DOWNLOAD Sony DSC-S75 (serv.man2) Service Manual ↓ Size: 5.33 MB | Pages: 96 in PDF or view online for FREE

Model
DSC-S75 (serv.man2)
Pages
96
Size
5.33 MB
Type
PDF
Document
Service Manual
Brand
Device
Digital Camera / LEVEL 2
File
dsc-s75-sm2.pdf
Date

Sony DSC-S75 (serv.man2) Service Manual ▷ View online

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
5-32
5. Bright Adjustment (SY-68 Board)
Set the level of the VIDEO signal for driving the LCD to the speci-
fied value.
If deviated, the LCD screen image will be 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
D0
Specified Value
A = 1.32 
±
 0.05 Vp-p
A
2H 
GAMMA1 limiter level
Pedestal
A: Between the pedestal and GAMMA1
 limiter level
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
10
01
3
4
F1
03
4
D
D0
Change the data and set the
voltage (A) to the specified value.
5
D
D0
Press PAUSE button.
6
D
D0
Read the data and this data is
named Dref.
7
Convert Dref to decimal
notation, and obtain Dref’.
(Note)
8
Calculate D
CE
’ and D
DE
’ using
following equations.
(decimal calculation)
D
CE
’ = Dref’ – 11
D
DE
’ = Dref’ + 24
9
Convert D
CE
’ and D
DE
’ to
hexadecimal numbers, and
obtain D
CE
 and D
DE
. (Note)
10
D
CE
D
CE
Press PAUSE button.
11
D
DE
D
DE
Press PAUSE button.
Note:
Refer to table 5-2-2. “Hexadecimal-decimal conversion
table”.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
4
F1
00
2
4
10
00
3
0
01
00
Fig. 5-1-21
5-33
7. Color Adjustment (SY-68 Board)
Set the color  saturation to the standard value.
If, deviated, the color will be dark or light.
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
D1
Specified Value
A = 348 
±
 50 mVp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
04
3
D
D1
Change the data and set the volt-
age (A) to the specified value.
4
D
D1
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
Fig. 5-1-23
A
2H
Green 
White 100%
A: Between the white 100% (Reference level) 
and green
6. Contrast Adjustment (SY-68 Board)
Set the level of the VIDEO signal for driving the LCD to the speci-
fied value.
If deviated, the LCD screen image will be 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
D4
Specified Value
A = 2.35 
±
 0.07 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
03
3
D
D4
Change the data and set the
voltage (A) to the specified value.
4
D
D4
Press PAUSE button.
5
D
D4
Read the data and this data is
named Dref.
6
D
CF
Dref
Press PAUSE button.
7
D
DF
Dref
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
Fig. 5-1-22
A
2H 
10 steps peak
Pedestal
A: Between the pedestal and 10 steps peak
5-34
Fig. 5-1-24
A
2H
8. V-COM Level Adjustment (SY-68 Board)
Set the common electrode drive signal level of LCD to the speci-
fied value.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 8 of CN401
(PANEL_COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
D6
Specified Value
A = 5.42 
±
 0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
D
D6
Change the data and set the
VCOM  signal level (A) to the
specified value.
3
D
D6
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
0
01
00
Fig. 5-1-25
A
A
A
A
B
B
B
B
9. V-COM Adjustment (SY-68 Board)
Set the DC bias of the common electrode drive signal of LCD to
the specified value.
If deviated, the LCD display will be move, producing flicker and
conspicuous vertical lines.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Check on the LCD screen
Measuring Instrument
Adjustment Page
D
Adjustment Address
D8
Specified Value
The brightness difference
between the section-A and
section-B is minimum
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
01
3
4
10
02
4
D
D8
Change the data so that the
brightness of the section A and
section B is equal.
5
D
D8
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
4
F1
00
2
4
10
00
3
0
01
00
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