ViewSonic N4200w-1 VS10945-1M, Service Manual

Page: 14 / 85

5. Adjustment Procedure
5.1 Setup Conditions and Precautions
5.1.1 Adjustments should be undertaken only on those necessary elements since most of them have
been carefully preset at the factory.
5.1.2 ESD protection is needed before adjustment.
5.2 Main Adjustments
NO. FUNCTION DESIGNATION
1. EEPROM Initial Function Key
2. Do calibration Function Key
5.3 Alignment Procedures
Adjustment Conditions and Precautions:
(A). Power supply voltage:
AC 110/120V±10% 60 Hz±5%, AC 220/240V±10% 50 Hz±5%.
(B). Signals: reference the front detail specifications and timing table.
Video: refer to the specifications given.
(C) Do calibration before test VGA or HDTV.
5.3.1 EEPROM Initial:
A. Switch on the AC-in Power Switch (POWER S/W).
B. Make sure the system is Power on status.
C. Do “Factory Preset” under the OSD Setup menu.
D. Press the “POWER” key to turn off system.
E. Press the “POWER” key to turn on system.
5.3.2. Calibration in VGA or HDTV source Adjustment:
(1) VGA calibration verification:
A. Timing: 1280x720@60Hz.
B. Pattern: 16 gray.
C. Connect VGA port to VG-849 or VG859
D. Press “INPUT” key to open the “Main Source Input” Menu, then select “VGA” 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
T
” key to select the “Analog RGB Calibration” item in the factory OSD, and press “VOL+”
key then the Calibration will be auto adjusted.
ViewSonic Corporation Confidential - Do Not Copy N4200w-1
13