• Code: E270-0101
• Description: Scanner Unit (Paper Back) VSYNC signal error (This error occurs on Duplex Color Image Reader Unit-B1 only)
  Due to the VSYNC error in the Scanner Unit PCB (Paper Back) which communicates with Reader Controller PCB, VSYNC signal is not sent appropriately, so the image error occurs or the operation stops abnormally.
• Remedy: 1. Turn OFF and then ON the power. 2. Check the connection between Reader Controller PCB and Scanner Unit PCB (Paper Back), and check that the Cable is not open-circuit. 3. Check the connection between Reader and Printer, and check that the Cable is not open-circuit. 4. Replace the Reader Controller PCB. 5. Replace the Scanner Unit (Paper Back).

• Code: E280-0001
• Description: Communication error between Reader Controller PCB and Scanner Unit (Paper Front)
  Within specified time, communication between Reader Controller PCB and Scanner Unit (Paper Front) cannot be made.
• Remedy: 1. Turn OFF and then ON the power. 2. Check the connection between Reader Controller PCB and Scanner Unit PCB (Paper Front), and check that the Cable is not open-circuit. 3. Check the connection between Reader and Printer, and check that the Cable is not open-circuit. 4. Replace the Reader Controller PCB. 5. Replace the Scanner Unit (Paper Front).

• Code: E280-0002
• Description: Communication error between Reader Controller PCB and Scanner Unit (Paper Front)
  Disconnection of the cable between the Reader Controller PCB and the Scanner Unit (Paper Front) was detected.
• Remedy: 1. Check the connection between Reader Controller PCB and Scanner Unit PCB (Paper Front), and check that the Cable is not open-circuit. 2. Check the connection between Reader and Printer, and check that the Cable is not open-circuit.

• Code: E280-0101
• Description: Communication error between Reader Controller PCB and Scanner Unit (Paper Back) (This error occurs on Duplex Color Image Reader Unit-B1 only)
  Within specified time, communication between Reader Controller PCB and Scanner Unit (Paper Back) cannot be made
• Remedy: 1. Turn OFF and then ON the power. 2. Check the connection between Reader Controller PCB and Scanner Unit PCB (Paper Back), and check that the Cable is not open-circuit. 3. Check the connection between Reader and Printer, and check that the Cable is not open-circuit. 4. Replace the Reader Controller PCB. 5. Replace the Scanner Unit (Paper Back).

• Code: E280-0102
• Description: Communication error between Reader Controller PCB and Scanner Unit (Paper Back) (This error occurs on Duplex Color Image Reader Unit-B1 only)
  Disconnection of the cable between the Reader Controller PCB and the Scanner Unit (Paper Back) was detected.
• Remedy: 1. Check the connection between Reader Controller PCB and Scanner Unit PCB (Paper Back), and check that the Cable is not open-circuit. 2. Check the connection between Reader and Printer, and check that the Cable is not open-circuit.

• Code: E301-0001
• Description: Reading light intensity error
  The light intensity was at the reference level or below at paper front shading.
• Remedy: 1. Execute the service mode (COPIER > FUNCTION > MISC-R > SCANLAMP) and check that the LED of the Scanner Unit (Paper Front) is lit. 2. Check the connection between Scanner Unit (Paper Front) and LED, and check that the Cable is not opencircuit. 3. Check the connection between Reader Controller PCB and Scanner Unit (Paper Front), and check that the Cable is not open-circuit.

• Code: E301-0002
• Description: Reading light intensity error
  The light intensity was at the reference level or below at paper back shading.
• Remedy: 1. Check that the LED of the Scanner Unit (Paper Back) is lit. 2. Check the connection between Scanner Unit (Paper Back) and LED, and check that the Cable is not opencircuit. 3. Check the connection between Reader Controller PCB and Scanner Unit (Paper Back), and check that the Cable is not open-circuit.

• Code: E302-0001
• Description: Error in paper front white shading
  Error in shading RAM access The shading value is out of the specified range.
• Remedy: 1. Check that the LED of the Scanner Unit (Paper Front) is lit. 2. Check the connection between Scanner Unit (Paper Front) and LED, and check that the Cable is not opencircuit. 3. Check the connection between Reader Controller PCB and Scanner Unit (Paper Front), and check that the Cable is not open-circuit. 4. Check the condition of Shading White Plate of the Stream Read Glass (Paper Front) (scratches, dust, soil, etc.). 5. Check if Scanner Unit (Paper Front) detects HP correctly. (If it does not detect correctly, the Scanner Unit reaches to the end when DF is opened.) 6. Replace the Scanner Unit (Paper Front). 7. Replace the Reader Controller PCB.