Prusa i3 MK3 - S Elftest​ ​ E Rror​ ​ M Essages​ ​ a Nd​ ​ R Esolution​ ​ ( Kit​ ​ O Nly)

6.3.4.1 Selftest error messages and resolution (kit only)
Front   print   fan/   Left   hotend   fan   -   Not   spinning:
Check proper wiring of the print and the hotend fan cables. Ensure that both are
properly connected to the EINSY electronics, and that they are not swapped.
Please   check/   Not   connected   -   Heater/   Thermistor:
Check proper wiring of the hotend power cables and the thermistor cables. Ensure
that both are properly connected to the EINSY electronics, and that they are not
swapped.
Bed/Heater   -   Wiring   error:
Check that the heatbed and the hotend power cables are not swapped or that the
thermistor cables from both the hotend and the heatbed are not swapped in the
EINSY electronics.
Loose   pulley   -    Pulley   {XY}:
The belt pulley is loose and slips on the motor shaft. It is important to tighten the first
grub screw on the flat piece of the shaft, then continue with the second grub screw.
Axis length   -   {XY}:
The printer measures the length of the axis by moving the print head from end to end
twice. If the measured value is different from the physical length, your print head
might be blocked from moving all the way. Check by hand if the print head moves
smoothly when the printer is powered off.
Endstops   -   Wiring   error   -   Z:
Check the proper cabling of the PINDA probe. Routine indicates the PINDA probe
has a malfunction or is not properly responding. Check for the proper connection in
the EINSY electronics.
Endstop   not   hit   -   Motor   Z:
Check if the print head can be moved all the down the Z axis to trigger the PINDA
probe over the bed.

6.3.5  Calibrate XYZ (kit only)
The Original Prusa i3 MK3 comes with a full mesh bed leveling feature, however
for this to work we need to first calibrate the distance between the tip of the nozzle
and the PINDA (Prusa INDuction Autoleveling) probe.
The process is fairly straightforward; so let’s get to it.
The purpose of the X/Y/Z calibration routine is to measure the skew of the X/Y/Z axes and to
find the position of the 4 calibration points on the print bed for proper bed leveling. You can
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