This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
GOOD SERVICE MANUAL.I ALWAYS BUY THERE IF I FIND WHAT I AM LOKING
Text excerpt from page 39 (click to view)
KEH-1800,1850
7.2 DISASSEMBLY
- Removing the Case(not shown) 1. Remove the three screws. 2. Remove the Case. - Removing the Cassette Mechanism Assy
(not shown)
1. Remove the four screws. 2.Disconnect the connector, and then removing the Cassette Mechanism Assy. - Removing the Panel Unit(Fig.1) Disengage the stopper at two locations indicated Remove the Panel Unit.
Panel Unit
Fig.1
- Removing the Tuner Amp Unit(Fig.2) Removing the two screws.
Removing the three screws.
Removing the screw.
Unbend the tabs at four locations indicated by arrow until straight. Remove the Tuner Amp Unit.