JVC DT-V1710CG Service Manual page 67

COMPONENT SIGNAL WHITE BALANCE (LOW: D65) ADJUSTMENTS
Measuring Instruments
Card (Slot)
Test Points
Adjustment Points
Notes:
•
Perform the following adjustments after completing the Low-Light White Balance (Reference Value) Adjustment.
•
Set the COLOR TEMP./BAL. data in the Setup Menu to "00".
•
The values adjusted with WX become the reference values for the following adjustment. When this data is changed,
it is required to re-adjust the white balance data of all of the adjustment signals (Component, NTSC and PAL).
When re-adjusting the 1080/60i signal, use the WJ.
(1) Apply the 1080/60i component 10-step gray scale signal to INPUT A.
(2) Set "COLOR TEMP." of COLOR TEMP./BAL. in the Setup Menu to LOW.
(3) Set the PHASE, CHROMA, BRIGHT and CONTRAST potentiometers on the front panel to the center click positions.
(4) Adjust WX01 and WX03 in the Service Menu using the color temperature meter so that the color temperature is set as shown
below.
(Do not touch WX02.)
Color temperature: LOW (D65). x = 0.313, y = 0.329 (Reference value)
(5) Ensure that the white balance tracking is correct from the gray scale steps with lower color temperatures to those with higher
color temperatures. If the white balance tracking is deviated in darker steps, adjust WX04 to WX06 to correct it.
(Do not set the values of WX04 to WX06 no more than "50".)
(6) Vary the adjustment signal and adjustment data, and re-perform adjustments in steps 1 to 5 above (see Table 19).
Adjustment Signal
COMMON
1080/60i
1080/50i
1080/24psF
720/60p
720/50p
480/60i
(Common to 576/50i)
480/60p
(Common to 576/50p)
Signal generator (10-step gray scale signal)
Color temperature meter
Component/RGB Input Card (Slot 1)
W*01 (Drive (R)), W*03 (Drive (B)), W*04 (Cut Off (R)),
W*05 (Cut Off (G)), W*06 (Cut Off (B)) [Service Menu]
Function
Drive
Cut off
Drive
Cut off
Drive
Cut off
Drive
Cut off
Drive
Cut off
Drive
Cut off
Drive
Cut off
Drive
Cut off
Adjustment Data
R
WX01
WX04 WX05
WJ01
WJ04 WJ05
WN01
WN04 WN05
WP01
WP04 WP05
WR01
WR04 WR05
WT01
WT04 WT05
WF01
WF04 WF05
WH01
WH04 WH05
Table 19
G B
– WX03
WX06
– WJ03
WJ06
– WN03
WN06
– WP03
WP06
– WR03
WR06
– WT03
WT06
– WF03
WF06
– WH03
WH06
(No. 52152) 1-67