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Seems that you didn't read "How To collection" thread.
Now take the red probe of your multimeter and keep it on the ground.
Check all test points ONLY with black probe!
BTW, use signal name, or component point; better to use U7701 ball marked on schematic.
You are working one board at time; one pdf, one boardview.
I have approx 20 pdf schematics opened (for online support) and ONE boardview of the board I work on the desk.
Don't force me to open more; no need that, once pdf has all I need to reply.