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Thank you. I am a novice with electronics and did not realize you could intuit the proper setting that way by testing the resistance at the AC pins.
The correct positioning is the setting pointing directly UPWARD (in my photo it is shown set to 120v). I verified this by comparing the resistance for 120/220 as you mentioned, and verifying that when OFF is pointing up, the multimeter gives no reading.
I also checked the fuses and they were all intact and the machine now turns on.
Time to move on to diagnosing the CD tray with the assistance of this video (https://www.youtube.com/watch?v=9akBE5MdVi4).