Viewsonic LS740HD User manual

LS740HD

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

ViewSonic User Guide Database

Package Contents

Number Description

1 Projector

2 Remote Control

3 Batteries

4 Quick Start Guide

5 Power Cord

6 Power Adapter

Projector Overview

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Number Description

1 Keypad

2 Focus Ring

3 Zoom Ring

4 Front IR

5 Top IR

6 DC IN

7 Lens

8 I/O Ports

9 Vent (inlet)

10 Vent (outlet)

NOTE: Do not block projector intake and exhaust vents.

I/O Ports

Number Port Description

1 DC IN DC IN socket

2 AUDIO OUT Audio signal output socket

USB (5V/1.5A

3

Out)

(Service)

USB Type A port for power and
service

1. Supports HDCP 1.4.

Keypad

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4 RS-232 RS-232 control port

5

HDMI 1

[1]

[1]

2

/ HDMI

HDMI port

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Icon Button Description

Power

Keystone

Navigation

Menu/Exit

Source Displays the input source selection bar.

Information Displays the INFORMATION menu.

Enter

Auto

Toggles the projector between standby mode
and Power On.

Manually corrects distorted images resulting
from an angled projection.

Selects the desired menu items and makes
adjustments when the On-Screen Display
(OSD) Menu is activated.

Turns on or off the On-Screen Display (OSD)
Menu.

Enacts the selected On-Screen Display
(OSD) Menu item when the OSD Menu is
activated.

Automatically determines the best picture
timings for the displayed image.

Indicator Lights

Indicator

Light

Light Source indicator light

Temperature indicator light

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Description

Power indicator light

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Overview

Remote Control

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Number Button Description

1 AV Mute

2 Power Turns the projector On or Off.

3 Auto Sync

4 Source Displays the input source selection bar.

5

6 Enter Confirms the selection.

7 Menu/Exit

8 Brightness

9 Volume Up Increase the volume level.

Navigation

Buttons

Hides the screen picture and volume
mute.

Automatically determines the best
picture timings for the displayed image.

Navigates and selects the desired
menu items and make adjustments.

▪ Turns the On-Screen Display

(OSD) Menu On or Off.

▪ Go back to a previous OSD Menu.
▪ Exit and Save menu settings.

Displays the brightness mode selection
bar.

10 Keystone Manually correct distorted images.

11 Volume Down Decrease the volume level.

12 Video Unsupported Button

13 VGA Unsupported Button

14 HDMI

15 Aspect Displays the aspect ratio selection bar.

16 Page Up Unsupported Button

17 Zoom In Increases the projected image size.

18 Freeze Freeze the projected image.

19 Zoom Out Reduces the projected image size.

20 Page Down Unsupported Button

21 Display Mode Displays the color mode selection bar.

22 Mouse Mode Unsupported Button

Selects the HDMI 1 or HDMI 2 input
source.

23 Mute Mute/Unmute.

Remote Control - Receiver Range

To ensure proper function of the remote control follow the steps below:

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LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

1. The remote control must be held at an angle
within 30° perpendicular to the projector’s IR
remote control sensor(s).

2. The distance between the remote control and
the sensor(s) should not exceed 8 m (26 ft.).

NOTE: Refer to the illustration for the
location of the infrared (IR) remote
control sensor(s).

Replacing the Batteries

1. Remove the battery cover from the bottom of
the remote control by pressing the finger grip and sliding it across.

2. Remove any existing batteries (if necessary) and install two AAA batteries.

IR Receiver Location

NOTE: Observe the battery’s polarities as indicated.

3. Replace the battery cover by aligning it with the base and pushing it back into position.

NOTE:

▪ Avoid leaving the remote control and batteries in excessive heat or a humid

environment.

▪ Replace only with the same or equivalent type recommended by the battery

manufacturer.

Choosing a Location - Projector Orientation

Personal preference and room layout will decide the installation location. Consider the following:

▪ Size and position of your screen.
▪ Location of a suitable power outlet.
▪ Location and distance between the projector and other equipment.

The projector is designed to be installed in one of the following locations:

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▪ If the battery is drained or if you will not be using the remote control for an extended

period of time, remove the battery to avoid damage to the remote control.

▪ Dispose of used batteries according to the manufacturer’s instructions and local

environment regulations for your region.

16:9 Image on a 16:9 Screen

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Desk Front

Desk Rear

Location Description

Desk Front

Ceiling

Front

Desk

[1]

Rear

Ceiling

[1]

Rear

The projector is placed near the floor in front of the

screen.

The projector is suspended upside-down from the

ceiling in front of the screen.

The projector is placed near the floor behind the

screen.

The projector is suspended upside-down from the

ceiling behind the screen.

Ceiling Front

Ceiling Rear

1. A rear projection screen is required.

Projection Dimensions

NOTE: (e) = Screen | (f) = Center of Lens

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16:9 Image on a 4:3 Screen

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(a) Screen

Size

in. mm in. mm in. mm in. mm in. mm

30 762 29.55 750 38.44 976 14.71 374 2.35 60

40 1016 39.40 1001 51.25 1302 19.61 498 3.14 80

50 1270 49.24 1251 64.06 1627 24.51 623 3.92 100

60 1524 59.09 1501 76.87 1953 29.42 747 4.71 120

70 1778 68.94 1751 89.69 2278 34.32 872 5.49 139

80 2032 78.79 2001 102.50 2603 39.22 996 6.28 159

90 2286 88.64 2251 115.31 2929 44.12 1121 7.06 179

100 2540 98.49 2502 128.12 3254 49.03 1245 7.84 199

110 2794 108.34 2752 140.93 3580 53.93 1370 8.63 219

120 3048 118.19 3002 153.75 3905 58.83 1494 9.41 239

130 3302 128.03 3252 166.56 4231 63.73 1619 10.20 259

(b) Projection Distance

min. max.

(c) Image

Height

(d) Vertical

Offset

140 3556 137.88 3502 179.37 4556 68.64 1743 10.98 279

150 3810 147.73 3752 192.18 4881 73.54 1868 11.77 299

200 5080 196.98 5003 256.24 6509 98.05 2491 15.69 398

250 6350 246.22 6254 320.30 8136 122.57 3113 19.61 498

300 7620 295.46 7505 384.36 9763 147.08 3736 23.53 598

NOTE:

▪ These figures are for reference purposes only. Please refer to the actual projector for the

precise dimensions.

▪ It is recommended that if you intend to permanently install the projector to physically test

the projection size and distance using the actual projector before you permanently install
it.

NOTE: (e) = Screen | (f) = Center of Lens

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(a) Screen

Size

in. mm in. mm in. mm in. mm in. mm

30 762 27.12 689 35.28 896 13.50 343 2.16 55

40 1016 36.16 918 47.04 1195 18.00 457 2.88 73

50 1270 45.20 1148 58.80 1494 22.50 572 3.60 91

60 1524 54.24 1378 70.56 1792 27.00 686 4.32 110

70 1778 63.28 1607 82.32 2091 31.50 800 5.04 128

80 2032 72.32 1837 94.08 2390 36.00 914 5.76 146

90 2286 81.36 2067 105.84 2688 40.50 1029 6.48 165

100 2540 90.40 2296 117.60 2987 45.00 1143 7.20 183

110 2794 99.44 2526 129.36 3286 49.50 1257 7.92 201

120 3048 108.48 2755 141.12 3584 54.00 1372 8.64 219

130 3302 117.52 2985 152.88 3883 58.50 1486 9.36 238

(b) Projection Distance

min. max.

(c) Image

Height

(d) Vertical

Offset

140 3556 126.56 3215 164.64 4182 63.00 1600 10.08 256

150 3810 135.60 3444 176.40 4481 67.50 1715 10.80 274

200 5080 180.80 4592 235.20 5974 90.00 2286 14.40 366

250 6350 226.00 5740 294.00 7468 112.50 2858 18.00 457

300 7620 271.20 6888 352.80 8961 135.00 3429 21.60 549

NOTE:

▪ These figures are for reference purposes only. Please refer to the actual projector for the

precise dimensions.

▪ It is recommended that if you intend to permanently install the projector to physically test

the projection size and distance using the actual projector before you permanently install
it.

Mounting the Projector

NOTE: If you buy a third party mount, please use the correct screw size. Screw

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size can vary depending on the thickness of the mounting plate.

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

1. To ensure the most secure installation, please use a ViewSonic® wall or ceiling mount.

2. Ensure the screws used to attach the mount to the projector meet the following specifications:

▪ Screw type: M4 x 8
▪ Maximum Screw Length: 8 mm

CAUTION

▪ Avoid installing the projector near a heat source or air

conditioner.

▪ Keep at least a 10 cm (3.9 in.) gap between the ceiling

and the bottom of the projector.

Using the Security Bar

To help prevent the projector from being stolen, use a security slot locking device to secure the
projector to a fixed object.

Connecting to Power

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HDMI Connection

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

1. Connect the power cord to the power adapter.

2. Connect the power adapter to the DC IN jack at

the rear of the projector.

3. Plug the power cord into a power outlet.

NOTE: When installing the projector, incorporate a readily accessible disconnect
device in the fixed wiring, or connect the power plug to an easily accessible outlet
near the unit. If a fault should occur during operation of the projector, use the
disconnect device to switch off the power supply, or disconnect the power plug.

Connecting to External Devices

Connect one end of an HDMI cable to the HDMI port of your video device. Then connect the other
end of the cable to the HDMI 1/2 port of your projector.

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Audio Connection

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

To play audio from the projector through an external speaker, connect one end of an audio cable to
the external speaker, and the other end to the projector’s AUDIO OUT port.

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USB Connection

RS-232 Connection

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USB Type A Connection

The USB port is for supplying power (e.g., dongles) and service needs.

NOTE: The USB port does not supply power when the projector is in standby
mode.

When you use a RS-232 serial port cable to connect the projector to an external computer certain
functions can be controlled remotely by the PC, including Power On/Off, Volume adjustment,

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LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Input select, Brightness, and more.

Starting the Projector

1. Ensure the projector’s power cord is properly connected to a

2. Press the Power button on the projector or remote control to

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power outlet.

turn on the projector.

NOTE:

▪ The Power Indicator Light will be flashing blue during

startup.

▪ The first time the projector is turned on, you will be

prompted to select the preferred language, projection
orientation, and other settings.

Adjusting the Projector’s Height and Projection Angle

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Selecting an Input Source

The projector can be connected to multiple devices at the same time. However, it can only display
one full screen at a time.

When Auto Source is On, the projector will automatically search for input sources. If multiple
sources are connected, press the Source button on the projector or remote control to select the
desired input.

NOTE: Ensure the connected sources are also turned on.

Adjusting the Projected Image

The projector is equipped with three (3) adjustment feet. Adjusting the feet will change the
projector’s height and the vertical projection angle.

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Adjusting the Focus, Keystone, and Zoom

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You can improve and adjust the clarity and position of the image by adjusting the Focus Ring,
Keystone Keys, or Zoom Ring.

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Shutting Down the Projector

1. Press the Power button on the projector or remote control and a “power off message” will
appear.

2. Press the Power button again to confirm and shut down the projector.

3. The Power Indicator Light will turn solid red and enter standby mode.

On-Screen Display (OSD) Menu

The projector has multilingual on-screen display menus that allow you to make image adjustments
and change a variety of settings.

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Menu Description

Display

Audio Adjust the volume level or mute.

Setup

Information View projector information.

Adjust Image, 3D, Aspect Ratio, Zoom,
and Keystone settings.

Adjust Projection, Power, Security,
Language, Input Source, etc. settings.

Menu Navigation

The projector has multilingual on-screen display menus that allow for image and settings
adjustment.

1. To open the On-Screen Display (OSD) Menu, press the Menu/Exit button on the projector or
the remote control.

2. When the OSD is displayed, use the Navigation buttons to select any item in the main menu.
While making a selection on a particular page, press the Enter button on the projector or the
remote control to enter a sub-menu.

3. Use the Navigation buttons to select the desired item in the sub-menu and then press Enter

4. Select the next item to be adjusted in the sub-menu and adjust as described above.

5. Press Enter to confirm, and the screen will return to the main menu.

6. To exit, press the Menu/Exit button again. The OSD menu will close and the projector will

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to view further settings. Adjust the settings by using the Navigation buttons.

automatically save the new settings.

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On-Screen Display (OSD) Menu Tree

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Display

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AudioSetupInformation

Sub-menu Menu Option

Presentation

Bright

Cinema

Display Mode

Gaming

User

3D

Brightness (-/+, -50~50)

Contrast (-/+, -50~50)

Sharpness (-/+, 1~15)

Image

Settings

Color (-/+, -50~50)

Tint (-/+, -50~50)

Film

Video

Gamma

Graphics

Standard (2.2)

Brilliant Color™ (-/+, 1~10)

Color

Temperature

Warm

Standard

Cool

Cold

Red

Green

Blue

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Color Settings

Color Matching

Color

Hue/R

Saturation/G

Cyan

Yellow

Magenta

White

(-/+,

-50~50)

(-/+,

-50~50)

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Brightness

Mode

Reset

Color Space

Dynamic Black

Eco

Power

100%~50%

Gain/B

Reset

Exit

Auto

RGB

(0~255)

RGB

(16~235)

YUV

(-/+,

-50~50)

3D

Aspect

Ratio

3D Mode

3D Format

3D Sync

Invert

4:3

16:9

Full

L.BOX

Auto

Off

On

Auto

SBS

Top and Bottom

Frame

Sequential

Off

On

Zoom (-/+, -5~25)

Top-Left

Top-Right

Four Corners

Bottom-Left

Bottom-Right

Keystone

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H. Keystone (-/+, -30~30)

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V. Keystone (-/+, -30~30)

Auto

Keystone

Reset

Display Menu

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Menu Description

Display Mode

There are several predefined display modes
that you can choose from to suit your viewing
preference.

Mode Description

Suitable for most presenting

Presentation

needs for business and
education environments.

Image

Settings

Bright

Cinema

Gaming

User User’s custom settings.

3D

Brightness

The higher the value, the brighter the image.
Lower values will result in a darker image.

Suitable for bright, well-lit
environments.

Provides the best balance
of detail and colors for
watching movies.

Optimizes your projector for
maximum contrast and vivid
colors allowing you to see
shadow detail when playing
games.

Optimized for 3D content.

NOTE: 3D glasses
are needed.

Contrast

Use this to set the peak white level after you
have previously adjusted the Brightness
setting to suit your selected input and viewing
environment.

Sharpness

A high value results in a sharper picture; a low
value softens the picture.

Color

Adjust an image from black and white to fully
saturated color.

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Tint

The higher the value, the more greenish the
picture becomes. The lower the value, the more
reddish the picture becomes.

Gamma

Reflects the relationship between input source
and picture brightness.

Color Settings

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Setting Description

A color-processing algorithm

Brilliant
Color™

and enhancements to
enable higher brightness
while providing true, more
vibrant colors in picture.

Color

Temperature

Color

Matching

Select from Warm,
Standard, Cool, or Cold.

Only in permanent
installations with controlled
lighting levels such as:
boardrooms, lecture halls, or
home theaters should Color
Matching be considered.

Color Matching
provides fine color
control adjustment to
allow for more accurate
color reproduction,
should you require it.

If you have purchased
a test disc, which
contains various color
test patterns and can
be used to test the
color presentation on
monitors, TVs,
projectors, etc., you
can project any image
from the disc on the
screen and enter the
Color Matching menu
to make adjustments.

Select from Auto, RGB

Color Space

Brightness Mode

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(0~255), RGB (16~235),
and YUV color space.

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Mode Description

Automatically adjust the

Dynamic

Black

picture brightness in order to
give optimum contrast
performance.

Eco

Dim the light output, lowering
power consumption.

Select the power percentage

Power

(50%~100%) for brightness
mode.

Reset

Return current display mode settings
(Brightness, Contrast, Sharpness, Color, Tint,
Gamma, Brilliant Color, Color Temperature,
Color Matching, Color Space, Brightness Mode)
to default values.

3D Mode

Enable or disable the 3D function.

3D Format

Select the 3D content format.

NOTE: A Blu-ray 3D source will be
detected automatically, and options will
not be selectable.

3D

[1]

Option Description

When a 3D identification

Auto

signal is detected, the 3D
format is selected
automatically.

SBS (Side-

by-Side)

Top and

Bottom

Frame

Sequential

Display in Side-by-Side
format.

Display in Top and Bottom
format.

Display in Frame Sequential
format.

3D Sync Invert

Enable or disable the 3D Sync Invert function.

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Select the aspect ratio of the projected image.

Aspect

Ratio

Aspect

Ratio

4:3

16:9

L.BOX

Description

Scales an image so that it is
displayed in the center of the
screen with a 4:3 aspect ratio.
This is most suitable for 4:3
images like computer monitors,
standard definition TV, and 4:3
aspect DVD movies, as it
displays them without aspect
alteration.

Scales an image so that it is
displayed in the center of the
screen with a 16:9 aspect ratio.
This is most suitable for images
which are already in a 16:9
aspect, like high definition TV.

For non-16:9 letterbox source
and if you use an external 16:9
lens to display 2.35:1 aspect ratio
in full resolution.

Full

Auto

Zoom Reduce or magnify the projected image.

Keystone

Extend the image to fully fill the
screen.

Scales an image proportionally to
fit the projector’s native resolution
in its horizontal width. This is
suitable for the incoming image
which is neither 4:3 nor 16:9 and
you want to make the most use of
the screen without altering the
image’s aspect ratio.

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Option Description

Adjust each corner to make a
square image when the
projection surface is not level.

NOTE: While adjusting
the Four Corners, the

Four

Corners

Aspect Ratio, Edge
Mask, Image Shift, and
Zoom menus will be
disabled. To enable
them, reset the
Keystone settings to
default.

H.

Keystone

V.

Keystone

Auto

Keystone

Reset

Adjust image distortion
horizontally.

Adjust image distortion
vertically.

Automatically correct the
keystone.

Return the Keystone settings
to default.

1. This projector is a 3D ready projector with DLP-Link 3D solution. Please make sure your 3D
glasses are for DLP-Link 3D. This projector supports frame sequential (page-flip) 3D via the
HDMI 1/HDMI 2 ports. For the best performance, 1920 x 1080 resolution is recommended.
Please note that 4K (3840 x 2160) resolution is not supported in 3D mode.

Audio Menu

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Menu Description

Mute Temporarily turn off the sound.

Volume Adjust the volume level.

Setup Menu

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Menu Description

Projection

Power

Settings

Select the preferred projection: Front, Rear, Ceiling­Top, and Rear-Top.

Direct Power On

Automatically power on the projector when
AC power is supplied, without pressing the
Power button on the projector or the remote
control.

Signal Power On

Automatically power on the projector when a
signal is detected, without pressing the
Power button on the projector or on the
remote control.

Auto Power Off

A countdown timer will start when there is
no signal being sent to the projector. The
projector will automatically power off when
the countdown has finished (in minutes).

Security

HDMI CEC

Security

Enable or disable a password prompt before
using the projector.

NOTE: The default password is: 1234

Security Timer

Set the amount of time the projector can be
used. Once this time has elapsed you will be
requested to enter your password again.

Change Password

Set or modify the password.

When you connect HDMI CEC-compatible devices to
the projector with HDMI cables, you can control them
on the same power on or power off status using the
HDMI CEC control feature in the projector’s OSD.
This lets one device or multiple devices in a group
power on or power off via HDMI CEC in a typical
configuration.

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NOTE:

▪ In order for the CEC function to

work properly, make sure that the
device is correctly connected to the
HDMI input of the projector via an
HDMI cable, and its CEC function is
turned on.

▪ Depending on the connected

device, the CEC function may not
work.

Test

Pattern

Options

Select the test pattern from green grid, magenta grid,
white grid, white, or disable this function (off).

Language

Select the On-Screen Display (OSD) Menu
language.

Auto Source

Automatically find an available input source.

High Altitude

When On, the fans will spin faster for better
cooling and performance. This is useful for
high altitude environments where the air is
thin.

Keypad Lock

Lock all keypad buttons, except for the
Power key.

NOTE: To release keypad lock, press and hold
the Enter key on the projector for 5 seconds.
You can also use the remote control and go to:
Setup > Keypad Lock > Off.

Logo

Set the “startup screen”. If changes are
made, they will take effect the next time the
projector is powered on.

Return the settings to default.

Reset

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NOTE: When resetting, the following settings
will still remain: Language, Projection, High
Altitude, Security Settings, Zoom, Keystone
Settings.

Information Menu

View Serial Number, Source, Resolution, Refresh Rate, Display Mode, Light Source Hours,
Brightness Mode, and Firmware Version information.

Technical Specifications

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Item Category Specifications

P/N. LS740HD

Model

No. VS19579

Type Laser

Display Size 30”~300”

Throw Ratio

Projector

Lens

Display

System

Input Signal HDMI

Resolution Native 1920 x 1080

Power Input Voltage

Temperature 0°C to 40°C (32°F to 104°F)

Humidity 10% to 80% (non-condensing)

Operating

Conditions

Altitude

fh: 15~102 kHz, fv:23~120 Hz,

DC IN 100-240V, 50/60 Hz

0 to 760 m (0 to 2,500 ft.) at

0°C to 40°C (32°F to 104°F)

760 to 1,520 m (2,500 to 5,000

ft.) at 0°C to 35°C (32°F to

1,520 to 3,660 m (5,000 to

12,000 ft.) at 0°C to 30°C (32°F

1.13~1.47

(100”@2.50m)

F=2.43~2.78,

f=16.901~21.6076 mm

1-CHIP DMD

Pixel rate: 165 MHz

(auto switch)

95°F)

to 86°F)

Conditions

Dimensions

Consumption

1. The test condition follows EEI standards.

Projector Dimensions

286 mm (W) x 129 mm (H) x 216 mm (D)

33 von 54 29.02.2024, 12:40

Temperature -20°C to 60°C (-4°F to 140°F)

Storage

Weight Physical 3.0 kg (6.61 lbs)

Power

Humidity 0% to 90% (non-condensing)

Altitude 0 to 12,100 m (0 to 40,000 ft.)

Physical

(W x H x D)

[1]

On

Off < 0.5W (Standby)

286 x 216 x 129 mm

(11.26” x 8.50” x 5.08”)

210W (Typical)

HDMI Video Timing

HDMI PC Timing

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Timing Chart

Timing Resolution Refresh Rate (Hz)

SDTV 640 x 480 60

SDTV (480i) 720 x 480 60

SDTV (480p) 720 x 480 60

SDTV (576i) 720 x 576 50

SDTV (576p) 720 x 576 50

HDTV (720p) 1280 x 720 50 / 60

HDTV (1080i) 1920 x 1080 50 / 60

HDTV (1080p) 1920 x 1080 24 / 50 / 60

34 von 54 29.02.2024, 12:40

3D Support Timing

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Signal Resolution Refresh Rate (Hz)

640 x 480 60 / 67 / 72 / 75

VGA

720 x 400 70

800 x 600 56 / 60 / 72 / 75

SVGA

832 x 624 75

1024 x 768 60 / 70 / 75

XGA

1152 x 864 75

Quad-VGA 1280 x 960 60

SXGA 1280 x 1024 60 / 75

WXGA+ 1440 x 900 60

WSXGA+ 1680 x 1050 60

WUXGA 1920 x 1200-RB2 59.95

HD 1280 x 720 50 / 60 / 120

1080P 1920 x 1080 50 / 60

MAC 13" 640 x 480 60

MAC 19" 1024 x 768 75

MAC 21" 1152 x 870 75

HDMI 3D

Frame Packing Format

Timing Resolution Refresh Rate (Hz)

1080p 1920 x 1080 24

720p 1280 x 720 50 / 60

Side by Side Format

Timing Resolution Refresh Rate (Hz)

1080i 1920 x 1080 50 / 60

Timing Resolution Refresh Rate (Hz)

1080p 1920 x 1080 24

LED Indicators

35 von 54 29.02.2024, 12:40

Top and Bottom Format

FCC Compliant Statement

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Status and

Description

Standby

State

(Power cord

input)

Power On

(Warming)

Power On
and Lamp

Lighting

Power Off

(Cooling)

Power Indicator

Light

Red Blue Red Blue

Steady

Light

Flashing

Light

(1 sec off/

1 sec on)

Steady

Light

Flashing

Light

(0.5 sec

off/0.5 sec

on)

Back to
red steady
light when

the

cooling

fan turns

off.

Temperature

Indicator

Light

Light

Source

Indicator

Light

Error

(Lamp

Overheat)

Error

(Lamp

Failure)

Error

(Fan

Failure)

Error

(Overheat)

Steady Light

Steady

Light

Flashing Light

Steady Light

Compliance Information

This section addresses all connected requirements and statements regarding regulations.
Confirmed corresponding applications shall refer to nameplate labels and relevant markings on the
unit.

36 von 54 29.02.2024, 12:40

Industry Canada Statement

CE Conformity for European Countries

Declaration of RoHS2 Compliance

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

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 equipment does cause harmful interference to radio or television
reception, which can be determined by 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 equipment.

This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de classe B est conforme à la norme NMB-003 du Canada.
CAN ICES-003(B)/NMB-003(B)

The device complies with the EMC Directive 2014/30/EU and Low Voltage Directive

2014/35/EU. Ecodesign Directive 2009/125/EC and Radio Equipment Directive
2014/53/EU. (Frequency Range:2400~2483.5 MHz, 5150~5250 MHz) (Max Output Power: under
20 dBm)

The 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 2012/19/EU (WEEE). The mark indicates the requirement NOT to
dispose of the equipment as unsorted municipal waste, but use the return and collection
systems according to local law.

37 von 54 29.02.2024, 12:40

Indian Restriction of Hazardous Substances

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

This product has been designed and manufactured in compliance with Directive 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:

Proposed

Substance

Lead (Pb) 0.1% < 0.1%

Mercury (Hg) 0.1% < 0.1%

Cadmium (Cd) 0.01% < 0.01%

Hexavalent Chromium

(Cr6⁺)

Polybrominated
biphenyls (PBB)

Polybrominated

diphenyl ethers (PBDE)

Bis (2-ethylhexyl)

phthalate (DEHP)

Butyl benzyl phthalate

(BBP)

Dibutyl phthalate (DBP) 0.1% < 0.1%

Maximum

Concentration

0.1% < 0.1%

0.1% < 0.1%

0.1% < 0.1%

0.1% < 0.1%

0.1% < 0.1%

Actual

Concentration

Diisobutyl phthalate

(DIBP)

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:

▪ Copper alloy containing up to 4% lead by weight.
▪ Lead in high melting temperature type solders (i.e. lead-based alloys containing 85% by weight

or more lead).

▪ Electrical and electronic components containing lead in a glass or ceramic other than dielectric

ceramic in capacitors, e.g. piezoelectronic devices, or in a glass or ceramic matrix compound.

▪ Lead in dielectric ceramic in capacitors for a rated voltage of 125V AC or 250V DC or higher.

Restriction on Hazardous Substances statement (India). This product complies with the “India E­waste Rule 2011” and prohibits use of lead, mercury, hexavalent chromium, polybrominated
biphenyls or polybrominated diphenyl ethers in concentrations exceeding 0.1 weight % and 0.01
weight % for cadmium, except for the exemptions set in Schedule 2 of the Rule.

38 von 54 29.02.2024, 12:40

Product Disposal at End of Product Life

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

ViewSonic® respects the environment and is committed to working and living green. Thank you
for being part of Smarter, Greener Computing. Please visit the ViewSonic® website to learn more.

USA & Canada
https://www.viewsonic.com/us/go-green-with-viewsonic < https://
www.viewsonic.com/us/go-green-with-viewsonic>

Europe
https://www.viewsonic.com/eu/go-green-with-viewsonic < https://
www.viewsonic.com/eu/go-green-with-viewsonic>

Taiwan
https://recycle.epa.gov.tw/ < https://recycle.epa.gov.tw/>

Copyright Information

Copyright© ViewSonic® Corporation, 2023. All rights reserved.

Macintosh and Power Macintosh are registered trademarks of Apple Inc.

Microsoft, Windows, and the Windows logo are registered trademarks of Microsoft Corporation in
the United States and other countries.

ViewSonic®, the three birds logo, OnView, ViewMatch, and ViewMeter are registered trademarks
of ViewSonic® Corporation.

VESA is a registered trademark of the Video Electronics Standards Association. DPMS,
DisplayPort, and DDC are trademarks of VESA.

ENERGY STAR® is a registered trademark of the U.S. Environmental Protection Agency (EPA).

As an ENERGY STAR® partner, ViewSonic® Corporation has determined that this product meets
the ENERGY STAR® guidelines for energy efficiency.

Disclaimer: ViewSonic® Corporation shall not be liable for technical or editorial errors 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 any means, for any
purpose without prior written permission from ViewSonic® Corporation.

LS740HD_UG_ENG_1a_20230627

Customer Service Contact Information

39 von 54 29.02.2024, 12:40

Asia Pacific & Africa

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

For technical support or product service, see the table below or contact your reseller.

You will need the product's serial number

40 von 54 29.02.2024, 12:40

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Country / Region Website

Australia

Bangladesh

中囯(China)

香港 (繁體中文)

Hong Kong

(English)

India

Indonesia

Israel

日本 (Japan)

https://viewsonic.com/au/ < https://viewsonic.com/

au/>

https://www.viewsonic.com/bd/ < https://

www.viewsonic.com/bd/>

https://www.viewsonic.com.cn < https://

www.viewsonic.com.cn>

https://www.viewsonic.com/hk/ < https://

www.viewsonic.com/hk/>

https://www.viewsonic.com/hk-en/ < https://

www.viewsonic.com/hk-en/>

https://www.viewsonic.com/in/ < https://

www.viewsonic.com/in/>

https://www.viewsonic.com/id/ < https://

www.viewsonic.com/id/>

https://www.viewsonic.com/il/ < https://

www.viewsonic.com/il/>

https://www.viewsonic.com/jp/ < https://

www.viewsonic.com/jp/>

Korea

Malaysia

Middle East

Myanmar

Nepal

New Zealand

Pakistan

Philippines

Singapore

https://www.viewsonic.com/kr/ < https://

www.viewsonic.com/kr/>

https://www.viewsonic.com/my/ < https://

www.viewsonic.com/my/>

https://www.viewsonic.com/me/ < https://

www.viewsonic.com/me/>

https://www.viewsonic.com/mm/ < https://

www.viewsonic.com/mm/>

https://www.viewsonic.com/np/ < https://

www.viewsonic.com/np/>

https://www.viewsonic.com/nz/ < https://

www.viewsonic.com/nz/>

https://www.viewsonic.com/pk/ < https://

www.viewsonic.com/pk/>

https://www.viewsonic.com/ph/ < https://

www.viewsonic.com/ph/>

https://www.viewsonic.com/sg/ < https://

www.viewsonic.com/sg/>

臺灣 (Taiwan)

41 von 54 29.02.2024, 12:40

https://www.viewsonic.com/tw/ < https://

www.viewsonic.com/tw/>

Americas

Europe

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

ประเทศไทย

(Thailand)

Việt Nam

South Africa &

Mauritius

Country /

Region

United States

Canada

Latin America

https://www.viewsonic.com/th/ < https://

www.viewsonic.com/th/>

https://www.viewsonic.com/vn/ < https://

www.viewsonic.com/vn/>

https://www.viewsonic.com/za/ < https://

www.viewsonic.com/za/>

Website

https://www.viewsonic.com/us/ < https://

www.viewsonic.com/us/>

https://www.viewsonic.com/us/ < https://

www.viewsonic.com/us/>

https://www.viewsonic.com/la/ < https://

www.viewsonic.com/la/>

Country /

Region

Europe

France

Deutschland

Қазақстан

Россия

España

Türkiye

Україна

Website

https://www.viewsonic.com/eu/ < https://

www.viewsonic.com/eu/>

https://www.viewsonic.com/fr/ < https://

www.viewsonic.com/fr/>

https://www.viewsonic.com/de/ < https://

www.viewsonic.com/de/>

https://www.viewsonic.com/kz/ < https://

www.viewsonic.com/kz/>

https://www.viewsonic.com/ru/ < https://

www.viewsonic.com/ru/>

https://www.viewsonic.com/es/ < https://

www.viewsonic.com/es/>

https://www.viewsonic.com/tr/ < https://

www.viewsonic.com/tr/>

https://www.viewsonic.com/ua/ < https://

www.viewsonic.com/ua/>

42 von 54 29.02.2024, 12:40

United

Kingdom

https://www.viewsonic.com/uk/ < https://

www.viewsonic.com/uk/>

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Limited Warranty

ViewSonic® Projector

What the warranty covers:

ViewSonic® warrants its products to be free from defects in material and workmanship, under
normal use, during the warranty period. If a product proves to be defective in material or
workmanship during the warranty period, ViewSonic® will, at its sole option, repair or replace the
product with a like product. Replacement product or parts may include remanufactured or
refurbished parts or components.

Limited Three (3) year General Warranty:

Subject to the more limited one (1) year warranty set out below, North and South America: Three
(3) years warranty for all parts excluding the lamp, three (3) years for labor, and one (1) year for
the original lamp from the date of the first consumer purchase.

Other regions or countries: Please check with your local dealer or local ViewSonic® office for the
warranty information.

Limited One (1) year Heavy Usage Warranty:

Under heavy usage settings, where a projector’s use includes more than fourteen (14) hours
average daily usage, North and South America: One (1) year warranty for all parts excluding the
lamp, one (1) year for labor, and ninety (90) days for the original lamp from the date of the first
consumer purchase; Europe: One (1) year warranty for all parts excluding the lamp, one (1) year for
labor, and ninety (90) days for the original lamp from the date of the first consumer purchase.
Other regions or countries: Please check with your local dealer or local ViewSonic® office for the
warranty information. Lamp warranty subject to terms and conditions, verification and approval.
Applies to manufacturer’s installed lamp only. All accessory lamps purchased separately are
warranted for 90 days.

Who the warranty protects:

This warranty is valid only for the first consumer purchaser.

What the warranty does not cover:

43 von 54 29.02.2024, 12:40

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

▪ Any product on which the serial number has been defaced, modified, or removed.
▪ Damage, deterioration, or malfunction resulting from:

▪ Accident, misuse, neglect, fire, water, lightning, or other acts of nature, unauthorized

product modification, or failure to follow instructions supplied with the product.

▪ Operation outside of product specifications.
▪ Operation of the product for other than the normal intended use or not under normal

conditions.

▪ Repair or attempted repair by anyone not authorized by ViewSonic®.
▪ Any damage of the product due to shipment.
▪ Removal or installation of the product.
▪ Causes external to the product, such as electric power fluctuations or failure.
▪ Use of supplies or parts not meeting ViewSonic’s specifications.
▪ Normal wear and tear.
▪ Any other cause which does not relate to a product defect.

▪ Removal, installation, and set-up service charges.

How to get service:

1. For information about receiving service under warranty, contact ViewSonic® Customer Support
(Please refer to the “Customer Support” page). You will need to provide your product’s serial
number.

2. To obtain warranted service, you will be required to provide: (a) the original dated sales slip,
(b) your name, (c) your address, (d) a description of the problem, and (e) the serial number of
the product.

3. Take or ship the product, freight prepaid, in the original container to an authorized ViewSonic®
service center or ViewSonic®.

4. For additional information or the name of the nearest ViewSonic® service center, contact
ViewSonic®.

Limitation of implied warranties:

There are no warranties, express or implied, which extend beyond the description contained herein
including the implied warranty of merchantability and fitness for a particular purpose.

Exclusion of damages:

ViewSonic’s liability is limited to the cost of repair or replacement of the product. ViewSonic®
shall not be liable for:

44 von 54 29.02.2024, 12:40

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

1. Damage to other property caused by any defects in the product, damages based upon
inconvenience, loss of use of the product, loss of time, loss of profits, loss of business
opportunity, loss of goodwill, interference with business relationships, or other commercial
loss, even if advised of the possibility of such damages.

2. Any other damages, whether incidental, consequential or otherwise.

3. Any claim against the customer by any other party.

Effect of state law:

This warranty gives you specific legal rights, and you may also have other rights which vary from
local authority. Some local governments do not allow limitations on implied warranties and/or do
not allow the exclusion of incidental or consequential damages, so the above limitations and
exclusions may not apply to you.

Sales outside the U.S.A. and Canada:

For warranty information and service on ViewSonic® products sold outside of the U.S.A. and
Canada, contact ViewSonic® or your local ViewSonic® dealer. The warranty period for this
product in mainland China (Hong Kong, Macao, and Taiwan Excluded) is subject to the terms and
conditions of the Maintenance Guarantee Card. For users in Europe and Russia, full details of
warranty provided can be found at:

ViewSonic EU (http://www.viewsonic.com/eu/) under

“Support/Warranty Information”.

Mexico Limited Warranty

ViewSonic® Projector

What the warranty covers:

ViewSonic® warrants its products to be free from defects in material and workmanship, under
normal use, during the warranty period. If a product proves to be defective in material or
workmanship during the warranty period, ViewSonic® will, at its sole option, repair or replace the
product with a like product. Replacement product or parts may include remanufactured or
refurbished parts or components & accessories.

How long the warranty is effective:

3 years for all parts excluding the lamp, 3 years for labor, 1 year for the original lamp from the date
of the first consumer purchase.

Lamp warranty subject to terms and conditions, verification and approval. Applies to
manufacturer’s installed lamp only.

All accessory lamps purchased separately are warranted for 90 days.

Who the warranty protects:

This warranty is valid only for the first consumer purchaser.

45 von 54 29.02.2024, 12:40

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

What the warranty excludes and does not cover:

▪ Any product on which the serial number has been defaced, modified or removed.
▪ Damage, deterioration, or malfunction resulting from:

▪ Accident, misuse, neglect, fire, water, lightning, or other acts of nature, unauthorized

product modification, unauthorized attempted repair, or failure to follow instructions
supplied with the product.

▪ Any damage of the product due to shipment.
▪ Causes external to the product, such as electrical power fluctuations or failure.
▪ Use of supplies or parts not meeting ViewSonic®’s specifications.
▪ Normal wear and tear.
▪ Any other cause which does not relate to a product defect.

▪ Any product exhibiting a condition commonly known as “image burn-in” which results when a

static image is displayed on the product for an extended period of time.

▪ Removal, installation, insurance, and set-up service charges.

How to get service:

For information about receiving service under warranty, contact ViewSonic® Customer Support
(Please refer to the attached “Customer Service” page). You will need to provide your product’s
serial number, so please record the product information in the space provided below on your
purchase for your future use. Please retain your receipt of proof of purchase to support your
warranty claim.

▪ For information about receiving service under warranty, contact ViewSonic® Customer Support

(Please refer to the “Customer Service” page). You will need to provide your product’s serial
number, so please record the product information in the space provided below on your
purchase for your future use. Please retain your receipt of proof of purchase to support your
warranty claim.

▪ To obtain warranty service, you will be required to provide: (a) the original dated sales slip, (b)

your name, (c) your address, (d) a description of the problem, and (e) the serial number of the
product.

▪ Take or ship the product, freight prepaid, in the original container to an authorized ViewSonic®

service center.

▪ Round trip transportation costs for in-warranty products will be paid by ViewSonic®.

Limitation of implied warranties:

There are no warranties, express or implied, which extend beyond the description contained herein
including the implied warranty of merchantability and fitness for a particular purpose.

Exclusion of damages:

ViewSonic®’s liability is limited to the cost of repair or replacement of the product. ViewSonic®
shall not be liable for:

46 von 54 29.02.2024, 12:40

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

▪ Damage to other property caused by any defects in the product, damages based upon

inconvenience, loss of use of the product, loss of time, loss of profits, loss of business
opportunity, loss of goodwill, interference with business relationships, or other commercial
loss, even if advised of the possibility of such damages.

▪ Any other damages, whether incidental, consequential or otherwise.
▪ Any claim against the customer by any other party.
▪ Repair or attempted repair by anyone not authorized by ViewSonic®.

47 von 54 29.02.2024, 12:40

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Contact Information for Sales & Authorized Service (Centro Autorizado de Servicio)

within Mexico:

Name, address, of manufacturer and importers:
México, Av. de la Palma #8 Piso 2 Despacho 203, Corporativo Interpalmas,
Col. San Fernando Huixquilucan, Estado de México
Tel: (55) 3605-1099 http://www.viewsonic.com/la/soporte/index.htm <

http://www.viewsonic.com/la/soporte/index.htm>

NÚMERO GRATIS DE ASISTENCIA TÉCNICA PARA TODO MÉXICO: 001.866.823.2004

Hermosillo:
Distribuciones y Servicios
Computacionales SA de CV.
Calle Juarez 284 local 2
Col. Bugambilias C.P: 83140
Tel: [phone]
E-Mail:

[email protected]
(mailto:[email protected]
et.mx)

Puebla, Pue. (Matriz):

RENTA Y DATOS, S.A. DE C.V.
Domicilio:
29 SUR 721 COL. LA PAZ
72160 PUEBLA, PUE.
Tel: [phone] CON
10 LINEAS
E-Mail:

[email protected]
(mailto:[email protected]
d.net.mx)

Villahermosa:

Compumantenimietnos Garantizados, S.A.
de C.V.
AV. GREGORIO MENDEZ #1504
COL, FLORIDA C.P. 86040
Tel: [phone] / 3 52
20 09
E-Mail:

[email protected]
(mailto:compumantenimientos@prodig
y.net.mx)

Veracruz, Ver.:

CONEXION Y DESARROLLO, S.A DE
C.V. Av.
Americas # 419
ENTRE PINZÓN Y ALVARADO
Fracc. Reforma C.P. 91919
Tel: [phone]
E-Mail:

[email protected] (mailt

o:[email protected])

48 von 54 29.02.2024, 12:40

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Chihuahua:
Soluciones Globales en
Computación
C. Magisterio # 3321 Col.
Magisterial
Chihuahua, Chih.
Tel: [phone]
E-Mail:

[email protected] (mail

Cuernavaca:

Compusupport de Cuernavaca SA de CV
Francisco Leyva # 178 Col. Miguel Hidalgo
C.P. 62040, Cuernavaca Morelos
Tel: [phone]
E-Mail:

[email protected] (mai
lto:[email protected])

to:[email protected])

Distrito Federal:

QPLUS, S.A. de C.V.
Av. Coyoacán 931
Col. Del Valle 03100, México,
D.F.
Tel: [phone]
E-Mail :

[email protected] (mailt
o:[email protected])

Guerrero Acapulco:

GS Computación (Grupo
Sesicomp)
Progreso #6-A, Colo Centro
39300 Acapulco, Guerrero
Tel: [phone]

Guadalajara, Jal.:
SERVICRECE, S.A. de C.V.
Av. Niños Héroes # 2281
Col. Arcos Sur, Sector Juárez
44170, Guadalajara, Jalisco
Tel: [phone]
E-Mail:

[email protected] (mai

lto:[email protected])

Monterrey:

Global Product Services
Mar Caribe # 1987, Esquina con Golfo
Pérsico
Fracc. Bernardo Reyes, CP 64280
Monterrey N.L. México
Tel: [phone]
E-Mail:

[email protected] (mailto:a

[email protected])

MERIDA:

ELECTROSER
Av Reforma No. 403Gx39 y 41
Mérida, Yucatán, México
CP97000
Tel: [phone]
E-Mail: [email protected] (mail

to:[email protected])

Tijuana:

STD

49 von 54 29.02.2024, 12:40

Oaxaca, Oax.:
CENTRO DE DISTRIBUCION Y
SERVICIO, S.A. de C.V.
Murguía # 708 P.A., Col. Centro, 68000,
Oaxaca
Tel: [phone]
Fax: [phone]
E-Mail. [email protected] (mailt

o:[email protected])

FOR USA SUPPORT:

ViewSonic® Corporation

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

381 Brea Canyon Road, Walnut, CA.
Av Ferrocarril Sonora #3780 L-C
Col 20 de Noviembr
Tijuana, Mexico

91789 USA

Tel: [phone]

http://www.viewsonic.com < http://

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Using the Projector Safely

Please read the following Safety Precautions before you start using the projector.

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LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

▪ Keep this user guide in a safe place for

later reference.

▪ Read all warnings and follow all

instructions.

▪ Allow at least 20“ (50 cm) clearance

around the projector to ensure proper
ventilation.

▪ Place the projector in a well-ventilated

area. Do not place anything on the
projector that prevents heat dissipation.

▪ Do not place the projector on an

uneven or unstable surface. The
projector may fall over, causing
personal injury or projector malfunction.

▪ Do not use if the projector is tilted at an

angle of more than 10° degrees left or
right, nor at an angle of more than 15°
degrees forwards or backwards.

▪ Do not look straight at the projector

lens during operation. The intense light
beam may damage your eyes.

▪ Do not place liquids near or on the

projector. Liquids spilled into the
projector may cause it to fail. If the
projector does become wet, disconnect
it from the power supply and call your
local service center to have the
projector serviced.

▪ When the projector is under operation,

you may sense some heated air and
odor from its ventilation grill. It is a
normal operation and not a defect.

▪ 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 and third blade are provided
for your safety. If the plug does not fit
into your outlet, obtain an adapter and
do not attempt to force the plug into the
outlet.

▪ Always open the lens shutter or

remove the lens cap when the projector
lamp is on.

▪ Do not block the projection lens with

any objects when the projector is under
operation as this could cause objects to
become heated and deformed or even
cause a fire.

▪ The lamp becomes extremely hot

during operation. Allow the projector to
cool for approximately 45 minutes prior
to removing the lamp assembly for
replacement.

▪ Do not use lamps beyond the rated

lamp life. Excessive use of lamps
beyond the rated life could cause them
to break on rare occasions.

▪ When connecting to a power outlet, DO

NOT remove the grounding prong.
Please ensure grounding prongs are
NEVER REMOVED.

▪ Protect the power cord from being

treaded upon or pinched, particularly at
the plug, and at the point where it
emerges from the projector.

▪ In some countries, the voltage is NOT

stable. This projector is designed to
operate safely within a voltage between
100 to 240 volts AC, but could fail if
power cuts or surges of ±10 volts
occur. In areas where voltage may
fluctuate or cut out, it is recommended
that you connect your projector through
a power stabilizer, surge protector, or

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Aspect Ratio

Refers to the ratio of the image width to the image height.

A

LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

▪ Never replace the lamp assembly or

any electronic component unless the
projector is unplugged.

▪ Do not attempt to disassemble the

projector. There are dangerous high
voltages inside which may cause death
if you should come into contact with
live parts.

▪ When moving the projector, be careful

not to drop or bump the projector on
anything.

▪ Do not place any heavy objects on the

projector or connection cables.

▪ Do not stand the projector on end

vertically. Doing so may cause the
projector to fall over, causing personal

uninterruptable power supply (UPS).

▪ If smoke, an abnormal noise, or a

strange odor is present, immediately
switch the projector off and call your
dealer or ViewSonic®. It is dangerous
to continue using the projector.

▪ Use only attachments/accessories

specified by the manufacturer.

▪ Disconnect the power cord from the AC

outlet if the projector is not being used
for a long period of time.

▪ Refer all servicing to qualified service

personnel.

injury or projector malfunction.

▪ Avoid exposing the projector to direct

sunlight or other sources of sustained
heat. Do not install near any heat
sources such as radiators, heat
registers, stoves, or other devices
(including amplifiers) that may increase
the temperature of the projector to
dangerous levels.

Glossary of Terms

NOTE: Some terms may not be applicable to your device.

BCFGHIKLMS

CAUTION: Possibly

hazardous optical

radiation is emitted from

this product. As with any
bright light source, do not
stare into the beam, RG2

IEC 62471-5:2015

Troubleshooting Common Problems

Why doesn't the projector turn on?

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LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

Why is there no picture?

What should I do if the image is blurry?

Why is the remote control not working?

What should I do if the projector freezes or doesn't respond?

Maintaining the Projector

General Precautions

▪ Make sure the projector is turned off and the power cable is unplugged from the power outlet.
▪ Never remove any parts from the projector. Contact ViewSonic® or a reseller when any part of

the projector needs replacing.

▪ Never spray or pour any liquid directly onto the case.
▪ Handle the projector with care, as a darker-colored projector, if scuffed, may show marks more

clearly than a lighter-colored projector.

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Cleaning the Lens

▪ Use a canister of compressed air to remove dust.
▪ If the lens is still not clean, use lens-cleaning paper or moisten a soft cloth with lens cleaner

and gently wipe the surface.

CAUTION: Never rub the lens with abrasive materials.

Cleaning the Case

▪ Use a soft, lint-free, dry cloth to remove dirt or dust.
▪ If the case is still not clean, apply a small amount of non-ammonia, non-alcohol based, mild

non-abrasive detergent onto a clean, soft, lint-free cloth, then wipe the surface.

CAUTION: Never use wax, alcohol, benzene, thinner, or
other chemical detergents.

Storing the Projector

If you intend to store the projector for an extended period of time:

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LS740HD - ViewSonic Projectors https://manuals.viewsonic.com/LS740HD_Full_Guide

▪ Ensure the temperature and humidity of the storage area are within the recommend range.
▪ Retract the adjuster foot completely.
▪ Remove the batteries from the remote control.
▪ Pack the projector in its original packaging or equivalent.

Disclaimer

▪ ViewSonic® does not recommend the use of any ammonia or alcohol-based cleaners on the

lens or case. Some chemical cleaners have been reported to damage the lens and/or case of
the projector.

▪ ViewSonic® will not be liable for damage resulting from use of any ammonia or alcohol-based

cleaners.

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