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 6 (click to view)
ADJUSTMENT
MECHANICAL EXPLODED VIEW 1 / 1
A MAIN C.B
VOLUME
VR 1
PHONES SFR 51 J1
PH
1
12
2
1. Tape Speed Adjustment Settings : � Test tape : TTA�100 (Tape center) � Test point : PHONES JACK (J1) � Adjustment location : SFR51 Method : Play back the test tape and adjust SFR51 so that the frequency is 3000Hz±10Hz.
2. Head Azimuth Adjustment Settings : � Test tape : � Test point : � Ajustment location: Method:
TTA�300 PHONES JACK (J1)
Head azimuth adjustment screw Play back the test tape and adjust the screw
so that the output becomes maximum and same phase.