Electrical Adjustment - Sharp XG-MB70X Serviceanleitung

No. Adjusting point
1 EEPROM
initialization
2 Adjustment of
CW index
3 R Contrast
adjustment
(manual or
automatic)
4 G Contrast
adjustment
(manual or
automatic)
5 B Contrast
adjustment
(manual or
automatic)
6 DTV Bright/
Contrast adjust-
ment

ELECTRICAL ADJUSTMENT

Adjusting conditions
1. Turn on the power (with the
lamp on) and warm up the
set for 15 minutes.
1. Feed 64 STEP color bar
(XGA 60 Hz) to input 1.
2. Select the following group
and subject.
Group: DLP
Subject: Index Delay
1. Send white/black window
pattern signals with 91%
(0.64 Vpp)/0% of amplitude
level of XGA 60Hz to input
1.
2. Select the following group
and subjects.
Group : AD
Subject : R-Contrast
(Process GAMMA interlock)
1. Send white/black window
pattern signals with 91%
(0.64 Vpp)/0% of amplitude
level of XGA 60Hz to input
1.
2. Select the following group
and subjects.
Group : AD
Subject : G-Contrast
(Process GAMMA interlock)
1. Send white/black window
pattern signals with 91%
(0.64 Vpp)/0% of amplitude
level of XGA 60Hz to input
1.
2. Select the following group
and subjects.
Group : AD
Subject : B-Contrast
(Process GAMMA interlock)
1. Select the following group
and subjects.
Group : DTV
Subject : Contrast
Bright
Adjusting procedure
» Make the following settings.
Press S3563 to call the process mode and execute
"SS2" on SS menu.
1. Adjust the lamp patterns of RGB so that smooth
patterns appear without color blend and noise.
R
G
B
1. Check the fixed value.
R-Bright: 63
2. Observe the chroma of 91% white window pattern
with CA100.
3. Increase the R-Contrast value on the screen with bit
dropouts. Adjust the value to +5 when bright red bit
dropouts occur on the black and the x value exceeds
30/100.
1. Check the fixed value.
G-Bright : 63
2. Observe the chroma of 91% white window pattern
with CA100.
3. Increase the G-Contrast value on the screen with bit
dropouts. Adjust the value to +5 when bright green
bit dropouts occur on the black and the x value ex-
ceeds 30/100.
1. Check the fixed value.
B-Bright: 63
2. Observe the chroma of 91% white window pattern
with CA100.
3. Increase the B-Contrast value on the screen with bit
dropouts. Adjust the value to +5 when bright blue bit
dropouts occur on the black and the x value exceeds
30/100.
1. Check the fixed value.
Contrast : 4
Bright : 40
25
XG-MB70X