• Code: 021-0220-05
• Description: Developing Screw rotation detection error
• Causes: The difference between the maximum and the minimum of sampling values detected by the ATR Sensor (M) in the Developing Assembly (M) was 12 or less during rotation of the Developing Screw.
• Remedy: - Harness between the Feed/Drum Driver PCB (UN2/J225) and the Developing Motor (M) (M6/ J6013) - Harnesses connecting the Front Driver PCB (UN3/J306), the Drawer Unit (J755) and the Process Unit Relay PCB (UN20/J607) - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5094/5P) and the ATR Sensor (M) (TS6/J6116) - Developing Motor (M) (M6) - Developing Assembly (M) - Feed/Drum Driver PCB (UN2) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 021-0300-05
• Description: Developing Motor error
• Causes: Lock signal error of the Developing Motor (C) was detected consecutively.
• Remedy: - Harness between the Feed/Drum Driver PCB (UN2/J225) and the Developing Motor (C) (M7/ J6012) - Developing Motor (C) (M7) - Developing Assembly (C) - Feed/Drum Driver PCB (UN2) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Turn the gears of the Developing Assembly by hand. If it does not turn, replace the Developing Assembly. 2. Check/replace the related harness/cable, connector and parts.

• Code: 021-0320-05
• Description: Developing Screw rotation detection error
• Causes: The difference between the maximum and the minimum of sampling values detected by the ATR Sensor (C) in the Developing Assembly (C) was 12 or less during rotation of the Developing Screw.
• Remedy: - Harness between the Feed/Drum Driver PCB (UN2/J225) and the Developing Motor (C) (M7/ J6012) - Harnesses connecting the Front Driver PCB (UN3/J306), the Drawer Unit (J755) and the Process Unit Relay PCB (UN20/J607) - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5095/5P) and the ATR Sensor (C) (TS7/J6118) - Developing Motor (C) (M7) - Developing Assembly (C) - Feed/Drum Driver PCB (UN2) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 021-0400-05
• Description: Developing Motor error
• Causes: Lock signal error of the Developing Motor (Bk) was detected consecutively.
• Remedy: [Related parts] R1.00 - Harness between the Feed/Drum Driver PCB (UN2/J225) and the Developing Motor (Bk) (M8/ J6011) - Developing Motor (Bk) (M8) - Developing Assembly (Bk) - Feed/Drum Driver PCB (UN2) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Turn the gears of the Developing Assembly by hand. If it does not turn, replace the Developing Assembly. 2. Check/replace the related harness/cable, connector and parts.

• Code: 021-0420-05
• Description: Developing Screw rotation detection error
• Causes: The difference between the maximum and the minimum of sampling values detected by the ATR Sensor (Bk) in the Developing Assembly (Bk) was 12 or less during rotation of the Developing Screw.
• Remedy: [Related parts] R1.01 - Harness between the Feed/Drum Driver PCB (UN2/J225) and the Developing Motor (Bk) (M8/ J6011) - Harnesses connecting the Front Driver PCB (UN3/J306), the Drawer Unit (J755) and the Process Unit Relay PCB (UN20/J607) - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5096/5P) and the ATR Sensor (Bk) (TS8/J6120) - Developing Motor (Bk) (M8) - Developing Assembly (Bk) - Feed/Drum Driver PCB (UN2) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 025-0100-05
• Description: Toner Bottle Motor error
• Causes: Rotation error of the Toner Bottle Motor (Y) was detected.
• Remedy: [Related parts] R1.00 - Harness between the Feed/Drum Driver PCB (UN2/J211) and the Bottle Motor (Y) (M9/J2111) - Harness between the Feed/Drum Driver PCB (UN2/J212) and the Toner Sensor Relay PCB (Y) (UN39/J1400) - Harness between the Toner Sensor Relay PCB (Y) (UN39/J1401) and the Bottle Rotation Sensor (Y) (PS60/J6035) - Bottle Rotation Sensor (Y) (PS60) - Bottle Motor (Y) (M9) - Toner Bottle (Y) - Set-on Hopper Assembly - Toner Sensor Relay PCB (Y) (UN39) - Feed/Drum Driver PCB (UN2) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Turn the Toner Bottle counterclockwise by hand, and if turning becomes heavy, check/replace the Toner Bottle. 2. Turn the Bottle Drive Gear of the Set-on Hopper Assembly by hand, and if turning becomes heavy, check/replace the assembly. 3. Check/replace the related harness/cable, connector and parts.

• Code: 025-0150-05
• Description: Hopper Motor error
• Causes: The ATR Sensor (Y) consecutively detected that the output (Vsig_ind) was 40 or less.
• Remedy: [Related parts] R1.00 - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5093/5P) and the ATR Sensor (Y) (TS5/J6114) - Developing Assembly (Y) - Set-on Hopper Assembly - Process Unit Relay PCB (UN20) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 025-0151-05
• Description: Hopper Motor error
• Causes: The ATR Sensor (Y) consecutively detected that the output (Vsig_ind) was 231 or higher.
• Remedy: [Related parts] R1.00 - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5093/5P) and the ATR Sensor (Y) (TS5/J6114) - Developing Assembly (Y) - Set-on Hopper Assembly - Process Unit Relay PCB (UN20) [Remedy] Check/replace the related harness/cable, connector and parts.