BenQ LW855UST User manual

LW855UST / LH856UST
V1.00

English
2Warranty 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 specic 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 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 specically disclaims any warranties, merchantability or tness
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..

Table of Contents
Warranty and Copyright information ......................................... 2
Important safety instructions....................................................... 4
Notice on laser ............................................................................................................................................. 8
Introduction.................................................................................... 9
Projector features ........................................................................................................................................ 9
Shipping contents ......................................................................................................................................... 10
Projector exterior view .............................................................................................................................. 11
Controls and functions................................................................................................................................ 12
Positioning your projector ............................................................ 15
Using the Quick Install................................................................................................................................ 15
Obtaining a preferred projected image size........................................................................................... 17
Limited lens shift specication
(No available in LH856UST)...................................................................................................................... 18
Mounting the projector .............................................................................................................................. 19
Dimensions .................................................................................................................................................... 21
Connection ..................................................................................... 22
Connecting video source devices............................................................................................................. 23
Connecting audio ......................................................................................................................................... 23
Connecting smart devices .......................................................................................................................... 23
Playing sound through the projector ....................................................................................................... 24
Operations...................................................................................... 25
Starting up the projector............................................................................................................................ 25
Adjusting the projected image................................................................................................................... 26
Using the menus ........................................................................................................................................... 29
Securing the projector ................................................................................................................................ 30
Switching input signal................................................................................................................................... 31
Installing PointWrite module on projector to use interaction function ......................................... 32
Shutting down the projector ..................................................................................................................... 33
Menu operation.............................................................................. 34
Menu System ................................................................................................................................................. 34
Maintenance ................................................................................... 50
Care of the projector.................................................................................................................................. 50
Indicators........................................................................................................................................................ 51
Troubleshooting ............................................................................. 52
Troubleshooting............................................................................................................................................ 52
Specications.................................................................................. 53
Projector specications .............................................................................................................................. 53
Timing table ................................................................................................................................................... 54
RS232 command control ............................................................................................................................ 58
PJLink............................................................................................................................................................... 65

English
4Important 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 qualied service
personnel.
4. 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 uctuate or cut out, it is
recommended that you connect your
projector through a power stabilizer,
surge protector or uninterruptible
power supply (UPS).
5. 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 re. To temporarily turn off the
light source, press ECO BLANK on the
remote control.

English
5
Important safety instructions
9. 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 qualied
professional service personnel.
10. 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.
11. Do not place this projector in any of the
following environments.
- Space that is poorly ventilated or conned. Allow
at least 50 cm clearance from walls and free ow
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, shortening the projector's life span
and darkening the image.
6. Do not operate projector beyond the rated
light source life, Excessive operation of light
source beyond the rated life could cause
them to break on rare occasions.
7. Never replace any electronic components
unless the projector is unplugged.
8. Do not place this product on an unstable
cart, stand, or table. The product may fall,
sustaining serious damage.

English
6Important safety instructions
- Locations near re alarms
- Locations with an ambient temperature above
40°C / 104°F
- Locations where the altitudes are higher than
3000 m (10000 feet).
3000 m
(10000 feet)
0 m
(0 feet)
12. 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 inammables near the projector.
If the ventilation holes are seriously
obstructed, overheating inside the projector
may result in a re.
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. 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 wall socket and call BenQ to have
the projector serviced.

English
7
Important safety instructions
16. This product is capable of displaying inverted
images for wall mount installation.
Use only BenQ's Wall Mount Kit for
mounting the projector and ensure it is
securely installed.
Wall mounting the projector
We want you to have a pleasant experience
using your BenQ projector, so we need to bring
this safety matter to your attention to prevent
possible damage to person and property.
If you intend to mount your projector on the
wall, we strongly recommend that you use a
proper tting BenQ projector wall mount kit and
that you ensure it is securely and safely installed.
If you use a non-BenQ brand projector wall
mount kit, there is a safety risk that the projector
may fall from the wall due to an improper
attachment through the use of the wrong gauge
or length screws.
You can purchase a BenQ projector wall mount
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 wall mount bracket. This will perform
the secondary role of restraining the projector
should its attachment to the mounting bracket
become loose.

English
8Important safety instructions
Notice on laser
Caution – use of controls or adjustments or performance of procedures other than those specied
herein may result in hazardous radiation exposure.
Do not point laser or allow laser light to be directed or reected toward other people or
reective objects.
Direct or scattered light can be hazardous to eyes and skin.
There is a potential hazard of eye exposure to laser radiation if the included instructions are not
followed.
Do not allow to look into the projector beam at any distance from the projector. An adult should
supervise the children to prevent exposure risks.
Check that there is no one looking at the lens, when using the remote control for starting the
projector.
Do not look at the projected light using optical devices(binoculars, telescopes, magnifying glasses,
reectors, etc).
Laser class
This Laser Product is designated as Class 1 and CONSUMER LASER PRODUCT: EN 50689:2021
during all procedures of operation and complies with IEC 60825-1:2014 and
EN 60825-1:2014/A11:2021.
Laser parameters
Wavelength 449nm - 461nm (Blue)
Mode of operation Pulsed, due to frame rate
Pulse width 1.15ms
Pulse repetition rate 120Hz
Maximum laser energy 0.76mJ
Total internal power >100w
Apparent source size >10mm, at lens stop
Divergence >100 mili Radian

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9
Introduction
Introduction
Projector features
The projector offers the following features
• Interactive capability
Extend the interactive function with optional PointWrite module.
• Vertical 2% lens shift (No available in LH856UST)
Optimize the installation exibility.
• Corner t
Correct each distorted corner to get a perfect rectangular image.
• Filter Free
Filter free design to lower maintenance and operating costs.
• Network Control
Integrated RJ45 connector for wired network control allowing management of projector status
from a computer using a web browser.
Enable Network Standby mode <2W.
• Crestron RoomView®, and AMX supported
The projector supports Crestron eControl and RoomView and AMX allowing you to control
and manage equipment from a remote computer via LAN connection.
• One-key auto-adjustment
Pressing AUTO on the remote control to show the best picture quality immediately.
• Built-in 10W x 2 speaker(s)
Built-in 10W x 2 speaker(s) providing stereo audio when an audio input is connected.
• Auto Power Off, Signal Power On, Direct Power On
Auto Power Off function allows the projector to turn off automatically if no input signal
is detected after a set period of time. Signal Power On function turns on your projector
automatically once detecting the signal input and Direct Power On boots up the projector
automatically when the power is connected.
• The apparent brightness of the projected image will vary depending on the ambient lighting conditions,
selected input signal contrast/brightness settings, and is directly proportional to projection distance.

English
10 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
Projector with wall mount plate Remote control with battery
Power cord VGA cable Wall mount kit (WM04G4) &
user manual
Hex key (2.5mm)** Quick start guide Warranty card* Installation chart for
wallmount
• The supplied accessories will be suitable for your region, and may differ from those illustrated.
•*The warranty card is only supplied in some specic regions. Please consult your dealer for detailed
information.
• **Hex key not availabke in LH856UST model.
Optional accessories
1. 3Dglasses
2. Wireless dongle: QCastMirror (QP30)
3. PointWrite kit (PW30U/PW31U)
4. PointWrite Touch module (PT20)