Sony DSC-P3 (serv.man2) Service Manual ▷ View online
5-36
DSC-P3
2H
A
Pedestal
10 steps peak
A: Between the pedestal and 10 steps peak
6. Contrast Adjustment (SY-73 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).
fied value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 9 of CN902 (VG)
External trigger: Pin 8 of CN706
(PANEL COM)
External trigger: Pin 8 of CN706
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
D4
Specified Value
A = 2.50
±
0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
03
Change the data and set the
3
D
D4
voltage (A) to the specified
value.
value.
4
D
D4
Press PAUSE button.
5
D
D4
Read the data and this data is
named Dref.
named Dref.
6
D
CF
Dref
Press PAUSE button.
7
D
DF
Dref
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
7. Color Adjustment (SY-73 Board)
Set the color saturation to the standard value.
If, deviated, the color will be dark or light.
If, deviated, the color will be dark or light.
Mode
PLAY
Signal
Arbitray
Measurement Point
Pin 9 of CN902 (VG)
External trigger: Pin 8 of CN706
(PANEL COM)
External trigger: Pin 8 of CN706
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
D1
Specified Value
A = 350
±
50 mVp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
04
Change the data and set the
2
D
D1
voltage (A) to the specified
value.
value.
4
D
D1
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
Fig. 5-1-23
2H
A
Green
White 100%
A: Between the white 100% (Reference level) and green
Fig. 5-1-24
5-37
DSC-P3
8. VG Center Adjustment (SY-73 Board)
Set the center of VG signal for driving the LCD to the specified
value.
value.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 9 of CN902 (VG)
Measuring Instrument
Digital voltmeter
Adjustment Page
D
Adjustment Address
D6
Specified Value
A = 7.00
±
0.05 V
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
02
Change the data and set the
3
D
D6
DC voltage (A) to the specified
value.
value.
4
D
D6
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
Fig. 5-1-25
A
2H
9. PSIG Adjustment (SY-73 Board)
Set the common electrode drive signal level of LCD to the speci-
fied value.
fied value.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 8 of CN902
(PANEL_COM)
(PANEL_COM)
Measuring Instrument
Oscilloscope
Adjustment Page
D
Adjustment Address
DA
Specified Value
A = 5.0
±
0.1 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
02
3
D
DA
Change the data and set the PSIG
signal level (A) to the specified
value.
signal level (A) to the specified
value.
4
D
DA
Press PAUSE button.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
5-38
DSC-P3
10. V-COM Adjustment (SY-73 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.
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
between the section-A and
section-B is minimum
Note 1:
Perform “Bright Adjustment” and “Contrast Adjusstment”
before this adjustment.
before this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
02
3
4
10
02
4
D
D8
Change the data so that
brightness of the section A
and section B is equal.
brightness of the section A
and section B is equal.
5
D
D8
Read the data and this data is
named Dref.
named Dref.
6
Convert Dref to decimal
notation, and obtain Dref’.
(Note 2)
notation, and obtain Dref’.
(Note 2)
7
Calculate D
D8
’ using
following equations.
(decimal calculation)
D
(decimal calculation)
D
D8
’ = Dref’ – 13
8
Convert D
D8
’ to a hexadeci-
mal number, and obtain D
D8
.
(Note 2)
9
D
D8
D
D8
Press PAUSE button.
Note 2:
Refer to table 5-2-2. “Hexadecimal-decimal conversion
table”.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
4
F1
00
2
4
10
00
3
0
01
00
Fig. 5-1-26
A
A
A
A
B
B
B
B
11. White Balance Adjustment (SY-73 Board)
Correct the white balance.
If deviated, the LCD screen color cannot be reproduced.
If deviated, the LCD screen color cannot be reproduced.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Check on the LCD screen
Measuring Instrument
Adjustment Page
D
Adjustment Address
D2, D3
Specified Value
LCD screen must not be colored
Note 1:
Check the white balance only when replacing the fol-
lowing parts. If necessary, adjust them.
lowing parts. If necessary, adjust them.
1. LCD panel
2. Light induction plate
3. IC801
2. Light induction plate
3. IC801
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
4
F1
02
3
D
D2
60
Press PAUSE button.
(Intital value)
(Intital value)
4
D
D3
AA
Press PAUSE button.
(Intital value)
(Intital value)
5
Check that the LCD screen is
not colored. If not colored,
proceed to “Processing after
Completing Adjustments”.
not colored. If not colored,
proceed to “Processing after
Completing Adjustments”.
6
D
D2
Change the data so that the
LCD screen is not colored.
LCD screen is not colored.
D3
(Note 2)
Note 2:
To write in the non-volatile memory (EEPROM), press
the PAUSE button each time to set the data.
the PAUSE button each time to set the data.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
4
F1
00
2
0
01
00
5-39
DSC-P3
1-6.
SYSTEM CONTROL SYSTEM ADJUSTMENTS
1. Battery Down Adjustment
Set the battery end voltage.
If the voltage is incorrect, the life of battery will shorten.
The image at the battery end will also be rough.
If the voltage is incorrect, the life of battery will shorten.
The image at the battery end will also be rough.
Mode
CAMERA
Subject
Arbitrary
Measurement Point
Displayed data of page: 2,
address: 9A
address: 9A
Measuring Instrument
Adjusting remote commander
Adjustment Page
D
Adjustment Address
90 to 94
Connection:
1) Connect the regulated power supply and the digital voltmeter
1) Connect the regulated power supply and the digital voltmeter
to the battery terminal as shown in Fig. 5-1-27.
Preparations before adjustment:
1) Adjust the output voltage of the regulated power supply so
1) Adjust the output voltage of the regulated power supply so
that the digital voltmeter display is 4.2
±
0.1 Vdc.
2) Turn off the power supply.
3) Set the HOLD switch of the adjusting remote commander to
3) Set the HOLD switch of the adjusting remote commander to
“HOLD” (SERVICE position).
4) Turn on the power supply.
5) Insert the memory stick to the unit, and set the CAMERA mode.
5) Insert the memory stick to the unit, and set the CAMERA mode.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
6
2C
01
Decrease the output voltage
3
of the regulated power supply
so that digital voltmeter display
is 3.20
so that digital voltmeter display
is 3.20
±
0.01 Vdc.
4
2
9A
Read the data, and this data
is named Dref.
is named Dref.
5
D
90
Dref
Press PAUSE button.
6
Convert Dref to decimal notati
on and obtain Dref’. (Note)
on and obtain Dref’. (Note)
Calculate D
91
’, D
92
’, D
93
’
and D
94
’ using following
equations(decimal calculation)
7
D
91
’=Dref’+6
D
92
’=Dref’+23
D
93
’=Dref’+44
D
94
’=Dref’+55
Convert D
91
’, D
92
’, D
93
’ and
8
D
94
’ to a hexadecimal number,
and obtain D
91
, D
92
, D
93
and
D
94
(Note)
9
D
91
D
91
Press PAUSE button.
10
D
92
D
92
Press PAUSE button.
11
D
93
D
93
Press PAUSE button.
12
D
94
D
94
Press PAUSE button.
Note:
Refer to table 5-2-2. “Hexadecimal-decimal conversion
table”
table”
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
6
2C
00
2
0
01
00
1
18
Regulated power supply
(6.0 to 7.2 Vdc)
(6.0 to 7.2 Vdc)
CPC-9jig
(J-6082-393-C)
(J-6082-393-C)
Adjusting remote
commander
commander
Regulated power supply
(3.20
(3.20
±
0.01 Vdc)
Digital voltmeter
1
18
Fig. 5-1-27
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