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 25 (click to view)
ITEM Program Menu
y Test Meter c Test Point P Pattern
JOB
CODE
Input Signal
Operation
Adjusting Value
STANDARD SETTING
D11 3) Adjust VSR setting H-DUTY P Crosshatch y Osc scope c TP2 ~ GND D12 D13 D14 ModeHIGH H. DRIVE +B y Digital Voltmeter c TP1 ~ GND VSR SETTING P Crosshatch D16 D15 Check that the input signal to the monitor is [fH 71.0kHz] and [fV 184.0Hz]. Set the cell to 2) Adjust VSR setting , and press [ ]. Set the cell to INTP [ 1 ] and press [ ]. Set the cell to H-Duty and press [ ] Make the adjustment to the value shown at right by using [ ] and [ ]. Set the cell to H. DRIVE +B and press [ ]. Make the adjustment to the value shown at right by using [ ] and [ ]. Change to the pattern at left. Set the cell to following items, and make the adjustment to the value shown at right by using [ ] and [ ]. q H. SIZE w H. POSITION e V. SIZE r V. PCC GAIN t V. PCC. CORNER y V. PCC BALANCE q : 310mm ± 5 e : 232mm ± 5 w : Center rty:
t T
Duty = t = 48% T ±2% 12.0V ± 0.2V
D
H-DAF Balance
P Full dots y OSC SCOPE c TP6 ~ GND
D17
Set the SCOPE to 5 us/DIV. Set the cell to H-DAF balance. Make the adjustment to the bast point at right by using [ ] and [ ].
TP6 Video input Best point H-DAF Balance = Best point
H-DAF Gain
P Full dots y OSC SCOPE c TP6 ~ GND
D18
Set the SCOPE to ? ms/DIV. Set the cell to H-DAF Gain. Make the adjustment to the value shown at right by using [ ] and [ ].
H-DAF Gain
D19 D20
To register by press [ ]. Store factory preset data. OK (y/n) Then press [Y] and [ ].
