X axis issue during printing please help

[Greenhorn]

durring printing my X" axis will shift with a loud Rummmmmmp then continue to bring off of the 3d print. it varies on how much off and when it happens, any help?!?!?!?!?!

[Mark]

Maybe your driver voltage is too low, check the link here to change the voltage to a proper range:
http://www.geeetech.com/forum/viewtopic ... 13&t=17038

[ericur]

I just resolved a similar problem. In my case, the problem was with the right hand pulley for the X-axis drive belt. It was binding sometimes (not all the time). So it would work and at random times it would bind and throw off the X-axis. I backed the lock nut off a half a turn and put some good oil on it and everything is working well!