Description: Finisher stapler problem (optional built-in finisher) The stapler home position sensor does not change state from nondetection to detection within 200 ms of the start of stapler motor counterclockwise (forward) rotation. During initialization, the stapler home position sensor does not change state from non-detection to detection within 600 ms of the start of stapler motor clockwise (reverse) rotation.
Causes: The stapler connector makes poor contact. The stapler is blocked with a staple. The stapler is broken. Defective finisher control PWB.
Remedy: The stapler connector makes poor contact. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. The stapler is blocked with a staple. Remove the stapler cartridge, and check the cartridge and the stapling section of the stapler. The stapler is broken. Replace the front stapler and check for correct operation. Defective finisher control PWB. Replace the finisher control PWB and check for correct operation.
Code: C8440
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) Reading from or writing to EEPROM cannot be performed.
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: C9000
Description: Optional DP communication problem A communication error is detected.
Causes: Poor contact in the connector terminals. Defective DP main PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector YC24 and YC31 on the engine PWB and the connector of the DP, and the continuity across the connector terminals. Repair or replace if necessary. Defective DP main PWB. Replace the DP main PWB and check for correct operation.
Code: C9060
Description: DP EEPROM error (optional DP) Read and write data does not match. Data in the specified area of the backup memory does not match the specified values.
Causes: Defective DP main PWB. Device damage of EEPROM.
Remedy: Defective DP main PWB. Replace the DP main PWB and check for correct operation. Device damage of EEPROM. Contact the Service Administrative Division.
Code: F000
Description: Operation panel PWB communication error
Causes: Defective main PWB. Defective operation panel PWB.
Remedy: Defective main PWB. Replace the main PWB and check for correct operation. Defective operation panel PWB. Replace the operation panel PWB and check for correct operation.