ViewSonic N4200w-1 VS10945-1M Service Manual page 15

I. After Step H, check Gray Patten on both Main Window and Sub Window with VGA signal. If Color Shift
exists or Gray Step Saturation is abnormal, do Step A~H again.
(2) HDTV calibration verification:
A. Timing: 720p@60Hz.
B. Pattern: SMPTE bar.
C. Connect HDTV1 ports to VG-849 or VG859
D. Press "INPUT" key to open the "Main Source Input" Menu, and then select the "HDTV1" item.
E. Press "Power" Key, then the system is soft-power-off status.
F. Press the "VOL-", "VOL+" and "MENU" key simultaneously, and press the "POWER" key to turn on the
system. At this time, the system enters the factory mode.
G. Press "MENU" key to enter the "FACTORY OSD".
H. Press "CH " key to select the "YCbCr Calibration" item in the factory OSD, and press "VOL+" key
then the Calibration will be auto adjusted.
I. After Step H, check Gray Patten on both Main Window and Sub Window with HDTV1(YPbPr) signal. If
Color Shift exists or Gray Step Saturation is abnormal, do Step A~H again.
5.4 Adjusting Procedures
5.4.1 Function Test
□Video/Audio Receiving Test
I. PC FUNCTION CHECK
- Test Equipment
Color Video Signal & Pattern (or PC with SXGA resolution and a sound card)
- Test Condition
Before function test and alignment, each LCD TV should be warmed up for at least 30 minutes with the
following conditions:
(a) In room temperature,
(b) With full-white screen, RGB, and Black
(c) With cycled display modes,
640*480 (H=43.27kHz, V=85Hz)
800*600 (H=53.7kHz, V=85Hz)
1024*768 (H=68.67kHz, V=85Hz)
1280*1024 (H=79.97kHz, V=75Hz)
ViewSonic Corporation
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