Auto White Balance Adjustment - Sony Handycam CCD-TR86 Service Manual

15. Auto white balance adjustment

Purpose :
Adjust for correct auto white balance.
Adjustment error : Poor color reproduction.
Subject White pattern standard picture frame
Filter Color temperature correction filter
C14
Measurement Point
EVF or DDS display on monitor TV
Measuring Instrument
Adjustment Page F
Adjustment Address 4E, 4F
Specification Value R ratio = 2XX0h ± 40h
XX = Data at address : F5 on page F
( For example, when the data XX
is B8, the R ratio is 2B80h ± 40h
B ratio = YY80h ± 80h
YY = Data at address : F6 on page F
For example, when the data YY
(
is 5Eh, the B ratio is 5E80h ± 80h
Note 1 : Make this adjustment after "Auto white balance reference
data input" is completed.
Note 2 : Confirm that the "Camera-shaking" correction to OFF.
(TR96/TR620E/TR720E/TR740E/TR916 MODEL)
Note 3 : Confirm that the "Digital Zoom" is turned OFF.
(EXCEPT TR501E/TR503E MODEL)
Adjustment procedure:
Order Page Address
1
2 F F5
3 F F6
4 6 00
5 F 02
6
7 6 00
8 6 01
9 6 02
10 F 4E
11 6 02
12 F 4F
13
Processing after Adjustments:
Order Page Address
1 6 01
2 6 02
3 F 02
4
5 6 00
)
)
Data
Put on the color temperature correction filter C14 on the lens.
Read the data of this address. The read-out data should be used as the specification value
calculation data XX.
Read the data of this address. The read-out data should be used as the specification value
calculation data YY.
01 After setting the data, press the PAUSE button. (Preparation 1)
21 After setting the data, press the PAUSE button. (Preparation 2)
Turn off the UNREG power supply once, then turn it on.
01 After setting the data, press the PAUSE button.
35 After setting the data, press the PAUSE button.
04 After setting the data, press the PAUSE button. Sets the R ratio display mode.
Change data using the PLAY and STOP buttons until the R ratio data on the DDS
display becomes the specification value.
R ratio data = 2000h + 10h × D
05 After setting the data, press the PAUSE button. Sets the B ratio display mode.
Change data using the PLAY and STOP buttons until the B ratio data on the DDS
display becomes the specification value.
B ratio data = 80h + 100h × D
Press the PAUSE button.
Data
00 After setting the data, press the PAUSE button.
00 Releases the B ratio display mode.
00 After setting the data, press the PAUSE button. (End 2)
Turn off the UNREG power supply once, then turn it on.
00 After setting the data, press the PAUSE button. (End 1)
Procedure
(D = Page F, Address : F5 data)
F5 F5
(D = Page F, Address: F6 data)
F6 F6
Procedure
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