Sony CyberShot DSC-P72 Service Manual page 40

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