Electrical Adjustment - Sharp XG-MB50X Service Manual

XG-MB50X
XR-11XC
XR-10X/S
XR-20X/S
No. Adjusting point
1 EEPROM
initialization
2 Model setting
3 Adjustment of
CW index
4 R/G/B contrast
adjustment
(manual or
automatic)
5 RGB white
balance adjust-
ment
6 sRGB white
balance adjust-
ment

ELECTRICAL ADJUSTMENT

Adjusting conditions
1. Turn on the power (with the
lamp on) and warm up the
set for 15 minutes.
(Process menu)
1. Select the following group
and subject.
Group: CONFIRM
Subject: MODEL
1. Signal input: Send 256
STEP color bar.
XGA series (XGA60HZ),
SVGA series (SVGA60HZ)
2. Select the following group
and subject.
Group: ADJUST
CW/Auto KS
Subject: CW-INDEX.
1. Select the following group
and subjects.
Group : ADJUST
AD/DLP
Subject : R-CONT
G-CONT
B-CONT
(Process GAMMA interlock)
2. Feed white signal with the
amplitude level of 96%
(0.67Vpp). XGA series
(XGA60HZ), SVGA series
(SVGA60HZ)
1. Feed the 50% gray signal.
XGA series (XGA60HZ),
SVGA series (SVGA60HZ)
2. Select the following group
and subjects.
Group : ADJUST
AD/DLP
Subject : R-GAIN
G-GAIN
B-GAIN
1. Feed the 50% gray signal.
XGA series (XGA60HZ),
SVGA series (SVGA60HZ)
2. Select the following group
and subjects.
Group : CONFIRM/DLP
Subject : S-G-OS
S-B-OS
Adjusting procedure
» Make the following settings.
Press S2551 to call the process mode and execute
"SS2" on SS menu.
1. Set as below.
10X, 10S: 0
20X, 20S: 1 (default)
1. Feed the signal to input 1.
2. Select the adjustment item and adjust the lamp
gradation patterns of RGBW so that smooth
patterns without noise appear.
W
R
G
B
1. Measure chromaticity of the 96% white wind pattern
using CA100.
2. On the screen where bit dropouts occur, raise the
values of R/G/B-Contrast. Adjust the values so that
bright red, green, and blue bit dropouts appear on a
black background; and amounts of change in x value
of R and y values of G/B become 100/1000 or more.
3. If adjustment is performed manually watching the
screen, make adjustment so that bright red, green,
and blue bit dropouts appear on more than half of
the screen.
1. Raise the values of two of R/G/B-GAIN (default:
100) so that the following chromaticity values are
obtained using CL200.
x value: 300 ± 5
y value: 320 ± 5
1. Adjust S-G-OS and S-B-OS so that the following
chromaticity values are obtained using CL200.
x value: 313 ± 5
y value: 329 ± 5
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