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  1. #1
    Join Date
    Apr 2012
    Posts
    6

    comet 750 520control

    have s01 y42 alarm need help

  2. #2
    Join Date
    Jan 2011
    Posts
    350

    Re: comet 750 520control

    I assume display on your screen shows:
    S01 SERVO ALARM:PR 0042 Y

    On Mitsubishi 500 series, alarm S01 alarm number 42 corresponds to:
    FE1 Feedback error 1: A feedback pulse was omitted in a semiclosed loop.

    So feedback error on Y-axis.

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