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  1. #1
    Loner Industries is offline Cast Iron
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    Feb 2010
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    Vancouver, WA
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    Default How to Properly Diagnose a Alarm #175 Ground Fault Detected?

    I have not been able to get in touch with my tech Ray, I am looking for some suggestions on how to diagnose a 175 Alarm. Any help would be great so I can get some parts ordered today and hopefully be back up and running on Monday.

    1992 Haas VF2
    Alarm #175 Ground Fault Detected

    I have tried to do some research and from what I have found, I should start disconnecting externals at the IO PCB board to isolate the issue? Being that I have yet to did into that part of the machine I am a little apprehensive.

  2. #2
    Loner Industries is offline Cast Iron
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    Feb 2010
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    Default

    It appears to be something after the Y axis board and the Y axis motor. If I don't find a issue with the wiring harness, how do you test the serve motor? Its an older brushed system.

  3. #3
    BGL
    BGL is online now Cast Iron
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    Sep 2010
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    Maryland, USA
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    Default

    Pulling this completely out of my "kazoo". Why not try cleaning out the motor / brush / commutator? I do know brush residue can cause RF interference in RC cars, just a thought.

  4. #4
    Loner Industries is offline Cast Iron
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    Feb 2010
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    Default

    Looks to be a Y Axis servo motor

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