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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.
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perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
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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.
 ;
IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
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Very usefull, good quality drawings !
Muito útil encontrei todas as informações necessárias.
6. Video Out Gain Adjustment
Test Point: Video Output Connector 8 Aim the Camera at the Logarithmic Gray Scale Chart.
8 Connect the terminated Oscilloscope with 75� to the
Video Output Connector.
8 Adjust data with the ARROW keys so that the Video
300 mV ± 10 mV
Output signal level becomes 700 mV ± 50 mV as shown in Fig. 5-6.
Fig. 5-7
8 Press the ENTER key.
700 mV ± 50 mV
8 Adjust data with the ARROW keys so that the Video
Output Signal level becomes 300 mV ± 10 mV as shown in Fig. 5-7. 8 Press the ENTER key for the next adjustment. Fig. 5-6
8 Press the ENTER key for the next adjustment. 8 Adjust data with the ARROW keys so that the Video
11.2. Burst Phase Adjustment
Test Point: Video Output Connector 8 Aim the Camera at the Logarithmic Gray Scale Chart.
8 Set the Mode Switch of the Vectorscope to �NTSC� mode. 8 Adjust data with the ARROW keys so that the Burst Phase
Output signal level becomes 700 mV ± 50 mV as shown in Fig. 5-6.
8 Press the ENTER key for the next adjustment.
becomes 135° ± 1° as shown in Fig. 5-8.
NTSC mode
cy
PAL mode
cy R V
7. Manual Iris Adjustment A
8 After confirming the Iris close, press the ENTER key for
dø
20% dG
g
MG
g
R V
MG
YL
75% 100%
135 ± 1 °
b U
dø 10° 0° 10°
20% dG
YL
75% 100% b U
the next adjustment.
10° 0° 10°
90 ± 2 °
20% dG yl B
20% dG
yl
B
8. Manual Iris Adjustment B
8 After confirming the Iris open, press the ENTER key for
G
r
CY
mg
G
r
CY
mg
the next adjustment.
Fig. 5-8
9. Manual Iris Adjustment C
8 After confirming the Iris close, press the ENTER key for 8 Set the Mode Switch of the Vectorscope to �PAL� mode. 8 Adjust data with the ARROW keys so that the Burst Phase
the next adjustment.
10. Manual Iris Adjustment D
8 After confirming the Iris open, press the ENTER key for
becomes 90° ± 2° as shown in Fig. 5-8. 8 Press the ENTER key.
8
Set the Mode Switch of the Vectorscope to �NTSC� mode.
the next adjustment.
8 Adjust data with the ARROW keys so that the Burst Phase
11.1. Burst Level Adjustment
Test Point: Video Output Connector 8 Aim the Camera at the Logarithmic Gray Scale Chart.
8 Connect the terminated Oscilloscope with 75� to the
becomes 135° ± 1° as shown in Fig. 5-8. 8 Set the Mode Switch of the Vectorscope to �PAL� mode.
8 Adjust data with the ARROW keys so that the Burst Phase
becomes 90° ± 2° as shown in Fig. 5-8.
8 Repeat adjustment from 11.1 to 11.2 until both Burst Level
Video Output Connector. 8 Adjust data with the ARROW keys so that the Video Output Signal level becomes 300 mV ± 10 mV as shown in Fig. 5-7.
and Phase are adjusted to proper position as show in Fig. 5-7 and Fig. 5-8.
8 Press the ENTER key for the next adjustment.
� 11 �
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