Sorry B/F should have specified Service manuals. Need to align the tuners on both and G-4500 has a weird problem with one channel only with speakers attached. Sounds great through headphones.
The G-4500/3500 Op man is an Original which I bought Online, I think it was from Ebay, for my Sansui literature collection. I dont have the actual unit itself, I do have a G-5500 though and its svce man. The G-4500 svce man is available though from www.agtannenbuam.com B/F.