Sony MDDISCAM DCM-M1, Service Manual

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