ViewSonic N1930w-2M, Service Manual

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LCD panel of this product shall be provided by “MTD” with a model number of M190MWW1-401.
The following table defines this panel specification. Any changes in panel must be pre-approved by
ViewSonic in written.
Parameter Specification
LCD Type
a-Si TFT Active Matrix Wide Color, Transmissive Mode, Normally
Black
LCD Interface 1-Channel LVDS
Resolution (Native) 1440 x 900
Display Area 19” diagonal; 410.4 mm (H) 256.5 mm (V)
Pixel Pitch 0.285 (H) x 0.285 (V) mm
Viewing Angle H = 160, V = 160 with CR ≥ 10 (Typical)
Contrast Ratio 1000:1 (Typical)
Brightness 300 nits (Typical)
Response Time 5 ms, (Typical),
Brightness Uniformity 72% (Min), measured per panel spec.
Chromaticity(CIE1931) White-x:0.313,White-y:0.329 (Standard Mode Only)
Colors 167M
(8-bits)
Surface Treatment Hard coating (3H)
Backlight 4 CCFLs (Cold cathode Fluorescent Lamp)
Preset Color Panel Default
Gray Scale 0-255
Rated Life (Backlight) > 50KHrs* (60KHrs Typical)
Front Screen Artifacts
VS Standard:
a.) No Visible Streaking, Sag or Smearing artifacts when driven by
the specified video cards (see 7.1 General Test Equipment) in
the primary mode (VGA & 60 Hz) and after user adjustment
b.) No image drift or lose fine-tune settings due to panel
temperature change.
Panel Acceptance Spec
Refer to the panel acceptance criteria specification.
Note: Intermittent and/or Display Pattern defects which result in
further bright or dark dots will be counted individually against the
above specification.
Note: Also refer to the panel defect acceptance specification.
Panel performance characteristics “ MUST BE” met in all display modes/inputs at standard test
conditions.
1. RF Tuner
RF tuner of this product shall be provided by “Samsung DTVS205CH201A” for NTSC/ATSC. The
following table defines this tuner specification.
Parameter Specification
RF Tuning Range
NTSC/ATSC: 55.25 to 803 MHz, 2-69 Channels for Off-Air and
1-125 Channels for CATV
RF Tuner Sensitivity (S/N
Ratio at un-weight)
44 dB (min.)
Channel Bandwidth NTSC/ATSC/Digital Cable: 6 MHz Maximum
CVBS Characteristics:
Video Amplitude Signal
0.8(min.)–1.2(max.) V
Audio Characteristics:
SIF out level 500mV (typ.)
Compatible system TUNER NTSC/ATSC/QAM
Compatible system AV NTSC M
2. Specification
ViewSonic Corporation
Confidential - Do Not Copy
N1930w-2M
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