• Code: E270-0001
• Description: Scanner Unit VSYNC signal error
  Due to the VSYNC error in the Scanner Unit which communicates with Reader Relay 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 Relay PCB and Scanner Unit, 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 Relay PCB. 5. Replace the Scanner Unit.

• Code: E270-0002
• Description: DDI HSYNC error
  Due to the DDI hardware HSYNC signal error, 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 and Printer, and check that the Cable is not open-circuit. 3. Replace the DDI-S Cable between Reader and Printer. 4. Replace the Reader Relay PCB.

• Code: E280-0001
• Description: Communication error between Reader Relay PCB and Scanner Unit
  Within specified time, communication between Reader Relay PCB and Scanner Unit cannot be made.
• Remedy: 1. Turn OFF and then ON the power. 2. Check the connection between Reader Relay PCB and Scanner Unit, 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 Relay PCB. 5. Replace the Scanner Unit.

• Code: E280-0002
• Description: Communication error between Reader Relay PCB and Scanner Unit
  Disconnection of the cable between the Reader Relay PCB and the Scanner Unit was detected.
• Remedy: 1. Check the connection between Reader Relay PCB and Scanner Unit, 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: E280-0003
• Description: Readingunit communication error
  Communication error at J507 and J508 conectors of the Reader Relay PBC(PCB1).
• Remedy: 1.Disconnect and then connect the flexible cable(Reader Relay PCB(PCB1)-Main Controller PCB(UN12) 50pin). 2.Cisconnect and then connect the flexible cable(Scanner Unit- Reader Relay PCB(PCB1)). 3.Replace the flexible cable. 4.Replace the Reader Relay PCB(PCB1). 5.Replace the Main Controller2 PCB(UN12).

• Code: E280-0004
• Description: Readingunit communication error
  Communication error at J512 conector of the Reader Relay PBC(PCB1).
• Remedy: 1.Disconnect and then connect the flexible cable(Reader Relay PCB(PCB1)-Main Controller PCB(UN12) 50pin). 2.Replace the flexible cable. 3.Replace the Reader Relay PCB(PCB1). 4.Replace the Main Controller2 PCB(UN12).

• 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 open-circuit. 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 open-circuit. 3. Check the connection between Reader Controller PCB and Scanner Unit (Paper Back), and check that the Cable is not open-circuit.