• Code: E720 0001
• Description: Error due to non-compatible Finisher. A finisher which cannot be connected to the host machine was detected
• Remedy: [Remedy] Connect the finisher (INNER FINISHER-G1, BOOKLET/STAPLE FINISHER-U1) for this model

• Code: E730 A006
• Description: PDL communication error. Response from PDL could not be detected
• Remedy: [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Select "Settings/Registration> Function Settings> Printer> Printer Settings> Utility> Initialize Printer", and execute PDL reset processing. 2. Reinstall the system software. 3. Replace the Main Controller PCB (UN05). (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY)

• Code: E730 A007
• Description: Mismatch of PDL version. Version of the host machine control software and version of PDL control software were different
• Remedy: [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Reinstall the system software. 2. Replace the Main Controller PCB (UN05). (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY)

• Code: E730 B013
• Description: PDL embedded font error. Font data was corrupted.
• Remedy: [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Reinstall the system software. 2. Replace the Main Controller PCB (UN05). (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY)

• Code: E732 0001
• Description: Scanner communication error. DDI-S communication error was detected.
• Remedy: [Related parts] • Flat Cable between the Main Controller PCB (UN05/J33) and the Scanner Unit (Unit of replacement: CABLE, FLAT) • Scanner Unit (Unit of replacement: LASER SCANNER ASSEMBLY) • Main Controller PCB (UN05) (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: E732 0010
• Description: Scanner communication error. DDI-S communication error (Vsync detection error) was detected.
• Remedy: [Related parts] • Flat Cable between the Main Controller PCB (UN05/J33) and the Scanner Unit (Unit of replacement: CABLE, FLAT) • Scanner Unit (Unit of replacement: LASER SCANNER ASSEMBLY) • Main Controller PCB (UN05) (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY) [Remedy] Check/replace the related harness/cable, connector and parts

• Code: E733 0000
• Description: Printer communication error. A communication error between the DC Controller PCB and the Main Controller PCB was detected at startup.
• Remedy: [Related parts] • Harness between the DC Controller PCB (UN04/J110) and the Main Controller PCB (UN05/J18) (Unit of replacement: DDIP, CABLE) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) • Main Controller PCB (UN05) (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check the harness between the DC Controller PCB and the Main Controller PCB. 2. Turn ON the power, and check if the initialization is executed at startup. 2-1. If the initialization is not executed, replace the DC Controller PCB. 2-2. If the initialization is executed, replace the Main Controller PCB. [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

• Code: E733 0001
• Description: Printer communication error. • DDI-P communication error • DDI-L communication error (parity error)
• Remedy: [Related parts] • Harness between the DC Controller PCB (UN04/J110) and the Main Controller PCB (UN05/J18) (Unit of replacement: DDIP, CABLE) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) • Main Controller PCB (UN05) (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check the harness between the DC Controller PCB and the Main Controller PCB. 2. Turn ON the power, and check if the initialization is executed at startup. 2-1. If the initialization is not executed, replace the DC Controller PCB. 2-2. If the initialization is executed, replace the Main Controller PCB. [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