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We have a Sharp AL-1661CS Copier. It is coming up with an H4-00 error message that will not clear. We even tried unplugging. Got any clues?

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Performing a Fault Reset 14 will reset your WorkCentre and will help to clear error codes.

  1. Find the pink Clear button on the Control Panel of the WorkCentre.
  2. Find the button below the word Auto.
  3. Press these buttons in the following sequence: [Clear], [Auto], [Clear], [Auto] NOTE: All of the lights on the Control Panel should go out and the LED Display should go blank. If the lights do not go out, then repeat step 3 until they do. It may be necessary to increase or decrease the pace of the [Clear], [Auto], [Clear], [Auto] sequence.
  4. Press the [10's] key one time and the [1's] key four times to enter '14' in the LED Display, as if you were to make 14 copies.
  5. Press the green [Start] button.
  6. Press the pink [Clear] button two times.
  7. The WorkCentre should now warm up and come to ready.
  8. If the above steps do not clear the error code, repeat steps 3 to 6 a second time.

Posted on May 03, 2008

  • astros610 Feb 14, 2011

    AL 1661CS from mid 90's I have a white w/ red C (clear button) and a Yellow CA (clear auto) button. Tried this sequence and nothing happens at all. Error code is H4-00- any other ideas?
    I powered down for a couple days - and restarted today to check this possible solution.
    I have unplugged it too. Nothing changes

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To perform the reset for the H4 do the following:
Find the Clear button on the Control Panel.
Find the Auto button.
Press these buttons in the following sequence: [Clear], [Auto], [Clear], [Auto]

NOTE: All of the lights on the Control Panel should go out and the LED Display should go blank. If the lights do not go out, then repeat step 3 until they do. It may be necessary to increase or decrease the pace of the [Clear], [Auto], [Clear], [Auto] sequence.
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