I do not speak English very well. So I made a video.
No bad sound plane movement from the control panel
No bad sound manual plane movement (machine off)
No bad sound when printing
Bad sound when the plane stands up for calibration
I checked:
Plate Screws (are not tight as manual illustrates)
Z axis motor coupler screws (ok)
Z axis motor coupler (ok, disassembled and reassembled)
Lubricated everything (always done on every print)