I got into the basement, tape mentions a subbasement. It says "Really hold it down" presumably about the button on the wall?
This is NOT a mechanic the game has. I pressed the button a thousand times as fast as I could, I held down E to see if eventually it would register, and obviously let it go after that and got a standard button press. I TCL'd into the floor and looked for a physical room, but it must open an area transition or something. There's no sub basement, there's no way into the sub basement I can find, and the tape not only doesn't contain audio (not unusual in my experience, the Jake station never plays real audio) so I could only "hear" it with captions, it seems to jump right over a section. It cuts from like "store all the robco crap in the subbasement." to "You have to really hold it down, yadda yadda."
I have no idea what I can do to progress past this point, if I knew the quest ID I'd just manually progress it to the next step or complete.