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 17 (click to view)
6551-T3N/6551-U3N
2-3. A BOARD REMOVAL
CN306
5
CN308 CN311 CN303 CN309
A board
4
Three screws (+BVTT 3 x 8)
CN305
1
Screw (+BVTT 4 x 8) Cable stopper
2
3
Two screws
6
2-4. REAR SHIELD COMPLETE ASSY, D BOARD REMOVAL
Refering to 2-3, disconnect five connectors (CN303, CN305, CN306, CN309 and CN311).
N board
Screw (+P 3.5 x 20)
5
CN904
Three screws (+BVTP 3 x 8) D board
7
CN601 CN600
A
CN303
4
Rear shield complete assembly
A
2
Screw (+BVTT 4 x 8)
3
Widening the chassis toward the direction A , disengage two claws.
