Read Sharp XG-P20XE (serv.man4) Service Manual online
30
XG-P20XU
XG-P20XE
XG-P20XD
XG-P20XE
XG-P20XD
No.
Adjusting point
Adjusting conditions
Adjusting procedure
10
RGB white
balance
balance
1. Feed the 32-step gray scale
signal (XGA 60Hz).
Group : OUTPUT 1
Subject : R1-BLK (R)
Group : OUTPUT 1
Subject : R1-BLK (R)
R1-GAIN(R)
B1-BLK (B)
B1-GAIN(B)
B1-BLK (B)
B1-GAIN(B)
»
Adjust the R1-BLK and B1-BLK data for the black
balance on the gray scale. Then adjust the R1-
GAIN and B1-GAIN data for the center-to-white
balance on the gray scale.
(Adjust to the best point.)
balance on the gray scale. Then adjust the R1-
GAIN and B1-GAIN data for the center-to-white
balance on the gray scale.
(Adjust to the best point.)
11
Horizontal
center
center
1. Feed the NTSC mono-
scope pattern signal.
2. Group : VIDEO 1
Subject : NTSC-H
»
Using the control switches or the remote controller
buttons, adjust the data to have the same
overscan.
buttons, adjust the data to have the same
overscan.
13
Video picture
adjustment
adjustment
1. Feed the split color bar sig-
nal.
Group : VIDEO 1
Subject : PICTURE
Group : VIDEO 1
Subject : PICTURE
2. Connect the oscilloscope
between pin TP1201and
GND.
GND.
»
Using the control switches or the remote controller
buttons, adjust the white to white (100%) level
difference to 2.2
buttons, adjust the white to white (100%) level
difference to 2.2
±
0.05 Vp-p.
2.2Vp-p
14
Tint
1. Feed the split color bar sig-
nal.
Group : VIDEO 1
Subject : TINT
Group : VIDEO 1
Subject : TINT
2. Connect the oscilloscope to
TP1301.
»
Using the control switches or the remote controller
buttons. Adjust the setting so that the points indi-
cated in the waveform figure are at the same level.
buttons. Adjust the setting so that the points indi-
cated in the waveform figure are at the same level.
12
Video
brightness
adjustment
brightness
adjustment
1. Feed the baseband (0 step
gray scale :0% Black to
100% White) signal.
Group : VIDEO 1
Subject : BRIGHT
100% White) signal.
Group : VIDEO 1
Subject : BRIGHT
2. Press the control switch or
the remote control’s mute
button (to set the gamma
correction to the process
setting).
button (to set the gamma
correction to the process
setting).
»
Using the control switches or the remote controller
buttons, adjust the setting until the black signal (0%)
becomes bit-less.
buttons, adjust the setting until the black signal (0%)
becomes bit-less.
SAME LEVEL
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