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Print head Y-axis issue.


DJDm

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Posted · Print head Y-axis issue.

Hi,

I'm having an issue with the print-head not recognizing the y-axis properly. When manually adjusting the print-head, the metal steppers click. However, when homing, the print head does not move on the Y-axis. When printing, it slams into the front of the frame and on abort, the head does not return to it's position on the Y-axis.

Attached are two videos.

 

 

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    Posted · Print head Y-axis issue.

    It's supposed to home in the rear left corner. One of the wires to the Y servo could be backwards. If so it would beg the question of how they actually tested your machine before shipping but I'd check that first as it is easy - check that the wire colors on the connectors of X and Y are the same. Actually if it's just the wires crossed then the second video makes sense and if they weren't paying attention it would just print the part just fine but mirror image.

    Also check that the Y limit switch is connected to the correct spot.

    I have seen many similar problems but this one is unique for me. You should also immediately contact support.ultimaker.com.

    Note that the "slamming into " behavior happens occasionally and the printer is strong enough that it can handle this just fine. But of course it usually only happens if a limit switch is not being triggered properly (but the limit switch is in the back! - it's supposed to home in the back!).

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    Posted · Print head Y-axis issue.

    Thanks for the reply. I've been printing off and on for about a month and yesterday was the first time I've had this issue. Prior it had been homing correctly (rear-left) so I'm unsure if the suggestions you have are relevant to a printer that's been working correctly (not an out-of-the-box issue).

    The issue started when I tried a new print, but it was the same file-format and etc. as my other prints. Other than that, nothing new has happened and a factory reset on the Ultimaker 2 didn't resolve it.

    I will contact customer support as well as look at your suggestions.

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    Posted · Print head Y-axis issue.

    I can't imagine why the stepper would go the wrong way. There is a direction signal but if the signal was stuck it would go the same direction always and never go towards the back. Ever.

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    Posted · Print head Y-axis issue.

    We got a response from customer service and it seems to have fixed our issue! Also our prints are infinitely better than before the problem occurred (funny, because we just assumed the myriad of minor issues was a common occurrence such as bad infill, top layers not filling, slopes drooping/not printing, etc... ).

    So, for future visitors that might have the same problem - our issue was the cord (red) going to the y-axis motor was pinched behind the feeder motor. After freeing it, we've had great results with our prints.

    Also, again thank you for the responses gr5.

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