BenQ LW550 User manual

Digital Projector
User Manual
LW550 / LH550 V 1.00

2 Warranty and Copyright information
Warranty and Copyright information
Limited warranty
BenQ warrants this product against any defects in material and workmanship, under normal
usage and storage.
Proof of purchase date will be required with any warranty claim. In the event this product is
found to be defective within the warranty period, BenQ's only obligation and your exclusive
remedy shall be replacement of any defective parts (labor included). To obtain warranty
service, immediately notify the dealer from which you purchased the product of any defects.
Important: The above warranty shall be void if the customer fails to operate the product in
accordance with BenQ's written instructions, especially the ambient humidity must be
in-between 10% and 90%, temperature in-between 0°C and 35°C, altitude lower than 4920 feet,
and avoiding to operate the projector in a dusty environment. This warranty gives you specific
legal rights, and you may have other rights which vary from country to country.
For other information, please visit www.BenQ.com.
Copyright
Copyright © 2023 by BenQ Corporation. All rights reserved. No part of this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system or translated into any
language or computer language, in any form or by any means, electronic, mechanical,
magnetic, optical, chemical, manual or otherwise, without the prior written permission of BenQ
Corporation.
Disclaimer
BenQ Corporation makes no representations or warranties, either expressed or implied, with
respect to the contents hereof and specifically disclaims any warranties, merchantability or
fitness for any particular purpose. Further, BenQ Corporation reserves the right to revise this
publication and to make changes from time to time in the contents hereof without obligation to
notify any person of such revision or changes.
*DLP, Digital Micromirror Device and DMD are trademarks of Texas Instruments. Others are
copyrights of their respective companies or organizations.
Patents
Please go to http://patmarking.benq.com/ for the details on BenQ projector patent coverage.

3Table of Contents
Table of Contents
Warranty and Copyright information ...............................................................................2
Important safety instructions .........................................................................................4
Introduction ....................................................................................................................7
Shipping contents ............................................................................................................. 7
Projector exterior view ...................................................................................................... 8
Controls and functions ..................................................................................................... 9
Positioning your projector ............................................................................................12
Choosing a location ........................................................................................................12
Obtaining a preferred projected image size.................................................................. 13
Mounting the projector ................................................................................................... 15
Adjusting the projected image .......................................................................................16
Connection ...................................................................................................................18
Operation .....................................................................................................................20
Starting up the projector .................................................................................................20
Using the menus ............................................................................................................. 21
Securing the projector ....................................................................................................22
Switching input signal ..................................................................................................... 23
Shutting down the projector ...........................................................................................24
Menu operation ............................................................................................................25
Menu System ................................................................................................................... 25
Basic menu...................................................................................................................... 29
Advanced menu .............................................................................................................. 31
Maintenance ................................................................................................................41
Care of the projector .......................................................................................................41
Light source information ................................................................................................ 41
Troubleshooting ...........................................................................................................44
Specifications ..............................................................................................................45
Projector specifications .................................................................................................45
Dimensions ......................................................................................................................46
Timing chart .................................................................................................................... 47

4 Important safety instructions
Important safety instructions
Your projector is designed and tested to meet the latest standards for safety of information
technology equipment. However, to ensure safe use of this product, it is important that you
follow the instructions mentioned in this manual and marked on the product.
1. Please read this manual before you
operate your projector. Save it for future
reference.
2. Do not look straight at the projector lens
during operation. The intense light beam
may damage your eyes.
3. Refer servicing to qualified service
personnel.
4. Always open the lens shutter (if any) or
remove the lens cap (if any) when the
projector light source is on.
5. The light source becomes extremely hot
during operation.
6. In some countries, the line voltage is NOT
stable. This projector is designed to
operate safely within a mains voltage
between 100 to 240 volts AC, but could
fail if power cuts or surges of ±10 volts
occur. In areas where the mains voltage
may fluctuate or cut out, it is
recommended that you connect your
projector through a power stabilizer,
surge protector or uninterruptible power
supply (UPS).
7. Do not block the projection lens with any
objects when the projector is under
operation as this could cause the objects
to become heated and deformed or even
cause a fire. To temporarily turn off the
light source, use the blank function.
8. Do not operate light sources beyond the
rated light source life.

5Important safety instructions
9. Do not place this product on an unstable
cart, stand, or table. The product may fall,
sustaining serious damage.
10. Do not attempt to disassemble this
projector. There are dangerous high
voltages inside which may cause death if
you should come into contact with live
parts.
Under no circumstances should you ever
undo or remove any other covers. Refer
servicing only to suitably qualified
professional service personnel.
11. Do not block the ventilation holes.
- Do not place this projector on a blanket, bedding
or any other soft surface.
- Do not cover this projector with a cloth or any
other item.
- Do not place inflammables near the projector.
If the ventilation holes are seriously
obstructed, overheating inside the
projector may result in a fire.
12. Always place the projector on a level,
horizontal surface during operation.
- Do not use if tilted at an angle of more than 10
degrees left to right, nor at angle of more than 15
degrees front to back. Using the projector when it
is not fully horizontal may cause a malfunction
of, or damage to, the light source.
13. Do not stand the projector on end
vertically. Doing so may cause the
projector to fall over, causing injury or
resulting in damage to the projector.
14. Do not step on the projector or place any
objects upon it. Besides probable physical
damage to the projector, doing so may
result in accidents and possible injury.
15. When the projector is under operation,
you may sense some heated air and odor
from its ventilation grill. It is a normal
phenomenon and not a product defect.

6 Important safety instructions
16. 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's power outlet and call BenQ to
have the projector serviced.
17. This product is capable of displaying
inverted images for ceiling/wall mount
installation.
18. This apparatus must be earthed.
19. Do not place this projector in any of the
following environments.
- Space that is poorly ventilated or confined. Allow
at least 50 cm clearance from walls and free flow
of air around the projector.
- Locations where temperatures may become
excessively high, such as the inside of a car with
all windows rolled up.
- Locations where excessive humidity, dust, or
cigarette smoke may contaminate optical
components, shorten the projector's life span and
darken the image.
- Locations near fire alarms
- Locations with an ambient temperature above
40°C / 104°F
- Locations where the altitudes are higher than
3000 m (10000 feet).
Risk Group 2
1. According to the classification of photobiological safety of light sources and light source
systems, this product is Risk Group 2, IEC 62471-5:2015.
2. Possibly hazardous optical radiation emitted from this product.
3. Do not stare at operating light source. May be harmful to the eyes.
4. As with any bright source, do not stare into the direct beam.
To avoid damaging the DLP chips, never aim a high-power laser beam into the projection lens.
3000 m
(10000 feet)
0 m
(0 feet)

7Introduction
Introduction
Shipping contents
Carefully unpack and verify that you have all of the items shown below. If any of these items are
missing, please contact your place of purchase.
Standard accessories
Replacing the remote control batteries
1. Press and open the battery cover, as illustrated.
2. Remove the old batteries (if applicable) and install
two AAA batteries. Make sure that the positive and
negative ends are positioned correctly, as illustrated.
3. Replace the battery cover until it clicks into place.
Projector Remote control with
batteries Power cord
Quick start guide Warranty card* Regulatory statements
• The supplied accessories will be suitable for your region, and may differ from those illustrated.
• *The warranty card is only supplied in some specific regions. Please consult your dealer for detailed
information.
• Avoid leaving the remote control and batteries in an excessive heat or humid environment like the
kitchen, bathroom, sauna, sunroom or in a closed car.
• 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.
• Never throw the batteries into a fire. There may be danger of an explosion.
• If the batteries are dead 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 from possible battery leakage.

8 Introduction
Projector exterior view
1. Vent (air exhaust)
2. Focus ring and Zoom ring
3. Vent (air inlet)
4. Projection lens
5. IR remote sensor
6. Adjuster feet
7. External control panel
(See Controls and functions on page 9.)
8. Audio output jack
9. HDMI 1 input port
10. HDMI 2 input port
11. USB Type A port with power charging
12. RS-232 control port
13. Kensington anti-theft lock slot
14. AC power jack
15. Wall mount holes
16. Security bar
15
15 16
15
6 6
6
910 1211
5
7
3
6
5
4
2
1
3
8
13
14

9Introduction
Controls and functions
Projector & Remote control
1. POWER
Toggles the projector between standby
mode and on.
ON/ Off
Toggles the projector between standby
mode and on.
2. POWER indicator light/TEMPerature
warning light/LIGHT indicator light
(See Indicators on page 43.)
3. IR remote sensor
4. BACK
Goes back to previous OSD menu, exits
and saves menu settings.
5. Arrow keys ( , , , )
When the On-Screen Display (OSD) menu
is activated, these keys are used as
directional arrows to select the desired
menu items and to make adjustments.
Keystone keys ( , )
Displays the keystone correction page.
Volume keys /
Decreases or increase the projector
volume.
9
7
6
5
1
3
4
10
2
8
All the key presses described in this
document are available on the remote control
or projector.
1
5
13
11
4
7
8
10
12
14
6
9
16
18
15
20
17
19

10 Introduction
6. SOURCE
Displays the source selection bar.
7. ECO BLANK
Used to hide the screen picture.
Do not block the projection lens
from projecting as this could
cause the blocking object to
become heated and deformed or
even cause a fire.
8. OK
Confirms the selected On-Screen Display
(OSD) menu item.
9. AUTO
No function.
10. MENU
Turns on the On-Screen Display (OSD)
menu.
11. Source selection button: PC 1
No function.
12. Source selection button: HDMI
Selects HDMI 1 input source for display.
13. PAGE /PAGE
Operate your display software program (on
a connected PC) which responds to page
up/down commands (like Microsoft
PowerPoint).
14. SMART ECO
Displays the Light Mode menu for
selecting a suitable light source operating
mode.
15. FREEZE
Freezes the projected image.
16. ASPECT
Selects the display aspect ratio.
17. Volume keys /
Decreases or increase the projector
volume.
18. ZOOM+/ZOOM-
Magnifies or reduces the projected picture
size.
19. QUICK INSTALL
Quickly selects several functions to adjust
the projected image and displays the test
pattern.
20. PICTURE MODE
Displays the Picture Mode menu for
selecting a picture mode.

11Introduction
Remote control effective range
The remote control must be held at an angle within 30 degrees perpendicular to the projector's
IR remote control sensor(s) to function correctly. The distance between the remote control and
the sensor(s) should not exceed 8 meters (~ 26 feet).
Make sure that there are no obstacles between the remote control and the IR sensor(s) on the
projector that might obstruct the infra-red beam.
• Operating the projector from the front • Operating the projector from the top
Approx.+30º
Approx.+30º

12 Positioning your projector
Positioning your projector
Choosing a location
Before choosing an installation location for your projector, take the following factors into
consideration:
• Size and position of your screen
• Electrical outlet location
• Location and distance between the projector and the rest of your equipment
You can install your projector in the following ways.
After turning on the projector, go to Advanced Menu - Settings > Projector Installation and
press / to select a setting.
You can also use QUICK INSTALL on the remote control to access this menu.
1. Front Table
Select this location with the projector placed
on the table in front of the screen. This is the
most common way to position the projector
for quick setup and portability.
2. Rear Table
Select this location with the projector placed
on the table behind the screen. Note that a
special rear projection screen is required.
3. Front Ceiling
Select this location with the projector
suspended upside-down in front of the screen.
Purchase the BenQ Projector Ceiling/Wall
Mount Kit from your dealer to mount your
projector.
4. Rear Ceiling
Select this location with the projector
suspended upside-down from behind the
screen. Note that a special rear projection
screen and the BenQ Projector Ceiling/Wall
Mount Kit are required for this installation
location.

13Positioning your projector
Obtaining a preferred projected image size
The distance from the projector lens to the screen, the zoom setting (if available), and the video
format each factors in the projected image size.
Projection dimensions
• The screen aspect ratio is 16:10 and the projected picture is in a 16:10 aspect ratio
LW550
For example, if you are using a 120-inch screen, the recommended projection distance is 4200
mm.
If your measured projection distance is 5200 mm, the closest match in the "Projection distance
(mm)" column is 5250 mm. Looking across this row shows that a 150'' (about 3.8 m) screen is
required.
Screen size Projection distance (mm)
Offset (mm)
Diagonal
H (mm) W (mm)
Min distance
(with max
zoom)
Average
Max distance
(with min
zoom)
Inch mm
30 762 404 646 1002 1050 1098 0
40 1016 538 862 1335 1400 1465 0
50 1270 673 1077 1669 1750 1831 0
60 1524 808 1292 2003 2100 2197 0
70 1778 942 1508 2337 2450 2563 0
80 2032 1077 1723 2671 2800 2929 0
90 2286 1212 1939 3005 3150 3295 0
100 2540 1346 2154 3339 3500 3662 0
110 2794 1481 2369 3672 3850 4028 0
120 3048 1615 2585 4006 4200 4394 0
130 3302 1750 2800 4340 4550 4760 0
140 3556 1885 3015 4674 4900 5126 0
150 3810 2019 3231 5008 5250 5492 0
160 4064 2154 3446 5342 5600 5859 0
170 4318 2289 3662 5676 5950 6225 0
180 4572 2423 3877 6009 6300 6591 0
190 4826 2558 4092 6343 6650 6957 0
200 5080 2692 4308 6677 7000 7323 0
H
WProjection distance
Center of lens
Screen
16:10 Screen diagonal
Offset

14 Positioning your projector
LH550
• The screen aspect ratio is 16:9 and the projected picture is in a 16:9 aspect ratio
For example, if you are using a 120-inch screen, the recommended projection distance is 4158
mm.
If your measured projection distance is 3000 mm, the closest match in the "Projection distance
(mm)" column is 3118 mm. Looking across this row shows that a 90'' (about 2.3 m) screen is
required.
Screen size Projection distance (mm)
Offset (mm)
Diagonal
H (mm) W (mm)
Min distance
(with max
zoom)
Average
Max distance
(with min
zoom)
Inch mm
30 762 374 664 990 1039 1089 11
40 1016 498 886 1319 1386 1452 15
50 1270 623 1107 1649 1732 1815 19
60 1524 747 1328 1979 2079 2178 22
70 1778 872 1550 2309 2425 2541 26
80 2032 996 1771 2639 2772 2905 30
90 2286 1121 1992 2969 3118 3268 34
100 2540 1245 2214 3299 3465 3631 37
110 2794 1370 2435 3628 3811 3994 41
120 3048 1494 2657 3958 4158 4357 45
130 3302 1619 2878 4288 4504 4720 49
140 3556 1743 3099 4618 4850 5083 52
150 3810 1868 3321 4948 5197 5446 56
160 4064 1992 3542 5278 5543 5809 60
170 4318 2117 3763 5608 5890 6172 64
180 4572 2241 3985 5937 6236 6535 67
190 4826 2366 4206 6267 6583 6898 71
200 5080 2491 4428 6597 6929 7261 75
To optimize your projection quality, we suggest doing the projection by referring to the values listed in the
non-gray rows.
All measurements are approximate and may vary from the actual sizes.
BenQ recommends that if you intend to permanently install the projector, you should physically test the
projection size and distance using the actual projector in situ before you permanently install it, so as to
make allowance for this projector's optical characteristics. This will help you determine the exact mounting
position so that it best suits your installation location.
H
WProjection distance
Center of lens
Screen
16:9 Screen diagonal
Offset

15Positioning your projector
Mounting the projector
If you intend to mount your projector, we strongly recommend that you use a proper fitting
BenQ projector mounting kit and that you ensure it is securely and safely installed.
If you use a non-BenQ brand projector mounting kit, there is a safety risk that the projector may
fall down due to an improper attachment through the use of the wrong gauge or length screws.
Before mounting the projector
• Purchase a BenQ projector mounting kit from the place you purchased your BenQ projector.
• BenQ recommends that you also purchase a separate Kensington lock compatible security
cable and attach it securely to both the Kensington lock slot on the projector and the base of
the mounting bracket. This will perform the secondary role of restraining the projector should
its attachment to the mounting bracket become loose.
• Ask your dealer to install the projector for you. Installing the projector on your own may cause
it to fall and result in injury.
• Take necessary procedures to prevent the projector from falling off such as during an
earthquake.
• The warranty doesn’t cover any product damage caused by mounting the projector with a
non-BenQ brand projector mounting kit.
• Consider the surrounding temperature where the projector is ceiling/wall mounted. If a heater
is used, the temperature around the ceiling/wall may be higher than expected.
• Read the user manual for the mounting kit about the range of torque. Tightening with torque
exceeding the recommended range may cause damage to the projector and subsequently
falling off.
• Make sure the power outlet is at an accessible height so that you can easily shut down the
projector.
Ceiling/Wall mount installation diagram
Ceiling/Wall mount screw: M4
(Max L = 25 mm; Min L = 20 mm)
Unit: mm
75146
100 75

16 Positioning your projector
Adjusting the projected image
Adjusting the projection angle
If the projector is not placed on a flat surface or
the screen and the projector are not
perpendicular to each other, the projected
image becomes trapezoidal. You can screw the
adjuster feet to fine-tune the horizontal angle.
To retract the feet, screw the adjuster feet in a
reverse direction.
Fine-tuning the image size and clarity
Correcting keystone
Keystoning refers to the situation where the projected image becomes a trapezoid due to
angled projection.
To correct this, besides adjusting the height of the projector, if you want the projector to
automatically correct image keystoning, be sure the Auto Vertical Keystone function in the
Advanced Menu - Display menu is On.
Or you will need to manually correct it following these steps.
1. Do one of the following steps to display the keystone correction page.
• Press / on the projector or remote control.
• Press QUICK INSTALL on the remote control. Press to highlight 2D Keystone and press
OK.
• Go to Advanced Menu - Display > 2D Keystone and press OK.
Do not look into the lens while the light source is on. The strong light from the light source may cause
damage to your eyes.
Adjust the projected image to the size that you
need using the zoom ring.
Sharpen the image by rotating the focus ring.

17Positioning your projector
2. After the 2D Keystone correction page displays. To correct keystoning at the top of the
image, use . To correct keystoning at the bottom of the image, use . To correct
keystoning at the right side of the image, use . To correct keystoning at the left side of
the image, use .
Press . Press .
Press . Press .

18 Connection
Connection
When connecting a signal source to the projector, be sure to:
1. Turn all equipment off before making any connections.
2. Use the correct signal cables for each source.
3. Ensure the cables are firmly inserted.
• In the connections above, some cables may not be included with the projector (see Shipping contents on
page 7). They are commercially available from electronics stores.
• The connection illustrations are for reference only. The rear connecting jacks available on the projector
vary with each projector model.
• Many notebooks do not turn on their external video ports when connected to a projector. Usually a key
combo like FN + function key with a monitor symbol turns the external display on/off. Press FN and the
labeled function key simultaneously. Refer to your notebook's documentation to find your notebook's key
combination.
• If the selected video image is not displayed after the projector is turned on and the correct video source
has been selected, check that the video source device is turned on and operating correctly. Also check
that the signal cables have been connected correctly.
2
1
1
3
Notebook or
desktop computer
Audio cable
HDMI cable
USB cable
1
2
3
Speakers
A/V device

19Connection
Connecting audio
The projector has built-in mono speaker(s) which are designed to provide basic audio
functionality accompanying data presentations for business purposes only. They are not
designed for, nor intended for stereo audio reproduction use as might be expected in home
theater or home cinema applications. Any stereo audio input (if provided), is mixed into a
common mono audio output through the projector speaker(s).
The built-in speaker(s) will be muted when the AUDIO OUT jack is connected.
• The projector is only capable of playing mixed mono audio, even if a stereo audio input is connected.
• If the selected video image is not displayed after the projector is turned on and the correct video source
has been selected, check that the video source device is turned on and operating correctly. Also check
that the signal cables have been connected correctly.

20 Operation
Operation
Starting up the projector
1. Plug the power cord. Turn on the power outlet switch
(where fitted). The power indicator on the projector
lights orange after power has been applied.
2. Press on the projector or on the remote
control to start the projector. The power indicator
flashes green and stays green when the projector is
on.
The start up procedure takes about 10 seconds. In
the later stage of start up, a startup logo is projected.
(If necessary) Rotate the focus ring to adjust the image clearness.
3. If the projector is activated for the first time, select
your OSD language following the on-screen
instructions.
4. If you are prompted for a password, press the arrow
keys to enter a 6-digit password. See Utilizing the
password function on page 22.
5. Switch all of the connected equipment on.
6. The projector will search for input signals. The
current input signal being scanned appears. If the
projector does not detect a valid signal, the message “No Signal” will continue displaying
until an input signal is found.
You can also press SOURCE to select your desired input signal. See Switching input signal
on page 23.
• Please use the original accessories (e.g. power cord) to avoid possible dangers such as electric shock
and fire.
• If the projector is still hot from previous activity, it will run the cooling fan for approximately 90 seconds
before energizing the light source.
• The Setup Wizard screenshots are for reference only and may differ from the actual design.
• If the frequency/resolution of the input signal exceeds the projector's operating range, you will see the
message “Out of Range” displayed on the background screen. Please change to an input signal which is
compatible with the projector's resolution or set the input signal to a lower setting. See Timing chart on
page 47.
• If no signal is detected for 3 minutes, the projector automatically enters saving mode.