ViewSonic N3250w-1L, Service Manual

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Shall not result in permanent failure of power supply
(including blown fuse)
Power Consumption: Normal Normal: 150 W (Max) // Stand by: <
3
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 VS11257-1M / VS11335-1M shall have a firmware version of
V:P01
. Any changes/revisions afterward shall also be pre-approved by ViewSonic in
written. For VS11257-1M / VS11335-1M, its firmware shall have a built-in frequency
table for NTSC/ATSC off-air TV/CATV, Closed-Caption, 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) adjustments. The following tables list
the OSD functions supported by VS11257-1M / VS11335-1M.
OSD Table for VS11257-1M / VS11335-1M
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 ,
By area have some difference
OSD Timeout Set OSD disappearing time
Memory recall Set user settings to factory preset value
Treble Adjust the Hi Frequency levels
Bass Adjust the Low Frequency levels
Balance Adjust the Spk output levels
Audio out Audio signal output On or Off
Surround Surround sound effect On or Off
Auto Scan TV program Auto Search
Tuner Mode Selections TV sources to Air or Cable
Channel Edit TV channel name edit
ViewSonic Corporation
Confidential - Do Not Copy
N3250w-1L
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