• Code: 061-0002-05
• Description: Potential Sensor offset error
• Causes: It was detected that the result of offset adjustment of the Potential Sensor was +/- 30 V or more.
• Remedy: [Related parts] R1.00 - Harness between the Multi-purpose Tray Pickup Driver PCB (UN97/J1355) and the Potential Control PCB (UN29/J3530) - Harness between the Potential Control PCB (UN29/J3531) and the Potential Sensor (UN160/ J8073) - Potential Sensor (UN160) - Potential Control PCB (UN29) - Multi-purpose Tray Pickup Driver PCB (UN97) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check the installation of the electrode for checking the Potential Sensor. 2. Check/replace the related harness/cable, connector and parts. [Reference] After replacement of the Potential Control PCB Unit, execute offset adjustment of the Potential Sensor by referring to "Parts Replacement and Cleaning Procedure> Image Formation System> Potential Sensor> When Replacing the Potential Control PCB" in the Service Manual.

• Code: 061-0003-05
• Description: Potential control dark area potential error
• Causes: It was detected that the drum surface potential Vd measured at potential control ended upper/lower limit error against Vgrid.
• Remedy: [Related parts] R1.00 - Harness between the Multi-purpose Tray Pickup Driver PCB (UN97/J1354) and the Cleaning Pre-exposure LED (Bk) (LED1/J7026) - Harness between the Laser Interface PCB (UN106/J76) and the Laser Scanner Unit (Bk) (J8064) - Cleaning Pre-exposure LED (Bk) (LED1) - Primary Charging Assembly - Laser Scanner Unit (Bk) - Multi-purpose Tray Pickup Driver PCB (UN97) - Laser Interface PCB (UN106) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 061-0004-05
• Description: Potential control laser intensity error
• Causes: It was detected that the potential difference of the laser power (LPW60h to LPWE0h) was 100 V or less when measuring VL at potential control.
• Remedy: [Related parts] R1.00 - Harness between the Laser Interface PCB (UN106/J76) and the Laser Scanner Unit (Bk) (J8064) - Laser Scanner Unit (Bk) - Laser Interface PCB (UN106) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Clean the Dustproof Glass. 2. Check/replace the related harness/cable, connector and parts.

• Code: 061-0005-05
• Description: Cleaning Pre-exposure LED (Bk) activation error
• Causes: It was detected that the drum surface potential was 350 V or less after charging high voltage was turned OFF at last rotation.
• Remedy: [Related parts] R1.00 - Harness between the Multi-purpose Tray Pickup Driver PCB (UN97/J1354) and the Cleaning Pre-exposure LED (Bk) (LED1/J7026) - Cleaning Pre-exposure LED (Bk) (LED1) - Drum Unit (Bk) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Clean the Dustproof Glass. 2. Check/replace the related harness/cable, connector and parts.

• Code: 064-1000-05
• Description: Primary charging DC output error (CL)
• Causes: Power supply of 24 V was detected while primary charging DC was being stopped.
• Remedy: [Related parts] R1.00 - Harness between the Relay PCB (UN7/J1816) and the Primary Charging High Voltage PCB (CL) (UN38/J3021) - Harness between the DC Controller PCB (UN2/J1253) and the Primary Charging High Voltage PCB (CL) (UN38/J3040) - Primary Charging High Voltage PCB (CL) (UN38) - Relay PCB (UN7) - 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

• Code: 064-1001-05
• Description: Developing DC output error (CL)
• Causes: Power supply of 24 V was detected while developing DC was being stopped.
• Remedy: [Related parts] R1.00 - Harness between the Relay PCB (UN7/J1816) and the Primary Charging High Voltage PCB (CL) (UN38/J3021) - Harness between the Relay PCB (UN7/J1808) and the Developing High Voltage PCB (CL) (UN40/J3041) - Harness between the DC Controller PCB (UN2/J1253) and the Primary Charging High Voltage PCB (CL) (UN38/J3040) - Primary Charging High Voltage PCB (CL) (UN38) - Relay PCB (UN7) - 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

• Code: 064-1100-05
• Description: Primary charging AC bias (Y) high voltage output error
• Causes: It was detected that the output value of the primary charging AC bias (Y) was out of the specified range.
• Remedy: [Related parts] R1.00 - Cable between the Primary Charging High Voltage PCB (CL) (UN38/J3022) and the Resistance PCB (UN59) - Resistance PCB (UN59) - Primary Charging High Voltage PCB (CL) (UN38) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 064-1101-05
• Description: Primary charging AC (Y) high voltage output error
• Causes: It was detected that the output value of the primary charging AC (Y) was out of the specified range at open detection.
• Remedy: [Related parts] R1.00 - Cable between the Primary Charging High Voltage PCB (CL) (UN38/J3022) and the Resistance PCB (UN59) - Resistance PCB (UN59) - Primary Charging High Voltage PCB (CL) (UN38) [Remedy] Check/replace the related harness/cable, connector and parts.