ViewSonic N1900w-1E, Service Manual

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1.
General Requirements
Parameter Specification
LCD Type TFT Active Matrix Color, TN
LCD Interface 2ch-LVDS
VGA, 640x480 1440x900 pixels
Display Area 410.4 mm (H) x 256.5 mm (V), 19” Diagonal.
Pixel Pitch
0.285(H)
×
0.285(W)mm
Viewing Angle (-85~85)(H), (-80~80)(V)(Typ.) CR>10
Contrast Ratio 850:1 (Typ);500:1 (Min)
Brightness
300 cd/
㎡
(typical)/230 cd/
㎡
(min)
Response Time Tr+Tf: 5ms(typical)
Color Gamut NTSC 70% Typ
Chromaticity
(CIE1931)
White-x::0.313,White-y:0.329 (Typ) +/- 0.03
Colors 16.2M
Surface
Treatment
Anti-glare, 3H
Backlight 4 CCFLs (Cold cathode Fluorescent Lamp)
Panel
Acceptance Refer to Panel Inspection Section. Multimedia TV Engineering Functional
Specification.
Front Screen
Artifacts
VS Standard:
a.) No Visible Streaking, Sag or Smearing artifacts when driven by the
specified video cards in the primary mode and after user adjustment
b.) No image drift or lose fine-tune settings due to panel temperature change
2. Signal Interface
External
Connector
Specification
AC-In AC Jack 3-male receptacle
RGB Input
Molded-over, shielded, 15-pin subminiature D male plug with75
Ω
impedance.
Compliance with PC 99 Color Theme. Refer to Appendix B for pin layout.
DVI(PC or
HDCP) Input
digital (DVI-D) applicable.
Audio Input 3.5 Mini Jack for PC Audio or DVI (PC Timming) Audio
Audio Input
(Left) / (Right)
RCA Jack (White) / (Red) for Composite Audio or DVI (HDCP Video) Audio
Composite Video RCA Jack (Yellow)
SCART input 21 pin Connector. Refer to Appendix A
RF-IN
IEC connector with 75
Ω
load for PAL
Video Interface
Input Parameter Specification
CVBS Characteristics:
Video Amplitude Signal
DC Level Sync Pulse
0.7(min.)–1.1(max.) V
Typical. 0.35 Vp-p
Video Bandwidth PAL : 7/8 MHz Maximum
2. Specification
ViewSonic Corporation
Confidential - Do Not Copy
N1900w-1E
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