How to test taz6 x axis belt adjustment

My taz6 seems to be off adjustment on the x axis. It keeps jamming into the frame at x home -18. How do i check this out?

What do you mean by jamming into the frame?

I found the limit switches had been turned off in firmware settings. Still not able to make it understand Z -1.2 setting. It will no go low enough top wipe pads or bed level.

Update to the latest firmware, it sounds like you have something custom on there that isn’t right.