BenQ LX770 User manual

LX770 / LH770

Digital Projector

User Manual

V1.00

English

2

Copyright & Disclaimer

Copyright

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 specically 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.

2017/ 9/ 5

Table of Contents

Copyright & Disclaimer ........................................................................2

Copyright .............................................................................................................................................. 2

Disclaimer ............................................................................................................................................. 2

Statement for hyper links and third-party websites ....................................................................2

Important safety instructions ..............................................................6

Safety Instructions ....................................................................................................... 6

Laser statement ........................................................................................................... 7

Laser type ............................................................................................................................................. 7

Label indication .................................................................................................................................... 8

Laser indication ................................................................................................................................... 9

Heat radiation notice .................................................................................................. 9

Shipping contents ................................................................................11

Standard accessories ................................................................................................. 11

Optional accessories .................................................................................................. 11

Introduction .........................................................................................12

Projector exterior view ............................................................................................. 12

Front/upper side ................................................................................................................................12

Rear/upper side .................................................................................................................................12

Controls and functions .............................................................................................. 13

Control panel ..................................................................................................................................... 13

Control terminal ...............................................................................................................................14

Remote controller ............................................................................................................................15

Installation ...........................................................................................18

Positioning your projector ........................................................................................ 18

Choosing a location ..........................................................................................................................18

Evaluate the distance based on the image size ....................................................... 19

Obtaining a preferred projected image size ................................................................................19

Projection dimensions ......................................................................................................................19

Press the lens shift button for adjustment .............................................................. 21

Adjust the location of vertical image ............................................................................................ 21

Adjust the location of horizontal image ......................................................................................21

Adjust the zoom/focus function ....................................................................................................22

Connection ................................................................................................................. 23

Before connection ............................................................................................................................23

Connection with the AV device .....................................................................................................25

Connection with the computer .....................................................................................................25

Connection with LAN .....................................................................................................................26

Operation .............................................................................................27

Starting up the projector ................................................................................................................27

Adjusting the projected image ................................................................................. 28

Adjusting the projection angle .......................................................................................................28

Auto-adjusting the image.................................................................................................................28

Fine-tuning the image size and clarity ...........................................................................................28

Correcting 2D keystone ..................................................................................................................29

Adjusting corner t ..........................................................................................................................30

Using the menus ..................................................................................31

Securing the projector .............................................................................................. 32

Using a security cable lock ..............................................................................................................32

Utilizing the password function ................................................................................ 32

Setting a password ............................................................................................................................32

If you forget the password .............................................................................................................. 33

Entering the password recall procedure ......................................................................................33

Changing the password ....................................................................................................................33

Switching input signal ................................................................................................ 34

Changing Color Space ............................................................................................... 34

Selecting the aspect ratio ......................................................................................... 35

About the aspect ratio .............................................................................................. 36

Optimizing the image ................................................................................................ 37

Using Wall Color ............................................................................................................................... 37

Selecting a picture mode .................................................................................................................37

Fine-tuning the image quality in user modes ..............................................................................38

Remote paging operations ..............................................................................................................41

Freezing the image ............................................................................................................................41

Hiding the image ................................................................................................................................41

Locking control keys ........................................................................................................................42

Operating in a high altitude environment ................................................. ...................................42

Adjusting the sound ..........................................................................................................................42

Using Test Pattern .............................................................................................................................43

Using Quick Install ............................................................................................................................ 44

Control the projector via the wired LAN environment ........................................................44

Install the wired LAN setting .........................................................................................................44

Remote control the projector via web browser .......................................................................46

Shutting down the projector .................................................................................... 48

Menu operations ........................................................................................................ 49

Description of each menu ......................................................................................... 54

Maintenance ........................................................................................62

Prior to projector maintenance ............................................................................... 62

Care of the projector ......................................................................................................................62

Clean the lens ............................................................................................................. 62

Cleaning the projector case ...................................................................................... 62

Dust lter maintenance ............................................................................................ 63

Dust lter replacement ...................................................................................................................63

LED Indicator ............................................................................................................. 65

System message ................................................................................................................................. 65

Light source error messages ..........................................................................................................65

Thermal error messages .................................................................................................................66

Troubleshooting...................................................................................67

Troubleshooting ......................................................................................................... 67

The projector does not turn on. ...................................................................................................67

No picture ..........................................................................................................................................67

Blurred image ..................................................................................................................................... 67

Remote control does not work ....................................................................................................67

The password is incorrect ..............................................................................................................67

Specications .......................................................................................68

Specications .............................................................................................................. 68

Dimensions ................................................................................................................. 69

Ceiling mount installation ...............................................................................................................69

Appendix ..............................................................................................70

Timing chart ............................................................................................................... 70

Supported timing for PC/PC2 input .............................................................................................70

Supported timing for Component-YPbPr input .........................................................................71

Supported timing for VIDEO/S-VIDEO input .............................................................................72

Supported timing for HDMI/DVI-D (HDCP) input ................................................................... 72

Supporting timing for HDMI Video input.....................................................................................74

PJLink .......................................................................................................................... 75

English

6

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.

Safety Instructions

1. Do not look straight at the projector lens during operation. The intense light beam may damage your

eyes.

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

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).

4. 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. Press ECO BLANK

on the remote control to turn off the lamp temporarily.

5. Do not place this product on an unstable cart, stand, or table. The product may fall, sustaining serious

damage.

6. 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.

7. Do not place this projector in any of the following environments.

y Space that is poorly ventilated or conned. 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 alarms

y Locations with an ambient temperature above 40°C / 104°F

y Locations where the altitudes are higher than 5000 m (16400 feet).

8. Do not block the ventilation holes.

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 inammables near the projector.

If the ventilation holes are seriously obstructed, overheating inside the projector may result in a re.

English

7

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.

Do not remove it.

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

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.

Laser type

This laser product is identied as Class 1 for all operating procedures.

Caution: Carrying out the control, adjustment or procedure not specied in this

document may cause dangerous radiation.

English

8

Label indication

The following diagram shows label locations.

1. Laser warning label

2. Specication label

Note:

Specication labels may vary due to different delivery

regions. Consult the dealer for details.

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9

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.).

Keep the air vent at least 1 m away from the air inlet of other projectors.

Air inletAir outlet

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10

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

(11.81

in.)

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 conned 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 certied 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.

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11

Shipping contents

Standard accessories

Remote controller

VGA cable Power cord

Battery

Quick start guide Warranty card

Optional accessories

1. Ceiling mount kit

2. 3D glasses

3. Wireless dongle: QCast (QP01), InstaShow™(WDC10)

* The warranty card is only supplied in some specic regions. Please consult your dealer for detailed

information.

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12

Introduction

Projector exterior view

Front/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

Rear/upper side

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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13

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.

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14

Control terminal

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.

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Remote controller

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.

5. ◄ Left/

Turn down the projector volume.

6. ECO BLANK

Used to hide the screen picture.

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-

Magnies or reduces the projected picture

size.

10. ASPECT

Selects the display aspect ratio.

11. FREEZE

Freezes the projected image.

12. NETWORK SETTING

Displays Network Settings menu.

13. Number keys

Enter numbers in Network Settings.

Don't press the numeric buttons 1, 2,

3 and 4 when being asked to enter the

password.

14. NETWORK

It is not available in this projector.

15. AUTO

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.

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16. ► Right/

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.

17. MODE/ENTER

Selects an available picture setup mode.

Activates the selected On-Screen Display

(OSD) menu item.

18. SOURCE

Displays the source selection bar.

19. PAGE +/PAGE–

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.

20. MIC/VOL +/MIC/VOL -

Adjusts the microphone’s sound level.

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.

Operating the laser

pointer

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.

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.

Avoid Exposure

Laser radiation is

emitted from this aperture

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17

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).

Ƞ

30Ƀ

Approx. ±30°

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. Ret 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.

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Installation

Positioning your projector

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.

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.

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.

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.

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19

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. zoom Min. zoom

Screen

Center of lens

Projection distance

Vertical offset A

H

W

LX770

The screen aspect ratio is 4:3 and the projected picture is 4:3

Screen size

Distance from screen (mm)

Offset (mm)

Diagonal

H

(mm)

W

(mm)

Min distance

Average

Max distance

Inch mm (max. zoom) (min. zoom)

30 762 475 610 1084 1384 1683 112

40 1016 610 813 1463 1862 2261 149

50 1270 762 1016 1841 2340 2838 187

60 1524 914 1219 2220 2818 3416 224

80 2032 1219 1626 2977 3774 4571 299

100 2540 1524 2032 3734 4730 5725 373

120 3048 1829 2438 4491 5686 6880 448

140 3556 2134 2845 5248 6641 8035 523

160 4064 2438 3251 6005 7597 9190 597

180 4572 2743 3658 6762 8553 10345 672

200 5080 3048 4064 7519 9509 11500 747

220 5588 3353 4470 8276 10465 12655 821

250 6350 3810 5080 9411 11899 14387 933

300 7620 4572 6096 11304 14289 17274 1120

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LH770

The screen aspect ratio is 16:9 and the projected picture is 16:9

Screen size

Distance from screen (mm)

Offest (mm)Diagonal

H

(mm)

W

(mm)

Min distance

Average

Max distance

Inch mm (max. zoom) (min. zoom)

30 762 374 664 891 1140 1389 96

40 1016 498 886 1205 1537 1869 128

50 1270 623 1107 1520 1934 2348 160

60 1524 747 1328 1834 2331 2828 192

80 2032 996 1771 2463 3125 3787 256

100 2540 1245 2241 3092 3919 4746 320

120 3048 1494 2657 3721 4713 5704 384

140 3556 1743 3099 4350 5507 6663 448

160 4064 1992 3542 4979 6301 7622 512

180 4572 2241 3985 5608 7095 8581 576

200 5080 2491 4428 6237 7889 9540 640

220 5588 2740 4870 6866 8682 10499 704

250 6350 3113 5535 7809 9873 11937 800

300 7620 3736 6641 9382 11858 14335 960

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.

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