the paperwork for the 809-N will likely be very close. You can grab that from
https://bingo.cdyn.com/slots/there's also a bally_manuals/ folder that has useful stuff on that site.
the schematic for the 809-ZZC is drawing W-1046-1827, which is a much higher number than most of the 89 machines made around that time. It's likely there is an earlier version of the schematic with a lower number.
the main reasons they reissued the schem and changed the drawing number appears to be changes related to the hopper style or changing from jones plugs to molex plugs.
you'll see what ya got once you get the game option and can compare to the 809-N pics on the above site.
flaky lights behind the top class would typically be poor wiper<->rivet contact on the odds disc. The odds disc pic is an example of too cruddy ... the black stuff should be cleaned off. Isopropyl alcohol and a green scrub pad will take care of it quicky.