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.
Text excerpt from page 63 (click to view)
SOFTWARE INSTALL
iv. Change to ADDR 000h
v. Change the DATA using VOL Up/Down key in user remote controller * Change the value to original value - 1 * If the original value 17, then change 16
vi. Press OK key for memorize vii. Change the ADDR using PR Up/Down key in user remote controller