x axis change during printing

[bmdiyh]

Hello recently I bought a Prusa i3 Pro B. Everything is working I printed out a few stuff, but during printing sometimes the x axis moves in starts the next layer, see in the picture. `

14191515_961639237296216_122970460_o.jpg (78.55 KiB) Viewed 4360 times

Do you have any suggestions of where might be the problem? Thank you!

[William]

Hello recently I bought a Prusa i3 Pro B. Everything is working I printed out a few stuff, but during printing sometimes the x axis moves in starts the next layer, see in the picture. `

14191515_961639237296216_122970460_o.jpg

Do you have any suggestions of where might be the problem? Thank you!

Hi,
Here is some tips:
1.Check the tightness of the timing belts,not tight and not loose.
2.Try changing another driver A4988 of the axis if you had a spare one.
3.Make sure your printing speed is not too fast.