Sony DSC-P32 (serv.man4) Service Manual ▷ View online
6-31
DSC-P32
Address
80
81
82
83
84
85
86
87
88
89
8A
8B
92
93
94
95
A3
A4
Remark
Fixed data
Fixed data
VCO adj.
VCO adj.
V COM adj.
Bright adj.
Fixed data
P sig level adj.
White balance adj.
White balance adj.
Contrast adj.
VG center adj.
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
4E
FF
80
90
6D
16
08
87
8D
59
38
00
05
0C
9F
1F
24
00
Data
COVER
COVER
1-5.
LCD SYSTEM ADJUSTMENT
Note:
When replacing the LCD unit, be careful to prevent damages caused
by static electricity.
by static electricity.
SETUP setting:
LCD BRIGHTNESS (SETUP1) ............................ NORMAL
LCD BACKLIGHT (SETUP1) ................................ BRIGHT
VIDEO OUT (SETUP2) ............................................... NTSC
(Adjustments must be performed in NTSC mode, so don’t set
the setup setting to “PAL”.)
LCD BACKLIGHT (SETUP1) ................................ BRIGHT
VIDEO OUT (SETUP2) ............................................... NTSC
(Adjustments must be performed in NTSC mode, so don’t set
the setup setting to “PAL”.)
[Measuring points]
The measuring points when using the oscilloscope or the digital
voltmeter are CL802 (Pin ws of IC801 (VG)) and CL803 (Pin wj of
IC801) of SY-84 board.
voltmeter are CL802 (Pin ws of IC801 (VG)) and CL803 (Pin wj of
IC801) of SY-84 board.
1. LCD Initial Data Input (1)
Mode
PLAY (
)
Signal
Arbitrary
Adjustment Page
4F
Adjustment Address
80 to 8B, 92 to 95, A3, A4
Adjusting method:
1)
1)
Select page: 00, address: 01, and set data: 01.
2)
Select page: 4F, and write the data in the following table.
3)
Select page: 00, address: 01, and set data: 00.
Fig. 6-1-15.
1
12
36 25
48
13
37
24
IC801
2
38
1
39
CN702
CL803
SY-84 board
6-32
DSC-P32
2. LCD Initial Data Input (2)
Mode
PLAY (
)
Signal
Arbitrary
Adjustment Page
5F
Adjustment Address
3A to 3F
Adjusting method:
1)
1)
Select page: 00, address: 01, and set data: 01.
2)
Select page: 5F, and write the data in the following table.
3)
Select page: 00, address: 01, and set data: 00.
3. VCO Adjustment (SY-84 board)
Set the VCO free-run frequency. If deviated, the LCD screen will
be blurred.
be blurred.
Mode
PLAY (
)
Signal
Arbitrary
Measurement Point
Check on LCD display
Measuring Instrument
Adjustment Page
4F
Adjustment Address
82, 83
Setup setting:
Adjusting method:
Order Page Address Data
Procedure
1
00
01
01
Set the data.
2
40
F1
09
Write the data.
3
4F
02
03
Write the data.
4
4F
82
80
Write the data.
5
4F
82
Increase the data, and stop it
when the LCD screen just begins
to fall into the disorder.
when the LCD screen just begins
to fall into the disorder.
6
4F
82
Read the data, and this data is
named D
named D
H
.
7
4F
82
80
Write the data.
8
4F
82
Decrease the data, and stop it
when the LCD screen just begins
to fall into the disorder.
when the LCD screen just begins
to fall into the disorder.
9
4F
82
Read the data, and this data is
named D
named D
L
.
10
Calculate D
82
using following
equation.
(Hexadecimal calculation.)
D
(Hexadecimal calculation.)
D
82
= (D
H
+ D
L
)/2
11
4F
82
D
82
Write the data.
12
Calculate D
83
using following
equation.
(Hexadecimal calculation.)
D
(Hexadecimal calculation.)
D
83
= D
82
+ 16
13
4F
83
D
83
Write the data.
14
4F
02
00
Write the data.
15
40
F1
00
Write the data.
16
00
01
00
Set the data.
Address
3A
3B
3C
3D
3E
3F
Remark
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
Fixed data
57
FE
02
5A
00
01
Data
6-33
DSC-P32
4. Bright Adjustment (SY-84 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
value. If deviated, the screen image will be blackish or saturated
(whitish).
Note:
Do either of “Adjustment without Using Oscilloscope” or
“Adjustment Using Oscilloscope”.
“Adjustment Using Oscilloscope”.
4-1. Adjustment without Using Oscilloscope
Mode
PLAY (
)
Signal
Arbitrary
Measurement Point
Data of page: 40, address: 11, 12
Measuring Instrument
Adjustment Page
4F
Adjustment Address
85
Specified Value
0D7 to 0DF
Adjusting method:
Order Page Address Data
Procedure
1
00
01
01
Set the data.
2
40
F1
08
Write the data.
3
4F
02
03
Write the data.
4
40
10
00
Write the data.
5
40
10
90
Write the data.
6
40
11
Read the data, and this data is
named D
named D
11A
.
7
40
12
Read the data, and this data is
named D
named D
12A
.
8
40
10
91
Write the data.
9
40
11
Read the data, and this data is
named D
named D
11B
.
10
40
12
Read the data, and this data is
named D
named D
12B
.
11
Calculate D
A
and D
B
using
following equation.
(Hexadecimal calculation.)
(Note1)
(Hexadecimal calculation.)
(Note1)
D
A
= (D
11A
×
4 + D
12A
/ 40)
D
B
= (D
11B
×
4 + D
12B
/ 40)
12
Calculate the signal level using
following equation.
(Hexadecimal calculation.)
When D
following equation.
(Hexadecimal calculation.)
When D
A
D
B
Signal level = D
A
– D
B
When D
A
< D
B
Signal level = D
B
– D
A
13
When the signal level satisfies the
specified value proceed to step 16,
in case of others proceed to step
14.
specified value proceed to step 16,
in case of others proceed to step
14.
14
4F
85
Change the data. (Note2)
15
4F
85
Write the data, and return to step
4.
4.
16
4F
02
00
Write the data.
17
40
F1
00
Write the data.
18
00
01
00
Set the data.
Note1:
When dividing D
12A
or D
12B
by 40. If there is a fraction below
decimal point, truncate it.
Note2:
When the signal level is smaller than specified value, increase the
data.
data.
4-2. Adjustment Using Oscilloscope
Mode
PLAY (
)
Signal
Arbitrary
Measurement Point
CL802 (Pin ws of IC801) (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
4F
Adjustment Address
85
Specified Value
A = 2.95 ± 0.05V
Adjusting method:
Order Page Address Data
Procedure
1
00
01
01
Set the data.
2
40
F1
08
Write the data.
3
4F
02
03
Write the data.
4
4F
85
Change the data and set the
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
voltage (A) between the reversed
waveform pedestal and non-
reversed waveform pedestal to
the specified value.
5
4F
85
Write the data.
6
4F
02
00
Write the data.
7
40
F1
00
Write the data.
8
00
01
00
Set the data.
Fig. 6-1-16.
Pedestal
Pedestal
2H
A
6-34
DSC-P32
5. Contrast Adjustment (SY-84 board)
Set the level of the VIDEO signal for driving the LCD to the specified
value. If deviated, the screen image will be blackish or saturated
(whitish).
value. If deviated, the screen image will be blackish or saturated
(whitish).
Note:
Do either of “Adjustment without Using Oscilloscope” or
“Adjustment Using Oscilloscope”.
“Adjustment Using Oscilloscope”.
5-1. Adjustment without Using Oscilloscope
Mode
PLAY (
)
Signal
Arbitrary
Measurement Point
Data of page: 40, address: 11, 12
Measuring Instrument
Adjustment Page
4F
Adjustment Address
8A
Specified Value
0B0 to 0B8
Adjusting method:
Order Page Address Data
Procedure
1
00
01
01
Set the data.
2
40
F1
01
Write the data.
3
4F
02
03
Write the data.
4
40
10
00
Write the data.
5
40
10
90
Write the data.
6
40
11
Read the data, and this data is
named D
named D
11A
.
7
40
12
Read the data, and this data is
named D
named D
12A
.
8
40
10
91
Write the data.
9
40
11
Read the data, and this data is
named D
named D
11B
.
10
40
12
Read the data, and this data is
named D
named D
12B
.
11
Calculate D
A
and D
B
using
following equation.
(Hexadecimal calculation.)
(Note1)
(Hexadecimal calculation.)
(Note1)
D
A
= (D
11A
×
4+ D
12A
/ 40)
D
B
= (D
11B
×
4+ D
12B
/ 40)
12
Calculate the signal level using
following equation.
(Hexadecimal calculation.)
When D
following equation.
(Hexadecimal calculation.)
When D
A
D
B
Signal level = D
A
– D
B
When D
A
< D
B
Signal level = D
B
– D
A
13
When the signal level satisfies the
specified value proceed to step 16,
in case of others proceed to step
14.
specified value proceed to step 16,
in case of others proceed to step
14.
14
4F
8A
Change the data. (Note2)
15
4F
8A
Write the data, and return to step
4.
4.
16
4F
02
00
Write the data.
17
40
F1
00
Write the data.
18
00
01
00
Set the data.
Note1:
When dividing D
12A
or D
12B
by 40. If there is a fraction below
decimal point, truncate it.
Note2:
When the signal level is smaller than specified value, increase the
data.
data.
5-2. Adjustment Using Oscilloscope
Mode
PLAY (
)
Signal
Arbitrary
Measurement Point
CL802 (Pin ws of IC801) (VG)
Measuring Instrument
Oscilloscope
Adjustment Page
4F
Adjustment Address
8A
Specified Value
A = 2.70 ± 0.05V
Adjusting method:
Order Page Address Data
Procedure
1
00
01
01
Set the data.
2
40
F1
01
Write the data.
3
4F
02
03
Write the data.
4
4F
8A
Change the data and set the
voltage (A) to the specified
value.
voltage (A) to the specified
value.
5
4F
8A
Write the data.
6
4F
02
00
Write the data.
7
40
F1
00
Write the data.
8
00
01
00
Set the data.
Fig. 6-1-17.
White(100%)
White(100%)
A
2H
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