What happened?
If a Prusa Printer with a CoreXY detects a crash, the printer will attempt to find a reference point through a procedure called precise homing. If the right and left sides are not aligned, the precise homing will fail, and this error will be shown.
Error name: Precise Refinement Failed
Error code: #17102 (XL) #31102 (CORE One)
How to fix it?
Check the belt tension (Adjusting belt tension (CORE One) or Adjusting belt tension (XL)) and adjust it if needed. Ensure that the printer's right and left sides are perfectly aligned.
After correctly adjusting the belts, the two plastic parts on the sides of the rail should reach the front of the axis together.
7 comments
Bei meinen core one das gleiche Problem mit der y Kalibrierung.
Gibt es irgendwelche Antworten darauf?
Bin nach einer Woche umstellen langsam am verzweifeln.
TLDR; So, you may need to check and re-check. The phone harmonic checker thing works fine but you have to properly strum the belts and hold the microphone end of the phone very close to the belt.
The print head just bangs and clatters around in the front RH corner for several minutes, then the machine reboots and gives this red failure warning (Precise Refinement Failed
#17102 (XL) #31102 (CORE One)
My first Prusa, and fast approaching losing faith in it already. Reading the official Prusa forums, it's also clear that I'm not the only one struggling with this issue on the Core One.