Awesome manual. Complete diagrams of all board assemblies as well as how to get to each part of the t.v. down to the individual screws and their locations. Get it.
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.
IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
Text excerpt from page 3 (click to view)
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REPLACE THE BOTTOM PLATE
1 2 1 2
Bottom Plate
There is no serial label on the body as a service part. Therefore, you need to replace the customer's bottom plate with a serial label to the service part. The bottom plate can be removed by removing each two screws 1 and 2 on the bottom side.
A
Replace the customer's bottom plate to the service part.