Sharp Notevision XR-1X, Service Manual

Page: 27 / 142

27
XR-1X
ELECTRICAL ADJUSTMENT
1 EEPROM
initialization
1. Turn on the power (with the
lamp on) and warm up the
set for 15 minutes.
»
Make the following settings.
Press S2551 to call the process mode and execute
"SS2" on SS menu.
2 Adjustment of
CW index 1. Signal input: Feed 64
STEP color bar. (XGA 60
Hz)
2. Select the following group
and subject.
Group: ADJUST
CW/Auto KS
Subject: CW-INDEX.
No. Adjusting point Adjusting conditions Adjusting procedure
3 R/G/B Contrast
adjustment 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 60 Hz)
1. Adjust R, G, and B on the screen when bit dropouts
occur and the bright and colored part of the screen
is reduced by nearly half.
1. Feed the signal to input 1.
2. Select the adjustment item and adjust the lamp
gradation patterns of RGB so that smooth patterns
without noise appear.
R
G
B
4 Video Contrast
adjustment 1. Feed NTSC 100% white
pattern signal. (Signal with
burst)
2. Select the following group
and subjects.
Group : ADJUST
VIDEO
Subject : V-CONT
1. Adjust G on the screen when bit dropouts occur and
the bright and colored part of the screen is reduced
by nearly half.
5 RGB white
balance adjust-
ment 1. Feed the 50% gray signal.
(XGA 60Hz)
2. Select the following group
and subjects.
Group : ADJUST
AD/DLP
Subject : R-GAIN
B-GAIN
1. Adjust R-GAIN and B-GAIN so that the following
values are obtained:
x value: 300 ± 5
y value: 320 ± 5
6 sRGB white
balance adjust-
ment 1. Feed the 50% gray signal.
(XGA 60Hz)
2. Select the following group
and subjects.
Group : CONFIRM/DLP
Subject : S-G-OS
S-B-OS
1. Adjust S-G-OS and S-B-OS so that the following
values are obtained:
x value: 313 ± 5
y value: 329 ± 5