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BenQ TH681+ - page 1
TH681/TH681+ Digital Pr ojector User Manual ...
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BenQ TH681+ - page 2
Table of contents 2 Ta b l e o f c o n t e n t s Important safety instructions ........................... 3 Introduction .......................... 7 Projector featu res .......... ............. .......... .... 7 Shipping content s ............... ............... ........ 8 Projector exte rior view ........... ............ .... 9 Controls and func ...
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BenQ TH681+ - page 3
Important safety inst ructions 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 ensur e safe use of this product, it is important that you follow the instructions mentioned in th is manual and mark ed on the pr o duct. Safety Instructi ...
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BenQ TH681+ - page 4
Important safety inst ructions 4 Safety Instructions (Continued) 7. The lamp becomes extr emely hot during operation. Allow the pr ojector to cool for appro xima tely 45 minutes prior to removing t he lamp assembly for r eplacement. 8. Do not operate lamps beyond the rated lamp life. Excessive operation of lamps bey o nd the rated life could cause ...
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BenQ TH681+ - page 5
Important safety inst ructions 5 Safety Instructi ons (Continued) 13. Do not place this projector in an y of the following envir onments. - Space that is poorly ventilated or confined. Allow at least 50 cm clearance fr om walls and free flo w of air aroun d the projector . - Locations where te mperatur es ma y become excessively high, such as the i ...
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BenQ TH681+ - page 6
Important safety inst ructions 6 Safety Instructi ons (Continued) 17. Do not step on the projector or place any objects upon it. Besides pr obable ph ysical damage to the projector , doing so ma y result in accident s and possible injur y . 18. Do not place liquids near or on the projector . Liquids spill ed into the projector ma y cause it to fail ...
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BenQ TH681+ - page 7
Introduc tion 7 Intr oduction Pr ojector featur es The pr ojector offers the follo wing featur es • Full HD com patible The proje c tor is compatible with Standard Def inition TV (SDTV) 480i, 480p , 576i, 576p and High Definition TV ( HDTV) 720p , 1080i and 1080p formats, with the 1080p fo rmat pr oviding a true 1:1 image repr oduction. • Smart ...
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BenQ TH681+ - page 8
Introduction 8 Shipping contents Carefull y unpack and verify that y ou hav e all of the items shown belo w . If any of these items are missing, please contact y our place of purchase. Standard accessories The supp lied accesso ries will be suitable fo r your region, and ma y differ from those illustrated. *The warranty card is only supplied in som ...
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BenQ TH681+ - page 9
Introduc tion 9 Pr ojector exterior view 1. External control panel (See "Contr ols and funct ions" on page 10 for details.) 2. Lamp cover 3. V ent (heated air exhaust) 4. Quick-release button 5. Lens cap 6. Focus and Zoom ring 7. V ent (cool air intake) 8. Speaker grill 9. Front IR remote sensor 10. Projection lens 11. RS232 control port ...
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BenQ TH681+ - page 10
Introduction 10 Contr ols and functions Pr o jector 1. F ocus ring Adjusts the focus of the pr ojected image. 2. Zoom ring Adjusts the size of the image . 3. T op IR remote sens or 4. MENU/EXIT T urns on the On-Screen Displa y (OSD) menu. Goes back to pr evious OSD menu, exits and sa ves menu se ttings. 5. POWER T oggles the projector between stand ...
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BenQ TH681+ - page 11
Introduc tion 11 Remote contr ol 1. POWER T oggles the projector between standb y mode and on. 2. Info Shows the status information of the projector . 3. MENU/EXIT T urns on the On-Screen Displa y (OSD) menu. Goes back to previous OSD menu, exits and sa ves menu se ttings. 4. Left 5. MODE/ENTER Selects an a vailable picture setup mode. Activates th ...
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BenQ TH681+ - page 12
Introduction 12 Remote contr ol effective range The remote control m ust be held at an angle within 30 degr ees perpendicular to the projector's IR r emote control sensor(s) to function corre ctly . The distance between the remote contr ol and the sensor(s) should not exceed 8 meters (~ 26 feet). Make s ure that ther e are no obstacles betw ee ...
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BenQ TH681+ - page 13
Positioning your project or 13 P ositioning y our projector Choosing a location Y our projector is designed to be installed in one of four possible in stallation loca tions: Y our room la yout or personal prefer ence will dictate which installation locatio n you select. T ake into consideration the size and position of y our screen, the lo cation o ...
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BenQ TH681+ - page 14
Positioning your project or 14 Obtaining a pr eferr ed pr ojected image size The distance from the pr ojector lens to the screen, the zoom setting, and the video format each factors in the p rojected image size. Pr ojection dimensions Installation for a 16:9 ratio scr een The scre en aspect ratio is 16:9 and the pr ojected picture is in a 16:9 aspe ...
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BenQ TH681+ - page 15
Positioning your project or 15 Installation for a 4:3 ratio scr een The illustrations and table below are pro v ided for those users who alr ea dy ha ve 4:3 aspect ratio screens or intend to pur chase 4:3 aspect ratio scr eens to view 16:9 ratio projected images. The scre en aspect ratio is 4:3 and the pr ojected picture is in a 16:9 asp e ct ratio ...
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BenQ TH681+ - page 16
Connection 16 Connection When connecting a sig nal sour ce to the projector , be sure to: 1. T urn all equipment off bef ore making any connections. 2. Use the correct si gnal cables for each sour ce. 3. Ensure th e cables are f irmly inserted. • In the conn ections shown below , some cables ma y not be incl uded with the projector (see "Shi ...
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BenQ TH681+ - page 17
Connection 17 • If you wish to use this connection method when the proje ctor is in standby mode, make sur e the Monitor Out function is turned on in the SYSTEM SETUP: Advanced men u. See "Standby Settings" on page 45 for details. Connecting video sour ce devices Y ou need only connect the pr ojector to a video source de vice using just ...
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BenQ TH681+ - page 18
Operat ion 18 Operation Star ting up the pr ojector 1. Plug the power cord into the pr ojector and into a powe r outlet. T urn on the power outlet switch (where fitted). Check that the PO WER in dicator light on t he projector lights orange after power has been applied. Please use the original accessories (e.g. pow er cord) only with the device to ...
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BenQ TH681+ - page 19
Operation 19 Adjusting the pr ojected image Adjusting the pr ojection angle The projector is equipp ed with 1 quick-release adjuster foot and 1 rear adjuster f o ot. These adjusters change the ima ge height and projection angle. T o adjust the projector: 1. Press the quick-r elease button and lift the front of the pr ojecto r . Once the image is po ...
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BenQ TH681+ - page 20
Operat ion 20 Corr ecting k eystone K eystoning ref ers to the situation w here the projected image is noticeably wider at either the top or bottom. It occurs when the pr o j ector is not perpendicular to the screen. T o correct this, you will need to manually corr ect it following ONE of these steps. • Press / on the projector or remote control ...
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BenQ TH681+ - page 21
Operation 21 Using the menus The projector is equipp ed with On-Scr een Displa y (OSD) menus for making various adjustment s and settings. The OSD screenshots below are f or refe rence on l y , and may differ fr om the actual design. Below is the ov erview of the OSD menu. The following example describes ho w to set the OSD language. 1. Press MEN U ...
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BenQ TH681+ - page 22
Operat ion 22 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 e nsington lock, to secur e the pr ojector . Y ou can locate a K ensington lock slot on the rear side of the pr ojector . See item 23 on page 9 for details. A K ensington ...
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BenQ TH681+ - page 23
Operation 23 If you f orget the passw ord If the passw ord function is activated, y ou will be ask e d to enter the six-digit password e ver y time you turn on the projector . If you enter the wrong passw ord, the passw ord error message as pictur ed to the right appears lasting f or 3 seconds, and the INPUT PA S S W O R D message follows. Y ou can ...
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BenQ TH681+ - page 24
Operat ion 24 Disabling the passw ord function T o disable password pr otection, go back to the SY STEM SETUP: Advanced > Security Settings > Change Security Settings menu after opening the OSD menu system . Press MODE/ENTER. The messag e “INPUT P ASSW ORD” appears. Enter the current pass word. i. If the passwor d is co rr ect, the OSD me ...
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BenQ TH681+ - page 25
Operation 25 Changing Color Space In the unlik ely ev ent that you connect the pr ojector to a D VD pla yer via the projector’ s HDMI input and the pr ojected picture displa ys wrong colors, please change the color space to YUV . To d o t h i s : 1. Press MENU/EXIT and then pr ess / until the SOURCE menu is highlig hted. 2. Press to highlight Col ...
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BenQ TH681+ - page 26
Operat ion 26 2. Press Aspect repeatedl y to select an aspect rati o to suit the format of the video signal and your displa y requir e ments. • Using the OSD menu 1. Press MENU/EXIT and then pr ess / until the DISPLA Y menu is highlighted. 2. Press to highlight Aspect Ratio . 3. Press / to select an aspect ra tio to suit the format of the video s ...
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BenQ TH681+ - page 27
Operation 27 Optimizing the image Using W all Color In the situation wher e you ar e pr ojecting on to a colored surface such as a painted w all which ma y not be white, the W all Color feature can help corr ect the projected picture’ s colors to pre vent possible color diffe rence betw een the sour ce and pr ojected pictures. T o use this funct ...
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BenQ TH681+ - page 28
Operat ion 28 6. Press to select a menu item to be ch a nged and adjust the value with / . See "Fine-tuning the image quality in user modes" below for details. Fine-tuning the image quality in user modes According to the detected signal type and selected pictur e mo de, some of the below functions ma y not be available. Based on your need ...
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BenQ TH681+ - page 29
Operation 29 Setting a pr eferr ed color temperatur e T o set a preferr ed color temperature: 1. Highlight Color Temperature and select Wa rm , Normal or Cool by pr essing / on the projector or remote control. 2. Press to highlight Color Temperature F i ne Tuning an d press MODE/ ENTER . The Color Temperature Fine Tuning page appears. 3. Press / to ...
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BenQ TH681+ - page 30
Operat ion 30 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 projected picture will be selected. Incr easing its range will include red close to yellow and r ed close to magenta. 5. Press to highlight Saturation and adjust its valu ...
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BenQ TH681+ - page 31
Operation 31 4. Press to highlight Timer Position and set the timer position by pressing / . 5. Press to highlight Timer Counting Dir ection and select y our desir ed counting direction b y pres sing / . 6. Press to highlight Sound Remin der and decide if you want to activate sound reminder b y pressin g / . If you select On , a double beep sound w ...
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BenQ TH681+ - page 32
Operat ion 32 Hiding the image In order to dra w the audience's full attention to the pr esenter , you can use ECO BLANK on the projector or r emote control to hide the screen image. When this function is activated with an audio input connected, the audio can still be heard. Y ou can set the blank time in the SYSTEM SETUP: Basic > Oper atio ...
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BenQ TH681+ - page 33
Operation 33 symptoms. How ever , this is not to state that th is project or can operate under an y and all harsh or extreme conditions. Adjusting the sound The sound adjustments made as below will ha ve an effect on the projector speak er(s). Be sure y ou hav e made a correct connect ion to the pr ojector audio input. See "Connection" on ...
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BenQ TH681+ - page 34
Operat ion 34 Using the teaching templates The pr ojector provides sev eral preset patterns for various teaching purposes . T o activate the pattern: 1. Open the OSD menu and go to the DISPLAY > Teaching Template and press / to select Blackboard or White board . 2. Press / to choose the pattern y ou need. 3. Press MODE/ENTER to activate the patt ...
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BenQ TH681+ - page 35
Operation 35 Shutting down the pr ojector 1. Pr ess POWER and a confirmation message will display pr ompting you. If you don't respond in a f ew seconds, the message will disappear . 2. Press POWER a second time. The PO WER indica tor light flas hes orange , the projection la mp shuts down, and the fa ns will continue to run for appr oximately ...
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BenQ TH681+ - page 36
Operat ion 36 Menu operation Menu system Please note that the on-screen displa y (OSD) menus var y according to the signal type selected and the projector model y ou are usin g. Main menu Sub-men u Options 1. DISPLAY Wall Color Off/Light Yellow/Pink /L ight Green/Blue/ Blackboard Aspect Ratio Auto/Real/ 4:3/16:9/16: 10 Keystone Position Phase H. Si ...
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BenQ TH681+ - page 37
Operation 37 Main menu Sub-menu Options 4. SYSTEM SETUP: Basic Presentation Timer Timer Period 1~240 minute s Timer Display Alwa ys/3 min/2 min/1 min/Ne ver Timer Position T op-Left/Bottom-Left/T op -Right/ Bottom-Righ t Timer Counting Direction Count Down/Cou nt Up Sound Reminder On/Off On / Off Language Projector Installation Front Table/Rear Tab ...
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BenQ TH681+ - page 38
Operat ion 38 Note that the menu items ar e available when th e projector detects at least one valid signal. If there is no equipment connected to the pr ojector or no signal detected, limited menu items are accessible. Main menu Sub-menu Options 5. SYSTEM SETUP: Advanced High Altitude Mode On/Off Audio Settings Mute On/Off Volume Power On/Off Ring ...
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BenQ TH681+ - page 39
Operation 39 Description of each menu Function Description Wall Color Corre cts the pr ojected picture’ s color when the projection s urface is not white. See "Using W all Color" on page 27 for details. Aspect Ratio There are sev era l options to set the image's aspect ratio depending on your input signal source. See "Selectin ...
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BenQ TH681+ - page 40
Operat ion 40 Function Description 3D This projector f eatures a 3D function which enables y ou to enjoy the 3D movies, videos, and sporting events in a more r eal istic wa y by presentin g the depth of the images. Y ou need to wear a pair of 3D glasses to vi ew the 3D images. 3D Mode The default setting is Auto and the pr ojector automatically cho ...
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BenQ TH681+ - page 41
Operation 41 Function Description Picture Mode Pre-de fined pictur e modes are pr ovided so you can optimize your projector image set-up to su it your program type. See "Selecting a picture mode" on page 27 for details. Reference Mode Selects a picture mode that best suits y our need for the image quality and further fine-tune the image b ...
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BenQ TH681+ - page 42
Operat ion 42 Function Description Quick Auto Search See "Switching input signal" on page 24 for details. Color Space Conversion See "Changing Color Space" on page 25 for details. Presentation Timer Reminds the presenter to finis h the presentation within a certain time frame. See "Setting the presentation timer" on pa ...
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BenQ TH681+ - page 43
Operation 43 Function Description Operation Settings Direct Power On Allows the projector to turn on au tomatically once the power is f ed through the pow er cord. Signal Power On Sets whether to turn the projecto r directly on without pr essing PO WER or ON when the pr ojecto r is in standby mode and the signal is feed thr o ugh the V GA cable . A ...
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BenQ TH681+ - page 44
Operat ion 44 Function Description High Altitude Mode A mode for operation in high altitude areas. See "Operating in a high altitude envir onment" on page 32 for de tail s. Audio Settings See "Adjusting the sound" on page 33 for details. Lamp Settings Lamp Mode See "Setting the Lamp Mode" on page 47 for details. Reset ...
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BenQ TH681+ - page 45
Operation 45 Function Description Standby Settings Monitor Out Selecting On enables the function. The pr ojector can output a V GA signal when it is in s tandby mode and the COMPUTER 1 jack is corr ectly connected to devices. S ee "Connection" on page 16 for h ow to mak e the connection. Audio P ass Throug h The projector can pla y sound ...
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BenQ TH681+ - page 46
Maintenance 46 Maintenance Car e of the projector Y our projector needs little maintenance. The on ly thing y ou need to do on a r egular basis is to keep th e lens and case clean. Nev er remove an y parts of the projector except the lamp . Contact your dealer if other parts need replacing. Cleaning the lens Clean the lens whenev er you notice dirt ...
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BenQ TH681+ - page 47
Maintenance 47 Lamp information Getting to know 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 . T otal (equivalent) lamp hour = 1.63 x (hours used in No rmal mode) + 1.30 x (hours used in Economic mode) + 1.00 x (hours used in SmartEco mode) T o obta in the ...
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BenQ TH681+ - page 48
Maintenance 48 Timing of r eplacing the lamp When the Lamp indicat or lights up r ed or a message appears suggesting it i s time to replace the lamp , please install a new lamp or consult your dealer . An old lamp may cause a malfunction in the pr ojector and in some instances the lamp ma y explode. Go to http://lamp .benq.com for a r eplacement la ...
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BenQ TH681+ - page 49
Maintenance 49 Replacing the lamp • T o reduce the ri sk of electrical shock, alwa ys turn the projector off and disconnect the po wer cord before changing the l amp. • T o reduce the risk of sev e re burns, allow the pr ojector to cool for at least 45 minutes before r eplacing the lamp. • T o reduce the risk of injuries to fingers and damage ...
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BenQ TH681+ - page 50
Maintenance 50 12. Connect the pow er and restart the pr ojector . Do not turn the power on with the lamp cover r emoved. Resetting the lamp tim er 13. After the startup logo , open the On-Sc reen Displa y (OSD) menu. Go to the SYSTEM SETUP: Advanced > Lamp Settin gs menu. Pre ss MODE/ENTER . 6. Use the handle to slow ly pull the lamp out of the ...
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BenQ TH681+ - page 51
Maintenance 51 The Lamp Settin gs page appears. Highlight Reset Lamp Timer . A warning message appears asking if y ou want to reset the lamp timer . Highlight Reset and pres s MODE/ENT ER . The lamp time will be reset to “0”. Do not reset if the lamp is not new or replaced as this could cause damage . ...
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BenQ TH681+ - page 52
Maintenance 52 Indicators Light Status & Description Po w e r e v e n t s Orange Off Off Stand-by mode. Green Flashing Off O ff P owering up . Green Off Off Normal operation. Orange Flashing Off O ff Normal power -down cooling Red Off Off Download Green Off Red CW star t fail Red Flashing Off Off Scaler shutdown fail (data abort) Lamp ev ents O ...
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BenQ TH681+ - page 53
Troubleshooting 53 T r oubleshooting The projector does not turn on. No picture Blurr ed image Remote contr ol does not work The passw ord is incorrect Cause Remedy There is n o pow er from the p ower cord. Plug the po wer cor d into the A C pow er jack on the pro jector , and plug the po wer cor d into the power outlet. If the power outlet has a s ...
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BenQ TH681+ - page 54
Specifications 54 Specifications Pr ojector specifications All specifications ar e subject to change without notice . Optical Resolution 1920 (H) x 1080 (V) Display system 1-CHIP DMD Lens F/Number F = 2.59 ~ 2.87, f = 16.88 ~ 21.88 mm Lamp 210 W lamp Electrical Power supply AC100–240V , 3.1 A, 50–60 Hz (Automatic) Power consumpt ion 315 W (Max) ...
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BenQ TH681+ - page 55
Specificatio ns 55 Dimensions 311.81 mm (W) x 104.7 mm (H) x 244.12 mm (D) Ceiling mount installation 311.81 244.12 104.7 Unit: mm 626.11 582.2 537.9 25 95.21 168.59 239.77 111.28 311.58 137 160 115 127.7 80 Ceiling Mount scr ew: M4 (Max L = 25 mm; Min L = 20 mm) Unit: mm ...
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BenQ TH681+ - page 56
Specifications 56 Timing char t Suppor ted timing for PC input • *Supported timing for 3D signal in Frame Sequential , Top Bottom and Side by Side formats. **Suppor ted timing for 3D signal in Frame Sequential fo rmat . ***Supported timing for 3D signal in Top Bottom and Side by Side fo rmat. Resolution Mode Ve r t i c a l Fre qu e nc y (Hz) Hori ...
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BenQ TH681+ - page 57
Specificatio ns 57 • The timings showing above ma y not be supported due to EDID file and VGA gra p hic card limitations. It is possible that some timings cannot be chosen. Suppor ted timing for HDMI (HDCP) input • *Supported timing for 3D signal in Frame Sequential , Top Bottom and Side by Side formats. **Suppor ted timing for 3D signal in Fra ...
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BenQ TH681+ - page 58
Specifications 58 • The timings showing above ma y not be supported due to EDID file and VGA gra p hic card limitations. It is possible that some timings cannot be chosen. *Suppor ted timing for 3D signal in Frame Sequential form at. **Supported timing for 3D signal in Top Bottom , Frame Packing and Side by Side formats. ***Suppor ted timing for ...
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BenQ TH681+ - page 59
Specificatio ns 59 Suppor ted timing for Video and S-Video inputs *Suppor ted timing for 3D signal in Frame Sequential form at. Video mode Horizontal Freq ue nc y ( kH z) Ve r t i c a l F r e q u e n c y (Hz) Color sub-carrier Fr equency (MHz) NTSC* 15.73 60 3.58 P AL 15.63 50 4.43 SECAM 15.63 50 4.25 or 4.41 P AL-M 15.73 60 3.58 P AL-N 15.63 50 3. ...
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BenQ TH681+ - page 60
Warranty and Co pyright informati on 60 W arranty and Cop yright information Limited warranty BenQ warrants this pr oduct against any de fects in material an d workman ship , under normal usage and storag e. Proof of pur chase date will be required with an y warranty claim. In the ev ent this product is found to be defective within the war r an ty ...
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