This adjustment must be implemented when replacing the DF unit and/or the original rear side CIS.

AGC adjustment is implemented by scanning the white plate. During a DF scan, the white plate that is attached to the scanner is scanned, and so it cannot scan successfully when the DF is open or there is a gap between the DF and the scanner. As a result, it is no longer possible to make proper adjustments. Therefore, appropriate AGC adjustment values are saved to the SP on this machine when it is dispatched from the factory, and adjustments made later are compared to the SP values. If there is an abnormal value in SP4-691-003, this may cause a paper jam.

After replacing the DF unit and/or original rear side CIS, do the following procedure.

  1. Check that the white plate is not stained with cosmetics or finger prints, etc.
    If it is dirty, clean the white plate with a dry cloth.
  2. Turn the power ON.
  3. Enter the SP mode.
  4. Press “System SP”.
  5. Select SP4-602-001, and set it to “0”.
  6. Select SP4-691-003, and set it to “0”.
  7. Exit the SP mode.
  8. Check that the DF is firmly closed, and make a double-sided copy.
    If it is closed or only open by 5 mm or less, it is acceptable.
    Do not open the DF until scanning is finished.
    [A]: Good, [B]: Not Good
  9. Enter the SP mode again.
  10. Press “System SP”.

  11. Check that SP4-602-001 is set to "1".
    The SP will be set to "0" if the AGC does not finish successfully (for example, if the DF is open when implementing AGC, etc.). Resolve the problem, and then make a double-sided copy again.

    Execution result for SP4-602-001

    ValueDescriptions
    0

    The DF is open or the CIS is defective.

    A jam alert is displayed until the second time. If detected for the third time, SC is displayed.

    1Successful
    2 or 3There is a gap between the DF and the scanner, and so the adjustment result is an abnormal value.

  12. Make sure that the adjustment value of the AGC is reflected in SP4-691-003.