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  1. #1
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    Sharp Mx-4070 main door not recognized open

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    Sharp Mx-4070 main door not recognized open

    Sharp 4070 main door not recognized open. Have any of you wonderful gentlemen ever experienced is that the machine does not recognize that the door is open never had this happen to me looked for sensors and such could not find anything ribbon cable looks good. Any advice would be great looking forward to hearing from you guys.

  2. #2
    Senior Tech 250+ Posts spanky's Avatar
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    Re: Sharp Mx-4070 main door not recognized open

    See attached PDF.

    The DSW_F is the front door switch.

    It is a microswitch with an actuator on the front door.

    It can't get much simpler that that.
    Attached Files Attached Files

  3. #3
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    Sharp Mx-4070 main door not recognized open

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    Re: Sharp Mx-4070 main door not recognized open

    That’s the thing went to look at those switches and everything seem to be testing out fine even swapped the switches around just weird

  4. #4
    Senior Tech 100+ Posts Prints Charming's Avatar
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    Re: Sharp Mx-4070 main door not recognized open

    Common for the N models to have a slightly bent switch activator over time, which causes the sensor to stay constantly activated even though the door is open.
    Door switch front and Door switch main side are the same part number, but have been updated to correct this problem. The smallest bend will cause this issue. Does not take much.
    You can do sensor tests in Simulation 30-1 for DSW-F and DSW-R, and also check harness CN20 on the PCU PWB as both door switches are on this harness.

  5. #5
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    Sharp Mx-4070 main door not recognized open

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    Cool Re: Sharp Mx-4070 main door not recognized open

    Quote Originally Posted by Prints Charming View Post
    Common for the N models to have a slightly bent switch activator over time, which causes the sensor to stay constantly activated even though the door is open.
    Door switch front and Door switch main side are the same part number, but have been updated to correct this problem. The smallest bend will cause this issue. Does not take much.
    You can do sensor tests in Simulation 30-1 for DSW-F and DSW-R, and also check harness CN20 on the PCU PWB as both door switches are on this harness.

    Thank you so much you are amazing

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