DSC-S75 (serv.man4) - Sony Digital Camera Service Manual (repair manual). Page 77

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5-31
4. D Range Adjustment (SY-68 Board)
Set the D range of the LCD driver to the specified value.
If deviated, the LCD screen will became blackish or saturated
(whitish)
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 9 of CN401 (VG)
External trigger: Pin 8 of CN401
(PANEL_COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
D5
Specified Value
A = 2.52 
±
 0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
03
3
D
D5
Change the data and set the volt-
age (A) to the specified value.
4
D
D5
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
A
2H 
Pedestal 
Pedestal
A: Pedestal level difference between 1H period and
previous 1H period.
3. VCO Adjustment (SY-68 Board)
Set the VCO free-run frequency.  If deviated, the LCD screen will
be blurred.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 7 of CN401 (HSY)
Measuring Instrument
Frequency counter
Adjustment Page
D
Specified Value
D7 (NTSC)
DD (PAL)
Specified Value
f = 15734 
±
 30 Hz (NTSC)
f = 16175 
±
 30 Hz (PAL)
Menu setting:
1) VIDEO OUT of SET UP menu................ NTSC (NTSC mode)
(This adjustment must be performed in NTSC mode, so don't
set the menu setting to “PAL”)
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
5
F0
01
3
D
D7
Change the data and set the
frequency (f) to the NTSC specified
value.
4
D
D7
Press PAUSE button.
4
D
DD
Change the data and set the
frequency (f) to the PAL specified
value.
5
D
DD
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
5
F0
00
2
0
01
00
Fig. 5-1-20
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