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.
Safety Instructions
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.
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 fluctuate or cut out, it is
recommended that you connect
your projector through a power
stabilizer, surge protector or
uninterruptible power supply
(UPS).
3.Refer servicing to qualified
service personnel.
Important safety instructions3
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 fire. To
temporarily turn off the lamp, press
ECO BLANK on the remote
control.
Safety Instructions (Continued)
6.The lamp becomes extremely hot
during operation. Allow the
projector to cool for approximately
45 minutes prior to removing the
lamp assembly for replacement.
7.Do not operate lamps beyond the
rated lamp life. Excessive operation
of lamps beyond the rated life could
cause them to break on rare
occasions.
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 . Ther e are dangerous high
voltages inside which may cause
death if you should come into
contact with live parts. The only
user serviceable part is the lamp
which has its own removable cover.
Under no circumstances should you
ever undo or remove any other
covers. Refer servicing only to
suitably qualified professional
service personnel.
8.Never replace the lamp assembl y or
any electronic components unless
the projector is unplugged.
11. 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.
Important safety instructions4
Safety Instructions (Continued)
3000 m
(10000 feet)
0 m
(0 feet)
12. 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,
shortening the projector's life span
and darkening 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).
13. 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 f i re.
14. 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
lamp.
Important safety instructions5
Safety Instructions (Continued)
15. 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.
16. 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.
17. 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.
Important safety instructions6
18. 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 fitting 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.
Hg - Lamp contains mercury. Mana ge in
accordance with local disposal la ws. See
www.lamprecycle.org.
Introduction
Projector features
The projector offers the following features
• SmartEco™ starts your dynamic power saving
The SmartEco™ technology offers a new way of operating the projector lamp system
and saves lamp power up to 30% depending on the content brightness level.
• Interactive capability
Extend the interactive function with optional PointWrite module.
• Vertical 2% lens shift (No available in MH856UST+)
Optimize the installation flexibility.
• Corner fit
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
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 keypad or 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.
• Quick Cooling, Auto Power Off, Signal Power On, Direct Power OnQuick Cooling function speeds up the cooling process when turning off the
projector. 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.
•The lamp brightness will decline over time and may vary within the lamp manufacturers
specifications. This is normal and expected behavior.
®
, and AMX supported
Introduction7
Shipping contents
Quick Sta
rt G
u
ide
D
ig
ital
Pr
o
jec
t
o
r
MW
8
5
5
U
S
T
+
/
MH
8
5
6
U
S
T
+
Carefully unpack and ve rify that you ha v e all of the items shown below. If any of these items
are missing, please contact your place of purchase.
Standard accessories
The supplied accessories will be suitable for your region, and may differ from those illustrated.
Projector with wall mount plateRemote control with battery**
Power cordVGA cableWall mount kit (WM04G4) &
user manual
Hex key (2.5mm)***Quick start guideWarranty card*Installation chart for
wallmount
Optional accessories
1.Spare lamp kit
2.3D glasses
3.Wireless dongle: QCastMirror (QP20)
*The warranty card is only supplied in some specific regions. Please consult your dealer for
detailed information.
**There is no Laser function of the remote for Japan region.
***Hex key not available in MH856UST+ model.
5.External control panel
(See "Projector" on page 11 for
details.)
6.Vent (cool air intake)
7.Lens shift (No available in
MH856UST+)
8.Projection lens
9.Front adjuster foot
10. Front IR remote sensor
11. HDMI-1 input jack
12. HDMI-2 input jack
13. RGB signal output jack
14. PC input jack
15. VIDEO input jack
16. USB Type A port
17. RJ45 LAN input jack
18. PointWrite port (PointWrite kit is
required)
19. Front adjuster foot
20. Kensington anti-theft lock slot
21. USB Type B port (For service
download)
22. Audio (L/R) input jack
23. RS-232 control port
24. Rear adjuster foot
25. Audio input jack
26. Audio output jack
27. AC power cord inlet
For setting the PointWrite kit on projector, Please find PointWrite manaual in the kit box
you purchase.
Introduction9
28. Wall mount plate
Bottom side
28
1919
24
Introduction10
Controls and functions
2
4
5
13
14
3
9
12
1
10
11
6
7
8
Projector
8.MODE/ENTER
Selects an available picture setup mode.
See "Selecting a picture mode" on page
37 for details.
Enacts the selected On-Screen Display
(OSD) menu item.See "Using the menus"
on page 30 for details.
9.► Right/ Increase volume level
Increases volume. See "Adjusting the
sound level" on page 44 for details.
When the On-Screen Display (OSD)
menu is activated, the #4, #6, #9, and
#11 keys are used as directional arrows
to select the desired menu items and to
1.FOCUSRing
Used to adjust the projected image
appearance. See "Fine-tuning the image
size and clarity" on page 27 for details.
2.Lens Shift
Used Hex Key to adjust the lens shift
function.
3.MENU/EXIT
Turns on the On-Screen Display (OSD)
menu. Goes back to previous OSD menu,
exits and saves menu settings.
See "Using
the menus" on page 30 for details.
4.Keystone/Arrow keys (/▲ Up)
Manually corrects distorted images
resulting from an angl ed projection.
5. SOURCE
Displays the source selection bar. See
"Switching input signal" on page 33 for
details.
6.◄ Left/ Decrease volume level
Decreases volume. See "Adjusting the
sound level" on page 44 for details.
7.POWER indicator light
Lights up or flashes when the projector is
under operation. See "Indicators" on page
73 for details.
Introduction11
make adjustments. See "Using the menu s"
on page 30 for details.
10. AUTO
Automatically determines the best
picture timings for the displayed image.
See "Auto-adjusting the image" on page
27 for details.
11. Keystone/Arrow keys (/▼ Down)
Manually corrects distorted images
resulting from an angled projection.
12. POWER
Toggles the projector between standby
mode and on.
See "Starting up the projector" on page
26 and "Shutting down the pr ojector" on
page 52 for details.
13. LAMP indicator light
Indicates the status of the lamp. Lights up
or flashes when the lamp has developed a
problem. See "Indicators" on page 73 for
details.
14. TEMPerature indicator light
Lights up red if the projector's
temperature becomes too high. See
"Indicators" on page 73 for details.
Remote Control
5
6
12
17
18
20
23
14
1
2
3
4
7
15
11
22
16
10
19
21
3
13
8
9
7.LASER (Not available in Japan)
Emits visible laser pointer light for
presentation purposes.
8.MHL control buttons
(Not available in this modle)
9.ZOOM+/ZOOM-
Magnifies or reduces the projected
picture size.
10. ASPECT
Selects the display aspect ratio.
11. FREEZE
Freezes the projected image.
12. NETWORK SETTING
Displays the Network Settings OSD
menu.
13. Numeric buttons
Enters numbers in network settings.
Numeric buttons 1, 2, 3, 4 cannot be
pressed when asked to enter password.
14. NETWORK
Selects Network Display as the input
signal source.
15. AUTO
Automatically determines the best
1. ON / OFF
Toggles the projector between standby
mode and on.
2.Source selection buttons
(Computer 2, S-Video and Network
are not available is this model)
Selects an input source for display.
3.Keystone/Arrow keys (/▲ Up,
/▼ Down)
Manually corrects distorted images
resulting from an angled projection.
4.MENU/EXIT
Turns on the On-Screen Display (OSD)
menu. Goes back to previous OSD menu,
exits and saves menu settings.
5.◄ Left/
Decreases the projector volume.
6.ECO BLANK
Used to hide the screen picture.
picture timings for the displayed image.
16. ► Right/
Increases the projector volume.
When the On-Screen Display (OSD)
menu is activated, the #3, #5, and #16
keys are used as directional arrows to
select the desired menu items and to
make adjustments.
17. MODE/ENTER
Selects an available picture setup mode.
Activates the selected On-Screen Display
(OSD) menu item.
Introduction12
18. SOURCE
Displays the source selection bar.
19. PAGE +/PAGE -
Operate your display software program
(on a connected PC) which responds to
page up/down commands (like Microsoft
PowerPoint).
20. MIC/VOL +/MIC/VOL -
The function is not available on this
projector.
21. MUTE
Toggles projector audio between on and
off.
22. SMART ECO
Switch the light mode between Eco/
Normal and SmartEco.
23. QUICK INSTALL
Displays the Quick Install OSD menu.
Operating the LASER pointer
The Laser Pointer is a
presentation aid for
professionals. It emits a
beam of red light when you
press it.
The laser beam is visible. It
is necessary to press and
hold LASER for continuous
output.
Do not look into the
laser light window or shine the laser light
beam on yourself or others. See the
warning messages on the back of the
remote control prior to using it.
The laser pointer is not a toy. Parents should
be mindful of the dangers of laser energy and
keep this remote control out of the reach of
children.
Introduction13
Replacing the remote control battery
A
p
p
r
o
x.
±
3
0
°
1.To open the battery cover, turn the remote control over to view its back, push on
the finger grip on the cover and slide it up in the direction of the arrow as illustrated.
The cover will slide off.
2.Remove any existing batteries ( if necessary) and install two AAA batteries observing
the battery polarities as indicated in the base of the battery compartment. Positive
(+) goes to positive and negative (-) goes to negative.
3.Refit the cover by aligning it with the base and sliding it back down into position. Stop
when it clicks into place.
•Avoid excessive heat and humidity.
•There may be battery damage if the battery is incorrectly replaced.
•Replace only with the same or equivalent type recommended by the battery manufacturer.
•Dispose of the used battery according to the battery manufacturer’s instructions.
•Never throw a battery into a fire. There may be danger of an explosion.
•If the battery is dead or if you will not be using the remote control for a long time, remove
the battery to prevent damage to the remote control from possible battery leakage.
Remote control effective range
Infra-Red (IR) remote control sensor is located on
the front of the projector. The remote control must
be held at an angle within 30 degrees perpendicular
to the projector's IR remote control sensor to
function correctly. The distance between the
remote control and the sensor should not exceed8
meters (~ 26 feet).
Make sure that there are no obstacles between the
remote control and the IR sensor on the projector
that might obstruct the infra-red beam.
Introduction14
Positioning your projector
Using the Quick Install
The projector provides a hot key to set Projector Installation, Te st Pattern, and Keystone quickly.
Press Quick Install on the remote control and press ▲/▼ to select:
• Projector Installation: See
• Test Pattern: See
• Keystone: See
"Using the test pattern" on page 45
"Correcting 2D Keystone" on page 28
"Positioning your projector" on page 15
.
.
.
1. Choosing a location
Your projector is designed to be installed in one of four possible installation locations:
Front WallRear TableFront TableRear Wall
2. Use the test pattern
3. Correct the image
2D Keystone correction
Corner fit correction
Positioning your projector15
Digital shrink and shift
Set up your screen via Quick Install hotk e y on remote, you can also go to the SYSTEM SETUP: Basic > Projector Installation menu after turning on the projector.
Your room layout or personal preference will dictate which installation location you select.
Take into consideration the size and position of your screen, the location of a suitable
power outlet, as well as the location and distance between the projector and the rest of
your equipment.
Obtaining a preferred projected image size
1.Wall mount
2.Dimension (include projector and wall mount)
Positioning your projector16
Projection dimensions
W
h
D
H
V
Refer to "Dimensions" on page 22 for the center of lens dimensions of this projector
before calculating the appropriate position.
To install the PointWrite Touch module, download the file “installation guide for PointWrite
Touch module” from the BenQ website.
MW855UST+
The screen aspect ratio is 16:10 and the projected picture is 16:10.
There is 5% tolerance among these numbers due to optical component variations. BenQ
recommends that if you intend to permanently install the projector, you should physically test
the projection size and distance using the actual projector 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.
It is recommended to adjust focus 15 minutes after powering on due to the slight shifting of the
lens from temperature changing.
Projection
distance
(D)
Offset (H)
Scale
parameter
Distance
between
Wall plate
projection
screen (V)
&
Positioning your projector18
Limited lens shift specification
Hx±2% Hx±2%
Hx±2% Hx±2%
(No available in MH856UST+)
To shift up the projection image, twist the
adjuster counter clockwisre.
Positioning your projector19
To shift down the projection image, twist
the adjuster clockwisre.
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
• Use BenQ Projector Wall Mounting Kit come with the package. Please refer to the
User manual in the box of wall mount kit for installation details.
• 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.
• T ake 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 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.
Install the projector on the projector wall mount
1.Slide the projector into the wall mount.
Positioning your projector20
2.Adjust the Vertical Tilt/Horizontal Roll/Horizontal Rotation to adjust screen
A
B
A
B
A
B
A
B
A
B
A
B
Adjustment
directions
Adjustment directions
Adjustment directions
Adjustment buttons
Adjustment buttons
Adjustment buttons
A
B
A
B
A
B
alignment and image position.
3.Adjust the Forward/Backward Slide to reduce/enlarge the image.
Positioning your projector21
Dimensions
233.8
130.2
373.3
Wall Mount Installation
Unit: mm
287.5
206.9
287.5 mm (W) x 206.9 mm (H) x 373.3 mm (D)
247.01
135.51
43.25
149.25
287.50
OPTICAL AXIS
206.25
255.25
141
Regulating Range
0~30
3.0
195.0
137.0
55.055.0
12.5
170.0
7.0
Regulating Range
0~40
235.0
195.0
360~665
Positioning your projector22
Connection
10
54
21
33
5
67
19108
5
11
Notebook or desktop computer
A/V device
Speakers
Monitor
(VGA)(DVI)or
PointWrite kit
Touch
module
Smart devices
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 shown below, some cables may not be included with the projector (see
"Shipping contents" on page 8). They are commercially available from electronics stores.
1.VGA cable
2.VGA to DVI-A cable
3.HDMI cable
4.Component Video to VGA (D-Sub)
adapter cable
5.Audio cable
6.Video cable
Many notebooks do not turn on their external video ports when connected to a projector.
Usually a key combo like FN + F3 or CRT/LCD key turns the external display on/off. Locate a
function key labeled CRT/LCD or a function key with a monitor symbol on the notebook. Press
FN and the labeled function key simultaneously. Refer to your notebook's documentation to find
your notebook's key combination.
7.Audio L/R cable
8.USB cable
9.USB cable (B to A type)
10. USB cable (A to micro B type):
Connect to PointWrite Touch
module or connect to the HDMI
dongle for power supply
11. HDMI dongle
(QCast Mirror, etc.)
Connection23
Connecting video source devices
You need only connect the projector to a video source device using just one of the
connecting methods, however each provides a different level of video quality. The method
you choose will most likely depend upon the availability of matching terminals on both the
projector and the video source device as described below:
Termin al nam eTerminal appearancePicture quality
HDMIBest
Component VideoBetter
VideoNormal
Connecting audio
The projector has two built-in speaker 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.
The built-in speaker will be muted when the AUDIO OUT jack 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.
Connecting smart devices
The projector can project the content directly from a smart device by using a wireless
dongle.
HDMI wireless dongle (e.g. BenQ QCastMirror)
• Connect the dongle to HDMI 1 or HDMI 2 and USB TYPE-A ports on the projector
and switch the input signal to HDMI 1 or HDMI 2.
Connection24
Playing sound through the projector
You can make use of the projector speaker in your presentations, and also connect
separate amplified speakers to the AUDIO OUT socket of the projector.
If you have a separate sound system, you will most likel y want to connect the audio output
of your Video source device to that sound system, instead of to the audio projector.
Once connected, the audio can be controlled by the projector On-Screen Display (OSD)
menus.
The table below describes the connection methods for different devices, and where the
sound is from.
DeviceComputer/PCComponent/VideoHDMI
Audio input portAUDIO IN (mini jack)AUDIO (L/R)HDMI
The projector can pla y the
sound from...
Audio output portAUDIO OUTAUDIO OUTAUDIO OUT
The selected input signal determines which sound will be played by the projector speaker, and
which sound will be output from the projector when AUDIO OUT is connected. If you select the
COMPUTER/PC signal, the projector can play the sound r eceived fr om A UDIO IN mini jack. If you
select the COMPONENT/VIDEO signal, the projector can play the sound received from AUDIO
AUDIO IN (mini jack)AUDIO (L/R)HDMI
(L/R).
Connection25
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