Any third party content or service preinstalled in this product is provided "as is". BenQ does not, by expression or by implication, make any warrant to the content or to the services provided by third parties.
Table of Contents Copyright and disclaimer .............. 2 Copyright ..............................2 Disclaimer ..............................2 Statement regarding hyperlinks and third-party websites ............2 Important safety instructions ............6 General safety instruction .................... 6 Notice on laser ....................... 7 Laser class ..............................7 Laser parameters ...........................
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Operations ..................28 Switch on/off the projector ................... 28 Connecting the power cord ........................ 28 Power indicator ............................28 Switch on the projector ........................29 Switch off the projector ........................35 Controlling the projector through a Wired LAN environment ....... 36 Configuring the Wired LAN .......................
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Lamp error message..........................66 Thermal error message ........................66 Troubleshooting ................68 Troubleshooting ......................68 The projector does not turn on......................68 No picture............................... 68 Blurred image............................68 Remote control does not work......................68 The password is incorrect........................68 Specifications ..................
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. General safety instruction 1.
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 equipment has a three-pin grounding-type power plug. Do not remove the grounding pin.
Rev. / KTL ZUXXXXX-XXXXX R-R-BQR-XXXXX CAN ICES-3 (B)/NMB-3(B) LX 785 atent” http://patmarking.benq.com/ 100-240V , 50/60Hz, 5.3A Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan 201903 Apparatet må tilkoples jordet stikkontakt Apparaten skall anslutas till jordat uttag Apparatets stikprop skal tilsluttes en stikkontakt med jord,...
Laser light instruction Below drawing is the laser aperture location. Be careful not to let the eye see the light directly. Laser aperture Interlock switches This machine has 1 (Top cover x 1) Interlock switches to protect the laser light Leakage. •...
Prepare for installation Cooling notice Allow at least 50 cm (19.7 inch) for clearance around the exhaust vent. Make sure no objects block air input within 30 cm (11.8 inch). Keep the outlet at least 1 m away from the inlets of other projectors. Air inlet Air inlet Air outlet...
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• Allow at least 50 cm of clearance around the exhaust vent. Minimum 50 cm Minimum 50 cm Minimum 50 cm (19.69 inch) (19.69 inch) (19.69 inch) Minimum 50 cm (19.69 inch) Minimum 10 cm (3.94 inch) Minimum 50 cm (19.69 inch) Minimum 30 cm (11.81 inch)
Package contents Standard packing items Quick Start Guide Warranty card Optional accessories 1. Ceiling mount kit 2. 3D glasses 3. QCast (QP01), InstaShow™ (WDC10) 4. Dust filter * The warranty card is only supplied in some specific regions. Please consult your dealer for detailed information.
Introduction Projector exterior view Front and upper side view 1. POWER indicator light 2. TEMPerature indicator light 3. LIGHT indicator light 4. Control panel 5. Front adjuster foots 6. Front vent (cool air intake) 7. Front IR remote sensor 8. Projection lens 9.
Controls and functions Control panel • Power Toggles the projector between standby mode and on. See "Switch on the projector" on page 29 "Switch off the projector" on page 35 for details. • MENU Turns on the On-Screen Display (OSD) menu. Goes back to previous OSD menu, exits and saves menu settings.
Connection to an audio input source via an audio cable. AUDIO IN (L/R) • Connection to an audio input source via an audio or audio L/R cable. • AUDIO OUT Connection to a speaker or headset. Note: For more information about upgrading firmware via LAN, please contact BenQ service.
Remote control • ON / OFF Toggles the projector between standby mode and on. • COMPUTER1/COMPUTER2/VIDEO/S-VIDEO/ HDMI/NETWORK Selects an input source for display. HDMI supports cycle switching between HDMI 1, HDMI 2 and HDMI 3/ MHL input signals. Press HDMI repeatedly to switch the HDMI 1, HDMI 2 and HDMI 3/MHL input signals.
• MHL control buttons Goes to the previous file/Plays/Pauses/Goes to the next file/Rewinds/Stops/Fastforwards during media playback. Only available when controlling your smart device in MHL mode. Key functions supports may vary with different intelligent devices. ZOOM+/ZOOM- • Magnifies or reduces the projected picture size. •...
Remote control effective range Infra-Red (IR) remote control sensor is 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).
Installation Evaluate for distance by 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"...
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Note: • 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.
Adjusting the horizontal image position With the lens in the center position the horizontal image position can be adjusted between +/-3.2% for LX785 and +/-2.5% for LU785. Please consult the Lens Shift Range diagram below for further clarification. Note: Image quality is assured only within the listed lens shift range.
Lens shift range diagram LX785_XGA Normal projection position Desk-Front Projection Vertical shift Max 0.12V Height of projected image Max 0.022V 0.032H 0.032H Vertical shift Width of projected image Ceiling Mount-Front Projection Vertical shift Max 0.022V Shift to Left Shift to Right Height of projected image Vertical shift Max 0.12V...
Adjusting the Zoom/Focus You may turn the zoom ring to zoom in or out. To focus the image, rotate the focus ring until the image is clear. The projector will focus at distances. See page 19. Zoom ring Focus ring Installing the side filter Filter is an optional accessary.
Connection Before connecting • Before connecting, carefully read the operating instructions for connecting the external device • Turn off the power to all devices before connecting cables. • Take note of the following before connecting cables. Failure to do so may result in malfunctions.
AUDIO (L/R). Connecting smart devices The projector can also project the content directly from your personal device(phone, tablet, NB) through optional BenQ wireless solution such as Qcast dongle or InstaShow™. Please consult to your local agent if you're interested in it.
Operations Switch on/off the projector Connecting the power cord Plug the power cord into the projector and into a wall socket. Turn on the wall socket switch (where fitted). Check that the POWER indicator light on the projector lights orange after power has been applied.
Switch on the projector POWER on the projector or ON on the remote control to start the projector and Press a start up tone sounds. The POWER indicator light flashes green and stays green when the projector is on. The start up procedure takes about 30 seconds. In the later stage of start up, a startup logo is projected.
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Select language To use the OSD menus, please set them to your familiar language first. *After this process is done, this menu will not show up again after 1st time adjustment unless user presses Reset All Settings. 1. Press ENTER on the projector or remote control to turn the OSD menu on.
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2. Use ◄/► to highlight the System Setup: Basic menu. 3. Press ▼ to highlight Language and press ENTER to select a preferred language. 4. Press ENTER twice* on the projector or remote control to leave and save the settings. *The first press leads you back to the main menu and the second press closes the OSD menu.
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Purchase the BenQ Projector Ceiling Note that a special rear projection screen Mounting Kit from your dealer to mount and the BenQ Projector Ceiling Mounting your projector on the ceiling. Kit are required for this installation *Set Front Ceiling in the SYSTEM location.
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Using test pattern The projector is capable of displaying the grid test pattern. It can be used to assist you with the adjustment of image size and focus, ensuring that the projected image is free from distortion. To display the test pattern, open the OSD menu and go to the System Setup: Advanced > Test Pattern and press ◄/►...
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3. Press ▲/▼/◄/► to select one of the four corners and press ENTER. 4. Press ▲/▼ to adjust vertical values from 0 to 60. 5. Press ◄/► to adjust horizontal values from 0 to 60. Auto adjusting the image In some cases, you may need to optimize the picture quality. To do this, press AUTO on the projector or remote control.
Fine turning the image size and clarity 1. Adjust the projected image to the size that you need using the ZOOM ring. 2. Sharpen the image by rotating the FOCUS ring. Zoom ring Focus ring Switch off the projector 1. Press POWER or OFF and a confirmation message will appear prompting you.
Controlling the projector through a Wired LAN environment Wired LAN allows you to manage the projector from a computer using a web browser when the computer and the projector are properly connected to the same local area network. Configuring the Wired LAN If you are in a DHCP environment: 1.
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If you are in a non-DHCP environment: 1. Repeat steps 1-4 above. 2. Press ▼ to highlight DHCP and press ◄/► to select Off. 3. Contact your ITS administrator for information on the IP Address, Subnet Mask, Default Gateway, and DNS Server settings. 4.
Controlling the projector remotely through a web browser Once you have the correct IP address for the projector and the projector is on or in standby mode, you can use any computer that is on the same local area network to control the projector. 1.
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The tools page allows you to manage the projector, configure the LAN control settings and secure access of remote network operation on this projector. 1. You can name the projector, keep track of its location and the person in charge of it. 2.
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The info page displays the information and status of this projector. Press Exit to go back to the remote network operation page. Press Exit to go back to the remote network operation page. For more information, visit http://www.crestron.com & www.crestron.com/getroomview.
Using the menu Main menu The projector is equipped with On-Screen Display (OSD) menus for making various adjustments and settings. Below is the overview of the OSD menu. Main menu icon Main menu Sub-menu Status Press MENU to Current input the previous page signal or to exit.
Display menu Wall Color • Adjusts the color settings of the image to suit the color of the wall on which the image is projected. The options are Off, Light Yellow, Pink, Light Green, Blue and Blackboard. • Aspect Ratio Press ◄/►...
4. 16:9: Scales an image so that it is displayed 5. 16:10: Scales an image so that it is displayed in the center of the screen with a 16:9 in the center of the screen with a 16:10 aspect ratio. This is most suitable for images aspect ratio.
Corner Fit menu • Top Left Press ENTER and press ▲/▼/◄/► to correct the top left corner. • Top Right Press ENTER and press ▲/▼/◄/► to correct the top right corner. • Bottom Left Press ENTER and press ▲/▼/◄/► to correct the bottom left corner. •...
Blanking menu • Press ◄/► to adjust the top blanking area on the projected picture. • Bottom Press ◄/► to adjust the bottom blanking area on the projected picture. • Left Press ◄/► to adjust the left blanking area on the projected picture. •...
Picture menu Picture Mode • Press ◄/► to select a picture mode. The options are Bright, Presentation, sRGB, Vivid, Cinema, Infographic, 3D, User 1 and User 2. • Bright mode: Maximizes the brightness of the projected image. This mode is suitable for environments where extra-high brightness is required, such as using the projector in well lit rooms.
Contrast Press ◄/► to adjust the contrast of the projected image. The higher the value, the greater the contrast. Use this to set the peak white level after you have previously adjusted the Brightness setting to suit your selected input and viewing environment.
3D Color Management • Press ENTER to enter the 3D Color Management menu. See "3D Color Management menu" on page 49 for more details. • Reset Picture Settings Press ENTER to enter the Reset Picture Settings menu. Press ▲/▼ and press ENTER to set to the default value.
3D Color Management menu • Primary Color Press ENTER to enter the Primary Color menu. Press ▲/▼ to select the primary color. The options are R, G, B, C, M and Y. • Press ENTER to enter the Hue menu. Press ▲/▼/◄/► to adjust settings. •...
4. Press ▼ to highlight Hue and press ◄/► to select its range. Increase in the range will include colors consisted of more proportions of its two adjacent colors. Please refer to the illustration to the right for how the colors relate to each other. For example, if you select Red and set its range at 0, only pure red in the projected picture will be selected.
Press ◄/► to select the background color when no input signal. The options are BenQ, Black, Blue, Purple and Gray. • Splash Screen Press ◄/► to select the start up patern when the projector turns on. The options are BenQ, Black and Blue.
Menu Settings menu • Menu Display Time Press ◄/► to select the menu display time period. The options are 5 sec, 10 sec, 20 sec, 30 sec and Always. Menu Position • Press ◄/► to select the menu display position. The options are Center, Top-Left, Top-Right, Bottom-Right and Bottom-Left.
Filter Settings menu • Filter Timer Press ◄/► to enable or disable filter timer. Reset Filter Timer • Press ENTER to reset the filter timer when the filter is replaced. • Filter Usage Time Displays the cureent number of hours the filter has been used. System Setup : Advanced menu High Altitude Mode •...
Baud Rate • Press ◄/► to select RS-232 baud rate. The options are 2400, 4800, 9600, 14400, 19200, 38400, 57600 and 1152000. • Test Pattern Press ◄/► to select the test pattern. The options are Off, Grid, White, Red, Green, Blue, Black, RGB Ramps, Color Bar, Step Bars, CheckBoard, Horizental Lines, Vertical Lines, Diagonal Lines, Horizontal Ramp and Vertical Ramps.
Volume • Press ◄/► to adjust the volume of the projector. • Using the remote control Press VOLUME+/VOLUME- to select a desired sound level. • Using the OSD menu 1. Press MENU and then press ◄/► until the System Setup: Advanced menu is highlighted.
Closed Caption menu • Closed Caption Enable Press ◄/► to enable or disable the closed caption function. Caption Version • Press ◄/► to select the closed captioning mode. The options are CC1, CC2, CC3 and CC4. Standby Settings menu Standby Mode •...
AMX Device Discovery • Press ◄/► to enable or disable the AMX device discovery function. When the function is enabled, the projector can be detected by an AMX controller. • Mac Address Displays the cureent MAC address of the projector. Information menu •...
Brightness Contrast Color Tint Sharpness Brilliant Color On/ Off Gamma Selection 1.8/ 2.0/ 2.1/ 2.2/ 2.3/ 2.4/ 2.6/ BenQ Color Temperature Cool/ Normal/ Warm Color Temperature R Gain/ G Gain/ B Gain/ Fine Tuning R Offset/ G Offset/ B Offset...
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Main menu Sub-menu Options System Setup: High Altitude Mode On/ Off Advanced Audio Settings Mute On/ Off Volume Built-in speaker On/ Off Light Settings Light Mode Normal / Economic/ Dimming/ Custom Custom Brightness 25%-100% Light Usage Time Light Source Usage Time/ Normal Mode/ Economic Mode/ Dimming Mode/ Custom Mode...
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Main menu Sub-menu Options Information Current System Status Source Picture Mode Light Mode Resolution 3D Format Color System Light Usage Time Firmware Version Service Code...
Maintenance Before maintaining the projector • Make sure to turn off the power before maintaining the projector. • When switching off the projector, make sure to follow the procedures in "Switch off the projector" on page Care of the projector Your projector needs little maintenance.
Filter maintenance Cleaning the filter The air filter prevents dust from accumulating on the surface of the optical elements inside the projector. If the filter is dirty or clogged, your projector may overheat or degrading the projected image quality. 1. Turn off the projector, and unplug the AC power cord from the AC outlet. 2.
Replacing the side filter 1. Turn off the projector and unplug the power 3. Align the holes on the new filter with the cord from the outlet. Remove any dust on hooks on the filter cover. the projector and around the air vents. Remove the filter cover.
LED indicator System messages POWER TEMP LIGHT Status Orange Stand-by Green Powering up Flashing Green Normal operation Orange Normal power down cooling Flashing Downloading Flashing Flashing Flashing Green Color Wheel start fail Green Phosphor Wheel start fail Flashing Scaler shutdown fail (data abord) Flashing Scaler reset fail (video projector only) LAN download fail...
Lamp error message POWER TEMP LIGHT Status Lamp1 error in normal operation Lamp is not lit up Flashing Thermal error message POWER TEMP LIGHT Status Fan 1 error (the actual fan speed is outside the desired speed) Fan 2 error (the actual fan speed is outside the desired Flashing speed) Green...
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POWER TEMP LIGHT Status Green Green Thermal IC #2 I2C Connection error Flashing Flashing Green Temperature 3 error (over limited temperature) Green Thermal Sensor 3 open error Flashing Thermal Sensor 3 short error Green Green Green Green Thermal IC #3 I2C Connection error Flashing Green Temperature 4 error (over limited temperature)
The projector will display a coded number on the screen. 2. Write down the number and turn off your projector. 3. Seek help from the local BenQ service center to decode the number. You may be required to provide proof of purchase documentation to...
Specifications Specifications Optical Control Resolution LX785 Mini type-B x 1 1024 x 768 RS-232 serial control LU785 9 pin x 1 1920 x 1200 IR receiver x 2 Display system LAN control Single-chip DLP™ system RJ45 x 1 (10/100 Mbps)
Supporting timing for HDMI-1 / HDMI-2 / HDMI-3 Video input Horizontal Vertical Dot Clock 3D Frame 3D Top Timing Resolution Frequency Frequency Frequency Frame side- Sequential Bottom (KHz) (Hz) (MHz) Packing by-side 480i 720 (1440) x 480 15.73 59.94 27.00 ◎...
RS232 command control RS232 pin assignment Serial Serial Short with pin8 Short with pin7 Ground RS232 serial port with a crossover cable Ground Function Type Operation ASCII Power Write Power On <CR>*pow=on#<CR> Write Power Off <CR>*pow=off#<CR> Read Power Status <CR>*pow=?#<CR> Source Write COMPUTER/YPbPr...
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Function Type Operation ASCII Picture Setting Read Horizontal Keystone value <CR>*hkeystone=?#<CR> Write Overscan Adjustment + <CR>*overscan=+#<CR> Write Overscan Adjustment - <CR>*overscan=-#<CR> Read Overscan Adjustment value <CR>*overscan=?#<CR> Write 4 Corners Top-Left - X Decrease <CR>*cornerfittlx=-#<CR> Write 4 Corners Top-Left - X Increase <CR>*cornerfittlx=+#<CR>...
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Function Type Operation ASCII Operation Read Quick auto search status <CR>*QAS=?#<CR> Settings Write Menu Position - Center <CR>*menuposition=center#<CR> Write Menu Position - Top-Left <CR>*menuposition=tl#<CR> Write Menu Position - Top-Right <CR>*menuposition=tr#<CR> Write Menu Position - Bottom-Right <CR>*menuposition=br#<CR> Write Menu Position - Bottom-Left <CR>*menuposition=bl#<CR>...
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Function Type Operation ASCII Miscellaneous Read Menu Status <CR>*menu=?#<CR> Write Source Menu On <CR>*sourmenu=on#<CR> Write Source Menu Off <CR>*sourmenu=off#<CR> Read Source Menu Status <CR>*sourmenu=?#<CR> Write <CR>*up#<CR> Write Down <CR>*down#<CR> Write Right <CR>*right#<CR> Write Left <CR>*left#<CR> Write Enter <CR>*enter#<CR> Write Back <CR>*back#<CR>...
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Function Type Operation ASCII Color Read Get Red Gain value <CR>*RGain=?#<CR> Calibration Write Green Gain + <CR>*GGain=+#<CR> Write Green Gain - <CR>*GGain=-#<CR> Write Set Green Gain value <CR>*GGain=value#<CR> Read Get Green Gain value <CR>*GGain=?#<CR> Write Blue Gain + <CR>*BGain=+#<CR> Write Blue Gain - <CR>*BGain=-#<CR>...
5th byte Return 0 Indicates other errors, 6th byte and returns 0 - 2 Light source LAMP? xxxxxxxxxxxx 1st number (1-5 digitals): Light source 1 runtime status query Input selection INST? 11 21 31 32 33 LX785/ LU785 list query...
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Returns the name set in [PROJECTOR NAME] of NAME? xxxxx query [NETWORK SETUP] Manufacturer INF1? BenQ Returns manufacturer name name query Model name INF2? LX785/ LU785 Returns moder name query Other INF0? information xxxxx Returns information such as version number queries Class CLASS? information...
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