Service manual

4. Electrical
The following table defines the electrical specification of this product.
ELECTRICAL SPECIFICATION
Power Input Voltage Range 100-240VAC +/- 10% Wide Range
Input Frequency Range
47-63 Hz
Input Current 3.0A @ 115VAC // 1.5A @ 230VAC
Power Supply Inrush
Max in < 150A (with fully loaded power supply) at
230Vac
Shall not result in permanent failure of power supply
(including blown fuse)
Power Consumption: Normal Normal:200 W (Max) // Stand by: < 3.0 W
Interference with RF and Video
There shall be no visible interference between power
supply, RF and video signals. This applies to all available
RF channels and video modes.
Electromagnetic Compatibility
This product shall adhere to the compatibility and
immunity specifications in FCC.
Power Supply Transient Immunity
(Supply Transients and Outage)
Able to withstand an ANSI / IEEE C62.41 – 1980 2000V
ring wave with no damage.
Surge Immunity Test
Able to withstand 1.25X nominal Line Voltage for one
cycle with no damage.
Power Supply Missing Cycle Immunity
Function properly without reset or visible screen artifact
when 1/3 cycle of AC Power is randomly missing.
Power Supply Acoustics
Power supply shall not produce any audible noise during
startup and normal operation. Audible shall define to be
in compliance with ISO 7779 (DIN EN27779: 1991) .
Power Switch noise shall be Excluded.
Efficiency >= 80% @ full load, nominal line
Leakage Current <0.5mA @ 240VAC
Power Saving(DPMS) N/A
Recovery Time < 3 sec.
Power Factor Correction Compliant with EN61000-3-2
5. Firmware & OSD
The product firmware of VS11
502 shall have a firmware version of 1.00 Any
changes/revisions afterward shall also be pre-approved by ViewSonic in written. For VS11405-1M,
its firmware shall have a built-in frequency table for
implementation.
All audio/video and other output adjustments shall be performed by using an On Screen Display
(OSD) via a Remote Control Unit (RCU) in conjunction with the front panel adjustments. The
following tables list the OSD functions supported by VS11
502-1M.
OSD Table for
VS11502
OSD
Brightness Adjust the Black levels
Contrast Adjust the White levels
Sharpness Adjust the Sharpness levels
Color Adjust the Color levels
Tint Adjust the Tint levels
Color Temperature Selections on Normal, Warm, user, Cold
Back Light Adjust the Back Light levels
Aspect ratio Selections the Image Size on Full, Wide1, Wide2, Wide3, 4:3, 16:9, No
scale, Normal
Language Selections English, Spanish , French
By area have some difference
OSD Timeout Set OSD disappearing time
ViewSonic Corporation Confidential - Do Not Copy N4251w-1M
5