• Code: 400-0003-04
• Description: Communication error
• Causes: Disconnection of the harness between the Reader Controller PCB and the DADF Driver PCB was detected.
• Remedy: [Related parts] R1.00 - Harness between the Reader Controller PCB (UN_BO1/J103) and the DADF Driver PCB (PCB1/ J401) - Harness between the Reader Controller PCB (UN_BO1/J104) and the DADF Driver PCB (PCB1/ J402) - DADF Driver PCB (PCB1) - Reader Controller PCB (UN_BO1) [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 - DADF Cooling Fan (FAN_A1) - DADF Driver PCB (PCB1) [Remedy] Check/replace the related 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 - DADF Cooling Fan (FAN_A1) - DADF Driver PCB (PCB1) [Remedy] Check/replace the related 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 (UN_BO1). [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: 490-0001-04
• Description: Different Scanner Unit model error
• Causes: A wrong Scanner Unit was installed.
• Remedy: Install the Scanner Unit for this model.

• Code: 490-0002-04
• Description: Different Scanner Unit model error
• Causes: A wrong Scanner Unit was installed.
• Remedy: Install the Scanner Unit for this model.

• Code: 490-0101-04
• Description: Different DADF model error
• Causes: A wrong DADF was installed.
• Remedy: [Related parts] R1.00 - Flat Cable between the DADF Driver PCB (PCB1/J401) and the Reader Controller PCB (UN_ BO1/J103) - DADF Driver PCB (PCB1) - Reader Controller PCB (UN_BO1) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check if the installed DADF model matches the model that was set in "COPIER> OPTION> CUSTOM> SCANTYPE". If not matched, install the appropriate DADF. 2. Check/replace the related 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: 490-0102-04
• Description: Different DADF model error
• Causes: A wrong DADF was installed.
• Remedy: [Related parts] R1.00 - Flat Cable between the DADF Driver PCB (PCB1/J401) and the Reader Controller PCB (UN_ BO1/J103) - DADF Driver PCB (PCB1) - Reader Controller PCB (UN_BO1) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check if the installed DADF model matches the model that was set in "COPIER> OPTION> CUSTOM> SCANTYPE". If not matched, install the appropriate DADF. 2. Check/replace the related 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