BenQ 9H.J6L77.34E инструкция обслуживания

MX503H/MS507H/TW519 Digital Projector MS517/MX518/MW519/MS517F/MX518F Us er Ma n u a l[...]

Table of conten ts 2 Important safety instructions ................... 3 Introduction .................. 7 Projector featu res .......... ........... .......... ...... 7 Shipping content s ........... ............. .......... .... 8 Projector exte rior view ...... ........... .......... 9 Positioning your projector ..................... 15 Choosing[...]

Important safety ins tructions 3 Impor tant safety instructions Y our projector is designed and tested to meet the latest st andards for safety of information technology equipment. Howev er , to ensure saf e use of this product, it is important that you follow the instructions mentioned in th is manual and mark ed on the pr oduct. Safety Instructio[...]

Important safety instruction s 4 Safety Instructions (Contin ued) 7. The lamp becomes extr emely hot during operation. Allow the projector to cool for a ppro x imately 45 minutes prior to r emoving the lamp assembly f or replacement. 8. Do not operate lamps beyond the rated lamp life. Excessive operation of lamps beyond the rated life could cause t[...]

Important safety ins tructions 5 Safety Instructions (Continu ed) 13. Do not place this projector in an y of the following envir onments. - Space that is poorly v entilated or confined. Allow at least 50 cm clearance from walls and free flow of air ar ou nd the projector . - Locations where temperatur es may become excessively high, such as the ins[...]

Important safety instruction s 6 Safety In struct ions (Con tinued) 16. Do not stand the projector on end vertically . Doing so ma y ca use the projector to fall ov er , causing injur y or resulting in damage to the projector . 17. Do not step on the projector or place any objects upon it. Besides pr oba ble ph ysical damage to the projector , doin[...]

Introduction 7 Intr oduction Pr ojector featur es This model is one of the best pr ojecto rs a v ailable in the w orld. Y ou can enjoy the best performance video quality with up to 300-inch projection acr oss various devices such a s PC, laptop , D VD a nd VCR even document camera to bring all possibility to life. The pr ojector offers the fol lo w[...]

Introduction 8 Shipping contents Carefull y unpack and v erify that you ha ve all of the items sho wn below . If an y of these items are missing, please contact y our place of purchase. Standard accessories The supplied accessories will be suitable for y our region, and ma y differ from those illustrated. *The warranty card is only supplied in some[...]

Introduction 9 Pr ojector exterior view 1. External control panel (See "Projector" on page 10 for details.) 2. Lamp cov er 3. Zoom ring 4. Focus ring 5. Lens cov er 6. V ent (heated air exhaust) 7. Fr ont IR re mote sensor 8. Projection lens 9. Quick-release button 10. Audio input jack 11. S-Video input jack 12. RGB (PC)/Component video ([...]

Introduction 10 Contr ols and functions Pr ojector 7. V olume /Arro w keys ( / Left, / Right) Adjusts the sound lev el. When the On-Scr een Displa y (OSD) menu is activated, th e #7 and #9 k eys ar e used as directional arr ows to select the desired menu items and to mak e adjustments. See "Using the menus" on page 28 for details. 8. ECO [...]

Introduction 11 Ceiling mounting the projector W e want you to ha ve a pleasant experience using your BenQ pr ojector , so we need to bring this safety matter to your attent ion to prevent possible damage to person and property . If you intend to mount your projector on the ceiling, we str o ngly recommend that you use a proper f itting BenQ projec[...]

Introduction 12 Remote contr ol 1. Info Showing the stat us information of the projector . 2. Menu/Exit T urns on the On-Screen Displa y (OSD) menu. Goes back to pre vious OSD menu, exits and sa ves menu settings . See "Using the menus " on page 28 for details. 3. Left/ Right When the On-Scr een Displa y (OSD) menu is activated, th e #3 a[...]

Introduction 13 Infra-Red (IR) remote contr ol sensor is located on the front of the projector . The remote control must be held at an angle within 15 degrees perpendicular to the pr ojector's IR remote contr ol sensor to function correctly . The distance between the remote control and the sensor should not exceed 8 meters ( ~ 26 feet). Make s[...]

Introduction 14 Replacing the remote contr ol batter y 1. T o open the battery cov er , turn the remote contr ol over to vie w its back, push on the finger grip on the cover and slide it up in the direction of the arrow as illustrated. The cover will slide off. 2. Remove any existing batte ries (if necessar y) and install two AAA batteries observin[...]

Positioning your projector 15 P ositioning y o ur pr ojector Choosing a location Y our room la yout or personal preference will dictate which installation location you select. T ake into consideration the size and position of y our screen, the lo cation of a suitable power outlet, as w ell as the location and distance between the pr o jector and th[...]

Positioning your projector 16 Obtaining a pr eferr ed pr ojected imag e siz e The distance fr om the pr ojecto r lens to the scr een, the zoom setting (if a vailable), and the video format each factors in the projected image size. Pr ojection dimensions Refer t o "Dimensions" on page 69 for the center of lens dimensions of this projector [...]

Positioning your projector 17 MW519/TW519 The screen aspect ratio is 16:10 and the pr ojected picture is 16:10 For example, if you are using a 120 -inch screen, the a verage pr ojection distance is 4333 mm and with a vertical offset of 242 mm. If your measur ed projection distance is 5.0 m (5000 mm), the closest match in the "Projection distan[...]

Connection 18 Connection When connecting a sig nal sour ce to the proj ector , be sure to: 1. T urn all equipment off bef ore making an y connections. 2. Use the correct si gnal cables for each sour ce. 3. Ensure th e cables are f irmly inserted. • In the connections shown belo w, some cab les ma y not be included with the projector (see "Sh[...]

Connection 19 Connecting a computer or monitor Connecting a computer The projector can connect to both IBM® co mpatibles an d Macintosh® computers. A Mac adapter is needed if you ar e connect ing legacy version Macintosh computers. T o connect the pr ojector to a notebook or desktop computer : 1. T ake the supplied V GA cable and connect one end [...]

Connection 20 Connecting Video sour ce de vices Y ou need only conne ct the pr ojector to a Vide o source device using just one of the abov e connecting methods, howe ver each pro vides a differ ent level of video quality . The method you choose will most likel y depend upon the a vailability of m atching terminals on both the projector and the Vid[...]

Connection 21 Connecting a HDMI sour ce device The projector pr ovides a HDMI input jack that allows y ou to connect it to a HDMI source device lik e a D VD pla yer , a DTV tuner or a displ a y . HDMI (High-Definition Multimedia Inte rface) supports uncompressed video data transmission between compatible devices like DTV tuners , D VD play ers and [...]

Connection 22 Connecting a Component Video sour ce de vice Examine your Video sour ce device to determin e if it has a set of unuse d Component Video output jacks a v ailable: • If so , you can continue with this pr ocedure. • If not, you will need to reassess which me thod you can use to connect to the device. T o connect the pr ojector to a C[...]

Connection 23 Connecting an S-Video/co mposite sour ce de vice Examine your Video sour ce device to determine if it has an unuse d S-Video/composite output jack a vailable: • If it has both jacks, use the S-Video output jack for connection as the S-Video terminal pr ovides better picture qualit y than the Video terminal. • If it has either of t[...]

Operation 24 Operation Star ting up the pr ojector 1. Plug the power cord into the pr ojector and into a power outlet. T urn on t he power outlet switch (where f itted). Check that the PO WER indicator light on the projector lights orange after power has been applied. • Please use the original acce ssori es (e .g. power cable) only with the devi [...]

Operation 25 Y ou can also press Source on the projector or r emote control to select your desired input signal. See "Switching input signal" on page 32 for details. • If no signal is detected fo r 3 minutes, the projector au tomatically enters ECO BLANK mode. Adjusting the pr ojected imag e Adjusting the pr ojection angle The projector[...]

Operation 26 Use build-in test pattern Y ou can adjust the image shape and fo cus status by obs er ving the input signal c ontent, or using the test pattern build-in O SD manual from OSD or r emote control for better observe the shape changed. Open the OS D me nu and go t o the SYSTEM SETUP: Advanced > Test Pat tern > On . Press MODE/ENTER . [...]

Operation 27 Corr ecting k eystone K eystoning r efers to the situ ation wher e the projected image is notice ably wider at either the top or bottom. It occurs when the proj e ctor is not perpendicular to the screen. T o corr ect this, besides adjusting the height of the projector , you will need to manually corr ect it following one of these steps[...]

Operation 28 Using the menus The projector is equipp ed with On-Screen Displa y (OSD) menus for making various adjustment s and settings. Below is the ov erview of the OSD menu. The following example describes ho w to set the OSD language. 1. Press MEN U/EXI T on the pr ojector or remote contr ol to turn the OSD menu on. 3. Press to highlight Langu[...]

Operation 29 Securing the pr ojector Using a security cable lock The projector has to be installed in a safe pl ace to prev ent theft. Otherwise, purchase a lock, such as the K ensington lock, to secur e the projector . Y ou can locate a K ensington lock slot on the rear side of the pr ojector . See item 17 on page 9 for details. A K ensington secu[...]

Operation 30 If y o u forg et the passw ord If the passw ord function is activated, yo u will be asked to enter the six-digit password e very time you turn on the projector . If you enter the wrong passw ord, the passw ord err or message as pictured to the right displa ys lasting for three seconds, and the message 'INPUT P ASSW ORD ' foll[...]

Operation 31 6. Y ou ha ve successfull y assigned a new passw ord to the projector . Re member to enter the new passw ord next time th e projector is started. 7. T o leav e the OSD men u, press MENU/EXIT. Disabling the pass w ord function T o disable passw o rd pr otection, go back to the SYSTEM SETUP: Advan ced > Security Settings > Power on[...]

Operation 32 Switching input signal The projector can be connected to multiple de vices at the same time . Howe ver , it can only displa y one full screen at a time. When star ting up, the projector automatically searches f or the a vailable signals. Be sure the Quick Auto Search function in the SOURCE menu is On (which is the default of this proje[...]

Operation 33 Magnifying and sear ching for details If you need to find th e details on the projected pictur e, magnify the picture. Use the direction ar row k eys for na vigating the picture. • Using the r emote contr ol 1. Press Digital Zoom +/- to displa y the Zoo m bar . 2. Press Digital Zoom + to magnify the center of the picture. Pres s the [...]

Operation 34 1. Press MENU/EXIT and then pr ess / until the DISPLAY m enu is highlighted. 2. Press to highlight Aspect Ratio . 3. Press / to select an aspect ra tio to suit the format of the video signal and your displa y requirements. About the aspect ratio 1. Auto : Scales an image proportionally to fit the projector's native r esolution in [...]

Operation 35 Optimizing the imag e Selecting a pictur e mode The projector is pr eset with several pr edefined picture modes so that y ou can choose one to suit your operating environment and input signal picture type. T o select an operation mode that suits your need, you can follow one of the following steps. •P r e s s MODE/ENTER on the remote[...]

Operation 36 Using W all Color In the situation wher e y ou are projecting on to a colored surface such as a pai nted wall which ma y not be white, the Wall Color feature can help cor rect th e projected pictur e’ s color to prev ent possible color difference betw een the source and pr ojected pictures. T o use this function, go to the DISPLAY &g[...]

Operation 37 *About color t emperatur es: There ar e many diff erent sh ades that are cons ider ed to be "white" for various purposes. One of the common methods of r epresenting white color is kn own as the “color temperature”. A white color with a low color temperature appears to be reddish white. A white color with a high color temp[...]

Operation 38 Please ref er 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 pur e red in the pr ojected picture will be selected. Incr easing its range will include red close to yellow and r ed close to magenta. 5. Press to highligh t Saturation and a djust its va[...]

Operation 39 Setting the pr esentation timer The presentation timer can indicate the pr esentation time on the screen to help you achiev e better time management when giving presentations. F ollow these steps to utilize this function: 1. Press Timer S et up on the remote contr o l or go to t he SYSTEM SETUP: Basic > Presentatio n Timer m enu an [...]

Operation 40 T o cancel the timer , perform the fo llo wing steps. • Using the r emote control. Press Timer On and pr ess / to highlig ht Off and press MODE/ENTER . •U s i n g t h e O S D m e n u . 1. Go to the SYSTEM SETUP: Basic > Presentation Timer menu and highlight Off . Press MODE/ENTER . A confirmation message displa ys. 2. Highlight [...]

Operation 41 Hiding the imag e Press th e Eco Blank button from pr ojector or remote control to turn off the image for a period of time with up to 70% lamp power sa ving. Press any k ey on the projector or remote contr ol to restore the image. The w ord " Eco Blank " a ppears at the scr een while the image is hidden. When th is f unction [...]

Operation 42 Operating in a high altitude en vir onment W e recommend you use the High Alti tude Mode when your en vironmen t is 1500 m – 3000 m above sea le vel, and ambient temperature is between 0°C–35°C. Do not use the High Altitude Mode if your altitude is betw e en 0 m and 1500 m and ambient temperature is between 0°C and 35°C. The pr[...]

Operation 43 U s e Te a c h i n g Te m p l a t e Making writing on the board easier for teache rs, you can use build-in template b y OSD or rem o t e c o nt ro l. Open the OSD menu and go to the DISPLAY > Teaching Template . Choice Blackboar d/ Whitebo ard . > Off / Letter Formation/ W or ksheet / Coordinate Chart . The T eaching T emplate d [...]

Operation 44 P ersonalizing the pr ojector menu displa y The On-Screen Displa y (OSD) menus can be set according to your pr eferences. The following settings do not affect the pr ojection settings, operation, or performance . • Menu display Time in the SYSTEM SETUP: Basic > Menu Settings menu sets the length of time the OSD will remain active [...]

Operation 45 Shutting do wn the pr ojector 1. Press POWER and a confirmation message displa ys pr ompting y ou. If you don't r espond in a few seconds, the message will disappear . 2. Press POWER a s econd time . The PO WE R indicator ligh t flashes orange , the projection lamp shuts down, and the fans will continue to run for appr oximately 9[...]

Operation 46 Menu operation Menu system Please note that the on-screen displa y (OSD) menus var y acco rding to the signal type selected. Main menu S ub-menu Options 1. DISPLAY Wall Color Off /Light Yellow/Pink/Light Green/ Blue/Blackbo ard Aspect Ratio Auto /Real/4: 3/16:9/16: 10 Keystone Position Phase H. Size Digital Zoom 3D 3D mode Auto/T op Bo[...]

Operation 47 4. SYSTEM SETUP: Basic Presentation Timer Timer Period 1~240 min utes Timer Display Alwa ys /3 min/2 min/1 min/Nev er Timer Position Top-Left /Bottom-Left /Top-Right/ Bottom-Right Timer Counting Direction Count Down /Count Up On/Off Ye s /No Language Projector Installation Front Tabl e /Rear Table/Rear Ceiling/Front Ceiling Menu Settin[...]

Operation 48 Note that the m enu items are available when th e projector detects at least one valid signal. If there is no equipment connected to the pr oj ector or no signal detected, limited menu items are accessible. 5. SY STEM SETUP: Advanced High Altitude Mode On/Off Y es/ No Audio Settings Mute On/ Off Volume 0~10 Lamp Settings Lamp Mode Norm[...]

Operation 49 Description of each menu • The default values listed in this manual, especiall y on pages 49-57 , are for r eference only . They ma y vary between the projectors due to the continuous impro vement to the products. FUNCTION DESCRIPTIO N Wall Color Corr ects the pr ojected picture’ s color when the pr ojection surface is not white. S[...]

Operation 50 FUNCTION DESCRIPTION 3D This projector f eature s a 3D function which enables you to enjoy the 3D movies, videos, and sporting ev ents in a more realistic wa y by presentin g the depth of the images. Y ou need to wear a pair of 3D glasses to view the 3D images. 3D Mode The default setting is Au to and the projector automatically choose[...]

Operation 51 FUNCTION DESCRIPTION Picture Mode Pre- defined pictur e modes ar e provided so y ou can optimize y our projector image set-up to suit y our program type. See "Selecting a picture mode" on page 35 for details. Reference Mode Selects a picture mode that best s uits your need f or the image quality and further fine-tune the imag[...]

Operation 52 FUNCTION DESCRIPTION Brilliant Color See "Adjusting Brilliant Color" on page 36 for det ail s. Color Temperature See "Selecting a Color T emperature" on page 36 f or details. Color Temperature Fine Tuning See "Setting a pr eferr e d color temperature" on page 37 for details. 3D Color Manageme nt See "[...]

Operation 53 FUNCTION DESCRIPTION Presentation Timer Reminds the presenter to finish the presentation within a certain time frame. See "Setting the presentation timer" on page 39 for details. Language Sets the language for the On-Scr een D ispla y (OSD) menus. See "Using the menus" on page 28 for details. Projector Installation [...]

Operation 54 FUNCTION DESCRIPTION Operation Settings Dire ct P ow er On Selecting On enables the function. See "Starting up the pr ojector" on page 24 for details. Auto P ow er Off Allows the projector to turn off automatically if no input sig nal is detected after a set period of time . See "Setting Auto Pow er Off" on page 59 [...]

Operation 55 FUNCTION DESCRIPTION High Altitude Mode A mo de fo r oper ati on in high alt itud e areas . Se e "Operating in a high altitude envir onment" on page 42 for details. Audio Settings Allows you to enter the audio setting menu. Mute Sets the mute function. Volume Adjusts the audio volume lev el. Lamp Settings Lamp Mode See "[...]

Operation 56 FUNCTION DESCRIPTION Closed Caption Closed Caption En able Activates the function by selecting On when the selected input signal carries closed captions. • Captions: An on-screen displa y of the dialogue , narration, and sound effects of TV programs and videos that are closed captioned (usually marked as "CC" in TV listings[...]

Operation 57 FUNCTION DESCRIPTION Current System Status Source Shows the current signal source. Picture Mode Shows the selected mode in the PICTURE menu. Resolution Shows the native r esolution of the input signal. Lamp Mode Sh ows th e cu rren t l am p m ode . 3D Format Shows the cur rent 3D mode. Color Sys tem Shows input system format, NTSC , P [...]

Maintenance 58 Maintenance Car e of the projector Y our projector needs little maintenance. The on ly thing y ou need to do on a regu lar basis is to keep th e lens and case clean. Nev er remo ve any parts of the projector except th e lamp. Contact y our dealer if other parts need replacing. Cleaning the lens Clean the lens whenev er you notice dir[...]

Maintenance 59 Lamp information Getting to kno w the lamp hour When the projector is in operation, the durati on (in hours) of lamp usage is automatically calculated by the built-in timer . The method of calculating the equivalent lamp hour is as follows: T otal (equivalent) lamp hour = 1 (hours used in Economic mode) + 4/3 (hours used in normal mo[...]

Maintenance 60 increments. If th e preset time lengths ar e not suitable for your pr esentation, select Disable . The pr ojector will not automatically shut down in a cer tain time period.[...]

Maintenance 61 Timing of r eplacing the lamp When the Lamp indicat or lights up r ed or a message appears suggesting it is time to replace the lamp , please install a new lamp or consult your dealer . An old lamp ma y cause a malfunction in the pr ojector and in some instances the lamp may explode. Do not attempt to replace the lamp yourself . Cont[...]

Maintenance 62 Replacing the lamp • Hg - Lamp contains m er cur y . M anag e in accordance with local disposal la ws. See www .la mprecycle.org. • If lamp replacement is performed while the projector is suspended upside-do wn from the ceiling, make su re that no one is underneath the lamp socket to a void an y possible injur y or damage to the [...]

Maintenance 63 3. Remove the lamp cov er by (a) sliding the cov er toward the side of the projector and (b) lifting it off. • Do not turn the power on with the lamp cov er remov ed. • Do not inser t your fing ers between the lamp and the projector . The sharp edges inside the projector ma y cause injuries. 4. Loosen the scre ws that secure the [...]

Maintenance 64 11. Restart the projector . Do not turn the power on wi th the lamp cover r emoved. Resetting the lamp timer 12. After the startup logo , open the On-Screen Displa y (OSD) menu. Go to the SYSTEM SETUP: Advanced > Lamp Sett ings menu. Pr ess Mode/Enter . The Lamp Settings page displays. Pr ess to highlight Reset lamp timer and pres[...]

Maintenance 65 Indicators Light Status & Description PO WER TEMP LAMP Po w e r e v e n t s Orange Off Of f Stand-by mode Green Flashing Off Off P owering up Green Off Off Normal operation Orange Flashing Off Off Normal power -down cooling Red Off Off Download Green Off Red CW start fail Red Flashing Off Off Scaler shutdown fail (data abord) Red[...]

Maintenance 66 Green Flashing Green Flashing Off Thermal IC #2 I2C Connection err or[...]

Troubleshooting 67 T r oubleshooting The projector does not turn on. No picture Blurr ed image Remote contr ol does not work The passw ord is incorr ect Cause Remedy There is n o power fr om the power cab le. Plug the po wer cor d into the A C inlet on the projector , and pl ug the power cord into the power outlet. If the power outlet has a switch,[...]

Specifications 68 Specifications All specifications ar e subject to change without notice. Lamp life res ults will vary depending on envir onmental conditions and usa ge. Optical Resolution (MS517/MS517F/MS507H) 800 x 600 SV GA (MX518/MX518F/MX503H) 1024 x 768 XGA (MW519/TW519) 1280 x 800 WXGA Displa y system 1-CHIP DMD Lens F/Number (MS517/MX518/M[...]

Specifications 69 Dimensions 301.6 mm (W ) x 111.3 mm ( H) x 219.2 mm (D) Ceiling mount installation 301.6 219.2 111.3 76 70.0 80.0 196.0 196.0 181.0 71.9 301.6 21.0 81.0 57.5 162.1 Ceiling mount scr ews: M4 x 8 (Max. L = 8 mm) Unit: mm[...]

Specifications 70 Timing char t Supported timing for PC input • *Supported timing for 3D signal with Fram e Sequential, T op Bottom and Side by Side format. **Supported timing for 3D signal with Frame Sequential format. ***Supported timing for 3D signal with T op Bottom and Side by Side format. • The timings sho wing abo ve ma y not be suppor t[...]

Specifications 71 Supported timing for HDMI (HDCP) input • *Supported timing for 3D signal with Fram e Sequential, T op Bottom and Side by Side format. **Supported timing for 3D signal with Frame Sequential format. ***Supported timing for 3D signal with T op Bottom and Side by Side format. Resolution Mode Ve r t i c a l Freq ue nc y (Hz) Horizont[...]

Specifications 72 • The timings sho wing abo ve ma y not be suppor ted due to EDID file and V G A graphic card limitations. It is possib le that some timings cannot be chosen. *Supported timing for 3D signal with Frame Sequential format. **Supported timing for 3D signal with T op Bottom and Fr ame P a cking format. ***Supported timing for 3D sign[...]

Specifications 73 Supported timing for Component-YPbPr input • *Supported timing for 3D signal with Frame Sequential format. • Displa ying a 1080i(1125i)@60 Hz or 1080i(1125i)@50Hz signal ma y result in slight image vibration. Supported timing for Video and S-Video input *Supported timing for 3D signal with Frame Sequential format. Timing Resol[...]

Specifications 74 Support ed 3D signal for HDMI (HDCP) input Video timing PC timing Resolution Timing Horizontal frequency (KHz) Ve r t i c a l frequency (Hz) 3D Field Sequential 3D frame packing 3D top bottom 3D side by side 720 (1440) x 480 480i 15.73 59.94 ◎ 720 x 480 480p 31.47 59.94 720 (1440) x 576 576i 15.63 50 720 x 576 576p 31.25 50 1280[...]

Specifications 75 Supported 3D signal for D-SUB inpu t PC timing 1280 x 800 WXGA _60 59.81 49.702 ◎◎ ◎ WXGA_75 74.934 62.7 95 WXGA_85 84.88 71.554 WXGA_120 (Reduce Blanking) 119.909 101.563 ◎ 1280 x 1024 SXGA_60 60.02 63.981 ◎◎ SXGA_75 75.025 79.9 76 SXGA_85 85.024 91.1 46 1280 x 960 1 280 x 960_60 60 6 0 ◎◎ 1280 x 960_85 85.002 85.[...]

Specifications 76 Supported 3D signal for Video and S-Video input 1280 x 720 1 280 x 720_60 60 4 5 ◎◎ ◎ 1280 x 720_120 120 90 ◎ 1280 x 768 1 280 x 768_60 (Reduce Blanking) 60 47.396 ◎◎ ◎ 1280 x 768_60 59.87 47.776 ◎◎ ◎ 1280 x 800 WXGA _60 59.81 49.702 ◎◎ ◎ WXGA_75 74.934 62.7 95 WXGA_85 84.88 71.554 WXGA_120 (Reduce Blanki[...]

Warranty and Copyright information 77 W arran ty and Cop yright information P atents This BenQ pr ojector is cov ered b y the following patents: U.S. paten ts 6,837,608; 7,275,834; 7,18 1,318; TW patents 202690; 2054 70; I228635; I259932; China Patents ( 中国发明专利 ) ZL01143168.7; ZL03119907.0; ZL200510051609.2 Limited warranty BenQ warrant[...]