Service manual

ViewSonic Corporation Confidential - Do Not Copy VA903b-1_ VA903m-1
9
AUDIO INTERFACE (SPEAKER SPECIFICATION) (For VA903m-3 only)
Line input connection
3.5 mm stereo jack
Line input signal 1.0Vrms
Line input impedance >10 kOhm
Maximum power output (Electric)
1 W @ <15% DISTORTION
Signal to Noise Ratio 50 dB
Frequency response 200 Hz – 20 Khz
Distortion
<15% THD (@1kHz)
Vibration
There should be no audible vibration with volume at
100%. (Input signal within 1.0 Vrms)
Screen image
There should be no affect on the screen image
stability under any conditions
Connector PC99 requirement Audio in
Lime Green pantone # 577C
Cable type / length 3.5mm stereo cable / 1.8m length
Audio DPMS
NOTE: THERE IS NO GUARANTEE <1 W POWER
CONSUMPTION IN ACTIVE OFF MODE, WHEN THE
AUDIO CABLE IS CONNECTED
TFT LCD PANEL
1
st
Panel Source
HSD 190ME13-A16/A10
Type
TN, LVDS
Active Size 376.32 mm (H) x 301.056mm (V)
Pixel Arrangement RGB Vertical Stripe
Pixel Pitch 0.294 mm
Glass Treatment
ANTI GLARE (HARD COATING 3H)
# of Backlights
4 CCFL EDGE-LIGHT
Backlight Life
50,000 HOURS (MAX) / 40,000 HOURS (MIN)
Luminance –Condition: CT = 6500 K
Contrast = Max, Brightness = Max
300 CD/M2 (TYP AFTER 30 MINUTE WARM UP)
240 CD/M2 (MIN AFTER 30 MINUTE WARM UP)
Brightness Uniformity 75 % (min)
Contrast Ratio 700 :1 (Typ), 450 :1 (Min)
Color Depth Vertical) 16.2 million colors (6+2 bit panel)
Viewing Angle (Horizontal)
150 deg (Typ)@ CR>10
160 deg (Typ)@ CR>5
Viewing Angle (Vertical)
135 deg (Typ) @ CR>10
150 deg (Typ)@ CR>5
Response Time
10%-90% @ Ta=25°C
8 ms (Tr= 2 ms, Tf = 6 ms) (Typ)
12 ms (Tr= 4 ms, Tf = 8 ms) (max)
Panel Defects Please see Panel Quality Specifications.