Sony DSC-P2 (serv.man2) Service Manual ▷ View online
DSC-P2
5-37
8.
V-COM Adjustment (SW-368 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
A
Adjustment Address
84
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 Adjustment”
before this adjustment.
before this adjustment.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
2
A
02
03
Press PAUSE button
3
4
F1
82
4
A
84
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
A
84
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
84
’ using
following equations.
(decimal calculation)
D
(decimal calculation)
D
84
’ = Dref’ – 02
8
Convert D
84
’ to a hexadeci-
mal number, and obtain D
84
.
(Note 2)
9
A
84
D
84
Press PAUSE button. (Note 3)
Note 2:
Refer to table 5-2-2. “Hexadecimal-decimal conversion
table”.
Note 3:
Adjust it between data 00 and 3F.
Processing after Completing Adjustments:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE buttton
2
4
F1
00
3
0
01
00
Fig. 5-1-23
A
A
A
A
B
B
B
B
Fig. 5-1-22
A
2H
7. PSIG Gray Adjustment (SW-368 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 CN706 on SY-77 board
(PANEL COM)
(PANEL COM)
Measuring Instrument
Oscilloscope
Adjustment Page
A
Adjustment Address
87
Specified Value
A = 5.0
±
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
02
4
A
87
Change the data and set the PSIG
signal level (A) to the specified
value. (Note)
signal level (A) to the specified
value. (Note)
5
A
87
Press PAUSE button.
Note:
Adjust it between data 00 and 7F.
Processing after Completing Adjustment:
Order Page Address Data
Procedure
1
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
DSC-P2
5-38
9.
White Balance Adjustment (SW-368 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
A
Adjustment Address
88, 89
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
A
02
03
Press PAUSE button
3
4
F1
02
4
A
88
94
Press PAUSE button.
(Initial value)
(Initial value)
5
A
89
7A
Press PAUSE button.
(Initial value)
(Initial value)
6
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”.
7
A
88
Change the data so that the
LCD screen is not colored.
LCD screen is not colored.
89
(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
A
02
00
Press PAUSE button
2
4
F1
00
3
0
01
00
DSC-P2
5-39
5-2. SERVICE MODE
2-1.
ADJUSTING REMOTE COMMANDER
The adjusting remote commander is used for changing the calcu-
lation coefficient in signal processing, EVR data, etc. The adjust-
ing remote commander performs bi-directional communication
with the unit using the remote commander signal line (LANC).
The resultant data of this bi-directional communication is written
in the non-volatile memory.
lation coefficient in signal processing, EVR data, etc. The adjust-
ing remote commander performs bi-directional communication
with the unit using the remote commander signal line (LANC).
The resultant data of this bi-directional communication is written
in the non-volatile memory.
1.
Used the Adjusting Remote Commander
1) Connect the adjusting remote commander to the CN706 on
the SY-77 Board via CPC-9 jig (J-6082-393-C).
2) Set the HOLD switch of the adjusting remote commander to
“HOLD” (SERVICE position).
3) Turn on the power with the POWER switch of the unit.
If it has been properly connected, the LCD on the adjusting re-
mote commander will display as shown in Fig. 5-2-1.
If it has been properly connected, the LCD on the adjusting re-
mote commander will display as shown in Fig. 5-2-1.
Table 5-2-1
• Changing the address
The address increases when the FF (M) button is pressed,
and decreases when the REW (M) button is pressed. There
are altogether 256 addresses, from 00 to FF.
and decreases when the REW (M) button is pressed. There
are altogether 256 addresses, from 00 to FF.
• Changing the data (Data setting)
The data increases when the PLAY (N) button is pressed,
and decreases when the STOP (x) button is pressed. There
are altogether 256 data, from 00 to FF.
and decreases when the STOP (x) button is pressed. There
are altogether 256 data, from 00 to FF.
• Writing the adjustment data
The PAUSE button must be pressed to write the adjustment
data in the nonvolatile memory. (The new adjustment data
will not be recorded in the nonvolatile memory if this step is
not performed)
data in the nonvolatile memory. (The new adjustment data
will not be recorded in the nonvolatile memory if this step is
not performed)
2.
Precautions upon Using the Adjusting Remote
Commander
Commander
Mishandling of the adjusting remote commander may erase the
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjust-
ments and new adjustment data after each adjustment.
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjust-
ments and new adjustment data after each adjustment.
0 : 00 : 00
Page
Data Address
4) Operate the adjusting remote commander as follows.
• Changing the page
The page increases when the EDIT SEARCH + button is
pressed, and decreases when the EDIT SEARCH – button is
pressed. There are altogether 16 pages, from 0 to F.
pressed, and decreases when the EDIT SEARCH – button is
pressed. There are altogether 16 pages, from 0 to F.
Fig. 5-2-1
Hexadecimal
0 1 2 3 4 5 6 7 8 9 A B C D E F
notation
LCD Display
0 1 2 3 4 5 6 7 8 9 A b c d E F
Decimal notation
0 1 2 3 4 5 6 7 8 9 1011 12 1314 15
conversion value
DSC-P2
5-40
2-2.
DATA PROCESS
The calculation of the adjusting remote commander display data
(hexadecimal notation) are required for obtaining the adjustment
data of some adjustment items. In this case, after converting the
hexadecimal notation to decimal notation, calculate and convert
the result to hexadecimal notation, and use it as the adjustment
data. Table 5-2-2. indicates the hexadecimal notation- the deci-
mal notation, calculation table.
(hexadecimal notation) are required for obtaining the adjustment
data of some adjustment items. In this case, after converting the
hexadecimal notation to decimal notation, calculate and convert
the result to hexadecimal notation, and use it as the adjustment
data. Table 5-2-2. indicates the hexadecimal notation- the deci-
mal notation, calculation table.
Hexadecimal nontation-Decimal notation
Note :
( ) indicate the adjusting remote control unit display.
(Example)
In the case that the adjusting remote control unit display are BD (bd).
As the upper digit of the hexadecimal notation is B (b), and the lower digit is D (d), the intersection “189” of
the1 and 2 in the above table is the decimal notation to be calculated.
As the upper digit of the hexadecimal notation is B (b), and the lower digit is D (d), the intersection “189” of
the1 and 2 in the above table is the decimal notation to be calculated.
Table 5-2-2
The lower digits of the
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
hexadecimal notation
The upper digits of the
(
A
) (
b
) (
c
) (
d
) (
E
) (
F
)
hexadecimal notation
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
2
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
3
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
4
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
5
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
6
96
97
98
99
100 101 102 103 104 105 106 107 108 109 110 111
7
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
8
128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143
9
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
A (
A
)
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
B (
b
)
176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191
C (
c
)
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
D (
d
)
208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
E (
E
)
224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
F (
F
)
240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
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