Sharp XG-MB50X-L - Notevision XGA DLP Projector, Service Manual

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XR-10X-L/XR-10S-L/XG-MB50X-L/XR-11XC-L/XR-HB007X-L
4 – 2
2 Adjustment of Component offset 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. Check the fixed value.
C-R-OS : 260
C-B-OS : 260
3 Adjustment of DLP Brightness 1. Select the following group and subject.
Group : CONFIRM/DLP
Subject :R-BLK
G-BLK
B-BLK
(Process GAMMA interlock) 1. Check the fixed value.
Fixed value : 256
4 Video Contrast adjustment 1. Feed NTSC 100% wind pattern signal.
(Signal with burst)
2. Select the following group and subjects.
Group : CONIRM/VIDEO
Subject : V-CONT 1. Check the fixed value.
Fixed value : 124
5 Adjustment of Video Brightness 1. Feed NTSC 100% wind pattern signal.
(Signal with burst)
2. Select the following group and subject.
Group : CONFIRM/VIDEO
Subject : V-BRIGHT 1. Check the fixed value.
Fixed value : 68
6 Adjustment of Video Tint 1. Feed split color bar.
2. Select the following group and subject.
Group : CONFIRM/VIDEO
Subject : V-HUE 1. Check the fixed value.
Fixed value : 128
7 Adjustment of Video color satura-
tion 1. Select the following group and subject.
Group : CONFIRM/VIDEO
Subject : V-COLOR 1. Check the fixed value.
Fixed value : 154
8 RGB tone reproduction adjust-
ment 1. Feed the SMPTE pattern signal. 1. Make sure the 100% and 95% white as well as the
0% and 5% black gradations are visible.
9 VIDEO white balance adjustment 1. Feed the 50% gray signal.
2. Select the following group and subjects.
Group :CONFIRM/VIDEO
Subject : V-R-OS
V-B-OS 1. V-R-OS is 132.
V-B-OS is 132.
10 White balance checking and
readjustment 1. RGB Inputt
sRGB Input
VIDEO Input
DTV Input
DVD Input Check that there is no deviation of white balance with
the monitor.
11 Off-timer performance 1. Select the following group and subjects.
Group :CONFIRM/CHECK
Subject : TEMP-OFF 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.
12 Thermistor performance checking 1. Heat the thermistor with a hair dryer. 1. Make sure that the temperature is indicated.
13 Auto sync performance checking 1. Feed the phase check pattern 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.
14 Monitor out check 1. Send signals to INPUT 1 and INPUT 2.
2. Connect another monitor to the monitor
out.
3. Connect the audio OUT. 1. Check that the same images as seen on the screen
appear on the connected monitor and that the sound
from the sound source connected to the audio OUT is
heard.
15 RS232C operation check 1. Connect the unit and a PC with the
RS232C cable. 1. Send a command from the PC, and check it func-
tions correctly.
16 Model name and version check 1. Select the following group.
Group : INFO/VERSION. 1. The model name appears in the MODEL field, and
the firmware version in the VERSION field. Check that
they are correct.
No. Adjusting point Adjusting conditions Adjusting procedure