Adjustment Of White Balance - JVC TK-C720TPU Service Manual

Measuring
No. Item instrument &
Input signals

2.9 ADJUSTMENT OF WHITE BALANCE

Note:
When the AWBCNT and INTGR data are displayed in the show controls box by pressing the
ing "B7" will be displayed in a case where there is a communication error. In this case, press the
input data values that do not contain "B7".
1 White Gray scale ch Gray scale chart
balance
adjustment(1) Oscilloscope
(H-rate, 10:1) or
W.F.M
Auto-white balance (1)
Oscilloscope or Waveform monitor
AWBPRER
&H29
2 White Gray scale chart
balance filter
adjustment (No. 80B+80B)
(80B+80B)
Oscilloscope
(H-rate, 10:1) or
W.F.M.
Mode
MCRDIP = 1
MCRAE = 1
AWBCNT = &H8229
INTGR = &H4B6151
WBR AWBPREB
&H29 &H51
Measuring point (*)
Adjustment parts (-)
Adjustment level (+)
* MONITOR OUT
1) Click the "NEXT" button.
(75 ohm Termination) 2) Adjust the lens iris to obtain the specified level
- LENS IRIS
3) Click either "
+
U-ver. 0.714 Vp-p (100IRE)
E-ver. 0.7 Vp-p (100%)
4) Using the keyboard input the same value as
5) Using the keyboard input the same value as
6) Using the keyboard input the same value as
7) Using the keyboard input the same value as
WBB
&H51
* MONITOR OUT
1) Click the "NEXT" button.
(75 ohm Termination) 2) Adjust the lens iris to obtain the specified level
- LENS IRIS
3) Click the " " or " " button of the PRE2R,
+
4) Using the keyboard input the same value as
U-ver. 0.714 Vp-p (100IRE)
E-ver. 0.7 Vp-p (100%)
5) Using the keyboard input the same value as
Adjustment procedure
or button, data contain-
or button again and
of white chip at the measuring point.
" or " " button of the
"AWBPRER", then "AWBCNT" and "INTGR"
data are appeared in the "Show Controls"
box.
for the "AWBCNT" last 2 digits into the
AWBPRER box, press the "ENTER" button.
for the "AWBCNT" last 2 digits into the WBR
box, press the "ENTER" button.
for the "INTGR" last 2 digits into the
AWBPREB box, press the "ENTER" button.
for the "INTGR" last 2 digits into the WBB
box, press the "ENTER" button.
of white chip at the measuring point.
then AWB CNT and INTGR data are appeared
in the Show Controls box.
for the "AWBCNT" last 2 digits into the
PRE2R box, press the "ENTER" button.
for the "INTGR" last 2 digits into the PRE2B
box, press the "ENTER" button.
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