How to Solve 2M2 Machine Makes Unusual Noise

Problem:
Receiving 2M2 Tank key cutting machine, I test it and find it makes unusual noise. I took two short videos. Hope you help me out.
https://youtu.be/xMLZ4RjUeu0
https://youtu.be/r83VPR0z_Ow

uobdii.com Engineer solution: 100% works
Dear friend!
1.The trouble is due to collide on the way. so it is easy to solve it, please check belt and PCB board by following my instructions. and send pictures to me.

2.You installed the cutter & probe at the wrong place, please install
them by following the next youtube videos.
install probe & cutter + calibration
<span style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" data-mce-type="bookmark" class="mce_SELRES_start"></span>

3 steps to check the belt:
Look for 5 screws at the bottom.



Loosen the 5 screws.


Take a picture and send me.


3 steps to check the PCB board:
This is 2M2 Tank PCB.


Loosen the screws.


Good luck

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