• Code: E020-01C0-05
• Description: Error in take-up of Sealing Member (Y)
• Causes: The patch output value (SigR) failed to be 230 or less during initialization of the Drum Unit (Y).
• Remedy: [Remedy] Check/replace the Drum Unit (Y).

• Code: E020-01F0-05
• Description: Error in toner density (Y) at communication failure of the Drum Unit Memory PCB (Y)
• Causes: Communication between the DC Controller PCB and the Drum Unit Memory PCB (Y) was not available, and the output value (SigR) of the ATR Sensor (Y) did not fall within the range from 50 or higher to 800 or less for 2 consecutive times.
• Remedy: [Related parts] R1.00 - Harness between the DC Controller PCB (UN04/J160) and the Drum Unit Relay PCB (Y) (UN08/ J6001) - Drum Unit (Y) - DC Controller PCB (UN04) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. If the Drum Unit Memory PCB (Y) is soiled, clean it with a blower. 2. 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: E020-02A8-05
• Description: ATR Sensor (M) output error
• Causes: The output value of the ATR Sensor (M) in the Drum Unit (M) did not fall within the range from 10 or higher to 990 or less for 2 consecutive times during printing.
• Remedy: [Related parts] R1.00 - Harness between the ATR Sensor (M) (UN35/J6022) and the Drum Unit Memory PCB (M) (UN13/ J6012) - Harness between the DC Controller PCB (UN04/J160) and the Drum Unit Relay PCB (M) (UN09/ J6002) - ATR Sensor (M) (UN35) - Drum Unit (M) - DC Controller PCB (UN04) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. If the Drum Unit Memory PCB (M) is soiled, clean it with a blower. 2. 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: E020-02B8-05
• Description: ATR Sensor (M) output error
• Causes: a. The output value of the ATR Sensor (M) in the Drum Unit (M) did not fall within the range from 10 or higher to 990 or less for 2 consecutive times at initialization. b. The output value did not exceed 140 although the control voltage of the ATR Sensor (M) in the Drum Unit (M) was increased to 248 or higher, or it did not fall below 140 although the voltage was decreased to 8 at initialization.
• Remedy: [Related parts] R1.00 - Harness between the ATR Sensor (M) (UN35/J6022) and the Drum Unit Memory PCB (M) (UN13/ J6012) - Harness between the DC Controller PCB (UN04/J160) and the Drum Unit Relay PCB (M) (UN09/ J6002) - ATR Sensor (M) (UN35) - Drum Unit (M) - DC Controller PCB (UN04) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. If the Drum Unit Memory PCB (M) is soiled, clean it with a blower. 2. 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: E020-02C0-05
• Description: Error in take-up of Sealing Member (M)
• Causes: The patch output value (SigR) failed to be 230 or less during initialization of the Drum Unit (M).
• Remedy: Check/replace the Drum Unit (M).

• Code: E020-02F0-05
• Description: Error in toner density (M) at communication failure of the Drum Unit Memory PCB (M)
• Causes: Communication between the DC Controller PCB and the Drum Unit Memory PCB (M) was not available, and the output value (SigR) of the ATR Sensor (M) did not fall within the range from 50 or higher to 800 or less for 2 consecutive times.
• Remedy: [Related parts] R1.00 - Harness between the DC Controller PCB (UN04/J160) and the Drum Unit Relay PCB (M) (UN09/ J6002) - Drum Unit (M) - DC Controller PCB (UN04) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. If the Drum Unit Memory PCB (M) is soiled, clean it with a blower. 2. 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: E020-03A8-05
• Description: ATR Sensor (C) output error
• Causes: The output value of the ATR Sensor (C) in the Drum Unit (C) did not fall within the range from 10 or higher to 990 or less for 2 consecutive times during printing.
• Remedy: [Related parts] R1.00 - Harness between the ATR Sensor (C) (UN36/J6023) and the Drum Unit Memory PCB (C) (UN14/ J6013) - Harness between the DC Controller PCB (UN04/J162) and the Drum Unit Relay PCB (C) (UN10/ J6003) - ATR Sensor (C) (UN36) - Drum Unit (C) - DC Controller PCB (UN04) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. If the Drum Unit Memory PCB (C) is soiled, clean it with a blower. 2. 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: E020-03B8-05
• Description: ATR Sensor (C) output error
• Causes: a. The output value of the ATR Sensor (C) in the Drum Unit (C) did not fall within the range from 10 or higher to 990 or less for 2 consecutive times at initialization. b. The output value did not exceed 140 although the control voltage of the ATR Sensor (C) in the Drum Unit (C) was increased to 248 or higher, or it did not fall below 140 although the voltage was decreased to 8 at initialization.
• Remedy: [Related parts] R1.00 - Harness between the ATR Sensor (C) (UN36/J6023) and the Drum Unit Memory PCB (C) (UN14/ J6013) - Harness between the DC Controller PCB (UN04/J162) and the Drum Unit Relay PCB (C) (UN10/ J6003) - ATR Sensor (C) (UN36) - Drum Unit (C) - DC Controller PCB (UN04) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. If the Drum Unit Memory PCB (C) is soiled, clean it with a blower. 2. 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