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BenQ Mh680 Users Manual

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    							Introduction 11
    Remote control
    1. POWER
    Toggles the projector between standby 
    mode and on.
    2. Info
    Shows the status information of the 
    projector.
    3. MENU/EXIT
    Turns on the On-Screen Display (OSD) 
    menu. Goes back to previous OSD menu, 
    exits and saves menu settings.
    4. Left
    5. MODE/ENTER
    Selects an available picture setup mode.
    Activates the selected On-Screen Display 
    (OSD) menu item.
    6. ECO BLANK
    Used to hide the screen picture.
    7. Keystone/Arrow keys ( / Up,  /
    Down)
    Manually corrects distorted images 
    resulting from an angled projection.
    8. SmartEco
    Displays the lamp mode selection bar. 
    9. Aspect
    Selects the display aspect ratio.10. Page Up/Page Down
    Operate your display software program (on 
    a connected PC) which responds to page up/
    down commands (like Microsoft 
    PowerPoint).
    11. Digital Zoom (+, -)
    Magnifies or reduces the projected picture 
    size.
    12. Timer On
    Activates or displays an on-screen timer 
    based on your own timer setting.
    13. Timer Set up
    Enters presentation timer setting directly.
    14. 3D settings
    Enters 3D settings directly.
    15. AUTO
    Automatically determines the best picture 
    timings for the displayed image.
    16. Right
    When the On-Screen Display (OSD) menu 
    is activated, the #4, #7, and #16 keys are 
    used as directional arrows to select the 
    desired menu items and to make 
    adjustments.
    17. SOURCE
    Displays the source selection bar.
    18. Volume +/-
    Adjusts the sound level.
    19. Mute
    Toggles projector audio between on and off.
    20. Freeze
    Freezes the projected image.
    21. Quick Install
    Quickly selects several functions to adjust 
    the projected image and displays the test 
    pattern.
    22. CC
    Displays the video term description on 
    screen which is provided for hard-of-hearing 
    viewers.
    23. Teaching template
    Enters Teaching template setting directly.
    2
    3
    4
    8
    9
    11
    1213
    15
    17
    1920
    21
    2322
    16
    14
    10
    65
    77
    1
    18
    18
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    							Introduction 12
    Remote control effective range
    The remote control must be held at an angle within 30 degrees perpendicular to the 
    projectors IR remote control sensor(s) to function correctly. The distance between the 
    remote control and the sensor(s) should not exceed 8 meters (~ 26 feet).
    Make sure that there are no obstacles between the remote control and the IR sensor(s) on 
    the projector that might obstruct the infra-red beam.
    Replacing the remote control batteries
    1. To open the battery cover, turn the remote control over to view 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 batteries (if necessary) and install two AAA batteries observing 
    the battery polarities as indicated in the base of the battery compartment. Positive 
    (+) goes to positive and negative (-) goes to negative.
    3. Refit the cover by aligning it with the base and sliding it back down into position. Stop 
    when it clicks into place.
    •  Avoid leaving the remote control and batteries in an excessive heat or humid environment like the 
    kitchen, bathroom, sauna, sunroom or in a closed car.
    •  Replace only with the same or equivalent type recommended by the battery manufacturer.
    •  Dispose of the used batteries according to the manufacturers instructions and local environment 
    regulations for your region.
    •  Never throw the batteries into a fire. There may be danger of an explosion.
    •  If the batteries are dead or if you will not be using the remote control for an extended period of time, 
    remove the batteries to avoid damage to the remote control from possible battery leakage.
    •  Operating the projector from the front
    Ap
    p
    rox.
     +
    30
    º
    •  Operating the projector from the top
    Ap
    pr
    ox. +30
    º
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    							Positioning your projector 13
    Positioning your projector
    Choosing a location
    Your projector is designed to be installed in one of four possible installation locations: 
    Your room layout or personal preference will dictate which installation location you select. 
    Take into consideration the size and position of your screen, the location of a suitable 
    power outlet, as well as the location and distance between the projector and the rest of 
    your equipment.1. Front Table
    Select this location with the projector 
    placed on the table in front of the screen. 
    This is the most common way to position 
    the projector for quick setup and 
    portability.
    2. Front Ceiling
    Select this location with the projector 
    suspended upside-down from the ceiling in 
    front of the screen.
    Purchase the BenQ Projector Ceiling 
    Mount Kit from your dealer to mount your 
    projector on the ceiling.
    Set Front Ceiling in the SYSTEM 
    SETUP: Basic > Projector Installation 
    menu after you turn the projector on.3. Rear Ceiling
    Select this location with the projector 
    suspended upside-down from the ceiling 
    behind the screen.
    Note that a special rear projection screen 
    and the BenQ Projector Ceiling Mount Kit 
    are required for this installation location.
    Set Rear Ceiling in the SYSTEM 
    SETUP: Basic > Projector Installation 
    menu after you turn the projector on.
    4. Rear Table
    Select this location with the projector 
    placed on the table behind the screen.
    Note that a special rear projection screen 
    is required.
    Set Rear Table in the SYSTEM SETUP: 
    Basic > Projector Installation menu 
    after you turn the projector on.
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    							Positioning your projector
    14
    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.
    Projection dimensions 
    Installation for a 16:9 ratio screen
     The screen aspect ratio is 16:9 and the projected picture is in a 16:9 aspect ratio
     
     
    
    
    Floor Installation
    : Screen             : Center of lens
    
    
     
    
    
    Ceiling Installation
    : Screen             : Center of lens
    Screen dimensionsProjection distance  [mm]Lowest/
    Highest lens 
    position   [mm]
    Diagonal
    
    [inch (mm)] Height 
    
    [mm]Width
    
    [mm]Min 
    distance 
    (with max 
    zoom)
    AverageMax 
    distance 
    (with min 
    zoom)
    40 (1016) 498 886 1013 1165 1316
    25
    50 (1270) 623 1107 1266 1456 1646 31
    60 (1524) 747 1328 1519 1747 1975 37 
    70 (1778) 872 1550 1772 2038 2304 44 
    80 (2032) 996 1771 2025 2329 2633 50 
    90 (2286) 1121 1992 2278 2620 2962 56 
    100 (2540) 1245 2214 2532 2911 3291 62 
    110 (2794) 1370 2435 2785 3203 3620 68 
    120 (3048) 1494 2657 3038 3494 3949 75 
    130 (3302) 1619 2878 3291 3785 4278 81 
    140 (3556) 1743 3099 3544 4076 4608 87 
    150 (3810) 1868 3321 3797 4367 4937 93 
    160 (4064) 1992 3542 4051 4658 5266 100 
    170 (4318) 2117 3763 4304 4949 5595 106 
    180 (4572) 2241 3985 4557 5241 5924 112 
    190 (4826) 2366 4206 4810 5532 6253 118 
    200 (5080) 2491 4428 5063 5823 6582 125 
    235 (5969) 2926 5202 5949 6842 7734 146 
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    							Positioning your projector 15
    Installation for a 4:3 ratio screen
    The illustrations and table below are provided for those users who already have 4:3 aspect 
    ratio screens or intend to purchase 4:3 aspect  ratio screens to view 16:9 ratio projected 
    images.
     The screen aspect ratio is 4:3 and the projected picture is in a 16:9 aspect ratio
    All measurements are approximate and may vary from the actual sizes. 
    BenQ recommends that if you intend to permanently in stall the projector, you should physically test the 
    projection size and distance using the actual projector in  situ before you permanently install it, so as to make 
    allowance for this projectors optical characteristics. Th is will help you determine the exact mounting position 
    so that it best suits your installation location.
     
    
     
    
    
    Floor Installation
    : Screen             : Center of lens
    
    
    
     
    
     
    Ceiling Installation
    : Screen             : Center of lens
    Screen dimensionsProjection distance  
    [mm]Lowest/
    Highest  lens 
    position  
    [mm]
    Image 
    height  
    [mm]
    Diagonal
    
    [inch (mm)] Height
    
    [mm]Width
    
    [mm]Min 
    distance 
    (with 
    max 
    zoom)
    AverageMax 
    distance 
    (with 
    min 
    zoom)
    40 (1016) 610 813 929 1069 1208 23 457
    50 (1270) 762 1016 1162 1336 1510 29 572
    60 (1524) 914 1219 1394 1603 1813 34 686
    70 (1778) 1067 1422 1627 1871 2115 40 800 
    80 (2032) 1219 1626 1859 2138 2417 46 914 
    90 (2286) 1372 1829 2091 2405 2719 51 1029 
    100 (2540) 1524 2032 2324 2672 3021 57 1143 
    110 (2794) 1676 2235 2556 2940 3323 63 1257 
    120 (3048) 1829 2438 2788 3207 3625 69 1372 
    130 (3302) 1981 2642 3021 3474 3927 74 1486 
    140 (3556) 2134 2845 3253 3741 4229 80 1600 
    150 (3810) 2286 3048 3486 4008 4531 86 1715 
    160 (4064) 2438 3251 3718 4276 4833 91 1829 
    170 (4318) 2591 3454 3950 4543 5135 97 1943 
    180 (4572) 2743 3658 4183 4810 5438 103 2057 
    190 (4826) 2896 3861 4415 5077 5740 109 2172 
    200 (5080) 3048 4064 4647 5345 6042 114 2286 
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    							Connection 16
    Connection
    When connecting a signal source to the projector, be sure to:
    1. Turn all equipment off before making any connections.
    2. Use the correct signal cables for each source.
    3. 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. The rear connecting jacks available on the 
    projector vary with each projector model.
    •  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 notebooks documentation to find your notebooks key combination.
    •  The D-Sub output only works when an appropriate D-Sub input is made to the COMPUTER 1 jack.
    1. VGA cable
    2. VGA to DVI-A cable
    3. USB cable
    4. Component Video to VGA (D-Sub) 
    adapter cable
    5. S-Video cable6. Video cable
    7. Audio L/R cable
    8. Audio cable
    9. USB flash drive/USB wireless dongle
    10. HDMI cable
    7888412163
    9
    105
    Notebook or desktop computer
    Speakers A/V device
    Monitor
    (DVI)
    (VGA)
    oror
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    							Connection 17
    •  If you wish to use this connection method when the projector is in standby mode, make sure the 
    Monitor Out function is turned on in the SYSTEM SETUP: Advanced menu. See Standby Settings 
    on page 46 for details.
    Connecting video source devices
    You need only connect the projector to a video source device using just one of the 
    connecting methods, however each provides a different level of video quality. The method 
    you choose will most likely depend upon the availability of matching terminals on both the 
    projector and the video source device as described below:
    Connecting audio
    The projector has built-in mono speaker(s) which are designed to provide basic audio 
    functionality accompanying data presentations for business purposes only. They are not 
    designed for, nor intended for stereo audio reproduction use as might be expected in 
    home theater or home cinema applications. Any stereo audio input (if provided), is mixed 
    into a common mono audio output through the projector speaker(s).
    The built-in speaker(s) will be muted when the AUDIO OUT jack is connected.
    •  The projector is only capable of playing mixed mono audio, even if a stereo audio input is connected. See 
    Connecting audio on page 17 for details.
    •  If the selected video image is not displayed after the projector is turned on and the correct video source 
    has been selected, check that the video source device is turned on and operating correctly. Also check 
    that the signal cables have been connected correctly.
    Te r m i n a l  n a m eTerminal appearancePicture quality
    HDMI
    Best
    Component Video
    Better
    S-Video
    Good
    Video
    Normal
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    							Operation 18
    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 to start the projector. As soon as the lamp lights up, a Pow e r  
    On Ring Tone will be heard. 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.
    (If necessary) Rotate the focus ring to adjust the image clearness.
    To turn off the ring tone, see Turning off the Power On/Off Ring Tone on page 33 
    for details.
    If the projector is still hot from previous activity, it will run the cooling fan for approximately 90 seconds 
    before energizing the lamp.
    3. If the projector is activated for the first 
    time, select your OSD language following 
    the on-screen instructions.
    4. If you are prompted for a password, press 
    the arrow keys to enter a six-digit 
    password. See Utilizing the password 
    function on page 22 for details.
    5. Switch all of the connected equipment on.
    6. The projector will start to search for input 
    signals. The current input signal being 
    scanned appears in the upper left corner of 
    the screen. If the projector doesnt detect 
    a valid signal, the message “No Signal” will 
    continue displaying until an input signal is 
    found.
    You can also press SOURCE on the 
    projector or remote control to select your 
    desired input signal. See Switching input 
    signal on page 24 for details.
    •  If the frequency/resolution of the input signal exceeds the projectors operating range, you will see the 
    message “Out of Range” displayed on the background screen. Please change to an input signal which is 
    compatible with the projectors resolution or set the input signal to a lower setting. See Timing chart on 
    page 57 for details.
    •  If no signal is detected for 3 minutes, the projector automatically enters ECO BLANK mode.
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    							Operation 19
    Adjusting the projected image
    Adjusting the projection angle
    The projector is equipped with 1 quick-release adjuster foot and 1 rear adjuster foot. 
    These adjusters change the image height and projection angle. To adjust the projector:
    1. Press the quick-release button and lift the 
    front of the projector. Once the image is 
    positioned where you want it, release the 
    quick-release button to lock the foot in 
    position.
    2. Screw the rear adjuster foot to fine-tune the 
    horizontal angle.
    To retract the foot, hold up the projector while 
    pressing the quick-release button, then slowly lower 
    the projector. Screw the rear adjuster foot in a 
    reverse direction.
    If the projector is not placed on a flat surface or the 
    screen and the projector are not perpendicular to 
    each other, the projected image becomes 
    trapezoidal. To correct this situation, see 
    Correcting keystone on page 20 for details.
    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.
    Fine-tuning the image size and clarity
    21
    Do not look into the lens while the 
    lamp is on. The strong light from the 
    lamp may cause damage to your eyes.
    Be careful when you press the quick-
    release button as it is close to the 
    exhaust vent where hot air comes 
    from.
    1. Adjust the projected image to the 
    size that you need using the zoom 
    ring. 2. Sharpen the image by rotating the 
    focus ring.
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    							Operation 20
    Correcting keystone
    Keystoning refers to the situation where the projected image is noticeably wider at either 
    the top or bottom. It occurs when the projector is not perpendicular to the screen. 
    To correct this, you will need to manually correct it following ONE of these steps.
    •  Press  /  on the projector or remote 
    control to display the Keystone correction page. 
    Press   to correct keystoning at the top of 
    the image. Press   to correct keystoning at 
    the bottom of the image.
    •  Using the OSD menu
    1. Press MENU/EXIT and then press  /  until the DISPLAY menu is highlighted.
    2. Press  to highlight Keystone and press MODE/ENTER. The Keystone 
    correction page appears.
    3. Press   to correct keystoning at the top of the image. Press   to correct 
    keystoning at the bottom of the image.
    Press/.Press /.
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