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RE: MMU2 Troubleshooting
Another thing to check while you have the MMU2 opened is that the set screws on the left are tight. They came loose on mine after a few months and the unit started to occasionally fail to change filament since the bearing didn't engage properly. While the machine is powered, the tumbler should not wiggle at all and this is the best way to test. To tighten, though, you will need to turn off the power so you can hand-turn the tumbler enough to access the screws.
Posted : 18/06/2019 2:07 pm
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