Description: Backup memory data problem (optional 3000-sheet document finisher) Read and write data does not match.
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.
Code: 8920
Description: Backup memory data problem (optional mail box of 3000-sheet document finisher) Read and write data does not match.
Causes: Poor contact in the connector terminals. Defective mail box main PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector on the mail box main PWB and the connector YC7 on the finisher main PWB, and the continuity across the connector terminals. Repair or replace if necessary. Defective mail box main PWB. Replace the mail box main PWB and check for correct operation.
Code: 8930
Description: Backup memory data problem (optional centerfold unit of 3000-sheet document finisher) Read and write data does not match.
Causes: Poor contact in the connector terminals. Defective centerfold main PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector on the centerfold main PWB and the connector YC5 on the finisher main PWB, and the continuity across the connector terminals. Repair or replace if necessary. Defective centerfold main PWB. Replace the centerfold main PWB and check for correct operation.
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.
Code: F010
Description: Main PWB checksum error
Causes: Defective main PWB.
Remedy: Defective main PWB. Replace the main PWB and check for correct operation.
Code: F020
Description: Memory checksum error
Causes: Defective main PWB.
Remedy: Defective main PWB. Replace the main PWB and check for correct operation. Defective expansion memory. Replace the expansion memory and check for correct operation.