Sharp XG-MB50X Service Manual page 25

No. Adjusting point
7 Auto keystone
initialization
(20X only) and
audio output
check
Check items
No. Adjusting point
1 Adjustment of
RGB brightness
2 Adjustment of
Component
offset
3 Adjustment of
DLP Brightness
4 Video Contrast
adjustment
5 Adjustment of
Video Brightness
Adjusting conditions
1. Select the following group
and subjects.
Group : ADJUST
CW/Auto KS
Subject : CAL
Adjusting conditions
1. Select the following group
and subjects.
Group : CONFIRM/AD
Subject : R-BRIGHT
G-BRIGHT
B-BRIGHT
(Process GAMMA interlock)
1. Feed 10-step signal with
480P component 100%
amplitude.
2. Select the following group
and subjects.
Group : CONFIRM/AD
Subject : C-R-OS
C-B-OS
(Process GAMMA interlock)
1. Select the following group
and subject.
Group : CONFIRM/DLP
Subject : R-BLK
G-BLK
B-BLK
(Process GAMMA interlock)
1. Feed NTSC 100% wind
pattern signal. (Signal with
burst)
2. Select the following group
and subjects.
Group : CONIRM/
VIDEO
Subject : V-CONT
1. Feed NTSC 100% wind pat-
tern signal. (Signal with
burst)
2. Select the following group
and subject.
Group : CONFIRM/VIDEO
Subject : V-BRIGHT
Adjusting procedure
1. With the set placed on a level surface, press the EN-
TER key and check that K-SENS value is 0 ± 3. Check
that keystone is caused by tilting the unit.
2. Check that the start-up sound is heard from the
speaker when the ENTER key is pressed.
Adjusting procedure
1. Check the fixed value.
Fixed value : 127
1. Check the fixed value.
C-R-OS : 260
C-B-OS : 260
1. Check the fixed value.
Fixed value : 256
1. Check the fixed value.
Fixed value : 124
1. Check the fixed value.
Fixed value : 68
25
XG-MB50X
XR-11XC
XR-10X/S
XR-20X/S