Copyright 2017 by BenQ Corporation (Shanghai). All rights reserved. No part of this publication may
English
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 (Shanghai).
All other logos, products or company names mentioned in this manual may be the registered trademarks
or copyrights of their respective companies, and are used for reference only.
Disclaimer
BenQ Corporation (Shanghai) makes no representations or warranties, either expressed or implied, with
respect to the contents hereof and specically disclaims any warranties, merchantability or tness for any
particular purpose. Further, BenQ Corporation (Shanghai) 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.
This user manual strives its best to provide the latest and accurate information to consumers. Therefore,
all contents are subject to change without notice. Please visit http://www.benq.com for the latest version
of this manual.
Statement for hyper links and third-party websites
BenQ Corporation is not responsible for the content of the websites or of similar resources, which
are maintained and controlled by third parties, that may be linked from this product. Providing links to
those websites or to similar resources does not mean that BenQ Corporation makes any warranty or
representation to their content by expression or by implication.
Any third party content or service preinstalled in this product is provided “as is”. BenQ Corporation
does not explicitly or implicitly guarantees contents or services provided by the third party. BenQ
Corporation does not warrant or guarantee that the content or services provided by third parties
are accurate, effective, most up-to-date, legal, or complete. Under no circumstances shall BenQ
Corporation be liable for the content or services provided by third parties including their negligence.
Services provided by third parties may be terminated temporarily or permanently. BenQ Corporation
does not warrant or guarantee that the content or services provided by third parties are in good
condition at any time, and is not liable for the termination of the said content and services. In addition,
BenQ Corporation is not involved in any transactions you conduct in the websites or similar resources
maintained by third parties. You should contact the content or service providers for any questions,
concerns, or disputes.
Laser type ............................................................................................................................................. 7
The projector does not turn on. ................................................................................................... 67
No picture ..........................................................................................................................................67
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.
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Safety Instructions
1. Do not look straight at the projector lens during operation. The intense light beam may damage your
2. Always open the lens shutter or remove the lens cap when the projector lamp is on.
3. In some countries, the line voltage is NOT stable. This projector is designed to operate safely within a
4. Do not block the projection lens with any objects when the projector is under operation as this
5. Do not place this product on an unstable cart, stand, or table. The product may fall, sustaining serious
6. Do not attempt to disassemble this projector. There are dangerous high voltages inside which may
7. Do not place this projector in any of the following environments.
8. Do not block the ventilation holes.
If the ventilation holes are seriously obstructed, overheating inside the projector may result in a re.
eyes.
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).
could cause the objects to become heated and deformed or even cause a re. Press ECO BLANK
on the remote control to turn off the lamp temporarily.
damage.
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 qualied professional service personnel.
y Space that is poorly ventilated or conned. Allow at least 50 cm clearance from walls and free
ow of air around the projector.
y Locations where temperatures may become excessively high, such as the inside of a car with all
windows rolled up.
y Locations where excessive humidity, dust, or cigarette smoke may contaminate optical
components, shortening the projector's life span and darkening the image.
y Locations near re alarmsy Locations with an ambient temperature above 40°C / 104°Fy Locations where the altitudes are higher than 5000 m (16400 feet).
y Do not place this projector on a blanket, bedding or any other soft surface.y Do not cover this projector with a cloth or any other item.y Do not place inammables near the projector.
6
9. 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.
10. 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.
This device comes with the three-pin power plug with earth contact. Do
not remove the earth contact pin. As a safety function, this power plug
Do not remove it.
may only be inserted into the power socket with earth wire. Contact the
electrician if the plug cannot be inserted into the power socket.
Laser statement
This symbol indicates that laser radiation might hurt your eyes if not strictly following
the instructions.
English
Laser type
This laser product is identied as Class 1 for all operating procedures.
Caution: Carrying out the control, adjustment or procedure not specied in this
document may cause dangerous radiation.
7
Label indication
The following diagram shows label locations.
English
1. Laser warning label
2. Specication label
Note:
Specication labels may vary due to different delivery
regions. Consult the dealer for details.
8
Laser indication
The following diagram shows the location of laser aperture. Be aware that you must not look straight at
the laser.
Laser aperture
Heat radiation notice
Leave a space at least 500 mm (19.7 in.) around the air outlet. Make sure that no object blocks the
ventilation within 300 mm (11.8 in.).
English
Keep the air vent at least 1 m away from the air inlet of other projectors.
Air inletAir outlet
9
English
y Leave a space at least 50 cm around the air outlet.
Min. 500 mm
(19.69 in.)
Min. 500 mm
(19.69 in.)
Min. 500 mm
(19.69 in.)
Min. 100mm
(3.94 in.)
Min. 300 mm
in.)
(11.81
Min. 500 mm
(19.69 in.)
y Make sure that the air inlet would not suck in the hot air from the air outlet.
y When using this product in a conned space, make sure that the temperature of the air near this
space does not exceed the operating temperature of the projector in operation. Also, make sure that
the air inlet and air outlet are not blocked.
y All chassis have passed a certied thermal evaluation. It is assured that the projector does not reuse
the waste gas, otherwise the projector would shutdown, even if the ambient temperature is within
the acceptable operating range.
* The warranty card is only supplied in some specic regions. Please consult your dealer for detailed
information.
11
Introduction
Projector exterior view
English
Front/upper side
Rear/upper side
1. POWER indicator light
2. TEMP (temperature) warning light
3. LAMP indicator light
4. Front IR remote sensor
5. Front adjuster foot
6. Side ventilation hole
7. Front adjuster foot
8. Vertical lens knob
9. Lens lock knob
10. Horizontal lens knob
11. AC power cord inlet
12. Kensington anti-theft lock slot
13. Control terminal
14. Control panel
15. Dust cap (air inlet area)
16. Ventilation hole (sucking cool air)
17. HDMI2/MHL
18. Rear IR remote sensor
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Controls and functions
Control panel
y 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 31 for details.
y Volume/Arrow keys ( /◄ Left)
Turns down the volume.
y SOURCE
Displays the source selection bar.
y MODE/ENTER
Selects an available picture setup mode.
Activates the selected On-Screen Display (OSD) menu item. See “Using the menus” on page 31 for
details.
y Keystone/Arrow keys ( /▼ Down)
Manually corrects distorted images resulting from an angled projection. See “Correcting 2D keystone”
on page 29 for details.
y AUTO
Automatically determines the best picture timings for the displayed image. See “Auto-adjusting the
image” on page 28 for details.
y Volume/Arrow keys ( /► Right)
Turns up the volume.
y POWER
Toggles the projector between standby mode and on. See “Starting up the projector” on page 27 and
“Shutting down the projector” on page 48 for details.
y Keystone/Arrow keys ( / ▲ Up)
When the On-Screen Display (OSD) menu is activated, the ▲, ▼, ◄ and ► keys are used as
directional arrows to select the desired menu items and to make adjustments. See “Using the menus”
on page 31 for details.
y ECO BLANK
Used to hide the screen picture. See “Hiding the image” on page 41 for details.
English
13
Control terminal
English
y MONITOR OUT
Connects to other display devices used for simultaneous playback and display.
y PC 1/PC 2
This indicates the RGB or YPbPr/YCbCr output signal.
y S-VIDEO
Connecting S-Video source.
y HDMI 1
Connecting HDMI source.
y HDMI 2/MHL
Connecting HDMI or MHL source.
y LAN
Connecting to RJ45 Cat5/Cat6 Ethernet cable to control the projector via Internet.
y USB 1.5A
Supporting 5V/1.5A output.
y VIDEO
Connecting Video source.
y MiNi-B
This is the port for maintenance only. Only authorized maintenance personnel are allowed to use this
port.
y RS-232
This is a standard 9-pin D-sub connector. It is used for connecting to the PC to control the system
and maintain the projector.
y AUDIO IN (L/R)
Connecting to the audio input source via the audio cable or audio L/R cable.
y AUDIO OUT
Connecting to the loudspeaker or earphone.
y AUDIO IN
Connecting to the audio input source via the audio cable.
y 12V TRIGGER
This is the 12V trigger outlet. It is used to trigger external devices such as the electric screen. Consult
your dealer for the way to connect to these devices.
14
Remote controller
English
7. LASER
Emits visible laser pointer light for
presentation purposes.
8. MHL control buttons
These buttons are used when playing the
media. Their functions are listed by order:
Go to the previous document/Play/Pause/Go
to the next document/Fast rewind/Stop/Fast
forward.
These buttons can only be used when
controlling the intelligent device in MHL
mode.
9. ZOOM+/ZOOM-
Magnies or reduces the projected picture
size.
10. ASPECT
Selects the display aspect ratio.
11. FREEZE
Freezes the projected image.
1. ON/ OFF
Toggles the projector between standby mode
and on.
2. Source selection button
Select the input source displayed.
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.
Automatically determines the best picture
timings for the displayed image.
If no OSD menu is available and you're in
the MHL signal source mode, long-press this
button for 3 seconds to switch between the
MHL and DLP modes on the MHL key of
remote control.
6. ECO BLANK
Used to hide the screen picture.
15
16. ► Right/
English
17. MODE/ENTER
18. SOURCE
19. PAGE +/PAGE–
20. MIC/VOL +/MIC/VOL -
Turn up 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.
In the MHL mode, use #3, #5 and #16 as
arrow keys. Use #4 for MENU/EXIT and #17
for MODE/ENTER.
Selects an available picture setup mode.
Activates the selected On-Screen Display
(OSD) menu item.
Displays the source selection bar.
You can operate your display software
program (on a connected PC) which responds
to page up/down commands (like Microsoft
PowerPoint) by pressing PAGE +/- on the
remote control.
Adjusts the microphone’s sound level.
Operating the laser
pointer
Avoid Exposure
Laser radiation is
emitted from this aperture
The Laser Pointer is
a presentation aid for
professionals. It emits red
colored light when you
press it and the indicator
lights up red.
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.
21. MUTE
Toggles projector audio between on and off.
22. SMART ECO
Switches the light source mode.
23. QUICK INSTALL
Displays the Quick Install menu.
When the projector is in the MHL mode, the function of the keypad on the
projector shall be the same as the key on the remote control.
Use the remote control to manipulate the intelligent device
When the projector projects an image from the MHL-compatible intelligent device, you can use the
remote control to control the intelligent device.
To enter the MHL mode, press AUTO for 3 seconds. Use the following buttons to control the
intelligent device: Arrow keys ( /▲Up, /▼Down, ◄Left, ► Right), MENU/EXIT and the
MHL control button.
To exit the MHL mode, press AUTO for 3 seconds.
16
Effective range of remote control
Infra-Red (IR) remote control sensors are located on the front and rear 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
exceed 8 meters (~ 26 feet).
30Ƀ
Ƞ
Approx. ±30°
English
Replacing the remote control battery
1. To open the battery cover, turn the remote control over to view its back, push on the nger 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. Ret the cover by aligning it with the base and sliding it back down into position. Stop when it clicks
into place.
Caution:
y Avoid excessive heat and humidity.
y There may be battery damage if the battery is incorrectly replaced.
y Replace only with the same or equivalent type recommended by the battery manufacturer.
y Dispose of the used battery according to the battery manufacturer’s instructions.
y Never throw a battery into a re. There may be danger of an explosion.
y 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.
17
Installation
Positioning your projector
English
Choosing a location
Your projector is designed to be installed in one of four possible installation locations:
1.Front Table
Select this location with the projector placed near
the oor in front of the screen. This is the most
common way to position the projector for quick
setup and portability.
3.Front Ceiling
Select this location with the projector suspended
upside-down from the ceiling in front of the
screen.
Purchase the BenQ Projector Ceiling Mounting Kit
from your dealer to mount your projector on the
ceiling.
* Set Front Ceiling in the SYSTEM SETUP: Basic > Projector Installation menu after you
turn the projector on.
2.Rear Table
Select this location with the projector placed near
the oor behind the screen.
Note that a special rear projection screen is
required.
* Set Rear Table in the SYSTEM SETUP: Basic > Projector Installation menu after you
turn the projector on.
4.Rear Ceiling
Select this location with the projector suspended
upside-down from the ceiling behind the screen.
Note that a special rear projection screen and the
BenQ Projector Ceiling Mounting Kit are required
for this installation location.
* Set Rear Ceiling in the SYSTEM SETUP: Basic > Projector Installation menu after you
turn the projector on.
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.
18
Evaluate the distance based on the image size
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
Refer to “Dimensions” on page 69 for the center of lens dimensions of this projector before calculating
the appropriate position.
Max. zoomMin. zoom
Screen
Center of lens
H
English
W
Vertical offset A
Projection distance
LX770
The screen aspect ratio is 4:3 and the projected picture is 4:3
Screen size
Diagonal
Inchmm(max. zoom)(min. zoom)
30762475610108413841683112
401016610813146318622261149
5012707621016184123402838187
6015249141219222028183416224
80203212191626297737744571299
100254015242032373447305725373
H
(mm)
W
(mm)
Distance from screen (mm)
Min distance
Average
Max distance
Offset (mm)
120304818292438449156866880448
140355621342845524866418035523
160406424383251600575979190597
1804572274336586762855310345672
2005080304840647519950911500747
22055883353447082761046512655821
25063503810508094111189914387933
3007620457260961130414289172741120
19
LH770
The screen aspect ratio is 16:9 and the projected picture is 16:9
English
Screen size
H
Inchmm(max. zoom)(min. zoom)
307623746648911140138996
401016498886120515371869128
5012706231107152019342348160
6015247471328183423312828192
8020329961771246331253787256
100254012452241309239194746320
120304814942657372147135704384
140355617433099435055076663448
160406419923542497963017622512
180457222413985560870958581576
200508024914428623778899540640
2205588274048706866868210499704
2506350311355357809987311937800
(mm)W(mm)
Distance from screen (mm)
Min distance
Average
Max distance
Offest (mm)Diagonal
30076203736664193821185814335960
Note:
A 5-percent tolerance exists between these numbers due to the difference among optical components. 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. To optimize the projection quality,
we suggest to project images in an area without grayscale.
20
Press the lens shift button for adjustment
Horizontal lens shift
adjustment bar
Vertical lens shift
adjustment bar
You can use the lens shift function to adjust the location of projected image horizontally or vertically in
the range described below.
Adjust the location of vertical image
English
You can adjust the height of vertical image between the shift locations 124.5% +/-7.8% (XGA), 125.7%
+/-7.9% (1080P).
Adjust the location of horizontal image
You can adjust the height of horizontal image between the shift locations 0% +/-6.3% (XGA), 0% +/-4.8%
(1080P).
Note: A 3-percent tolerance exists for the lens shift.
21
Adjust the zoom/focus function
You can turn the zoom gear for zoom-in and zoom-out. You can turn the focus gear to focus on an image
until the image becomes clear. The projector will focus on an image in a certain distance. Refer to “Fine-
tuning the image size and clarity” on page 28.
English
Zoom ring
Focus ring
22
Connection
Before connection
y Please read the manual for connection to external devices carefully before connection.
y Shut down the power supply of all devices before connecting the cable.
y Bear the following in mind before connecting the cable. A breakdown might occur if not following
these rules.
y Please touch metal objects nearby to release static electricity before connecting the cable to the
projector or device linking to the projector.
y Do not use any over-length cable to connect to the projector or use it to connect the device
to the projector. A long cable would operate like an antenna. It is more likely to be interfered by
noise.
y When connecting a cable, connect the GND (earth) part rst and then insert the connector
linking to the device.
y Get a connecting cable not provided by the supplier to connect the external device to the system.
y If there is too much jitter in the video signal, the image on the screen shakes. Therefore, you must
connect the time base corrector (TBC).
y If the synchronous signal output in the computer or video device is cut off due to the change of the
video output setting or other reasons, the color of projected image would be distorted for a short
time.
English
y The projector receives the video signal, Y/C signal, YCBCR/YPBPR signal, simulated RGB signal (TTL
level for synchronous signal) and numeric signal.
y Some computer models are not compatible with the projector.
y Use the cable compensator when using the long cable to connect the device to the projector. The
image might not be displayed properly if not using the cable compensator.
PC
No.Serial
1P/PR
2G/Y
3B/PB
4-
5GND
6GND
7GND
8GND
No.Serial
9-
10GND
11GND
12DDC data
13SYNC/HD
14VD
15DDC clock
23
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