ViewSonic VS12335-2M, Service Manual

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4.
Electrical
The following table defines the electrical specification of this product.
ELECTRICAL SPECIFICATION
1 Power Input Voltage Range 100-/- 10% Wide Range
2 Input Frequency Range 47-63 Hz
3 Input Current 1.0A @ 115VAC // 0.5A @ 230VAC
4 Power Supply Inrush
Max in < 80A (with fully loaded power supply) at 230Vac
Shall not result in permanent failure of power supply
(including blown fuse)
5 Power Consumption: 60 W (Normal), 75W (Max) // Stand by: < 2 W
6 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.
7 Electromagnetic Compatibility
This product shall adhere to the compatibility and immunity
specifications in FCC.
8
Power Supply Transient Immunity
(Supply Transients and Outage) Able to withstand an ANSI / IEEE C62.41 – 1980 2000V
ring wave with no damage.
9 Surge Immunity Test
Able to withstand 1.25X nominal Line Voltage for one cycle
with no damage.
10
Power Supply Missing Cycle
Immunity Function properly without reset or visible screen artifact
when 1/3 cycle of AC Power is randomly missing.
11 Power Supply Acoustics
The Power Supply shall not produce audible noise that would
be detectable by the user (Excluding Power Supply Fan).
“Audible” shall be defined in accordance with ISO 7779
(DIN EN27779:1991).
Power Switch noise shall be Excluded.
12 Efficiency >= 80% @ full load, nominal line
13 Leakage Current <0.5mA @ 240VAC
14 Power Saving(DPMS) N/A
15 Recovery Time < 3 sec.
16 Power Factor Correction Compliant with EN61000-3-2
5. Firmware & OSD
The product firmware of VS12335-2M shall have a firmware version of V2.00EB0. Any
changes/revisions afterward shall also be pre-approved by ViewSonic in written. For VS12335-1M,
its firmware shall have a built-in frequency table for NTSC/ATSC off-air TV/CATV, and with MTS
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 VS12335 -2M.
OSD Table for VS12335-2M
Picture Mode Standard,Dynamic,Soft,Personal
Contrast 0~50~100
Brightness 0~50~100
Sharpness 0~50~100
Tint -50~0~+50
Color 0~50~100
Color Mode
Cool, Normal, Warm
Zoom Mode Full, Movie Scale, Zoom In,4:3
PICTURE
Noise Reduction Standard, Strong, Weak, Off
ViewSonic Corporation
Confidential - Do Not Copy VTMS2431
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