ViewSonic LS920WU User manual

LS920WU/LS921WU
Projector
User Guide
Model No. VS18318 / VS18319
Model Name: LS920WU / LS921WU
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”

Thank you for choosing ViewSonic®
As a world-leading provider of visual solutions, ViewSonic® is dedicated to exceeding
the world’s expectations for technological evolution, innovation, and simplicity.
At ViewSonic®, we believe that our products have the potential to make a positive
impact in the world, and we are confident that the ViewSonic® product you have
chosen will serve you well.
Once again, thank you for choosing ViewSonic®!

3
Safety Precauons
Please read the following Safety Precautions before you start using the projector.
• Keep this user guide in a safe place for later reference.
• Read all warnings and follow all instrucons.
• Allow at least 20“ (50 cm) clearance around the projector to ensure proper
venlaon.
• Place the projector in a well-venlated area. Do not place anything on the
projector that prevents heat dissipaon.
• Do not place the projector on an uneven or unstable surface. The projector may
fall over, causing personal injury or projector malfuncon.
• Do not use if the projector is lted at an angle of more than 10° degrees le or
right, nor at an angle of more than 15° degrees forwards or backwards.
• Do not look straight at the projector lens during operaon. The intense light
beam may damage your eyes.
• Do not block the projecon lens with any objects when the projector is under
operaon as this could cause objects to become heated and deformed or even
cause a re.
• Do not aempt 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 connecon cables.
• Do not stand the projector on end vercally. Doing so may cause the projector to
fall over, causing personal injury or projector malfuncon.
• 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 ampliers) that may increase the temperature
of the projector to dangerous levels.
• 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 operaon, you may sense some heated air and odor
from its venlaon grill. It is a normal operaon and not a defect.

• Do not aempt 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 t into
your outlet, obtain an adapter and do not aempt to force the plug into the
outlet.
• When connecng 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, parcularly 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 uctuate
or cut out, it is recommended that you connect your projector through a power
stabilizer, surge protector, or uninterruptable power supply (UPS).
• If smoke, an abnormal noise, or a strange odor is present, immediately switch
the projector o and call your dealer or ViewSonic®. It is dangerous to connue
using the projector.
• Use only aachments/accessories specied by the manufacturer.
• Disconnect the power cord from the AC outlet if the projector is not being used
for a long period of me.
• Refer all servicing to qualied service personnel.
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

5
Contents
Introduction ................................................................ 8
Product Overview ............................................................................................ 9
Projector........................................................................................................... 9
Controls and Functions............................................................................................ 9
Connection Ports................................................................................................... 10
Remote Control................................................................................................11
Controls and Functions.......................................................................................... 11
Remote Control Effective Range............................................................................ 12
Replacing the Remote Control Batteries................................................................ 12
Choosing a Location ........................................................................................13
Initial Setup............................................................... 13
Projection Dimensions ....................................................................................14
LS920WU .........................................................................................................15
16:10 Image on a 16:10 Screen.............................................................................. 15
16:10 Image on a 4:3 Screen.................................................................................. 15
LS921WU .........................................................................................................16
16:10 Image on a 16:10 Screen.............................................................................. 16
16:10 Image on a 4:3 Screen.................................................................................. 16
Mounting the Projector ..................................................................................17
Preventing Unauthorized Use .........................................................................18
Using the Security Slot .....................................................................................18
Using the Password Function ...........................................................................19
Setting a Password................................................................................................ 19
Changing the Password ......................................................................................... 20
Disabling the Password Function........................................................................... 20
Forgetting the Password ....................................................................................... 21
Password Recall Procedure ................................................................................... 21
Locking the Control Keys ..................................................................................22
Connecting to Power ............................................................................................23

6
Making Connections.................................................. 23
Connecting to Video Sources................................................................................24
HDMI Connection.................................................................................................. 24
S-Video Connection............................................................................................... 24
Composite Video Connection................................................................................ 24
Connecting to Computer Sources.........................................................................24
VGA Connection .................................................................................................... 24
VGA Out Connection ............................................................................................. 24
Connecting to Audio.............................................................................................24
Connecting to HDBaseT Device ............................................................................24
Turning the Projector On/Off ...............................................................................26
Starting Up the Projector ...................................................................................... 26
First Time Activation ................................................................................................... 26
Operation.................................................................. 26
Shutting Down the Projector................................................................................. 27
Selecting an Input Source .....................................................................................28
Adjusting the Projected Image .............................................................................29
Adjusting the Projector's Height and Projection Angle............................................... 29
Auto-Adjusting the Image ........................................................................................... 29
Fine-Tuning the Image Size and Clarity ................................................................. 29
Correcting Keystone.............................................................................................. 30
Controllability of the Projected Image .................................................................. 31
Hiding the Image ..................................................................................................31
Controlling the Projector through a LAN Environment ........................................32
Configuring the LAN Control Settings.................................................................... 32
General On-Screen Display (OSD) Menu Operation .........................................34
Menu Functions ........................................................ 34
On-Screen Display (OSD) Menu Tree....................................................................35
DISPLAY Menu ......................................................................................................42
IMAGE Menu ........................................................................................................45
POWER MANAGEMENT Menu .............................................................................49
BASIC Menu..........................................................................................................52
ADVANCED Menu .................................................................................................55
SYSTEM Menu.......................................................................................................59
INFORMATION Menu ...........................................................................................61

7
Specifications........................................................................................................62
Appendix................................................................... 62
Projector Dimensions............................................................................................ 63
Timing Chart .........................................................................................................63
Analog RGB............................................................................................................ 63
HDMI (PC).............................................................................................................. 65
HDMI (Video)......................................................................................................... 66
Video/S-Video ....................................................................................................... 67
Component video.................................................................................................. 67
HDBaseT ................................................................................................................ 67
Troubleshooting ...................................................................................................68
Common Problems................................................................................................ 68
LED Indicators........................................................................................................ 69
Maintenance.........................................................................................................70
General Precautions.............................................................................................. 70
Cleaning the Lens .................................................................................................. 70
Cleaning the Case .................................................................................................. 70
Storing the Projector............................................................................................. 70
Disclaimer.............................................................................................................. 70
Light Source Information......................................................................................71
Light Source Hour.................................................................................................. 71
Extending Light Source Life ................................................................................... 71

8
Package Contents
NOTE: The power cord and video cables included in your package may vary depending
on your country. Please contact your local reseller for more informaon.
Introduction

9
Product Overview
Projector
Controls and Functions
Focus Ring
Zoom Ring
MENU BLANK
EXIT
ENTER
COLOR
MODE
Power
Indicator Light
Temperature
Indicator Light
Light Source
Indicator Light
Projection Lens
Lens shift
(left/right)
Remote IR sensor
Lens shift
(up/down)
Power key/Remote IR sensor
Key Description
[ ] Power Toggles the projector between standby mode and Power On.
[ / / / ] Keystone
Keys
Manually corrects distorted images resulting from an angled
projection.
[ / / / ]
Left/Right/Up/Down
Selects the desired menu items and makes adjustments when
the On-Screen Display (OSD) Menu is activated.
Menu/Exit Turns on or off the On-Screen Display (OSD) Menu.
Source Displays the input source selection bar.
(Help) Displays the HELP menu with a long press for 3 seconds.
Blank Hides the screen picture.
Enter Enacts the selected On-Screen Display (OSD) Menu item when
the OSD Menu is activated.
[ ] Corner Adjustment Displays the Corner Adj. menu when the OSD menu is not
activated.
Color Mode Displays the color mode selection bar.

10
Connection Ports
123 6 9
10 12 13
7
4 8
15
16
14
11
5
AC Power Cord Inlet
Ceiling Mount Holes
Security Slot
Security Bar
Adjuster Foot
Port Description
[1] HDMI 1 HDMI port.
[2] HDMI 2 HDMI port.
[3] USB 5V/1.5A OUT (Service) USB Type A port for power supply and serivce.
[4] HDBase T HDBaseT port.
[5] VIDEO Composite video port.
[6] S-VIDEO S-Video port.
[7] AUDIO IN (R) Audio signal (right) input socket.
[8] AUDIO IN (L) Audio signal (left) input socket.
[9] COMPUTER IN RGB (PC) signal input socket.
[10] MONITOR OUT RGB (PC) signal output socket.
[11] RS-232 RS-232 control port.
[12] RJ-45 LAN port.
[13] AUDIO IN Audio signal input socket.
[14] AUDIO OUT Audio signal output socket.
[15] 3D VESA 3D VESA port.
[16] 12V OUT 12V DC output terminal.

11
Remote Control
Controls and Functions
Button Description
On/ Off Toggles between standby
mode and Power On.
COMP Selects the source from
the COMPUTER IN port for
display.
HDMI 1 Selects the source from the
HDMI 1 port for display.
HDMI 2 Selects the source from the
HDMI 2 port for display.
Auto Sync Automatically determines
the best picture timings for
the displayed image.
Source Displays the source selection
bar.
[ / / / ]
Keystone Keys
Manually corrects distorted
images resulting from an
angled projection.
Enter Enacts the selected OSD
Menu item.
(Corner
adjustment)
Displays the Corner Adj.
menu when the OSD menu is
not activated.
Button Description
Left/ Right
Up/ Down
Selects the desired menu
items and makes adjustments.
Menu Turns on/off the On-Screen
Display (OSD) Menu or goes
back to previous OSD Menu.
(Laser)
Emits visible laser pointer light
for presentation purposes.
Exit Exits and saves menu
settings.
Aspect Displays the aspect ratio
selection bar.
Freeze Freezes the projected image.
Pattern Displays embedded test
pattern.
Blank Hides the screen picture.
PgUp (Page Up)/
PgDn (Page
Down)
Operates your display
software program (on
a connected PC) which
responds to page up/down
commands (like Microsoft
PowerPoint).
NOTE: Only available when
a PC input signal is
selected.
(Presentation
Timer)
Displays the
Presentation Timer menu.
Eco Mode Selects the Eco mode.
(Volume Up) Increases the volume level.
(Volume
Down)
Decreases the volume level.
(Mute) Toggles audio between on
and off.
Color Mode Displays the color mode
selection bar.
Magnifies the projected
picture size.
Reduces the projected
picture size.
(INFORMATION)
Displays the INFORMATION
menu.
Network Displays the
LAN Control Settings menu.

12
Remote Control Effective Range
To ensure proper function of the remote control
follow the steps below:
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).
Approx. 30°
Replacing the Remote Control Batteries
1. Remove the battery cover from the rear of the remote control by pressing the
finger grip and sliding it down.
2. Remove any existing batteries (if necessary) and install two AAA batteries.
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.
• Dispose of the used batteries according to the manufacturer’s instructions and
local environment regulations for your region.
• If the batteries are drained or if you will not be using the remote control for an
extended period of time, remove the batteries to avoid damage to the remote
control.

13
Initial Setup
This section provides detailed instructions for setting up your projector.
Choosing a Location
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:
1. Front
The projector is placed near the floor in
front of the screen.
2. Front Ceiling
The projector is suspeneded upside-
down from the ceiling in front of the
screen.
3. Rear Ceiling
The projector is suspended upside-down
from the ceiling behind the screen.
NOTE: A special rear projection screen
is required.
4. Rear
The projector is placed near the floor
behind the screen.
NOTE: A special rear projection screen
is required.

14
Projection Dimensions
NOTE: See “Specifications” on page 62 for the native display resolution of this
projector.
• 16:10 Image on a 16:10 Screen
+
-
b
h
g
a
+
-
• 16:10 Image on a 4:3 Screen
+
-
b
h
g
a
+
-
NOTE: (e) = Screen / (f) = Center of Lens

15
LS920WU
16:10 Image on a 16:10 Screen
(a) Screen
Size
(b) Projection Distance (c) Image
Height
(d) Vertical Offset
minimum maximum minimum maximum
in. mm in. mm in. mm in. mm in. mm in. mm
30 762 34 876 55 1401 16 404 -8 -202 8 202
40 1016 46 1168 74 1869 21 538 -11 -269 11 269
50 1270 57 1460 92 2336 26 673 -13 -337 13 337
60 1524 69 1752 110 2803 32 808 -16 -404 16 404
70 1778 80 2044 129 3270 37 942 -19 -471 19 471
80 2032 92 2336 147 3737 42 1077 -21 -538 21 538
90 2286 103 2628 166 4204 48 1212 -24 -606 24 606
100 2540 115 2920 184 4671 53 1346 -26 -673 26 673
120 3048 138 3503 221 5606 64 1615 -32 -808 32 808
150 3810 172 4379 276 7007 79 2019 -40 -1010 40 1010
200 5080 230 5839 368 9343 106 2692 -53 -1346 53 1346
250 6350 287 7299 460 11678 132 3365 -66 -1683 66 1683
300 7620 345 8759 552 14014 159 4039 -79 -2019 79 2019
16:10 Image on a 4:3 Screen
(a) Screen
Size
(b) Projection Distance (c) Image
Height
(d) Vertical Offset
minimum maximum minimum maximum
in. mm in. mm in. mm in. mm in. mm in. mm
30 762 65 1653 104 2644 30 762 -15 -381 15 381
40 1016 76 1928 121 3085 35 889 -18 -445 18 445
50 1270 87 2203 139 3525 40 1016 -20 -508 20 508
60 1524 98 2479 156 3966 45 1143 -23 -572 23 572
70 1778 108 2754 173 4407 50 1270 -25 -635 25 635
80 2032 119 3030 191 4848 55 1397 -28 -699 28 699
90 2286 130 3305 208 5288 60 1524 -30 -762 30 762
100 2540 141 3581 226 5729 65 1651 -33 -826 33 826
120 3048 152 3856 243 6170 70 1778 -35 -889 35 889
150 3810 163 4131 260 6610 75 1905 -38 -953 38 953
200 5080 173 4407 278 7051 80 2032 -40 -1016 40 1016
250 6350 184 4682 295 7492 85 2159 -43 -1080 43 1080
300 7620 195 4958 312 7932 90 2286 -45 -1143 45 1143
NOTE: There is a 3% tolerance among these numbers due to optical component
variations. It is recommended to physically test the projection size and
distance before permanently installing the projector.

16
LS921WU
16:10 Image on a 16:10 Screen
(a) Screen
Size
(b) Projection Distance (c) Image
Height
(d) Vertical Offset
minimum maximum minimum maximum
in. mm in. mm in. mm in. mm in. mm in. mm
30 762 20 521 23 573 16 404 -8 -202 8 202
40 1016 27 694 30 764 21 538 -11 -269 11 269
50 1270 34 868 38 955 26 673 -13 -337 13 337
60 1524 41 1041 45 1146 32 808 -16 -404 16 404
70 1778 48 1215 53 1336 37 942 -19 -471 19 471
80 2032 55 1389 60 1527 42 1077 -21 -538 21 538
90 2286 61 1562 68 1718 48 1212 -24 -606 24 606
100 2540 68 1736 75 1909 53 1346 -26 -673 26 673
120 3048 82 2083 90 2291 64 1615 -32 -808 32 808
150 3810 102 2603 113 2864 79 2019 -40 -1010 40 1010
200 5080 137 3471 150 3818 106 2692 -53 -1346 53 1346
250 6350 171 4339 188 4773 132 3365 -66 -1683 66 1683
300 7620 205 5207 225 5728 159 4039 -79 -2019 79 2019
16:10 Image on a 4:3 Screen
(a) Screen
Size
(b) Projection Distance (c) Image
Height
(d) Vertical Offset
minimum maximum minimum maximum
in. mm in. mm in. mm in. mm in. mm in. mm
30 762 39 982 43 1081 30 762 -15 -381 15.0 381
40 1016 45 1146 50 1261 35 889 -18 -445 17.5 445
50 1270 52 1310 57 1441 40 1016 -20 -508 20.0 508
60 1524 58 1474 64 1621 45 1143 -23 -572 22.5 572
70 1778 64 1637 71 1801 50 1270 -25 -635 25.0 635
80 2032 71 1801 78 1981 55 1397 -28 -699 27.5 699
90 2286 77 1965 85 2161 60 1524 -30 -762 30.0 762
100 2540 84 2129 92 2341 65 1651 -33 -826 32.5 826
120 3048 90 2292 99 2522 70 1778 -35 -889 35.0 889
150 3810 97 2456 106 2702 75 1905 -38 -953 37.5 953
200 5080 103 2620 113 2882 80 2032 -40 -1016 40.0 1016
250 6350 110 2784 121 3062 85 2159 -43 -1080 42.5 1080
300 7620 116 2947 128 3242 90 2286 -45 -1143 45.0 1143
NOTE: There is a 3% tolerance among these numbers due to optical component
variations. It is recommended to physically test the projection size and
distance before permanently installing the projector.

17
Mounting the Projector
NOTE: If you buy a third-party mount, please use the correct screw size. Screw size
can vary depending on the thickness of the mounting plate.
1. To ensure the most secure installation, please use a ViewSonic® wall or ceiling
mount.
2. Ensure the screws used to attach a mount to the projector meet the following
specifications:
• Screw type: M4
• Screw length: 12.8 mm ~ 15.8 mm
151
304
NOTE:
• Avoid installing the projector near a heat source.
• Keep at least a 10 cm gap between the ceiling and the bottom of the
projector.

18
Preventing Unauthorized Use
The projector has several built-in security features to prevent theft, access, or
accidental setting changes.
Using the Security Slot
To help prevent the projector from being stolen, use a security slot locking device
to secure the projector to a fixed object.
Below is an example of setting up a security slot locking device:
NOTE: The security slot can also be used as a safety anchor if the projector is
mounted to the ceiling.

19
Using the Password Function
To help prevent unauthorized access or use, the projector offers a password
security option. The password can be set through the On-Screen Display (OSD)
Menu.
NOTE: Make note of your password, and keep it in a safe place.
Setting a Password
1. Press Menu to open the OSD Menu and go to: SYSTEM > Security Settings and
press Enter.
2. Highlight Power On Lock and select
On by pressing / .
3. As pictured to the right, the four
arrow keys ( , , , ) represent
4 digits (1, 2, 3, 4). Press the arrow
keys to enter a six digit password.
4. Confirm the new password by re-entering the new password. Once the password
is set, the OSD Menu will return to the Security Settings page.
5. Press Exit to leave the OSD Menu.
NOTE: Once set, the correct password must be entered every time the projector is
started.

20
Changing the Password
1. Press Menu to open the OSD Menu and go to: SYSTEM > Security Settings >
Change Password.
2. Press Enter, the message, ‘INPUT CURRENT PASSWORD’ will appear.
3. Enter the old password.
If the password is correct, the message, ‘INPUT NEW PASSWORD’ will
appear.
If the password is incorrect, a password error message will appear for 5
seconds followed by the message, ‘INPUT CURRENT PASSWORD’. You can
try again or press Exit to cancel.
4. Enter a new password.
5. Confirm the new password by re-entering the new password.
6. To leave the OSD Menu, press Exit.
NOTE: The digits being input will display as asterisks (*).
Disabling the Password Function
1. Press Menu to open the OSD Menu and go to: SYSTEM > Security Settings >
Power On Lock.
2. Press / to select Off.
3. The message, “Input Password” will appear. Enter the current password.
If the password is correct, the OSD Menu returns to the Password page with
“Off” shown in the row of Power On Lock.
If the password is incorrect, a password error message will appear for 5
seconds followed by the message, ‘INPUT CURRENT PASSWORD’. You can
try again or press Exit to cancel.
NOTE: Please keep the old password, as you will need it to reactivate the password
function.