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Answered Y axis not homing correctly

Discussion in 'Troubleshooting' started by John in MS, Jul 31, 2018.

  1. John in MS

    John in MS Active Member

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    Y not moving back When I home. I just moved it work on the hotend. Thanks for any help
     
    #1 John in MS, Jul 31, 2018
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Sounds like a loose belt.

    That grinding sound is the belt skipping on the gear attached to the stepper shaft.

    You would get the same noise if the home switch were not working for X or Y and the firmware tried to drive the axis beyond the limit (i.e. past home) -- it mechanically can't and thus will forcibly skip (and make that sound)
     
    #2 mark tomlinson, Jul 31, 2018
  3. John in MS

    John in MS Active Member

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    When I start the Home with the bed fully in the front, it goes dead center. Then when I home from the middle, the bed moves completely forward and extruder goes down in the back. The bed will not move forward during
     
    #3 John in MS, Jul 31, 2018
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Assuming you have done nothing else to it before this started, manually home the printer (move it there) then connect and using the GCode terminal issue an M119 and see what the printer responds with in the terminal. It should respond with a status for each X/Y/Z end strop of OPEN or TRIGGERED (triggered meaning it is at HOME for that axis):

    There are some details over here: http://marlinfw.org/docs/gcode/M119.html
     
    #4 mark tomlinson, Aug 1, 2018
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I would take snapshots using M119 after each time you try to home using the software as well.
     
    #5 mark tomlinson, Aug 1, 2018
  6. John in MS

    John in MS Active Member

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    Ok. I will try. I saw a video with the same problem and it worked right after simply removing the xxl and running a print from the computer. Then reconnecting tge xxl to work fine. Haven't had tone to try this or anything yet
     
    #6 John in MS, Aug 1, 2018
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Hopefully it is a home switch misreporting (stuck open/closed or intermittently switching).
    Easy fix if that is the case.
     
    #7 mark tomlinson, Aug 1, 2018

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