Read Sony DSC-P3 (serv.man2) Service Manual online
5-33
DSC-P3
3. VCO Adjustment (SY-73 Board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
PLAY
Signal
Arbitrary
Measurement Point
CH1: Pin 7 of CN902
(HSY)
CH2: Video terminal of A/V
OUTjack
(75
(75
Ω
terminated)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
D7 (NTSC)
DD (PAL)
DD (PAL)
Specified Value
T = 2.04
±
0.1
µ
s (NTSC)
T = 2.63
±
0.1
µ
s (PAL)
Menu setting:
1) VIDEO OUT of SET UP setting
1) VIDEO OUT of SET UP setting
.................................. NTSC (NTSC mode)
(This adjustment must be performed in NTSC mode, so don’t
set the menu setting to “PAL” )
set the menu setting to “PAL” )
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Change the data and set the
2
D
D7
phase difference (T) to the
NTSC specified value.
NTSC specified value.
3
D
D7
Press PAUSE button.
Change the data and set the
4
D
DD
phase difference (T) to the
PAL specified value.
PAL specified value.
5
D
DD
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
0
01
00
H
T
CH2
magnified
CH1
CH2
CH1
T: Between the center of HSY signal rising and
VIDEO SYNC signal rising
Fig. 5-1-20
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