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Thread: 401 and 420 alarm

  1. #1
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    401 and 420 alarm

    I start up my ooya with a fanuc 6m control. I get a 401 and 420 alarm.
    Tried pressing cancel and p buttons to reset same alarm come up. Checked the diagnostics on number 801 it read -476 and number 804 read 3490. Does anyone have an idea of what my problem is or how to fix it?


  2. #2
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    Look at your servo drives and see if there are any alarm leds on


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