Auto White Balance Check - Sony DCM-M1 Service Manual

12. Auto White Balance Check

Clear chart (PTB-450)
Subject
(Color reproduction adjusting frame)
Color temperature correction filter C14
Filter
ND filter 1.0 and 0.3
VIDEO terminal of VIDEO/AUDIO terminals
Measurement point
(Camera-through screen)
Measuring instrument Vectorscope
Adjustment value Fig. 7-3-15 (A) – (C)
Checking method
Page Address
Steps
1
2 06 01
3
4 06 01
5
6
7
8
9
Processing after completion of check
Steps Page Address
1 06 01
R-Y
2 mm
Fig. 7-3-15 (A)
Data
Check that the lens is not covered with any filter.
0F Press the y key.
Check that the center of white luminance point is within a circle shown in Fig. 7-3-15 (A).
23 Press the y key.
Cover the lens with C14 filter.
Check that the center of white luminance point falls within a circle shown in Fig. 7-3-15 (B).
Remove the C14 filter, and cover the lens with ND filter 1.3 (1.0 + 0.3).
After making sure that the white luminance point pull-in motion finished, remove the ND
filter 1.3.
Check that the center of white luminance point falls within a circle shown in Fig. 7-3-15 (C).
Data
Press the y key.
00
1 mm
B-Y
2 mm
0.5 mm
Fig. 7-3-15 (B)
Work Description
Work Description
R-Y
B-Y
3 mm
3 mm
– 19 –
R-Y
3 mm
3 mm
2 mm
1 mm
Fig. 7-3-15 (C)
B-Y