Background
In the event your ATC board has died, and you are waiting for the arrival of a replacement board, this doesn’t mean your machine is down. You can still complete manual tool changes as a workaround.
Tools
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Metric hex wench set
M-Series/PCNC 770/1100 with M ATC’s
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Remove the solenoid cover on the left side of the ATC.
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On the solenoid closest to the front of the machine, press the silver manual actuation button on the solenoid. This should fire your power drawbar.