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 5 (click to view)
DTR-10.5/RDC-7.1 How to Install Updater
0. Download the firmware "setup_xxxxxx.zip" to the disk top. Double-click the icon. 1. Start Install program by double-clinking "Setup.exe". 4. When Install is completed, this window appears. Please read "ReadMe.txt" at least once.
Click "Next". 2. Select a target folder Updater should be installed to.
Click "Next". 3. Make sure the location is OK and click "Install".