace the finisher control PWB and check for correct operation.

• Code: C8180
• Description: Side registration motor 2 problem (optional 3000-sheet document finisher) When operation returned to a home position is performed at the time of initial operation and a home position is not detected even if 3 s passed. Jam 88 is indicated.
• Causes: Poor contact in the connector terminals. Defective side registration motor 2. Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC8 on the internal tray PWB and the connector of side registration motor 2, and the continuity across the connector terminals. Repair or replace if necessary. Defective side registration motor 2. Replace side registration motor 2. Defective PWB. Replace the internal tray PWB or finisher main PWB and check for correct operation.

• Code: C8180
• Description: Finisher rear side registration motor problem (optional built-in finisher) When the rear-side registration home-position sensor is turned on during initialization, the sensor did not turn on while it has moved by 106 pulses. When the rear-side registration home-position sensor is turned off during initialization, the sensor did not turn on in 3 s.
• Causes: The rear side registration motor connector makes poor contact. Defective rear side registration motor. The rear side registration home position sensor connector makes poor contact. Defective rear side registration home position sensor. Defective finisher control PWB.
• Remedy: The rear side registration motor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective rear side registration motor. Replace rear side registration motor. The rear side registration home position sensor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective rear side registration home position sensor. Replace the rear side registration home position sensor. Defective finisher control PWB. Replace the finisher control PWB and check for correct operation.

• Code: C8190
• Description: Finisher trailing edge registration motor problem (optional built-in finisher) When the trailing edge registration home-position sensor is turned on during initialization, the sensor did not turn on while it has moved by 106 pulses. When the trailing edge registration home-position sensor is turned off during initialization, the sensor did not turn on in 3 s.
• Causes: The trailing edge registration motor connector makes poor contact. Defective trailing edge registration motor. The trailing edge registration home position sensor connector makes poor contact. Defective trailing edge registration home position sensor. Defective finisher control PWB.
• Remedy: The trailing edge registration motor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective trailing edge registration motor. Replace trailing edge registration motor. The trailing edge registration home position sensor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective trailing edge registration home position sensor. Replace the trailing edge registration home position sensor. Defective finisher control PWB. Replace the finisher control PWB and check for correct operation.