Description: Sensor adjusting problem (optional document finisher) The sensor cannot be adjusted within the specified range.
Causes: The paper entry sensor connector makes poor contact. Defective paper entry sensor. The optical path of the paper entry sensor is blocked by foreign matter. Defective finisher main PWB.
Remedy: The paper entry sensor connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Defective paper entry sensor. Replace the paper entry sensor and check for correct operation. The optical path of the paper entry sensor is blocked by foreign matter. Remove the foreign matter. Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.
Code: C8460
Description: EEPROM problem (optional document finisher) Read and write data does not match 3 times in succession.
Causes: Defective EEPROM or finisher main PWB.
Remedy: Defective EEPROM or finisher main PWB. Replace the finisher main PWB and check for correct operation.
Code: C8500
Description: Mailbox communication error (optional mailbox of 3000-sheet document finisher) Communication with the mailbox is not possible although the connection is detected.
Causes: Poor contact in the connector terminals. Defective PWB.
Remedy: Poor contact in the connector terminals. Check the connection of the connector of the mailbox and the connector YC7 on the finisher main PWB, and the continuity across the connector terminals. Repair or replace if necessary. Defective PWB. Replace the mailbox main PWB or finisher main PWB and check for correct operation.
Code: C8510
Description: Mailbox drive motor problem (optional mailbox of 3000-sheet document finisher) The motor lock signal is detected above 500 ms during driving the mailbox drive motor.
Causes: Poor contact in the connector terminals. Defective mailbox drive motor. Defective PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector YC2 on the mailbox main PWB and the connector of the mailbox drive motor, and the continuity across the connector terminals. Repair or replace if necessary. Defective mailbox drive motor. Replace the mailbox drive motor. Defective PWB. Replace the mailbox main PWB or finisher main PWB and check for correct operation.
Code: C8900
Description: Backup memory data problem (optional 3000-sheet document finisher) Read and write data does not match 3 times in succession.
Causes: Poor contact in the connector terminals. Defective finisher main PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector on the finisher main PWB and the connector of the machine, and the continuity across the connector terminals. Repair or replace if necessary. Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.
Code: C8910
Description: Backup memory data problem (optional 3000-sheet document finisher) Read and write data does not match 3 times in succession.
Causes: Poor contact in the connector terminals. Defective punch PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector on the punch PWB and the connector YC4 on the finisher main PWB, and the continuity across the connector terminals. Repair or replace if necessary. Defective punch PWB. Replace the punch PWB and check for correct operation.