MX850UST/MW851UST Digital Projector User Manual Welcome
Table of contents Important safety instructions .........................3 Introduction........................7 Projector features .................................. 7 Shipping contents.................................. 8 Projector exterior view .......................... 9 Controls and functions ....................... 10 Positioning your projector14 Choosing a location............................. 14 Obtaining a preferred projected image size ........................................................
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. 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.
Safety Instructions (Continued) 6. 9. The lamp becomes extremely hot during operation. Allow the projector to cool for approximately 45 minutes prior to removing the lamp assembly for replacement. Do not place this product on an unstable cart, stand, or table. The product may fall, sustaining serious damage. 7. Do not operate lamps beyond the 10. rated lamp life. Excessive operation of lamps beyond the rated life could cause them to break on rare occasions. Do not attempt to disassemble this projector.
Safety Instructions (Continued) 12. Do not place this projector in any of the 13. 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, shorten the projector's life span and darken the image.
Safety Instructions (Continued) 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. Ceiling 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.
Introduction Projector features The projector integrates high-performance optical engine projection and a user-friendly design to deliver high reliability and ease of use. The projector offers the following features.
Shipping contents Carefully unpack and verify that you have all of the items shown below. If any of these items are missing, please contact your place of purchase. Standard accessories The supplied accessories will be suitable for your region, and may differ from those illustrated. *The warranty card is only supplied in some specific regions. Please consult your dealer for detailed information.
Projector exterior view Front/upper side 1 6 2 1. 2. 3. 4. 5. 6. 7. 8. 4 9. 7 8 9 10 10. 3 11. 12. 13. 14. 15. 16. 4 5 17. Rear/lower side 11 12 21 22 13 14 15 18. 19. 16 17 18 19 20 20. Front IR remote sensor Mirror Projection lens Speaker grill Vent (cool air intake) Focus ring Vent (heated air exhaust) Lamp cover External control panel (See "Controls and functions" on page 10 for details.
Controls and functions Projector 9. 1 7 8 9 10 11 12 13 9 2 3 4 5 6 1. Focus ring 2. Adjusts the focus of the projected image. POWER indicator light 3. 4. Toggles the projector between standby mode and on. 5. Left/ 6. Decreases the projector volume. ECO BLANK 7. Used to hide the screen picture. TEMPerature warning light 8. Lights up red if the projector's temperature becomes too high. LAMP indicator light Indicates the status of the lamp.
Remote control 6. MODE/ENTER Selects an available picture setup mode. 1 8. Emits visible laser pointer light for presentation purposes. PAGE UP/PAGE DOWN 9. Operates your display software program (on a connected PC) which responds to page up/down commands (like Microsoft PowerPoint). FREEZE 3 13 14 15 4 16 5 17 6 16 7 18 8 19 10. Freezes the projected image. NETWORK SETTING 9 10 11 12 20 21 22 11. Enters network setting directly. TEST 12. Displays the test pattern. SMART ECO 13.
18. ZOOM+/ZOOM- 19. Magnifies or reduces the projected image size. VOLUME+/VOLUME- 20. Adjusts the sound level. MUTE 21. Toggles projector audio between on and off. ASPECT 22. Selects the display aspect ratio. MIC/VOL +/- 23. Adjusts the microphone sound level. CAPTURE 24. Captures the projected picture and save it as your startup screen. Numeric buttons Enters numbers in network settings. Numeric buttons 1, 2, 3, 4 cannot be pressed when asked to enter password.
Remote control effective range Infra-Red (IR) remote control sensor are located on the front and top of the projector. The remote control must be held at an angle within 30 degrees perpendicular to the projector's IR remote control sensors to function correctly. The distance between the remote control and the sensors should not exceed 8 meters (~ 26 feet). Make sure that there are no obstacles between the remote control and the IR sensors on the projector that might obstruct the infra-red beam.
Positioning your projector Choosing a location Your projector is designed to be suspended upside-down. Install the projector in one of two possible installation locations below: 1. Front Ceiling Select this location with the projector suspended upside-down from the ceiling in front of the screen. 2. Rear Ceiling Select this location with the projector suspended upside-down from the ceiling behind the screen.
Obtaining a preferred projected image size The distance from the projector lens to the screen, the zoom setting, and the video format each factors in the projected image size. MX850UST: For example, if you are using an 120-inch screen, the recommended projection distance is 1069 mm and the vertical offset is 457.2 mm. If your measured projection distance is 0.9 m (900 mm), the closest match in the "Distance from Screen in mm" column is 884 mm. Looking across this row shows that a 100'' (about 2.
MW851UST Screen Size Diagonal W Inches mm (mm) 60 1524 1292 70 1778 1508 80 2032 1723 90 2286 1939 100 2540 2154 120 3048 2585 150 3810 3231 200 5080 4308 220 5588 4739 240 6096 5169 260 6604 5600 280 7112 6031 300 7620 6462 H (mm) 808 942 1077 1212 1346 1615 2019 2692 2962 3231 3500 3769 4039 Distance from Screen in mm Vertical offset in mm 427 505 583 661 739 896 1130 1521 1677 1833 1989 2146 2302 177.7 207.3 236.9 266.5 296.2 355.4 444.2 592.3 651.6 710.8 770.0 829.3 888.
Connection When connecting a signal source to the projector, be sure to: 1. 2. 3. Turn all equipment off before making any connections. Use the correct signal cables for each source. 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. • The connection illustrations below are for reference only.
• 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. • The D-Sub output only works when an appropriate D-Sub input is made to the COMPUTER 1 jack.
Playing sound through the projector You can make use of the projector (mixed mono) 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 likely want to connect the audio output of your Video source device to that sound system, instead of to the mono audio projector. You can also use a microphone to output the sound through the projector speaker.
Operation Starting up the projector 1. Plug the power cord into the projector and into a power outlet. Turn on the power outlet switch (where fitted). Check that the POWER indicator light on the projector lights orange after power has been applied. Please use the original accessories (e.g. power cord) only with the device to avoid possible dangers such as electric shock and fire. 2. Press POWER on the projector or ON on the remote control to start the projector.
Adjusting the projected image 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. Within 3 seconds, the built-in Intelligent Auto Adjustment function will re-adjust the values of Frequency and Clock to provide the best picture quality. The current source information will be displayed in the corner of the screen for 3 seconds. This function is only available when PC signal (analog RGB) is selected.
Using the menus 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 DISPLAY Off Wall Color Auto Aspect Ratio Keystone On Position Sub-menu Status ENTER Phase 0 H. Size 0 Digital Zoom 3D Sync Off Disable 3D Sync Invert Teaching Template Highlight Current input signal Analog RGB MENU Exit Press MENU/ EXIT to the previous page or to exit.
Securing the projector Using a security cable lock The projector has to be installed in a safe place to prevent theft. Otherwise, purchase a lock, such as the Kensington lock, to secure the projector. You can locate a Kensington lock slot on the rear side of the projector. See item 22 on page 9 for details. A Kensington security cable lock is usually a combination of key(s) and the lock. Refer to the lock’s documentation for finding out how to use it.
If you forget the password If the password function is activated, you will be asked to enter the six-digit password every time you turn on Password Error the projector. If you enter the wrong password, the Please try again. password error message as pictured to the right displays lasting for 3 seconds, and the INPUT PASSWORD message follows.
Changing the password 1. 2. 3. 4. Open the OSD menu and go to the SYSTEM SETUP: Advanced> Security Settings > Change Password menu. Press MODE/ENTER. The message “INPUT CURRENT PASSWORD” appears. Enter the old password. i. If the password is correct, another message “INPUT NEW PASSWORD” displays. ii. If the password is incorrect, the password error message displays lasting for three seconds, and the message “INPUT CURRENT PASSWORD” displays for your retry.
Switching input signal The projector can be connected to multiple devices at the same time. However, it can only display one full screen at a time. When starting up, the projector automatically searches for the available signals. Be sure the Quick Auto Search function in the SOURCE menu is On if you want the projector to automatically search for the signals. To select the source: 1. 2. Press SOURCE on the projector or remote control. A source selection bar displays.
Magnifying and searching for details If you need to find the details on the projected picture, magnify the picture. Use the direction arrow keys for navigating the picture. • Using the remote control 1. Press ZOOM+/ZOOM- to display the Zoom bar. Press ZOOM+ to magnify the center of the picture. Press the key repeatedly until the picture size is suitable for your need. 2. Use the directional arrows ( , , , ) on the projector or remote control to navigate the picture. 3.
About the aspect ratio • In the pictures below, the black portions are inactive areas and the white portions are active areas. • OSD menus can be displayed on those unused black areas. 1. Auto: Scales an image proportionally to fit 4. the projector's native resolution in its horizontal or vertical width. This is suitable for the incoming image which is neither in 4:3 nor 16:9 and you want to make most use of the screen without altering the image's aspect ratio.
Optimizing the image Using Wall Color In the situation where you are projecting onto a colored surface such as a painted wall which may not be white, the Wall Color feature can help correct the projected picture’s colors to prevent possible color difference between the source and projected pictures. To use this function, go to the DISPLAY > Wall Color menu and press / to select a color which is closest to the color of the projection surface.
8. The confirmation message “Setting Saved” displays. Fine-tuning the image quality in user modes According to the detected signal type, there are some user-definable functions available when User 1 or User 2 is selected. Based on your needs, you can make adjustments to these functions by highlighting them and pressing / on the projector or remote control. Adjusting Brightness The higher the value, the brighter the image. And the lower the setting, the darker the image.
3D Color Management In most installation situations, color management will not be necessary, such as in classroom, meeting room, or lounge room situations where lights remain on, or where building external windows allow daylight into the room. Only in permanent installations with controlled lighting levels such as boardrooms, lecture theaters, or home theaters, should color management be considered.
7. 8. 9. Repeat steps 3 to 6 for other color adjustments. Make sure you have made all of the desired adjustments. Press MENU/EXIT to exit and save the settings. Setting the presentation timer Presentation timer can indicate the presentation time on the screen to help you achieve better time management when giving presentations. Follow these steps to utilize this function: 1. 2. Go to the SYSTEM SETUP: Basic > Presentation Timer menu and press MODE/ ENTER to display the Presentation Timer page.
Remote paging operations Connect the projector to your PC or notebook with a USB cable prior to using the paging function. See "Connection" on page 17 for details. You can operate your display software program (on a connected PC) which responds to page up/down commands (like Microsoft PowerPoint) by pressing PAGE UP/PAGE DOWN on the remote control. If remote paging function doesn't work, check if the USB connection is correctly made and the mouse driver on your computer is updated to the latest version.
• If you press POWER to turn off the projector without disabling panel key lock, the projector will still be in locked status the next time it is turned on. Operating in a high altitude environment We recommend you use the High Altitude Mode when your environment is between 1500 m –3000 m above sea level, and ambient temperature is between 0°C–35°C. Do not use the High Altitude Mode if your altitude is between 0 m and 1500 m and ambient temperature is between 0°C and 35°C.
Adjusting the sound The sound adjustments made as below will have an effect on the projector speaker. Be sure you have made a correct connection to the projector audio input. See "Connection" on page 17 for how the audio input is connected. Muting the sound To temporarily turn off the sound: 1. 2. 3. Press MENU/EXIT and then press / until the SYSTEM SETUP: Advanced menu is highlighted. Press to highlight Audio Settings and press MODE/ENTER. The Audio Settings page displays.
2. 3. 4. 5. 6. 7. Press MENU/EXIT and then press / until the SYSTEM SETUP: Advanced menu is highlighted. Press to highlight Network Settings and press MODE/ENTER. The Network Settings page is displayed. Highlight Wired LAN and press MODE/ENTER. Make sure the Status is Connect. Press to highlight DHCP and press / to select On. Press to highlight Apply and press MODE/ENTER. Re-enter the Network Settings page. The IP Address, Subnet Mask, Default Gateway, DNS and Mac Address settings will be displayed.
2. The remote network operation page opens. This page allows you to operate the projector as if you were using the remote control or control panel on the projector. i ii i i i. These buttons function the same as the ones on the OSD menus or remote control. See "1. DISPLAY menu" on page 43 and "Remote control" on page 11 for details. ii. To switch input source, click on your desired signal. • The Menu button can also be used to go back to previous OSD menu, exit and save menu settings.
iv. Once set, access to the tools page has been password-protected. After making the adjustments, press the Send button and the data will be saved in the projector. v. Press Exit to go back to the remote network operation page. The info page displays the information and status of this projector. Press Exit to go back to the remote network operation page. 6. 38 For more information, visit http://www.crestron.com.
Shutting down the projector 1. Press POWER on the projector or OFF on the remote control and a confirmation message will display prompting you. If you don't respond in a few seconds, the message will disappear. 2. Press POWER a second time. The POWER indicator light flashes orange, the projection lamp shuts down, and the fans will continue to run for approximately 90 seconds to cool down the projector. To protect the lamp, the projector will not respond to any commands during the cooling process.
Menu operation Menu system Please note that the on-screen display (OSD) menus vary according to the signal type selected and the projector model you are using. Main menu Sub-menu Wall Color 1. DISPLAY Aspect Ratio Keystone Position Phase H.
Main menu Sub-menu Options Timer Period Timer Display Presentation Timer Timer Position 1~240 minutes Always/1 min/2 min/3 min/ Never Top-Left/Bottom-Left/TopRight/Bottom-Right Timer Counting Count Down/Count Up Direction Sound Reminder On/Off On/Off Language 4.
Main menu Sub-menu Options High Altitude Mode On/Off Mute On/Off Volume Audio Settings Microphone Volume Power On/Off On/Off Ring Tone Normal/Economic/ Lamp Mode Smart Eco (for selective models) Lamp Settings Reset Lamp Timer Equivalent Lamp Hour Change Password Security Change Security Power On Lock Settings Settings Splash Screen Lock 2400/4800/9600/14400/19200/ Baud Rate 38400/57600/115200 5.
Description of each menu Function Description Wall Color Corrects the projected picture’s color when the projection surface is not white. See "Using Wall Color" on page 29 for details. There are several options to set the image's aspect ratio depending on your input signal source. See "Selecting the aspect ratio" on page 27 for details. Corrects any keystoning of the image. See "Correcting keystone" on page 21 for details. Displays the position adjustment page.
Function Description 1. DISPLAY menu Provides several preset patterns for various teaching purposes. Teaching Template Picture Mode Reference Mode Brightness Contrast 2. PICTURE menu Color Choose Blackboard or Whiteboard first by pressing / and press / to choose the pattern you need. Press MODE/ENTER to activate the pattern. Pre-defined picture modes are provided so you can optimize your projector image set-up to suit your program type. See "Selecting a picture mode" on page 29 for details.
Function Description 3. SOURCE menu 4. SYSTEM SETUP: Basic menu Quick Auto Search See "Switching input signal" on page 26 for details. Color Space Conversion See "Changing Color Space" on page 26 for details. Presentation Timer Reminds the presenter to finish the presentation within a certain time frame. See "Setting the presentation timer" on page 32 for details. Language Sets the language for the On-Screen Display (OSD) menus. See "Using the menus" on page 22 for details.
Function Description Direct Power On Allows the projector to turn on automatically once the power is fed through the power cord. Signal Power On Sets whether to turn the projector directly on without pressing the POWER key on the projector when the projector is in standby mode and the signal is feed through the VGA cable. Auto Power Off Allows the projector to turn off automatically if no input signal is detected after a set period of time. See "Setting Auto Power Off " on page 51 for details. 4.
Function High Altitude Mode Audio Settings 5. SYSTEM SETUP: Advanced menu Lamp Settings Security Settings Baud Rate Test Pattern Closed Caption Description A mode for operation in high altitude areas. See "Operating in a high altitude environment" on page 34 for details. Mute Volume Microphone Volume Power On/Off Ring Tone See "Adjusting the sound" on page 35 for details. Lamp Mode See "Setting Lamp Mode as Economic" on page 51 for details.
Function 5. SYSTEM SETUP: Advanced menu Standby Settings Description Network Selecting On enables the function. The projector is able to provide the network function when it is in standby mode. Microphone Selecting On enables the function. The projector can output the microphone signal when it is in standby mode and all the necessary equipment is correctly connected. See "Playing sound through the projector" on page 19 for details. Monitor Out Selecting On enables the function.
Function Description 6. INFORMATION menu Source Shows the current signal source. Picture Mode Shows the selected mode in the PICTURE menu. Current System Status Resolution Shows the native resolution of the input signal. Color System Shows input system format: NTSC, PAL, SECAM, YUV, or RGB. Equivalent Lamp Hour Displays the number of hours the lamp has been used. Firmware Version Shows the firmware version of your projector.
Maintenance Care of the projector Your projector needs little maintenance. The only thing you need to do on a regular basis is to keep the lens and case clean. Never remove any parts of the projector except the lamp. Contact your dealer if other parts need replacing. Cleaning the lens Clean the lens whenever you notice dirt or dust on the surface. • • • Use a canister of compressed air to remove dust.
Lamp information Getting to know the lamp hour When the projector is in operation, the duration (in hours) of lamp usage is automatically calculated by the built-in timer. See "Setting Lamp Mode as Economic" below for more information on Economic mode. To obtain the lamp hour information: 1. Press MENU/EXIT and then press / to highlight the SYSTEM SETUP: Advanced menu. 2. Press to highlight Lamp Settings and press MODE/ENTER. The Lamp Settings page displays. 3.
Timing of replacing the lamp When the Lamp indicator lights up red or a message appears suggesting it is time to replace the lamp, please install a new lamp or consult your dealer. An old lamp may cause a malfunction in the projector and in some instances the lamp may explode. Go to http://lamp.benq.com for a replacement lamp. The LAMP indicator light and TEMPerature warning light will light up if the lamp becomes too hot. Turn the power off and let the projector cool for 45 minutes.
Replacing the lamp • To reduce the risk of electrical shock, always turn the projector off and disconnect the power cord before changing the lamp. • To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before replacing the lamp. • To reduce the risk of injuries to fingers and damage to internal components, use caution when removing lamp glass that has shattered into sharp pieces.
8. Use the handle to slowly pull the lamp out of the projector. • Pulling it too quickly may cause the lamp to break and scatter broken glass in the projector. • Do not place the lamp in locations where water might splash on it, children can reach it, or near flammable materials. • Do not insert your hands into the projector after the lamp is removed. If you touch the optical components inside, it could cause color unevenness and distortion of the projected images. 9.
15. Connect the power and restart the projector. Do not turn the power on with the lamp cover removed. Resetting the lamp timer 16. After the startup logo, open the On-Screen Display (OSD) menu. Go to the SYSTEM SETUP: Advanced > Lamp Settings menu. Press MODE/ENTER. The Lamp Settings page displays. Highlight Reset Lamp Timer. A warning message is displayed asking if you want to reset the lamp timer. Highlight Reset and press MODE/ENTER. The lamp time will be reset to “0”.
Indicators Light Status & Description Power events Orange Green Flashing Green Orange Flashing Off Off Stand-by mode. Off Off Powering up. Off Off Off Off Normal operation. • The projector needs 90 seconds to cool down as it was abnormally shut down without the normal cooling down process. • The projector needs to cool for 90 seconds after the power is turned off. • The projector has shut down automatically. If you try to restart the projector, it will shut down again.
Troubleshooting The projector does not turn on. Cause There is no power from the power cord. Attempting to turn the projector on again during the cooling process. Remedy Plug the power cord into the AC power jack on the projector, and plug the power cord into the power outlet. If the power outlet has a switch, make sure that it is switched on. Wait until the cooling down process has completed. No picture Cause The video source is not turned on or connected correctly.
Specifications Projector specifications All specifications are subject to change without notice. Optical Control Resolution MX850UST 1024 x 768 XGA MW851UST 1280 x 800 WXGA Display system 1-CHIP DMD Lens F/Number F = 2.59 Lamp 230 W lamp RS-232 serial control 9 pin x 1 IR receiver x 2 12V trigger x 1 (Max. 1A) LAN control RJ45 x 1 USB port (Mini-B x 1) Electrical Power supply AC100–240V, 3.3 A, 50-60 Hz (Automatic) Power consumption 397 W (Max); < 0.5 W (Standby) Mechanical Weight 5.3 Kg (11.
Dimensions 339 mm (W) x 236.9 mm (H) x 322.8 mm (D) 339 322.8 236.
Wall mount installation Minimum installation requirements Computer Resolution: WXGA Image Resolution: WXGA Diagram Reference SMART Board 685 Promethean ActivBoard 387 Hitachi FXTRIO-88W Hitachi FXDUO-88W Image Diagonal (inches) D 87 87 88 88 Image Height (mm) H 1171 1171 1181 1181 Image Width (mm) W 1874 1874 1887 1887 Distance from floor to bottom of image (mm) f 900 900 900 900 Distance from screen surface to projector lens (mm) a 344 344 352 352 Distance from top case
Computer Resolution: XGA Image Resolution: XGA Diagram Reference SMART Board 660 Smart Board 680 Promethean ActivBoard 164 Image Diagonal (inches) D 64 77 64 Image Height (mm) H 975 1173 Image Width (mm) W 1300 Distance from floor to bottom of image (mm) f Distance from screen surface to projector rear case (mm) Promethean ActivBoard 178 RM ClassBoard2 77.
Minimum Ceiling Height (mm) = f + H + b + 60 + 221+ c Ceiling b 322.8 screen H 150 e a 221 20 60 60 D Projection area 180 c Wall plate W f Distance from floor to bottom of image floor 62 • The dimensions are based on the BenQ wall mount (P/N: 5J.J4V10.001). • There is 3% tolerance among these numbers due to optical component variations.
Timing chart Supported timing for PC input Resolution 640 x 480 720 x 400 800 x 600 1024 x 768 1152 x 864 1280 x 768 1024 x 576 1024 x 600 1280 x 800 1280 x 1024 1280 x 960 1360 x 768 1440 x 900 1400 x 1050 1600 x 1200 1680 x 1050 640 x 480@67Hz 832 x 624@75Hz 1024 x 768@75Hz 1152 x 870@75Hz • Mode VGA_60* VGA_72 VGA_75 VGA_85 720 x 400_70 SVGA_56 SVGA_60* SVGA_72 SVGA_75 SVGA_85 SVGA_120** (Reduce Blanking) XGA_60* XGA_70 XGA_75 XGA_85 XGA_120** (Reduce Blanking) 1152 x 864_75 1280 x 768_60* BenQ No
• The 3D timings showing above may vary depending on the EDID file and VGA display card. It is possible that the above 3D timings cannot be chosen on VGA display card.
**Supported timing for non-3D and 3D signal with Frame Sequential format. ***Supported timing for non-3D and 3D signal with Top-Bottom format. • The 3D timings showing above may vary depending on the EDID file and VGA display card. It is possible that the above 3D timings cannot be chosen on VGA display card.
Supported timing for Video and S-Video inputs Video mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Color sub-carrier Frequency (MHz) NTSC** PAL SECAM PAL-M PAL-N PAL-60 NTSC4.43 15.73 15.63 15.63 15.73 15.63 15.73 15.73 60 50 50 60 50 60 60 3.58 4.43 4.25 or 4.41 3.58 3.58 4.43 4.43 **Supported timing for non-3D and 3D signal with Frame Sequential format.
Warranty and Copyright information Limited warranty BenQ warrants this product against any defects in material and workmanship, under normal usage and storage. Proof of purchase date will be required with any warranty claim. In the event this product is found to be defective within the warranty period, BenQ's only obligation and your exclusive remedy shall be replacement of any defective parts (labor included).
