Read Sony STR-DB1070 / STR-DB870 Service Manual online
13
STR-DB870/DB1070
SECTION 5
ELECTRICAL ADJUSTMENT
OSD Adjustment
(STR-DB1070 Model)
(STR-DB1070 Model)
Connection
Procedure:
1. Short the CN306 pin 4 on the VIDEO board to the GND.
2. Connect a frequency counter to the CN306 pin 2 on the
1. Short the CN306 pin 4 on the VIDEO board to the GND.
2. Connect a frequency counter to the CN306 pin 2 on the
VIDEO board.
3. Press the
I
/1
button to turn on the main power.
4. Press the
[SET UP]
button.
5. Press the
[<]
or
[>]
button to display “COLOR”.
6. Turn the JOG DIAL to display “NTSC”.
7. Press the
7. Press the
[>]
button to display “OSD H.POSITION”.
8. Adjust the CT302 so that the frequency counter reading is
3.57954 MHz.
9. Press the
[<]
button to display “NTSC”.
10. Turn the JOG DIAL to display “PAL”.
11. Press the
11. Press the
[>]
button to display “OSD H.POSITION”.
12. Adjust the CT301 so that the frequency counter reading is
4.43361 MHz.
13. Press the
I
/1
button to turn off the main power.
14. Connect a frequency counter to the CN306 pin 1 on the
VIDEO board.
15. Press the
I
/1
button to turn on the main power.
16. Press the
[SET UP]
button.
17. Press the
[>]
button to display “OSD V.POSITION”.
18. Adjust the CT303 so that the frequency counter reading is 7.20
MHz.
Note:
The steps 5, 6 and 9 to 12 should be performed to the models except
for the US and Canadian.
for the US and Canadian.
Adjustment and Connection Loacation:
VIDEO board
CN306 pin
1
or pin
2
+
–
–
frequency counter
IC304
IC310
CT303
CT302
CN306
1
4
CT301
Ver 1.2
– VIDEO BOARD (Component Side) –
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