3D Printer Calibration Fail Fix and Z offset (Davinci 1)

hope this helps y'all. I have the Davinci 1.0 3in1 3d printed by XYZ printing. the error says "calibration fail please read faq " also z offset should work as well remember backwords means back of the machine here's my beats because I also produce music heavily: https://www.beatstars.com/loganstew