Service manual

ViewSonic Corporation Confidential - Do Not Copy VA903b-1_ VA903m-1
15
Factory Defaults
Item Defaults Item Defaults
Contrast 70% Volume
50%
(For VA903m-3 only)
Brightness 100% Balance N/A
Color Temperature 6500K Treble N/A
Sharpness 0% Bass N/A
OSD H. Position 50% 720x400/640x400 720x400
OSD V. Position 50%
640x480@60Hz
720x480@60Hz
640x480@60Hz
OSD Time Out 15 Sec
In SOG and Composite,
720x480@60Hz
640x480@60Hz
N/A
OSD Background Enabled
In SOG and Composite,
1152x864@75Hz
1152x870@75Hz
N/A
Resolution Notice Enabled
In SOG and Composite,
1280x768@60/75/85Hz
1024x768@60/75/85Hz
N/A
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