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IndustryArena Forum > Machine Controllers Software and Solutions > PlanetCNC > MK2/9 defective Axis repair need help on schematics
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  1. #1
    Junior Member
    Join Date
    May 2009
    Posts
    4

    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

  2. #2

    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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