Sharp XG-MB70X, Service Manual

Page: 28 / 161

28
XG-MB70X
No. Adjusting point Adjusting conditions Adjusting procedure
21 Adjustment of
DLP voltage 1. Read voltage rank of DLP
description.
2. Set the switch correspond-
ing to the rank which has
been read.
1. Carry out adjustment when DLP chip has been re-
placed or combination of chip and formatter has been
changed.
Rank:
B C D E
Setting value: 1 2 3 4
Adjustment when assembling
No. Adjusting point Adjusting conditions Adjusting procedure
22 Adjustment of
DLP Brightness 1. Select the following group
and subject.
Group : DLP
Subject : R-Bright
G-Bright
B-Bright
1. Check the fixed value.
Fixed value : 32
Checkpoints
23 RGB tone
reproduction
adjustment 1. Make sure the 100% and 95% white as well as the
0% and 5% black gradations are visible.
1. Feed the SMPTE pattern
signal.
24 White balance
checking and
readjustment 1. RGB Inputt, sRGB Input,
DTV Input, DVD Input,
VIDEO Input
Check that there is no deviation of white balance with
the monitor.
1. Select OFF from the process mode.
Make sure the off-timer starts with 5 minutes
onscreen and count one minute in one second.
And then indication is 0 minute, the power supply
of the set is cut off.
25 Off-timer per-
formance
1. Heat the thermistor with a
hair dryer.
1. Make sure that the temperature is indicated. 26 Thermistor
performance
checking
1. Feed the phase check pat-
tern signal.
1. In the VGA, SVGA, XGA and SXGA modes, make
sure the Clock, Phase, H-Pos and V-Pos settings
can be automatically adjusted.
27 Auto sync
performance
checking
1. Connect to a PC with a
USB cable.
1. Check that advance/reverse operation on PC screen
is possible by using remote control.
28 USB operation
check
1. Select the following group
and subjects.
Group : LAMP
Subject : OFF
1. Connect to a PC with a
LAN cable.
1. Check that communication is possible. 29 LAN operation
check