Ditto the advice already supplied. Remote servicing a unit without schems sounds like a challenge.
MmmmMoody- nice!
Z
Lol- its always a challenge and working without schematics is all part of the game... if you wait to find schematics for these kind of machines, youll never start work on them.. Peep show machine was a pile of bits when I got it and ive had to guess/ learn every part of the path... only the sound to go now