Hello I just built my K8200 and by testing the micro switches like it’s writen in the manual, I realised I can’t stop the Z-Axis from moving with the micro switch. I even changed the connection and connected the switch from the Y axis to the Z one, but it can’t stop it either. I can’t think of any solution since all cables are ok and no switch is working on that axis, besides the connectors from the board being defective, or a software issue maybe?
Verify that the bolt on the moving part presses the microswitch. Verify that you hear a small click sound when the microswitch is pressed. Verify that everything is cabled correctly.
A software issue is highly unlikely.
Hi can you measure if the - pin on the Z endstop connector is connected to the - (ground) of the power supply?
I measured the - pins and it says 0. I get 0,23 when measuring on the top pin (s).
when I check the Y and X connectors they have 4,94. is the s pin on the board not getting enough power or what could it be?
I checked every cable and everything, they are all ok. the only thing I see is that the Z connector is getting less power than the X and Y connectors, as I wrote already.
Z is getting only 0.23 while X and Y get 4,94 V.
Did you solve this problem ? I have the exact problem, tried with different connectors but t z-stop switch isnt working. Cables are fine
Hi,
did you check the switch with an Ohm meter? (unplug the Z-stop from the board and connect the ohm meter (or continuity tester) to the 2 terminals of the cable). Circuit is normally closed and will open when you push the switch lever.
I sent the board back and got a new one
Yes, I tested the switch with a continuity tester, circuit is closed and opens when the switch is pressed. I tested the switch with the x-axis motor and it works like it should (the x-motor stops), so it seems to be an issue with the board itself?
Most likely an issue with the board then. Just ask for a new one.
you could try reloading the firmware
Thanks for the tips. Firmware update fixed the problem. 
Good to know. Thanks Wrong Way :).
No problem at all
It was just a guess in hopes to get the machine up and running as quick as possible.
Happy printing