Auto White Balance Adjustment; White Balance Check - Sony DCR-PC100 Service Manual

12. 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.
Subject Clear chart
(Color reproduction adjustment frame)
Filter Filter C14 for color temperature
correction
Measurement Point Display data of page 1 (Note2)
Measuring Instrument Adjustment remote commander
Adjustment Page F
Adjustment Address 40, 41
Specified Value R ratio: 2C30 to 2D30
B ratio: 5F20 to 6020
Note1: Perform "Auto White Balance & LV Standard Data Input" before
this adjustment.
Note2: Displayed data of page 1 of the adjustment remote commander.
1 : XX : XX
Switch setting:
1) POWER .................................................................. CAMERA
2) NIGHT SHOT .................................................................. OFF
3) DIGITAL ZOOM (Menu display) ................................... OFF
Adjusting method:
1) Place the C14 filter for color temperature correction on the
lens.
2) Select page: 0, address: 01, and set data: 01.
3) Select page: F, address: 42 to 45, and note down the data of
each address.
4) Input the following data to page: F, addresses: 42 to 45.
Address
42
Data 2C
Note: Press the PAUSE button of the adjustment remote commander
each time to set the data.
5) Select page: 6, address: 01, set data: 83, and press the PAUSE
button.
6) Select page: 6, address: 01, set data: 81, and press the PAUSE
button.
(The auto white balance adjustment is performed and the
adjustment data is stored in page: F, address: 40 and 41.)
7) Select page: 6, address: 02, and check that the data is "01".
8) Select page: 6, address: 01, set data: 3F, and press the PAUSE
button.
9) Select page: 6, address: 04, and set data: 04.
10) Select page: 1, and check that the display data (Note2) satisfies
the R ratio specified value.
11) Select page: 6, address: 04, and set data: 05.
12) Select page: 1, and check that the display data (Note2) satisfies
the B ratio specified value.
13) Select page: F, address: 42 to 45, and input the data noted down
at step 3).
Note: After setting each data, be sure to press the PAUSE button of
the adjustment remote commander.
Processing after Completing Adjustments:
1) Select page: 6, address: 01, set data: 00, and press the PAUSE
button.
2) Select page: 6, address: 04, and set data: 00.
3) Select page: 0, address: 01, and set data: 00.
Display data
43 44 45
B0 5F A0

13. White Balance Check

Subject
Filter
Measurement Point
Measuring Instrument
Specified Value
Switch setting:
1) POWER .................................................................. CAMERA
2) NIGHT SHOT .................................................................. OFF
3) DIGITAL ZOOM (Menu display) ................................... OFF
Checking method:
1) Check that the lens is not covered with either filter.
2) Select page: 6, address: 01, set data: 0F, and press the PAUSE
button of the adjustment remote commander.
3) Check that the center of the white luminance point is within
the circle shown Fig. 5-1-12. (A).
4) Select page: 6, address: 01, set data: 23, and press the PAUSE
button.
5) Place the C14 filter on the lens.
6) Check that the center of the white luminance point settles in
the circle shown Fig. 5-1-12. (B).
7) Remove the C14 filter, and place the ND filter 1.5 (1.0+0.4+0.1)
on the lens.
8) Check that the white luminance point stopped moving, and then
remove the ND filter 1.5.
9) Check that the center of the white luminance point settles within
the circle shown Fig. 5-1-12. (C).
Processing after Completing Adjustments:
1) Select page: 6, address: 01, set data: 00, and press the PAUSE
button.
2mm
1.0mm
1.0mm
3mm
1.0mm
5-28
Clear chart
(Color reproduction adjustment frame)
Filter C14 for color temperature
correction
ND filter 1.0 and 0.4 and 0.1
Video output terminal
Vectorscope
Fig. 5-1-12. A to C
R-Y 2mm
B-Y
Fig. 5-1-12. (A)
R-Y
B-Y
3mm
3mm
Fig. 5-1-12. (B)
R-Y
3mm
2.0mm
B-Y
Fig. 5-1-12. (C)