• Code: E020 01C8
• Description: Error in take-up of Sealing Member (Y). The patch output value (SigR) failed to be 900 or less during initialization of the Developing Unit (Y).
• Remedy: [Related parts] • Harnesses from the Registration Patch Sensor Unit to the DC Controller PCB 1. Registration Patch Sensor Unit to Relay Connector (16P) (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) 2. Relay Connector (16P) to DC Controller PCB (UN04/J120) (Unit of replacement: NEW OLD SENSING HOLDER ASS'Y) • Harness between the Secondary Transfer High Voltage PCB (UN03/J501 and J502) and the DC Controller PCB (UN04/J114 and J112) (Unit of replacement: CABLE, 2ND TRNSFR. H.V. PCB) • Registration Patch Sensor Unit (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) • Developing Unit (Y) (Unit of replacement: DEVELOPING ASSEMBLY, Y) • Secondary Transfer High Voltage PCB (UN03) (Unit of replacement: 2ND TRANSFER H.V. PCB ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E020 02A8
• Description: ATR Sensor (M) output error. The output value of the ATR Sensor (M) in the Developing Unit (M) did not fall within the range between 38 and 214 for 2 consecutive times during printing.
• Remedy: [Related parts] • Harnesses from the ATR Sensor (M) to the DC Controller PCB 1. ATR Sensor (M) (UN22/J1051) to Developing Unit (M) (J1041) (Unit of replacement: CABLE, DEVELOPING) 2. Developing Unit (M) (J1041) to Relay Connector (4P) (Unit of replacement: CABLE, RELAY) 3. Relay Connector (4P) to DC Controller PCB (UN04/J128) (Unit of replacement: CABLE, SENSOR) • Developing Unit (M) (Unit of replacement: DEVELOPING ASSEMBLY, M) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E020 02B8
• Description: ATR Sensor (M) output error. The output value did not exceed 120 although the control voltage of the ATR Sensor (M) in the Developing Unit (M) was increased to 192 or higher, or it did not fall below 120 although the voltage was decreased to 42 at initialization.
• Remedy: [Related parts] • Harnesses from the ATR Sensor (M) to the DC Controller PCB 1. ATR Sensor (M) (UN22/J1051) to Developing Unit (M) (J1041) (Unit of replacement: CABLE, DEVELOPING) 2. Developing Unit (M) (J1041) to Relay Connector (4P) (Unit of replacement: CABLE, RELAY) 3. Relay Connector (4P) to DC Controller PCB (UN04/J128) (Unit of replacement: CABLE, SENSOR) • Developing Unit (M) (Unit of replacement: DEVELOPING ASSEMBLY, M) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E020 02C8
• Description: Error in take-up of Sealing Member (M). The patch output value (SigR) failed to be 900 or less during initialization of the Developing Unit (M).
• Remedy: [Related parts] • Harnesses from the Registration Patch Sensor Unit to the DC Controller PCB 1. Registration Patch Sensor Unit to Relay Connector (16P) (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) 2. Relay Connector (16P) to DC Controller PCB (UN04/J120) (Unit of replacement: NEW OLD SENSING HOLDER ASS'Y) • Harness between the Secondary Transfer High Voltage PCB (UN03/J501 and J502) and the DC Controller PCB (UN04/J114 and J112) (Unit of replacement: CABLE, 2ND TRNSFR. H.V. PCB) • Registration Patch Sensor Unit (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) • Developing Unit (M) (Unit of replacement: DEVELOPING ASSEMBLY, M) • Secondary Transfer High Voltage PCB (UN03) (Unit of replacement: 2ND TRANSFER H.V. PCB ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E020 03A8
• Description: ATR Sensor (C) output error. The output value of the ATR Sensor (C) in the Developing Unit (C) did not fall within the range between 38 and 214 for 2 consecutive times during printing.
• Remedy: [Related parts] • Harnesses from the ATR Sensor (C) to the DC Controller PCB 1. ATR Sensor (C) (UN23/J1052) to Developing Unit (C) (J1042) (Unit of replacement: CABLE, DEVELOPING) 2. Developing Unit (C) (J1042) to Relay Connector (4P) (Unit of replacement: CABLE, RELAY) 3. Relay Connector (4P) to DC Controller PCB (UN04/J128) (Unit of replacement: CABLE, SENSOR) • Developing Unit (C) (Unit of replacement: DEVELOPING ASSEMBLY, C) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E020 03B8
• Description: ATR Sensor (C) output error. The output value did not exceed 120 although the control voltage of the ATR Sensor (C) in the Developing Unit (C) was increased to 192 or higher, or it did not fall below 120 although the voltage was decreased to 42 at initialization.
• Remedy: [Related parts] • Harnesses from the ATR Sensor (C) to the DC Controller PCB 1. ATR Sensor (C) (UN23/J1052) to Developing Unit (C) (J1042) (Unit of replacement: CABLE, DEVELOPING) 2. Developing Unit (C) (J1042) to Relay Connector (4P) (Unit of replacement: CABLE, RELAY) 3. Relay Connector (4P) to DC Controller PCB (UN04/J128) (Unit of replacement: CABLE, SENSOR) • Developing Unit (C) (Unit of replacement: DEVELOPING ASSEMBLY, C) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E020 03C8
• Description: Error in take-up of Sealing Member (C). The patch output value (SigR) failed to be 900 or less during initialization of the Developing Unit (C).
• Remedy: [Related parts] • Harnesses from the Registration Patch Sensor Unit to the DC Controller PCB 1. Registration Patch Sensor Unit to Relay Connector (16P) (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) 2. Relay Connector (16P) to DC Controller PCB (UN04/J120) (Unit of replacement: NEW OLD SENSING HOLDER ASS'Y) • Harness between the Secondary Transfer High Voltage PCB (UN03/J501 and J502) and the DC Controller PCB (UN04/J114 and J112) (Unit of replacement: CABLE, 2ND TRNSFR. H.V. PCB) • Registration Patch Sensor Unit (Unit of replacement: REGISTRATION SENSOR ASSEMBLY) • Developing Unit (C) (Unit of replacement: DEVELOPING ASSEMBLY, C) • Secondary Transfer High Voltage PCB (UN03) (Unit of replacement: 2ND TRANSFER H.V. PCB ASSEMBLY) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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: E020 04A8
• Description: ATR Sensor (Bk) output error. The output value of the ATR Sensor (Bk) in the Developing Unit (Bk) did not fall within the range between 38 and 214 for 2 consecutive times during printing.
• Remedy: [Related parts] • Harnesses from the ATR Sensor (Bk) to the DC Controller PCB 1. ATR Sensor (Bk) (UN24/J1053) to Developing Unit (Bk) (J1043) (Unit of replacement: CABLE, DEVELOPING) 2. Developing Unit (Bk) (J1043) to Relay Connector (4P) (Unit of replacement: CABLE, RELAY) 3. Relay Connector (4P) to DC Controller PCB (UN04/J128) (Unit of replacement: CABLE, SENSOR) • Developing Unit (Bk) (Unit of replacement: DEVELOPING ASSEMBLY, BK) • DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [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