Original Prusa I3 MK2 Manual

 
 
Both the assembled versi on a nd th e ki t ve rsion co me  w it h  a  fe w  th in gs  yo u m ig ht n eed
 
during the printer use.  
 
- USB Cable ​ - used fo r  uplo adin g a  n ew  firmw are  o r  alt e rn ative ly  prin tin g fr o m  th e
 
computer.  
- Acupuncture needle
​ -  use d fo r  cl eanin g th e n ozzl e w hen st uck.  S ee th e ch apte r
 
11.3 Nozzle cleaning
​ fo r  mo re in fo rma tio n.
 
- Glue stick ​ - Used fo r  bette r  N ylon a dhesi on o r  as  a se para to r fo r F le x  m...

 
6.3.1 Calibration flow  
 
 
12
  

 
There are few special occ asi ons  where  yo u w ill  n eed to  re do th e ca lib ra tio n o r p art o f it .
 
 
● Firmware update ​ -  C omp le te  g uid e is  in  th e ch apte r 
​11.8  U pdatin g p rin te r fir m ware
​.  
6.3.9. First layer calib ra tio n
​ n eeds  to  b e re run o th erw ise  th e p rin te r w ill  sh ow  a n e rro r
 
message.    
● Replacing the PEI/U lte m s h eet
​  -  W hen PEI  is  ch anged ( g uid e is  at
 
manual.prusa3d.com
​), w hole  h eate d b ed is  re mo ved a nd r...

 
resistant polymer and you  can te mp ora ry  apply  oth er  adhesi on so lu tio ns  wit h out d am agin g
 
it. This also applies to ma te ria ls  which  w ould  n ot st ick  to  PEI  o th erw ise , like  N ylon e tc.
 
 
Before applying anything  to  th e b ed, co nsi der  usi ng 
​Brim  o ption
​ in  S lic3 r w hich  in cr ease s
 
the surface area of the first  la ye r.
 
 
For PLA and Nylon blend s a si mp le  g lu e st ick  does  th e tri ck.  G lu e ca n b e la te r e asi ly
 
removed by window...

 
 
Endstops - Wiring error -  {XYZ}:
   
Check the proper cablin g o f e ndst ops.  R outin e in dica te s  axi s  on w hich  e ndst op
 
reported malfunctio n o r  is  not p ro perly  re sp ondin g. C heck  th e p ro per co nnect io n in
 
the Rambo electronics.
 
 
Motor - {XYZ} - Endstop {XYZ }:
   
Check that motor and e ndst op o n in dica te d a xi s  are  p ro perly  co nnect ed to  th e
 
Rambo electronics and n ot sw apped w it h  mo to r  or  endst op o f d if fe re nt a xi s.  A xi s...

 
the 9 sensor points is me asu red a nd st ore d in to  a  n on-vo la tile  m em ory  fo r r e fe re nce , th is
 
finished the Z axis calibrat io n.
 
 
The progress and results  o f e ach  st ep a re  d isp la ye d o n th e L C D. In  ca se o f e rro rs  fo und, th e
 
XYZ calibration is interrupt ed a nd th e re aso n fo r  erro r is  sh ow n to  g uid e in  tr o uble sh ootin g.
 
 
At the start of the XYZ cal ib ra tio n p ro ce dure  th e p rin te r  pro mp ts  yo u b y  a fo llo w in g m essa...

 
Congratulations, you b uilt  yo ur  prin te r  pre cise ly,  yo ur  X/ Y a xe s are  p erp endicu la r.
 
 
4) XYZ calibration all r ig ht. X/ Y axes a re  s lig htly s kew ed .
 
 
Good job, the X/Y a xe s are  n ot p re cise ly  perp endicu la r,  b ut st ill  q uit e  a ll  r ig ht. T he
 
firmware will correct fo r  th e X/ Y ske w d urin g n orma l  p rin tin g, so  b oxe s will  b e p rin te d
 
with right angles.  
 
5) X/Y skewed severe ly . Sk ew  w ill b e c o rre cte d a u to matic ally ....

 
During the mesh bed level in g p ro ce dure  fo llo w in g e rro rs ma y be r e porte d o n th e d isp la y.
 
 
1) Bed leveling failed. Se nso r d is co nnecte d o r c ab le  b ro ken . W ait in g f o r r e set.
 
 
Verify, whether the PI NDA  pro be ca ble  is  plu gged in to  th e R AM Bo b oard  co rre ct ly.  If
 
it is the case, the PINDA  pro be is  bro ke n a nd it  n eeds  to  b e r e pla ce d.
 
 
2) Bed leveling failed. Se nso r d id n’t  tr ig ger. D eb ris  o n n ozzl e?  W ait in g f o r...

 
6.3.5.1 Y axis alignmen t (ki t on ly )
 
 
For autocalibratio n to  w ork  pro perly,  it  is  ext re me ly  imp orta nt fo r th e Y  a xi s  to  b e
 
perpendicular to th e X  axi s.  T his  ca n b e e asi ly  ch ecke d b y  lo oki ng a t th e p rin te r
 
from the top and vi su ally  alig nin g th e X-a xis  ro ds  wit h  lin es  on th e h eatb ed. If th e Y
 
axis is misaligned, yo u ca n e asi ly  adju st  th e p osi tio n o f th e Y  a xi s  in si de th e fr a m e
 
by loosening the  ​M10 nuts ​...

 
After that, the printer ask s yo u to  co nfirm  th is  step: 
​"A re  le ft  an d r ig ht Z  c arria g es a ll u p?"
 
 
Please make sure you re ally  mo ve th e Z  ca rriage u p to  th e e nd st oppers  until  yo u h ear a
 
rattling sound as the Z ste pper  mo to rs  ski p st eps.  T his  pro ce dure  e nsu re s,  th at 1 ) th e X  a xi s
 
is perfectly horizontal, 2)  th e p rin t n ozzl e is  in  a  kn ow n d ist ance  fr o m  th e p rin t b ed. In  ca se
 
the Z carriage did  ​not  ​touch...