Sony Cyber-Shot DSC-P72, Service Manual

Page: 40 / 74

6-20
DSC-P72
9. Auto White Balance 3200K Check
Check that the white balance standard data at 3200K are inputted
properly.
Mode STILL ( )
Subject Clear chart
(Standard picture frame)
Measurement Point Data of page: 10, address: 08, 09, 0A,
0B, 59, 5B
Measuring Instrument Data of page: 6F, address: 74, 76, B5
Specified value 1 R ratio = 3F00 to 4100
Specified value 2 B ratio = 3F00 to 4100
Specified value 3 R-Y data = 7A to 86
Specified value 4 B-Y data = 7A to 86
Specified value 5 R/G data = 20 to 60
Specified value 6 B/G data = 10 to 40
Specified value 7 00
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 Procedure
1 Check that “1. Data Setting during
Camera System Adjustments” is
performed.
2 Check the picture frame.
If deviated, perform “4. Picture
Frame Setting”.
3 00 01 01 Set the data.
4 6F B5 FF Write the data.
3200K standard data Check (1)
5 60 37 0D Write the data.
6 60 01 11 Write the data.
7 Wait for 1 sec.
8 60 38 Read the data, and check it is “01”.
9 60 01 C1 Write the data.
10 Wait for 1 sec.
11 60 02 Read the data, and check it is “01”.
12 10 08 Read the data, and this data is
named D
08
.
13 10 09 Read the data, and this data is
named D
09
.
14 Calculate R ratio using the
following equation
(Hexadecimal calculation)
R ratio = D
08
×
100 + D
09
15 Check that R ratio satisfies the
specified value1.
16 10 0A Read the data, and this data is
named D
0A
.
17 10 0B Read the data, and this data is
named D
0B
.
Order Page Address Data Procedure
18 Calculate B ratio using the
following equation
(Hexadecimal calculation)
B ratio = D
0A
×
100 + D
0B
19 Check that B ratio satisfies the
specified value2.
20 10 59 Read the data (R-Y data), and check
it satisfies the specified value3.
21 10 5B Read the data (B-Y data), and check
it satisfies the specified value4.
22 60 01 00 Write the data.
3200K standard data Check (2)
23 6F 74 Read the data (R/G data), and check
it satisfies the specified value 5.
24 6F 76 Read the data (B/G data), and check
it satisfies the specified value 6.
25 6F B5 Read the data, and check it
satisfies the specified value 7.
Processing after Completing Adjustments:
Order Page Address Data Procedure
1 60 37 00 Write the data.
2 60 01 00 Write the data.
3 Perform next adjustments.
If finish the camera system
adjustments, release the data
setting.
(See “1. Data Setting during
Camera System Adjustments”.)