Code :

Code: C8240
Description: Rear clincher problem • During initialization, the rear clincher is not detected in the home position within 500 ms after the rear clincher returns to the home position. JAM90 is indicated the first time this problem occurs. If the problem occurs after initialization when the front cover is opened and closed, the problem is in the rear clincher. • When the rear clincher is operated from the home position, the rear clincher home position sensor does not turn off within 500 ms.
Causes: Loose connection of the rear clincher motor connector. Malfunction of the rear clincher motor. Malfunction of the rear clincher home position sensor. Loose connection of the rear clincher home position sensor connector. Defective finisher main PCB.
Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the rear clincher motor and check for correct operation. Replace the rear clincher home position sensor and check for correct operation. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the finisher main PCB and check for correct operation.