Sharp XG-MB70X Service Manual

25
XG-MB70X
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 S3563 to call the process mode and execute
"SS2" on SS menu.
2 Adjustment of
CW index
1. Feed 64 STEP color bar
(XGA 60 Hz) to input 1.
2. Select the following group
and subject.
Group: DLP
Subject: Index Delay
No. Adjusting point Adjusting conditions Adjusting procedure
3R Contrast
adjustment
(manual or
automatic)
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. 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. Adjust the lamp patterns of RGB so that smooth
patterns appear without color blend and noise.
R
G
B
4G Contrast
adjustment
(manual or
automatic)
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. 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.
5B Contrast
adjustment
(manual or
automatic)
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. 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.
6 DTV Bright/
Contrast adjust-
ment
1. Select the following group
and subjects.
Group : DTV
Subject : Contrast
Bright
1. Check the fixed value.
Contrast : 4
Bright : 40

Sharp XG-MB70X Specifications

General

Brand	Sharp
Model	XG-MB70X
Category	Projector
Language	English