M201- Z axe problem

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CICOtheMajstor
Posts: 4
Joined: Thu Feb 23, 2017 5:23 pm

M201- Z axe problem

Post by CICOtheMajstor » Thu Feb 23, 2017 7:59 pm

I purchase two weeks ago Geeetech Prusa I3 M201 printer .
Unfortunatly till now i do not solve problem with Z axis . When axex move up or down they stall , motors humming and then after few second moves .
Do they booth motors (42SHD0034-20B) have only one step driver A4988 ? Can I adjust a Vref (on what value) that motors have more power ? Which driver on board GTM32pro is responsible for this ?
Or maybe is solution to by strongers motors (what kind or type) ?
In the proces of build this prunter I allready need to make a little bigger holes on booth Z-top mount because without this the lead screw can not turn with hands .
I have mechanical knowlege and I check all parts many times but unfortunatly can not find real solution for this problem .
Can anybody give me a tips ?

bang
Posts: 402
Joined: Wed Dec 28, 2016 2:12 pm

Re: M201- Z axe problem

Post by bang » Fri Feb 24, 2017 1:54 pm

Check this post and the attached file:
viewtopic.php?f=17&t=17038
Z axis.zip
(281.49 KiB) Downloaded 564 times

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