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Prusa Research a.s.
Prusa Research a.s.

1. Begin assembly

Step 1 of 8 (Chapter 3 of 3)
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Service menu - Individual Filament Calibration
  • Difficulty

    Moderate
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Ibrahima MANGA
Bonjour, je ne parviens pas à entrer dans le Menu secret pour faire calibrer (faire avancer) le filament correctement. Le filament n'atteint pas l'extruder 
Ibrahima MANGA
"I want to access the secret menu of my MMU2 to calibrate the filament, but I can't seem to access it."
David B.

Hi! This guide is valid for firmware 1.0.6 or older. If you are using a newer firmware 3.x.x and up, you don’t need to do this calibration.

Oparie
The ' secret'  menu starts by holding the MMU middle button straight from the moment you turn the printer on. There is no ' waiting for selector travel'.
Puzzleshift
although it says the MMU2S does not require this, it still works on the MMU2S. this is usefull if you have moved the MMU unit and your bowden is longer than 400mm, for example, if you have placed it outide an enclosure or on the top of a LACK table
Eyal Peleg
In case anyone is wandering like i did as to how to insert the filament into the mmu 2.0,

use 1-2 sec clicks on the right and left buttons on the mmu to select a filamnet, then push middle button for 1-2 sec and it will start flashing, push the filament into the tube and if you push it enough the mmu will detect it and pull it in and then a push it back out a bit.