Code :

Code: 750-0002-05
Description: System software error
Causes: Combination of the DC Controller software and the Toner Container CPU software was not correct.
Remedy: Reinstall the system software using SST or a USB memory.

Code: 750-0003-05
Description: System software error
Causes: Model information of the DC Controller did not match the notification from the controller.
Remedy: Reinstall the system software using SST or a USB memory.

Code: 753-0001-00
Description: Download Error
Causes: Update of the system software failed.
Remedy: Perform the following in the order while checking whether the error is cleared. 1. Turn OFF and then ON the main power. 2. Reinstall the system software using SST or a USB memory. 3. Replace the FLASH PCB, and reinstall the system software. 4. Collect debug log and contact the sales company.

Code: 804-0000-00
Description: Power Supply Cooling Fan error
Causes: It was detected that the Power Supply Cooling Fan was locked.
Remedy: [Related parts] R1.00 - Harness connecting from the Relay PCB (UN7/J412) to the Power Supply Fan 1 and Power Supply Fan 2 (FM8/J7401 and FM9/J7400) - Power Supply Fan 1 and 2 (FM8 and FM9) - Relay PCB (UN7) [Remedy] Check/replace the related harness/cable, connector and parts.

Code: 804-0001-05
Description: Pre-fixing Feed Attraction Fan error
Causes: It was detected that the Pre-fixing Feed Attraction Fan was locked.
Remedy: [Related parts] R1.00 - Harness between the Drum Driver PCB (UN6/J1908) and the Pre-fixing Feed Attraction Fan (FM1/J7159) - Pre-fixing Feed Attraction Fan (FM1) - Drum Driver PCB (UN6) [Remedy] Check/replace the related harness/cable, connector and parts.

Code: 804-0002-05
Description: Primary Charging Suction Fan error
Causes: It was detected that the Primary Charging Suction Fan was locked.
Remedy: [Related parts] R1.00 - Harness between the Multi-purpose Tray Pickup Driver PCB (UN97/J1356) and the Primary Charging Suction Fan (FM2/J7109) - Primary Charging Suction Fan (FM2) - Multi-purpose Tray Pickup Driver PCB (UN97) [Remedy] Check/replace the related harness/cable, connector and parts.

Code: 804-0003-05
Description: Primary Charging Exhaust Fan error
Causes: It was detected that the Primary Charging Exhaust Fan was locked.
Remedy: [Related parts] R1.00 - Harness between the DC Controller PCB (UN2/J1249) and the Primary Charging Exhaust Fan (FM3/J7111) - Primary Charging Exhaust Fan (FM3) - DC Controller PCB (UN2) [Remedy] Check/replace the related harness/cable, connector and parts. [Reference] Before replacing the DC 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> DSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRES