Sharp PG-MB56X Service Manual page 26

PG-MB56X/PG-MB66X/XG-MB55X-L/XG-MB65X-L/XG-MB67X-L
Check items
No. Adjusting point
1 1 Adjustment of RGB brightness
2 Adjustment of Component offset
3 Adjustment of DLP Brightness
4 Video Contrast adjustment
5 Adjustment of Video Brightness
6 Adjustment of Video Tint
7 Adjustment of Video color satura-
tion
8 RGB tone reproduction adjust-
ment
9 VIDEO white balance adjustment
10 White balance checking and
readjustment
11 Off-timer performance
12 Thermistor performance checking 1) Heat the thermistor with a hair dryer.
13 Auto sync performance checking
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 compo-
nent 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 pattern signal.
(Signal with burst)
2) Select the following group and subject.
Group : CONFIRM/VIDEO
Subject : V-BRIGHT
1) Feed split color bar.
2) Select the following group and subject.
Group : CONFIRM/VIDEO
Subject : V-HUE
1) Select the following group and subject.
Group : CONFIRM/VIDEO
Subject : V-COLOR
1) Feed the SMPTE pattern signal.
1) Feed the 50% gray signal.
2) Select the following group and subjects.
Group : CONFIRM/VIDEO
Subject : V-R-OS
V-B-OS
1) RGB Input
sRGB Input
VIDEO Input
DTV Input
DVD Input
1) Select the following group and subjects.
Group : CONFIRM/CHECK
Subject : TEMP-OFF
1) Feed the phase check pattern signal.
4 – 2
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
1) Check the fixed value.
Fixed value : 128
1) Check the fixed value.
Fixed value : 154
1) Make sure the 100% and 95% white as well as the
0% and 5% black gradations are visible.
1) V-R-OS is 132.
V-B-OS is 132.
1) 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.
1) Make sure that the temperature is indicated.
1) In the VGA, SVGA, XGA and SXGA modes, make
sure the Clock, Phase, H-Pos and V-Pos settings
can be automatically adjusted.