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8-2-24,
Color Reproduction Adjustment
(Method Using Oscilloscope)
Preeparation:
1) Select the page 5 and the address 00 with the adjustment
remote controller and set the data to 01.
1. Gain adjustment (ve-95 board)
2. Hue adjustment (VC-95 board)
Note: Confirm that "Indoor White Balance Adjustment" is
completed.
Adjusting method:
1) Select the adjustment page F with the adjustment remote
controller.
2)
Set the adjustment address to OA with the adjustment remote
controller and set the adjustment data to 80.
3)
Set the adjustment address to OB and set the adjustment data
to 80.
4)
Set the adjustment address to OC and set the adjustment data
to 60.
5)
Set the adjustment address to 09 and change the adjustment
data to set the chroma signal "red" level to 221 + 15 mVp-p.
6) Set the adjustment address to OA and change the adjustment
data to set the chroma signal "yellow" level to 147 +
11 mVp-p.
7)
Repeat steps 5) and 6).
8) Change the adjustment address to store the adjustment data
in the memory.
9)
Perform "Hue Adjustment".
Red
Yellow
+
-
147411 mVp-p
221415 mVp-p
Fig. 8-31.
Subject
Color bar chart standard picture frame
Subject
Color bar chart standard picture frame
;
Pin
(CAM C) of check point
:
CH1(X): Pin @ of MX-10 board (B-Y)
Measurement Point | array or pin @ (C OUT) of CN307
Measurement Point | Ci19/y); Pin @ of MX-10 board (B-Y
Measuring Instrument | Oscilloscope
Measuring Instrument | Oscilloscope (X-Y mode)
Adjustment Page
F
Adjustment Page
F
:
09 (R-Y GAIN)
,
OB (R-Y HUE)
Adjustment Address
OA (B-Y GAIN)
Adjustment Address
0C (BLY HUE)
'
Red level: 221 + 15 mVp-p
'
Various
color luminance _ points
Speco aue
Yellow level: 147 + 11 mVp-p
Specified Value,
within color reproduction frame.
Note: Make sure that "Indoor White Balance Adjustment" is
completed.
Adjusting method:
1) Match the "black" luminance point on the oscilloscope with
the origin of the color reproduction frame.
2)
Select the adjustment page F with the adjustment remote
controller,
3)
Change the adjustment data at adjustment addresses OB and
OC with the adjustment
remote
controller
to bring the
various color luminance points into the color reproduction
frame.
4) Check the hue reproduced on the monitor TV and fine adjust
the adjustment data at adjustment addresses OB and OC if
necessary.
5) Set the oscilloscope to the normal mode and connect it to
Pin © of CN307 and confirm that the specified value of "1.
Gain Adjustment" is satisfied. Change the data at the
adjustment address 09 and OA if the specified value is not
met.
6) Change the adjustment address to store the adjustment data
in the memory.
mow OFF woaiTMEXT woDe
lack luminance point
-¥
Fig. 8-32.
— 265 —
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