Prusa Research i3 MK2.5S Multi Material Upgrade 2S, Руководство пользователя

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How to check it:
1. Loosen the two screws which hold the extruder-idler (door) and remove them.
2. Try to push the Bondtech gear on the motor shaft by an Allen key. If it moves,
continue with the next step. If it doesn’t move, it means that the screw is properly
tightened and you can close and secure the extruder-idler again.
3. Unscrew the Festo fitting on the extruder.
4. Insert a string of filament into the extruder. Align the Bondtech gear precisely (as
you can see on picture 33).
5. The screw in the Bondtech gear has to be tightened directly against the flat part
of the shaft - this stops the gear from inadvertent rotation.
6. Screw the extruder-idler and Festo fitting back.
Pict. 33 - How to open idler doors and how to try loosed Bondtech gear
13.1 MMU load failed - Blinking red LED
If you see the error message “MMU load failed” on the printer’s LCD display, it indicates that
the filament went through the MMU2S unit (FINDA sensor is triggered - value is 1), but the
filament did not reach extruder Bondtech gears. First LED indicates that the loading of the
first filament failed, second LED -> second filament and so on.
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