• Code: 020-02B9-05
• Description: ATR output error
• Causes: The ATR Sensor (M) detected 4.5 V or more of control voltage at initialization of the Developing Assembly.
• Remedy: - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5094/5P) and the ATR Sensor (M) (TS6/J6116) - Developing Assembly (M) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 020-0324-05
• Description: ATR output error
• Causes: The ATR Patch (C) detected that the output value (SigD) was below the lower limit at initialization of the Developing Assembly.
• Remedy: - Drum Unit - Developing Assembly (C) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check that the Developing Assembly and the Drum Unit are properly installed. 2. Remove soiling on the exposure window and the Drum Unit. 3. Replace the Developing Assembly and the Drum Unit.

• Code: 020-0334-05
• Description: ATR output error
• Causes: The ATR Patch (C) detected that the output value (SigD) exceeded the upper limit at initialization of the Developing Assembly.
• Remedy: - Drum Unit - Developing Assembly (C) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check that the Developing Assembly and the Drum Unit are properly installed. 2. Remove soiling on the Drum Unit. 3. Replace the Developing Assembly and the Drum Unit.

• Code: 020-03A8-05
• Description: ATR output error
• Causes: The ATR Sensor (C) detected that the output value was below the lower limit during printing.
• Remedy: - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5095/5P) and the ATR Sensor (C) (TS7/J6118) - Developing Assembly (C) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 020-03A9-05
• Description: ATR output error
• Causes: The ATR Sensor (C) detected that the output value exceeded the upper limit during printing.
• Remedy: - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5095/5P) and the ATR Sensor (C) (TS7/J6118) - Developing Assembly (C) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 020-03B8-05
• Description: ATR output error
• Causes: The ATR Sensor (C) detected a control voltage less than 2.5 V at initialization of the Developing Assembly.
• Remedy: - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5095/5P) and the ATR Sensor (C) (TS7/J6118) - Developing Assembly (C) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 020-03B9-05
• Description: ATR output error
• Causes: The ATR Sensor (C) detected 4.5 V or more of control voltage at initialization of the Developing Assembly.
• Remedy: - Harnesses connecting the Process Unit Relay PCB (UN20/J609), the Relay Connector (J5095/5P) and the ATR Sensor (C) (TS7/J6118) - Developing Assembly (C) [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: 020-0424-05
• Description: ATR output error
• Causes: The ATR Patch (Bk) detected that the output value (SigD) was below the lower limit at initialization of the Developing Assembly.
• Remedy: - Drum Unit - Developing Assembly (Bk) [Remedy] Perform the following in the order while checking whether the error is cleared. 1. Check that the Developing Assembly and the Drum Unit are properly installed. 2. Remove soiling on the exposure window and the Drum Unit. 3. Replace the Developing Assembly and the Drum Unit.