Prusa i3 MK3 - Page 19

1) XYZ   calibration   failed.   Bed   calibration   point   was   not   found.
The calibration routine did not find a bed sensor point. The printer stops close to the
bed point, which it failed to detect. Please verify, that the printer is assembled
correctly, that all axes move freely, the pulleys do not slip and the print nozzle is
clean. If everything looks good, re-run the X/Y calibration and verify, with a sheet of
paper between the nozzle and the print bed, that the print nozzle does not touch the
print bed during the calibration routine. If you feel a friction of the nozzle against the
sheet of paper and the nozzle is clean, you need to screw the PINDA probe slightly
lower and re-run the X/Y calibration.
2) XYZ   calibration   failed.   Please   consult   the   manual.
The calibration points were found in positions far from what should be expected for a
properly assembled printer. Please follow the instructions of case 1).
3) XYZ   calibration   ok.   X/Y   axes   are   perpendicular.   Congratulations!
Congratulations, you built your printer precisely; your X/Y axes are perpendicular.
4) XYZ   calibration   all   right.   X/Y   axes   are   slightly   skewed.   Good   job!
Good job, the X/Y axes are not precisely perpendicular, but still quite all right. The
firmware will correct for the X/Y skew during normal printing, so boxes will be printed
with right angles.
5) XYZ   calibration   all   right.   A   skew   will   be   corrected   automatically.
You may consider to re-align the X/Y axes (as described in the chapter 6.3.5.1 Y
axis alignment). Still the firmware will correct the skew during normal printing and as
long as the X and Y axes move freely, the printer will print correctly.
During the mesh bed leveling procedure, the following errors may be reported on the display.
1) Bed   leveling   failed.   Sensor   disconnected   or   cable   broken.   Waiting   for   reset.
Verify, whether the PINDA probe cable is plugged into the RAMBo board correctly. If
that is the case, the PINDA probe is broken, and it needs to be replaced.
2) Bed   leveling   failed.   Sensor   didn’t   trigger.   Debris   on   nozzle?   Waiting   for   reset.
This is a safety check to avoid crashing the nozzle into the print bed if the PINDA
sensor stops working or something goes wrong with the printer mechanics (for
example, a pulley slips). This safety check may also be triggered if the printer has
been moved to an uneven surface. Before doing anything else, make the Z axis level
by going all the way up and try again
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