• Code: 412-0001-04
• Description: Fan error
• Causes: Rotation of fan was detected after the stop signal for the Scanner Unit Cooling Fan was transmitted.
• Remedy: [Related parts] R1.00 - Harness between the Reader Controller PCB (UN1/J103) and the Scanner Unit Cooling Fan (FM1/J125) - Scanner Unit Cooling Fan (FM1) - Reader Controller PCB (UN1) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the Reader Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. - Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMRES

• Code: 412-0002-04
• Description: Fan error
• Causes: Stop of fan was detected after rotation signal for the Scanner Unit Cooling Fan was transmitted.
• Remedy: [Related parts] R1.00 - Harness between the Reader Controller PCB (UN1/J103) and the Scanner Unit Cooling Fan (FM1/J125) - Scanner Unit Cooling Fan (FM1) - Reader Controller PCB (UN1) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the Reader Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. - Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMRES

• Code: 412-0005-04
• Description: Fan error
• Causes: Rotation of fan was detected after the stop signal for the DADF Cooling Fan was transmitted.
• Remedy: [Related parts] R1.00 - Harness between the DADF Driver PCB (UN03/J408) and the DADF Cooling Fan 2 (FM2/J620) - DADF Cooling Fan 1 (FM1) - DADF Cooling Fan 2 (FM2) - DADF Driver PCB (UN03) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 412-0006-04
• Description: Fan error
• Causes: Stop of fan was detected after rotation signal for the DADF Cooling Fan was transmitted.
• Remedy: [Related parts] R1.00 - Harness between the DADF Driver PCB (UN03/J408) and the DADF Cooling Fan 2 (FM2/J620) - DADF Cooling Fan 1 (FM1) - DADF Cooling Fan 2 (FM2) - DADF Driver PCB (UN03) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 423-0001-04
• Description: SDRAM error in the Reader Controller PCB
• Causes: Either an access error to SDRAM in the Reader Controller PCB or an error at data inspection was detected.
• Remedy: Replace the Reader Controller PCB (UN1). [Reference] Before replacing the Reader Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. - Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> RSRAMRES

• Code: 503-0001-02
• Description: Error in communication between the Finisher - Saddle Stitcher (Finisher-X1)
• Causes: Communication failed between the Finisher and the Saddle Stitcher
• Remedy: [Related parts] - Harnesses from the Finisher Controller PCB to the Saddle Stitcher Controller PCB - Finisher Controller PCB (PBA101) - Saddle Stitcher Controller PCB (PBA201) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] When replacing the Finisher Controller PCB, refer to "Adjustments> Adjustment when Replacing the Parts" in the Service Manual.

• Code: 503-0002-02
• Description: Error in communication between the Finisher - Saddle Stitcher (Finisher-X1)
• Causes: Communication failed between the Finisher and the Saddle Stitcher
• Remedy: [Related parts] - Harnesses from the Finisher Controller PCB to the Saddle Stitcher Controller PCB - Finisher Controller PCB (PBA101) - Saddle Stitcher Controller PCB (PBA201) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] When replacing the Finisher Controller PCB, refer to "Adjustments> Adjustment when Replacing the Parts" in the Service Manual.

• Code: 503-0021-02
• Description: a. Error in communication between the Finisher - Insertion Unit (Finisher-X1/Document Insertion Unit-N1) b. Error in communication between the Finisher and Saddle Unit (Finisher-V)
• Causes: a. Communication failed between Finisher - Insertion Unit b. Communication error between the Finisher Controller PCB and the Saddle Stitcher Controller PCB was detected. (Command transmission error)
• Remedy: a. STAPLE FIN-X1/BOOKLET FIN-X1 [Related parts] - Harnesses from the Finisher Controller PCB to the Insertion Unit Controller PCB - Finisher Controller PCB (PBA101) - Insertion Unit Controller PCB(PCB3) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] - When replacing the Finisher Controller PCB, refer to "Adjustment> Action on parts replacement" in the Service Manual. - When replacing the Insertion Unit Controller PCB, refer to "Adjustment> Adjustment at Time of Parts Replacement" in the Service Manual. b. STAPLE FIN-V/BOOKLET FIN-V [Related parts] - Harnesses and connectors from the Finisher Controller PCB to the Saddle Stitcher Controller PCB - Finisher Controller PCB (PCB101) - Saddle Stitcher Controller PCB (PCB201) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check/replace the harness and connector between the Finisher Controller PCB and the Saddle Stitcher Controller PCB. 2. Replace the Finisher Controller PCB. [Reference] When replacing the Finisher Controller PCB, refer to "Adjustment> When Replacing the Parts" in the Service Manual. 3. Replace the Saddle Stitcher Controller PCB.