Chapter 2. Electrical Adjustment Electrical Adjustment - Sharp PG-F200X Service Manual

PG-F200X
CHAPTER 2.
PG-F200X
ELECTRICAL ADJUSTMENT
[1] ELECTRICAL ADJUSTMENT
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 adjustment
6 sRGB white balance adjustment
Check items
No. Adjusting point
1 Adjustment of RGB brightness
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),
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. Amplitude level 96% (0.67Vpp) the signal
is input into computer 1.
XGA series (XGA60HZ)
1. 50% gray pattern signal is input into com-
puter 1.
XGA series (XGA60HZ)
2. Select the following group and subjects.
Group : ADJUST
AD/DLP
Subject : R-GAIN
G-GAIN
B-GAIN
1. 50% gray pattern signal is input into com-
puter 1.
XGA series (XGA60HZ)
2. Select the following group and subjects.
Group : CONFIRM/DLP
Subject : S-G-OS
S-B-OS
Adjusting conditions
1. Select the following group and subjects.
Group : CONFIRM/AD
Subject : R-BRIGHT
G-BRIGHT
B-BRIGHT
(Process GAMMA interlock)
2 – 1
Service Manual
•Make the following settings.
Press S2551 to call the process mode and execute
"SS2" on SS menu.
1. Set as below.
PG-F200X : 8
1. The signal is input into computer 1.
2. Select the adjustment item and adjust the lamp gra-
dation 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: 295 ± 5
y value: 310 ± 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
1. Check the fixed value.
Fixed value : 127
Adjusting procedure
Adjusting procedure