I wanted to share a video of the Zero Memory procedure for a 1988 FADAL 4020.
NOTE: Before starting this process, write down your machine parameters by using the SETP command so you know your machine's proper settings once the memory has been zeroed. The settings shown in this video are for my specific machine and might not be the same for yours.
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Pat is definitely the most knowledgeable FADAL expert in the area!