• Code: E412-0006-04
• Description: Fan error
• Causes: Rotation of fan was detected after the stop signal for the ADF Cooling Fan was transmitted.
• Remedy: [Related parts] R1.00 - ADF Cooling Fan - Main Controller PCB (UN81) [Remedy] Check/replace the related parts.

• Code: E423-0001-04
• Description: ADF error
• Causes: An access error to SDRAM for controlling ADF that is installed on the Main Controller PCB was detected.
• Remedy: Check/replace the Main Controller PCB (UN81)

• Code: E500-0000-02
• Description: Finisher communication error
• Causes: An error was detected on the finisher side.
• Remedy: 1. Check that the connector (CN1/P3/J3) of the Interface Harness is not disconnected. 2. Replace the Finisher Controller PCB. 3. Replace the Interface Harness.

• Code: E530-0001-02
• Description: Front Alignment Plate HP Sensor error
• Causes: The Front Alignment Motor did not move from the HP.
• Remedy: 1. Check that the connector (P8-3/P8/J8) of the Front Alignment Plate HP Sensor (S4) is not disconnected. 2. Check that the connector (P6-12/P6-2/J6-2/P6/J6) of the Front Alignment Motor (M4) is not disconnected. 3. Replace the Front Alignment Plate HP Sensor (S4). 4. Replace the Front Alignment Motor (M4). 5. Check the conditions of the front alignment drive parts (belt and gear). 6. Replace the Finisher Controller PCB. 7. Replace the Harness Assembly.

• Code: E530-0002-02
• Description: Front Alignment Motor error
• Causes: The Front Alignment Motor did not return to the HP.
• Remedy: 1. Check that the connector (P8-3/P8/J8) of the Front Alignment Plate HP Sensor (S4) is not disconnected. 2. Check that the connector (P6-12/P6-2/J6-2/P6/J6) of the Front Alignment Motor (M4) is not disconnected. 3. Replace the Front Alignment Plate HP Sensor (S4). 4. Replace the Front Alignment Motor (M4). 5. Check the conditions of the front alignment drive parts (belt and gear). 6. Replace the Finisher Controller PCB. 7. Replace the Harness Assembly.

• Code: E531-8001-02
• Description: Staple Motor error
• Causes: The Staple Motor did not move from the HP.
• Remedy: 1. Check that the connector (P9-1/P9/J9) of the Staple HP Sensor (S11) is not disconnected. 2. Check that the connector (P10-1/P10/J10) of the Staple Motor (M9) is not disconnected. 3. Replace the Stapler. 4. Replace the Finisher Controller PCB. 5. Replace the Harness Assembly.

• Code: E531-8002-02
• Description: Staple Motor error
• Causes: The Staple Motor did not return to the HP.
• Remedy: 1. Check that the connector (P9-1/P9/J9) of the Staple HP Sensor (S11) is not disconnected. 2. Check that the connector (P10-1/P10/J10) of the Staple Motor (M9) is not disconnected. 3. Replace the Stapler. 4. Replace the Finisher Controller PCB. 5. Replace the Harness Assembly.

• Code: E537-0001-02
• Description: Rear Alignment Motor error
• Causes: The Rear Alignment Motor did not move from the HP.
• Remedy: 1. Check that the connector (P7-5/P7/J7) of the Rear Alignment Plate HP Sensor (S5) is not disconnected. 2. Check that the connector (P5-13/P5-3/J5-3/P5/J5) of the Rear Alignment Motor (M5) is not disconnected. 3. Replace the Rear Alignment Plate HP Sensor (S5). 4. Replace the Rear Alignment Motor (M5). 5. Check the conditions of the rear alignment drive parts (belt and gear). 6. Replace the Finisher Controller PCB. 7. Replace the Harness Assembly.