Auto White Balance Adjustment; White Balance Check - Sony MVC-FD75 Service Manual

8. Auto White Balance Adjustment

Adjust to the proper auto white balance output data.
If it is not correct, auto white balance and color reproducibility
will be poor.
Mode
Subject
Filter
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Note 1: "Auto White Balance Standard Data Input" must be
already finished.
Note 2: The right 4 digits of the displayed data of the LCD screen.
00 : XX : XX
Adjusting method:
Order Page Address Data
1
2 0 01 01
3 F 11 02
4 2 10 58
5
6
7
8 E 11 0A
9 2 01 3F
10 0 03 04
11 F D3
12 F D3
13 0 03 05
14 F D4
15 F D4
Processing after Completing Adjustment:
Order Page Address Data
1 2 01 00
2 0 03 00
3 2 10 00
4 E 11 15
5 F 11 00
6 0 01 00
CAMERA
Clear chart
(Color bar standard picture
frame)
Filter C14 for color temperature
correction
Check the DDS display on the
LCD screen (Note 2)
F
D3, D4
R ratio: 2B40 to 2BC0
B ratio: 5E40 to 5EC0
Displayed data
Procedure
Place the C14 filter on the
lens.
Press PAUSE button.
Press PAUSE button.
Turn off the HOLD switch.
Wait for 2 seconds.
Turn on the HOLD switch.
Press PAUSE button.
Press PAUSE button.
Change the data so that
average value of the DDS
displayed data (Note 2)
satisfied the R ratio specified
value.
Press PAUSE button.
Change the data so that
average value of the DDS
displayed data (Note 2)
satisfied the B ratio specified
value.
Press PAUSE button.
Procedure
Press PAUSE button.
Press PAUSE button.
Press PAUSE button.
Press PAUSE button.

9. White Balance Check

Mode
Subject
Filter
Measurement Point
Specified Value
Note 1: Right side 4 digits of data displayed at the LCD screen.
00 : XX : XX
Note 2: Data displayed at the lower right of the LCD screen.
00 : XX : XX
Adjusting method:
Order Page Address Data
1 0 01
2 F 11
2 2 10
3
4
5
7 0 03
8 2 56
9 2 01
10
11 0 03
12
13
14
Processing after Completing Adjustment:
Order Page Address Data
1 2 01
2 2 56
3 2 10
4 F 11
5 0 01
5-14
CAMERA
Clear chart
(Color bar standard picture
frame)
ND filter 1.0 and 0.3
Check the DDS display on the
LCD screen (Note 1, 2)
When data: 0F is set to page: 2,
address: 01 (Note 1)
R-Y: 00 to 04 or FC to FF
B-Y: 00 to 04 or FC to FF
When data: 00 is set to page: 0,
address: 03 (Note 2)
0E10 or more
R-Y
B-Y
Displayed data
Procedure
01
02 Press PAUSE button.
58 Press PAUSE button.
Turn off the HOLD switch.
Wait for 2 seconds.
Turn on the HOLD switch.
02
56 Press PAUSE button.
0F Press PAUSE button.
Check that the DDS
displayed data (Note 1) is in a
range of "00 to 04" or "FC to
FF".
00
Check that the DDS
displayed data (Note 2) is
more than "0E10".
Place the ND filter 1.3 (1.0 +
0.3) on the lens.
Check that the DDS
displayed data (Note 2) is less
than "0D00".
Procedure
00 Press PAUSE button.
00 Press PAUSE button.
00 Press PAUSE button.
00 Press PAUSE button.
00