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IndustryArena Forum > Machine Controllers Software and Solutions > PlanetCNC > MK2/9 defective Axis repair need help on schematics

Thread: MK2/9 defective Axis repair need help on schematics

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  1. 05-23-2018, 07:13 AM #1
    4u2fast
    4u2fast is offline Junior Member
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    May 2009
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    MK2/9 defective Axis repair need help on schematics

    Hi,

    can anyone help and answer me the question below ?

    there are 10 x 74HC14 (U1-U10) on board and i have x axis and some output channels defective due operator fault :bat: ...
    i need to know which chip is responsible for what output.

    thanks

    Thomas
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  2. 09-25-2021, 08:18 PM #2
    franmar34571515
    franmar34571515 is offline
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    May 2020
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    Re: MK2/9 defective Axis repair need help on schematics

    U3 E U4 step U4 PIN 6 dir PIN 8 U3
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