• Code: 720-0001-00
• Description: Error due to non-compatible Finisher
• Causes: Non-compatible Finisher was connected.
• Remedy: Connect either the Staple Finisher-Y1 or Saddle Stitch Finisher-Y1.

• Code: 730-C001-00
• Description: Error in HDD access
• Causes: An error occurred when accessing the HDD.
• Remedy: [Related parts] R1.00 - Harness between the Main Controller PCB and the HDD - HDD - Main Controller PCB [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Format the HDD and reinstall the system software using SST or a USB flash drive. 2. Check/replace the related harness/cable, connector and parts.

• Code: 731-3000-00
• Description: Main Controller PCB error
• Causes: Unable to recognize the SURF Board.
• Remedy: Check/replace the Main Controller PCB

• Code: 731-3001-00
• Description: Main Controller PCB error
• Causes: Failure of SURF initialization.
• Remedy: Check/replace the Main Controller PCB

• Code: 731-3002-00
• Description: Main Controller PCB error
• Causes: Failure of SURF initialization.
• Remedy: Check/replace the Main Controller PCB

• Code: 731-3015-00
• Description: Main Controller PCB error
• Causes: Video data is not transmitted to CL1-G even though there is no problem in the software.
• Remedy: Check/replace the Main Controller PCB

• Code: 732-0001-04
• Description: Communication error
• Causes: A communication error between the Reader Controller PCB and the Main Controller PCB was detected.
• Remedy: [Related parts] R1.00 - Harness between the Reader Controller PCB (UN_BO1/J109) and the Riser PCB (UN14/J4031) - Reader Controller PCB (UN_BO1) - Riser PCB (UN14) - Main Controller PCB (UN25) [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: 732-0010-00
• Description: Communication error
• Causes: A communication error between the Reader Controller PCB and the Main Controller PCB was detected.
• Remedy: [Related parts] R1.00 - Harness between the Reader Controller PCB (UN_BO1/J109) and the Riser PCB (UN14/J4031) - Reader Controller PCB (UN_BO1) - Riser PCB (UN14) - Main Controller PCB (UN25) [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