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 71 (click to view)
DEH-P740MP,P7400MP,P7450MP
7. GENERAL INFORMATION
7.1 DIAGNOSIS 7.1.1 DISASSEMBLY
- Removing the Case (not shown) 1. Remove the Case.
CD Mechanism Module
- Removing the Grille Panel Assy (Fig.1) Remove the two screws and then remove the Grille Panel Assy.
- Removing the CD Mechanism Module (Fig.1) Remove the four screws and then remove the CD Mechanism Module.
Grille Panel Assy
Fig.1
- Removing the Tuner Amp Unit (Fig.2) Remove the two screws.
Remove the three screws.
Straight the tabs at three locations indicated.
Remove the screw and then remove the Tuner Amp Unit. *) Tuner Amp Unit is different partially from this photo.