JVC TK-C400E, Service Manual

Page: 17 / 52

2-9
Item Mode Adjustment procedure
Measuring
instrument &
Input signals
No.
Measuring point (
*
)
Adjustment parts (
-
)
Adjustment level (
+
)
2.9 ADJUSTMENT OF WHITE BALANCE
1 White
balance
adjustment(1)
*
VIDEO OUT
(75 ohm Termination)
-
LENS IRIS
1) Select the “NEXT” button to display “White
balance (1)” on the title bar.
2) Adjust the lens iris to obtain the specified level
of white chip at the measuring point.
3) Press either “
䊱
” or “
䊲
” button of the
“AWBPRER”, then “AWBCNT” and “INTGR”
data are appeared in the “Show Controls”
box.
4) Press the “
䊱
” or “
䊲
” button of the
“AWBPRER” to be same data of AWB CNT’s
data. (last 2 digit)
5) Press the “
䊱
” or “
䊲
” button of the “WBR”
to be the same data of AWB CNT’s data. (last
2 digit)
6) Press the “
䊱
” or “
䊲
” button of the
AWBPREB to be the same data of INTGR’s
data. (last 2 digit)
7) Press the “
䊱
” or “
䊲
” button of the WBB to
be same data of INTGR’s data. (last 2 digit)
1) Select the “NEXT” button to display “White
balance (2)” on the title bar.
2) Adjust the lens iris to obtain the specified level
of white chip at the measuring point.
3) Press the “
䊱
” or “
䊲
” button of the PRE2R,
then AWB CNT and INTGR data are appeared
in the Show Controls box.
4) Press the “
䊱
” or “
䊲
” button of the PRE2R
to be same data of AWB CNT’s data. (last 2
digit)
5) Press the “
䊱
” or “
䊲
” button of the PRE2B
to be same data of INTGR’s data. (last 2 digit)
2 White
balance
adjustment(2)
*
VIDEO OUT
(75 ohm Termination)
-
LENS IRIS
U-ver.
E-ver.
0.714 Vp-p (100IRE)
0.7 Vp-p (100%)
+
Gray scale chart
Oscilloscope
(H-rate, 10:1) or
W.F.M
U-ver.
E-ver.
0.714 Vp-p (100IRE)
0.7 Vp-p (100%)
+
Gray scale chart
filter
(No. 80B+80B)
Oscilloscope
(H-rate, 10:1) or
W.F.M.
Auto-white balance (1)
Oscilloscope or Waveform monitor
AWBPRER WBR AWBPREB WBB
&H29 &H51 &H51 &H29
MCRDIP = 1
MCRAE = 1
AWBCNT = &H8229
INTGR = &H4B6151