ViewSonic Vt2756-l Manual

							IMPORTANT:  Please read this User Guide to obtain important information on installing 
and using your product in a safe manner, as well as registering your product for future 
service. Warranty information contained in this User Guide will describe your limited 
coverage from ViewSonic Corporation, which is also found on our web site at http://
www.viewsonic.com  in  English,  or  in  specific  languages  using  the  Regional  selection 
box in the upper right corner of our website. “Antes de operar su equipo lea cu 
idadosamente las instrucciones en este manual”
VT2756-L/VT2406-L
Professional LCD TV display
User Guide
Model No. VS15628/VS15627 
						

							Contents
Compliance Information ..............................................................................\
............ i
Declaration of RoHS2 Compliance  ......................................................................... ii
Copyright Information  .............................................................................\
................ iii
Product Registration  .............................................................................\
.................. iii
Important Safety Instructions ..............................................................................\
... iv
Getting Started ...................................................................1
Package Contents ..............................................................................\
...................... 1
Installing the LCD TV  ..............................................................................\
................. 2
Installing the Stand  ............................................................................................. 2
Disconnecting the Stand  .................................................................................... 2
Mounting ViewSonic LCD TV to the wall ............................................................ 3
Wall Mount Kit Specifications (VESA)  ................................................................ 4
Front View of the Product  .............................................................................\
.......... 5
Rear View of the Product  .............................................................................\
........... 6
Connecting the LCD TV  ..............................................................................\
............. 7
Cable System or VHF/UHF Antenna System ..................................................... 7
Cable System and VHF/UHF Antenna System .................................................. 7
HD Cable Box/HD Satellite Box  ......................................................................... 7
Personal Computer  ............................................................................................ 10
Using the TV Features....................................................... 11
Remote Control and TV Controls ........................................................................... 11
Inserting Remote Control Batteries  .................................................................... 11
Remote Control and TV Controls ....................................................................... 11
Operation  ..............................................................................\
.................................... 14
Other Information .............................................................. 31
Troubleshooting ..............................................................................\
......................... 31
Specifications ..............................................................................\
............................. 33
RS232 Protocol  .............................................................................\
........................... 34
Customer Support .............................................................................\
...................... 43
Limited Warranty  ..............................................................................\
........................ 44
Mexico Limited Warranty  .............................................................................\
........... 45  
						

							i
FCC Statement
This device complies with part 15 of FCC Rules. Operation is subject to \
the following two conditions: 
(1) this device may not cause harmful interference, and (2) this device must accept any interference 
received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a\
 Class B digital device, 
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection 
against harmful interference in a residential installation. This equipment generates, uses, and can 
radiate radio frequency energy, and if not installed and used in accordance with the instructions, 
may cause harmful interference to radio communications. However, there is no guarantee 
that interference will not occur in a particular installation. If this e\
quipment does cause harmful 
interference to radio or television reception, which can be determined b\
y turning the equipment off 
and on, the user is encouraged to try to correct the interference by one\
 or more of the following 
measures:
• 
Reorient or relocate the receiving antenna.
•  Increase the separation between the equipment and receiver.
•  Connect the equipment into an outlet on a circuit different from that to which the receiver is 
connected.
•  Consult the dealer or an experienced radio/TV technician for help.
Warning: You are cautioned that changes or modifications not expressly approved by the party 
responsible for compliance could void your authority to operate the equi\
pment.
Following information is only for EU-member states:
The mark shown to the right is in compliance with the Waste Electrical and Electronic 
Equipment Directive 2002/96/EC (WEEE).
The mark indicates the requirement NOT to dispose the equipment as unsorted municipal 
waste, but use the return and collection systems according to local law.
If the batteries, accumulators and button cells included with this equip\
ment, display the 
chemical symbol Hg, Cd, or Pb, then it means that the battery has a heav\
y metal content of 
more than 0.0005% Mercury or more than, 0.002% Cadmium, or more than 0.0\
04% Lead.
 ENERGY STAR Information:
• ENERGY STAR is a set of power-saving guidelines issued by the U.S. Environmental Protection 
Agency (EPA).
ENERGY STAR is a joint program of the U.S. Environmental Protection Agency and the U.S. 
Department of Energy helping us all save money and protect the environme\
nt through energy 
efficient products and practices.
The power consumption will be changed, if the TV set up to be another mode except for default as-
shipped television configuration and settings.
The power consumption may exceed energy consumption beyond the limits re\
quired for ENERGY 
STAR qualification when the optional function used or the operation mode changed in use.
Dolby Trademark Information:
 Manufactured under license from Dolby Laboratories. Dolby and the double-D symbol 
are trademarks of Dolby Laboratories.
Compliance Information  
						

							ii
Declaration of RoHS2 Compliance
This product has been designed and manufactured in compliance with Direc\
tive 2011/65/EU of the 
European Parliament and the Council on restriction of the use of certain\
 hazardous substances in 
electrical and electronic equipment (RoHS2 Directive) and is deemed to comply with the maximum 
concentration values issued by the European Technical Adaptation Committee (TAC) as shown 
below:
SubstanceProposed Maximum 
Concentration Actual Concentration
Lead (Pb) 0.1%< 0.1%
Mercury (Hg) 0.1%< 0.1%
Cadmium (Cd) 0.01%< 0.01%
Hexavalent Chromium (Cr
6+) 0.1% < 0.1%
Polybrominated biphenyls (PBB) 0.1%< 0.1%
Polybrominated diphenyl ethers 
(PBDE) 0.1%
< 0.1%
Certain components of products as stated above are exempted under the Annex III of the RoHS2 
Directives as noted below:
Examples of exempted components are:
1.  Mercury in cold cathode fluorescent lamps and external electrode fluorescent lamps (CCFL  and 
EEFL) for special purposes not exceeding (per lamp):
(1) Short length (≦500 mm): maximum 3.5 mg per lamp.
(2) Medium length ( ＞500 mm and ≦1,500 mm): maximum 5 mg per lamp.
(3) Long length ( ＞1,500 mm): maximum 13 mg per lamp.
2.  Lead in glass of cathode ray tubes.
3.  Lead in glass of fluorescent tubes not exceeding 0.2% by weight.
4.  Lead as an alloying element in aluminium containing up to 0.4% lead by w\
eight.
5.  Copper alloy containing up to 4% lead by weight.
6.  Lead in high melting temperature type solders (i.e. lead-based alloys containing 85% by weight 
or more lead).
7.  Electrical and electronic components containing lead in a glass or ceram\
ic other than dielectric 
ceramic in capacitors, e.g. piezoelectronic devices, or in a glass or ce\
ramic matrix compound.  
						

							iii
Copyright Information
Copyright © ViewSonic® Corporation, 2014. All rights reserved.
ViewSonic, the three birds logo, OnView, ViewMatch, and ViewMeter are registered trademarks of 
ViewSonic Corporation.
Disclaimer: ViewSonic Corporation shall not be liable for technical or editorial erro\
rs or omissions 
contained herein; nor for incidental or consequential damages resulting \
from furnishing this material, 
or the performance or use of this product.
In the interest of continuing product improvement, ViewSonic Corporation reserves the right to 
change product specifications without notice. Information in this document may change without 
notice.
No part of this document may be copied, reproduced, or transmitted by an\
y means, for any purpose 
without prior written permission from ViewSonic Corporation.
Product Registration
To meet your future needs, and to receive any additional product informat\
ion as it becomes 
available, please register your product on the Internet at: www.viewsonic.com.
For Your Records
Product Name: VT2756-L/VT2406-L
ViewSonic LCD TV
Model Number: VS15628/VS15627
Document Number: VT2756-L/VT2406-L_UG_ENG Rev. 1D 06-30-14
Serial Number: _________________________________
Purchase Date: _________________________________
Product disposal at end of product life
ViewSonic respects the environment and is committed to working and living\
 green. Thank you for 
being part of Smarter, Greener Computing. Please visit ViewSonic website to learn more.
USA & Canada: http://www.viewsonic.com/company/green/recycle-program/
Europe: http://www.viewsoniceurope.com/uk/support/recycling-information/
Taiwan: http://recycle.epa.gov.tw/recycle/index2.aspx  
						

							iv
Important Safety Instructions
Dangerous Voltage: The lightning flash with 
arrowhead symbol, within an equilateral triangle, 
is intended to alert the user to the presence 
of dangerous voltage within the inside of the 
product that may be sufficient level to constitute 
a risk of electric shock to persons.
Instruction: The exclamation point within 
an equilateral triangle is intended to alert the 
user to the presence of important operating 
and servicing instructions in the literature 
accompanying the appliance.
1.   Read these instructions completely before using the 
equipment.
2.   Keep these instructions in a safe place.
3.   Heed all warnings.
4.   Follow all instructions.
5.   Do not use this apparatus near water.
6.   Clean with a soft, dry cloth.
7.   Do not block any ventilation openings. Install the 
equipment in accordance with the manufacturer’s 
instructions.
8.   Do not install near any heat sources such 
as radiators, heat registers, stoves, or other 
devices (including amplifiers) that produce 
heat.
9.   Do not attempt to circumvent the safety 
provisions of the polarized or grounding-type plug. A 
polarized plug has two blades with one wider than the 
other. A grounding type plug has two blades and a third 
grounding prong. The wide blade and the third prong are 
provided for your safety. If the provided plug does not fit 
into your outlet, consult an electrician for replacement of 
the outlet.
10.   Prevent the power cord from being tread upon or 
pinched, particularly at the plug, convenience 
receptacles, and the point where they exit from the 
device. Be sure that the power outlet is located near the 
equipment so that it is easily accessible.
11.   Only use attachments/ accessories specified 
by the manufacturer.
12.   Use only with the cart, stand, tripod, bracket, 
or table specified by the manufacturer, or 
sold with the apparatus. When a cart is used, 
use caution when moving the cart/ apparatus 
combination to avoid injury from tip-over.
13.   Unplug this apparatus when it will be unused for a long 
period of time.
14.   Refer all servicing to qualified service personnel. 
Servicing is required when the apparatus has been 
damaged in any way, such as power-supply cord or plug 
is damaged, liquid has been spilled or objects have fallen 
into the apparatus, the apparatus has been exposed to 
rain or moisture, or the unit does not operate normally, or 
has been dropped.
USE
AC power Cord
Keep the following guidelines to protect the AC power cord 
from being damaged. If the AC power cord is damaged, it 
may result in a fire or an electric shock. Stop using it and ask 
your dealer or ViewSonic service center to exchange it.
• Do not place the TV where the power cord is subject to 
wear or abuse.
•  Do not pinch, bend, or twist the cord excessively.
•  The core lines may be bared and cut, causing a short-
circuit, and resulting in a fire or an electric shock.
•  Do not convert or damage the power 
cord.
•  Avoid power cord being rolled over or 
rested upon.
•  When the power cord is plugged in, do 
not move the TV.
•  Keep the power cord away from heat sources.
•  When you disconnect the AC power cord, disconnect it 
from the wall outlet first.
•  When disconnecting the power cord, grasp the plug instead 
of pulling the power cord.
•  Use only an original ViewSonic AC power cord, not other 
brands.
•  Do not use the supplied AC power cord on any other 
equipment.
Wall outlet
Insert the plug fully into the outlet. If it is loose, 
do not use it. Doing so may cause arcing and 
result in a fire. Contact your electrician to 
change the outlet.
Wiring
For your safety, be sure to unplug the AC 
power cord when connecting cables.
Take care not to trip on the cables. It may cause damage to 
the TV set.
Electric shock
Do not touch the AC power cord or the TV with 
a wet hand. If you plug/unplug the AC power 
cord from the TV with a wet hand, it may 
cause electric shock.
Lightning storms
During a lightning storm, unplug the TV from the wall outlet 
and disconnect the antenna to prevent damage to the TV.
When not in use
If you will not be using the TV set for long periods of time, 
the TV set should be disconnected from the AC power outlet 
to prevent power line surges. The TV set is not disconnected 
from the AC power source when the TV set is switched off.
To disconnect the TV set completely, unplug from the AC 
power outlet.
Overloading
This TV set is designed to operate on a 120V 
AC supply only.  
If there are too many appliances connected to 
the same AC power outlet, it could result in a 
fire or an electric shock.  
						

							v
Optional equipment
If optional equipment is to be installed, leave some space 
between optional equipment and the TV set. Picture 
distortion and/or noisy sound may occur if the TV set is 
positioned in close proximity to any equipment emitting 
electromagnetic radiation.
Small accessories
Keep small accessories in a safe place where children are 
unable to reach.
Magnetic influence
This TV contains a strong magnet in the speaker unit that 
generates a magnetic field. Keep any items susceptible to 
magnetic fields away from the speaker.
Sound
If you hear snapping or popping sound comes 
from the TV continuously or frequently while 
the TV is operating, unplug the TV and consult 
your dealer or service technician. It is normal 
for some TVs to make occasional snapping or 
popping sounds, particularly when being turned 
on or off.
Use in outdoor
This TV is not designed for outdoors 
installation. Do not expose the TV to rain, 
as it may result in a fire or an electric 
shock. Also, do not expose the TV to direct 
sunlight, as it may heat up and become 
damaged.
Vehicle, ships and other vessels
Do not install this TV in a vehicle.
Car accidents may cause the TV to fall down 
and cause injury.
Do not install this TV in a ship or vessel.
If the TV is exposed to seawater, it may cause 
a fire or damage the TV.
Medical institutions
Do not place this TV in a place where medical equipment is 
in use. It may cause the medical equipment to malfunction.
Volume adjustment
• Adjust the volume to avoid disturbing your neighbors.  
Sound carries easily at night. Therefore, we suggest you 
close the windows or use headphones.
•  When using headphones, adjust the volume to appropriate 
levels, or hearing damage may result.
ANTENNAS
Outdoor antenna grounding
If an outdoor antenna is installed, follow the precautions 
below.
Do not install the outdoor antenna system near of overhead 
power lines or other electric light or power circuits, or where 
it can come in contact with such power lines or circuits.
WHEN INSTALLING AN OUTDOOR ANTENNA SYSTEM, 
EXTREME CARE SHOULD BE TAKEN TO KEEP FROM 
CONTACTING SUCH POWER LINES OR CIRCUITS AS 
CONTACT WITH THEM IS ALMOST INVARIABLY FATAL.
Be sure the antenna system is grounded so that it can 
provide some protection against voltage surges and built-up 
static charges.
Section 810 of the National Electrical Code (NEC) in the 
U.S.A. and Section 54 of the Canadian Electrical Code 
in Canada provides information with in regard to proper 
grounding of the mast and supporting structure, grounding 
of the lead-in wire to an antenna discharge unit, size of 
grounding conductors, location of antenna discharge unit, 
connection to grounding electrodes, and requirements for the 
grounding electrode.
Antenna grounding according to the National Electrical 
Code, ANS/NFPAFPA 70
Antenna
Antenna discharge
unit
Grounding conductors
Power service grounding 
electrode system 
Ground clamps Electric service 
equipmentGround clamp
CLEANING
Cleaning the AC power plug
Unplug the AC power plug and clean it 
regularly. If the plug is covered with dust 
and gathers moisture, its insulation may 
deteriorate and result in a fire.
Cleaning the screen surface/ cabinet of the TV set
When cleaning this TV, unplug the AC 
power cord. If not, it may result in electric 
shock. Use a dry soft cloth to clean the 
cabinet of the TV. To remove dust near 
the screen, wipe it gently with a soft cloth. 
Stubborn stains may be
removed with a cloth slightly dampened with a solution of 
mild soap and warm water. Never use strong solvents such 
as thinner or benzine for cleaning. If using a chemically 
pretreated cloth, please follow the instruction provided on 
the package. The ventilation holes can accumulate dust over 
time.
To ensure proper ventilation, we recommend you to remove 
the dust periodically (once a month) using a vacuum cleaner, 
while the LCD TV is powered off.
Disclaimer
Some chemical cleaners have been reported to damage the 
screen and/or case of the LCD TV. ViewSonic will not be 
liable for damage resulting from use of these cleaners.
CARRYING THE TV
Carry the TV as instructed
To prevent dropping the TV and causing serious injury, you 
must follow these guidelines:
• 
Disconnect all cables before carrying the TV.
•  Carrying the large size TV requires at least two or three 
people.
•  When you carry the TV, place your hands as illustrated and 
hold it securely. Do not put stress on the LCD panel and 
the frame around the screen.
•  When carrying the TV, do not subject it to shocks, vibration, 
or excessive force.  
						

							vi
• When lifting or moving the TV, hold it securely from the 
bottom. Place your palm directly under the panel.
VENTILATION
Slots and openings in TV are provided for 
ventilation.
To ensure reliable operation of the TV and 
to protect it from overheating, be sure these 
openings are not blocked or covered.
The TV may accumulate dust and get dirty if 
proper ventilation is not provided. For proper 
ventilation, follow the following guidelines:
• Never install the TV face up, down or 
sideways.
•  Never install the TV turned over or upside 
down.
•  Never cover the slots and openings with a 
cloth or other materials.
•  Never block the slots and openings by 
placing the TV on a bed, sofa, rug or other 
similar surface.
•  Never place the TV in a confined space, such as a 
bookcase or built-in cabinet, unless proper ventilation is 
provided.
Leave some space around the TV set as shown below. 
Otherwise, air-circulation may be inadequate and cause 
overheating, which may cause a fire or damage to the TV 
set.
Installed on the wall
Installed with stand
4 inches
(10 cm)4 inches
(10 cm)2.375 inches(6.03 cm)
11 .875 inches
(30.16 cm)
4 inches
(10 cm)
4 inches
(10 cm)4 inches
(10 cm)
11.875 inches
(30.16 cm)
  Leave at least this space around the set.
Do not install the TV set as follows:
Air circulation is blocked.  Air circulation is blocked.
Objects and ventilation holes
Never push any objects into the slots on the TV cabinet as 
they may touch dangerous voltage points or short out parts 
that could result in a fire or an electric shock. Do not place 
any objects on the TV.
MOISTURE
Moisture and flammable objects
• Keep the product away from moisture. Do not 
expose this appliance to rain or moisture. Do 
not place objects filled with liquids, such as 
vases, on the TV.
•  Do not use power-line operated TV sets 
near water, such as in places like a bathtub, 
washbowl, kitchen sink, laundry tub, a wet 
basement, or near a swimming pool, etc. It 
may cause fire or electric shock.
•  Do not let this TV get wet. Never spill liquid 
of any kind on the TV. If water penetrates 
into the product, unplug the power cord and 
contact ViewSonic.
•  Do not operate the TV when wet. It may result in electric 
shock or damage to the TV.
•  To prevent fire, keep flammable objects or open flame (e.g. 
candles) away from the TV.
INSTALLATION
Optional wall mount
To do Wall mount installation, you need a Wall-Mount 
Bracket. When installing or removing the TV using the Wall-
Mount Bracket, be sure to use qualified contractors. If not 
properly secured during installation or removal from the Wall-
Mount Bracket, the TV may fall and cause serious injury.
• When installing the TV using a Wall-Mount Bracket, make 
sure you follow the operating instructions supplied with the 
Wall-Mount Bracket.
•  Attach the brackets supplied with the Wall-Mount Bracket.
•  The TV is not designed for hanging from the ceiling. It may 
fall and cause serious injury.
Placement
The TV should be installed near an easily accessible AC 
power outlet.
Observe the following to prevent the TV from 
falling from the stand or wall mount.
•  Place the TV on a stable, level surface.
•  Do not hang anythin g on the TV. Do not allow 
children to climb on the  T V.
 Do not install the 
TV in places subject to extreme temperature, such as in 
direct sunlight, near a radiator, or heating vent. If the TV is   
						

							vii
exposed to extreme temperature, the TV may overheat and 
cause deformation of the enclosure or cause malfunction.
•  Do not install the TV in a place exposed to direct air 
conditioning.
•  If the TV is installed in such a location, 
moisture may condense inside and may 
cause a malfunction.
•  Do not place the TV in hot, oily, humid or 
excessively dusty places.
•  Do not install the TV where insects may enter.
•  Do not install the TV where it may be exposed to 
mechanical vibration.
•  Do not install the TV in a location where it may spear up, 
such as on or behind a pillar, or where you might bump 
your head on it. It may cause injury.
Preventing the TV from toppling over
To prevent the TV from toppling over, secure the TV to a wall 
or stand.
Placement for watching
We suggest you to watch the TV at a distance of 3-7 times 
that of the screen height, and not in excessive brightness. 
It is easy to cause eye fatigue if you watch TV for too long 
or in a dark room. To obtain clear picture, do not expose the 
screen to direct illumination or sunlight. Use spot lighting 
directed down from the ceiling if you can.
LCD SCREEN
•  Although the LCD screen is made with high precision 
technology and has effective pixels of 99.99% or more, 
black dots or bright points or light (red, blue, or green) may 
appear constantly on the LCD screen. This is a structural 
property of the LCD panel and is not a malfunction.
•  The LCD screen is made with high-precision technology. 
To  achieve a high level of performance and picture 
quality, this TV’s backlight setting is set to maximize 
the brightness of the TV. However, uneven brightness 
may be observed when the LCD TV is viewed in a dark 
environment without an input source or a blank screen. 
This is a normal condition, not a malfunction of the TV. To 
improve this condition, change the Picture mode, Backlight 
setting, enable the Light Sensor, or turn on the Power 
management.
•  Avoid exposing the LCD screen surface to direct sunlight. It 
is likely to damage the LCD panel.
•  Do not push or scratch the LCD screen, or place objects on 
top of the TV. The image may be uneven or the LCD panel 
may be damaged.
•  If the TV is used in a cold place, a smear may occur in the 
picture or the picture may become dark. It is not caused 
by a failure. This condition will improve as the temperature 
rises.
•  When still pictures are displayed continuously, ghosting 
may occur. It should disappear after a short period of time.
•  The screen and cabinet get warm when the TV is in use. 
This is a normal condition.
•  Spraying insect repellent with volatile material on the 
screen will cause damage.
•  Do not make prolonged contact with rubber or plastic 
material.
Broken pieces
Do not throw anything at the TV.
Doing so may break the screen glass and 
cause serious injury.
If the surface of the TV cracks, unplug the AC 
power cord before touching the TV. Otherwise 
electric shock may result.
Handling of broken glass and liquid  crystal leakage
If the LCD panel gets damaged, crystalline liquid leakage 
may occur, or scattered broken glass may result. Do not 
touch broken glass or crystalline liquid which is toxic, with 
bare hands as cuts, poisoning or skin irritation may occur. 
Also do not glass fragments or leaked crystalline liquid get 
into your eyes or mouth. Should either contacted your eyes 
or mouth, rinse the contacted area thoroughly with water and 
consult your doctor.
SERVICING
Do not attempt to repair the TV yourself, 
since opening the cabinet may expose you 
to dangerous voltage or other hazards. 
Ask qualified service personnel to do the 
servicing for your TV.
Replacement parts
When replacement parts are required, be sure the 
service technician certifies in writing that he/she has used 
replacement parts specified by the manufacturer that have 
the same characteristics as the original parts. Unauthorized 
substitutions may cause a fire, an electric shock or other 
hazards.
Safety check
Upon completion of repairs to the TV, ask the service 
technician to perform routine safety checks (as specified 
by the manufacturer) to determine that the TV is safe for 
operating, and to so certify.
Ask a qualified service technician to dispose of the TV.  
						

							1
Package Contents
Please make sure the following items are included with your LCD TV.
If any items are missing, please contact your dealer.
or
LCD TVStand /Screw x 4pcs / 
screw driver Remote Control with batteries
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ViewSonic CD 
(User Guide) ViewSonic Quick Start Guide
Power Cord 
(for US model)
The photos of the accessories are for reference only, the color of the remote control, the type 
of power cord are variable based on the actual models.
Getting Started