Sony DSC-P2 (serv.man2) Service Manual ▷ View online
DSC-P2
5-33
1-5.
LCD SYSTEM ADJUSTMENTS
Before perform the camera system adjustments, check that the
specified values of “VIDEO SYSTEM ADJUSTMENTS” are sat-
isfied.
specified values of “VIDEO SYSTEM ADJUSTMENTS” are sat-
isfied.
Note 1:
Taken an extreme care not to destroy the liquid crystal
display module by static electricity when replacing it.
display module by static electricity when replacing it.
Note 2:
Set the LCD BRIGHTENSS (SET UP setting) to the
NORMAL.
NORMAL.
[Adjusting connector]
Most of the measuring points for adjusting the LCD system are
concentrated in CN706 of the SY-77 board.
Connect the Measuring Instruments via the CPC-9 jig (J-6082-
393-C).
The following table shows the Pin No. and signal name of CN
903.
concentrated in CN706 of the SY-77 board.
Connect the Measuring Instruments via the CPC-9 jig (J-6082-
393-C).
The following table shows the Pin No. and signal name of CN
903.
Pin No.
Signal Name
Pin No.
Signal Name
1
N. C.
10
HI UNREG
2
N. C.
11
LANC IN
3
N. C.
12
LANC OUT
4
REG_GND
13
N. C.
5
CPC_IN
14
N. C.
6
N. C.
15
N. C.
7
HSY
16
N. C.
8
PANEL_COM
17
N. C.
9
VG
18
N. C.
Fig. 5-1-18
CPC-9 jig
(J-6082-393-C)
(Note 1, 2)
(J-6082-393-C)
(Note 1, 2)
CPC cover
1
18
SY-77 board
CN706
CN706
Note 1: Don’t use the 12 pin flexible board of CPC-9 jig.
It causes damage to the unit.
Note 2: The old CPC-9 jig (Parts code: J-6082-393-B)
cannot be used, because it cannot operate
the adjusting remote commander.
the adjusting remote commander.
DSC-P2
5-34
1.
LCD Initial Data Input
Mode
PLAY
Signal
Arbitrary
Adjustment Page
A
Adjustment Address
84, 8D
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: A, and enter the data given in the following table.
1) Select page: 0, address: 01, and set data: 01.
2) Select page: A, and enter the data given in the following table.
Note:
Press the PAUSE button each time the data are set, as the
data are written to non-volatile memory (EEPROM).
data are written to non-volatile memory (EEPROM).
Address
Data
Remark
84
20
V-COM adj.
8D
2F
Fixed value
Processing after Completing Adjustments:
1) Select page: 0, address: 01, and set data: 00.
1) Select page: 0, address: 01, and set data: 00.
2. VCO Adjustment (SW-368 Board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 7 of CN706 on SY-77 board
(HSY)
(HSY)
Measuring Instrument
Frequency counter
Adjustment Page
A
Adjustment Address
82 (NTSC)
83 (PAL)
83 (PAL)
Specified Value
T = 15734
±
30 Hz (NTSC)
T = 15625
±
30 Hz (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
2
A
02
03
Press PAUSE button.
3
4
F1
13
(NTSC)
4
4
1D
82
(PAL)
Change the data and set the
5
A
82
frequency (f) to the
NTSC specified value.
NTSC specified value.
6
A
82
Press PAUSE button.
Change the data and set the
7
A
83
frequency (f) to the
PAL specified value.
PAL specified value.
8
A
83
Press PAUSE button.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button.
2
4
F1
00
(NTSC)
3
4
1D
80
(PAL)
4
0
01
00
DSC-P2
5-35
4.
Bright Adjustment (SW-368 Board)
Set the amplitude of the RGB decoder for driving the LCD to the
specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 9 of CN706 on SY-77 board
(VG)
External trigger: Pin 8 of CN706
on SY-77 board (PANEL_COM)
(VG)
External trigger: Pin 8 of CN706
on SY-77 board (PANEL_COM)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
85
Specified Value
A = 7.96
±
0.1 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
03
4
A
85
Change the data and set the
voltage (A) to the specified
value. (Note)
voltage (A) to the specified
value. (Note)
5
A
85
Press PAUSE button.
Note:
Adjust it between data 00 and FF.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
A
2H
Pedestal
Pedestal
A: Pedestal level difference between 1H period and
previous 1H period.
Fig. 5-1-20
3. Black Limit Adjustment (SW-368 Board)
Set the maximum amplitude of the RGB decoder for driving the
LCD to the specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
LCD to the specified value.
If deviated, the LCD screen image will be blackish or saturated
(whitish).
Mode
PLAY
Signal
Arbitrary
Measurement Point
Pin 8 of CN706 on SY-77 board
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
86
Specified Value
A = 8.3
±
0.1 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
08
Change the data and set the
4
A
86
voltage (A) to the specified
value. (Note 1)
value. (Note 1)
5
A
86
Press PAUSE button.
Note 1:
Adjust it between data 00 and 0F.
Note 2:
Check that the adjusted value of D range is within speci-
fied value after this adjustment is performed.
If not, perform the adjustment again.
fied value after this adjustment is performed.
If not, perform the adjustment again.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
Fig. 5-1-19
A
V
DSC-P2
5-36
2H
A
Pedestal
10 steps peak
A: Between the pedestal and 10 steps peak
5. Contrast Adjustment (SW-368 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 CN706 on SY-77 board
(VG)
External trigger: Pin 8 of CN706
on SY-77 board (PANEL COM)
(VG)
External trigger: Pin 8 of CN706
on SY-77 board (PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
8A
Specified Value
A = 2.50
±
0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
03
Change the data and set the
4
A
8A
voltage (A) to the specified
value. (Note)
value. (Note)
5
A
8A
Press PAUSE button.
Note 1:
Adjust it between data 00 and 7F.
Note 2:
After adjustment, check that Bright adjusted value is
within the specification.
When it is not, retry Bright adjustment and perform con-
trast adjustment.
within the specification.
When it is not, retry Bright adjustment and perform con-
trast adjustment.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
Fig. 5-1-21
6. VG Center Adjustment (SW-368 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 CN706 on SY-77 board
(VG)
(VG)
Measuring Instrument
Digital voltmeter
Adjustment Page
A
Adjustment Address
8B
Specified Value
A = 7.00
±
0.05 Vp-p
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
02
Change the data and set the
4
A
8B
DC voltage (A) to the specified
value. (Note)
value. (Note)
5
A
8B
Press PAUSE button.
Note:
Adjust it between data 00 and 7F.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
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