Service manual

ViewSonic Corporation Confidential - Do Not Copy Q9b-3
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(b) Then, select and enter “H. Size” or “H./V. Position” function to adjust the video
boundary to be full scanned and within screen frame.
1.5.7 White Balance
A. TIMING: 1280x1024 64KHz/60Hz.
B. PATTERN: 5 Blocks.
C. LCD MONITOR set to 1280x1024 80K/75Hz BURN IN and warm up over 30
minutes.
D. CA110 color analizer at the center of screen and along a perpendicular to the
screen at 20cm from the display.
E. Power turn off, Press
“▲” and “ ”
and turn on power at the same time after
power LED is on, release
“▲” and “ ”
key, Then press “ ” key go to
factory mode. (Fig.1)
F. Adjust Color Temperature:
(1) EEPROM INIT (5 BLOCKS):
Press “▼” key move cursor to EEPROM INIT, Press “ ” key then
monitor will INIT ADC value.
(2) Press “▲” key move cursor to “White Balance”, Press “ ” key do
white balance adjustment.
(3) Press “▼” key move cursor to “Color Temperature Adjust”, Press
“ ” key, Then OSD will display Fig.2
(4) 9300K verify: move cursor to 9300K Press “ ” key.
Press “▼”, “▲” key adjust R.G.B value
x=0.283 ± 0.02
y=0.298 ± 0.02
Press “ ”key return to Fig.2
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(Fig.1)
(Fig.2)
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