Sony CyberShot DSC-P72 Service Manual page 43

12. CCD Linearity Check
Data picking is done to keep output linearity of the CCD imager,
even if the input level of CCD imager changes.
Mode STILL (
Subject Clear chart (Standard picture frame)
Specified value1 97 to 103
Specified value2 97 to 103
Note: If the data of page: 60, address: 02 is "01", select page: 60, address:
01, and write data: 00.
Switch setting:
ZOOM ........................................................................... WIDE end
CAMERA setting (Menu setting) ........................................ AUTO
Adjusting method:
Order Page Address Data
1
2
3 00 01 01
4 75 09
5 75 09 04
6 60 1F 80
7 77 F7
8 77 F7 42
9 77 F2
10 77 F2 02
11 60 14 90
12 60 12 9F
13
14 60 01 F9
15
16 60 E1
17 10 80
18 10 81
19
20 10 82
21 10 83
22
23 60 01 00
24 60 E1 00
25 77 72
26 77 72 30
27
28 60 01 F9
)
Procedure
Check that "1. Data Setting
during Camera System
Adjustments" is performed.
Check the picture frame. If
deviated, perform "4. Picture
Frame Setting".
Set the data.
Read the data, and memorize it.
Write the data.
Write the data.
Read the data, and memorize it.
Write the data.
Read the data, and memorize it.
Write the data.
Write the data.
Write the data.
Wait for 2 sec.
Write the data.
Wait for 2 sec.
Read the data, and check it is "08".
Read the data, and this data is
named D .
80
Read the data, and this data is
named D .
81
Calculate D using the
RG
following equation
(Hexadecimal calculation)
×100 + D
D = D
RG0 80 81
Read the data, and this data is
named D .
82
Read the data, and this data is
named D .
83
Calculate D using the
BG
following equation
(Hexadecimal calculation)
× 100 + D
D = D
BG0 82 83
Write the data.
Write the data.
Read the data, and memorize it.
Write the data.
Wait for 2 sec.
Write the data.
Order Page Address Data
29
30 60 E1
31 10 80
32 10 81
33
34 10 82
35 10 83
36
37 60 01
38 60 E1
39 77 72
40
41 60 01
42
43 60 E1
44 10 80
45 10 81
46
47 10 82
48 10 83
49
50 60 01
51 60 E1
52
53
6-23
DSC-P72
Procedure
Wait for 2 sec.
Read the data, and check it is "08".
Read the data, and this data is
named D .
80
Read the data, and this data is
named D .
81
Calculate D using the
RG
following equation
(Hexadecimal calculation)
× 100 + D
D = D
RGH 80 81
Read the data, and this data is
named D .
82
Read the data, and this data is
named D .
83
Calculate D using the
BG
following equation
(Hexadecimal calculation)
× 100 + D
D = D
BGH 82 83
00 Write the data.
00 Write the data.
10 Write the data.
Wait for 2 sec.
F9 Write the data.
Wait for 2 sec.
Read the data, and check it is "08".
Read the data, and this data is
named D .
80
Read the data, and this data is
named D .
81
Calculate D using the
RG
following equation
(Hexadecimal calculation)
× 100 + D
D = D
RGL 80 81
Read the data, and this data is
named D .
82
Read the data, and this data is
named D .
83
Calculate D using the
BG
following equation
(Hexadecimal calculation)
× 100 + D
D = D
BGL 82 83
00 Write the data.
00 Write the data.
Convert D , D , D
RG0 BG0 RGH
D , D and D to decimal
BGH RGL BGL
number, and obtain D
RG0
D ', D ', D ' and D
RGH BGH RGL
Calculate R/G ratio (H), B/G
ratio (H), R/G ratio (L) and B/G
ratio (L), using the following
equations (Decimal calculation)
R/G ratio (H) =
') ×100
(D ' / D
RGH RG0
B/G ratio (H) =
') × 100
(D ' / D
BGH BG0
R/G ratio (L) =
') × 100
(D ' / D
RGL RG0
B/G ratio (L) =
') ×100
(D ' / D
BGL BG0
,
', D ',
BG0
'.
BGL