BenQ MX820ST Hiding the image, Locking control keys, Operating in a high altitude environment

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Hiding the image

In order to draw the audience's full attention to the presenter, you can use ECO BLANK on the projector or remote control to hide the screen image. When this function is activated with an audio input connected, the audio can still be sheard.

You can set the blank time in the SYSTEM SETUP: Basic > Operation Settings > Blank Timer menu to let the projector return the image automatically after a period of time when there is no action taken on the blank screen.

If the preset time spans are not suitable for your presentation, select Disable.

No matter Blank Timer is activated or not, you can press most of the keys on the projector or remote control to restore the picture.

Locking control keys

With the control keys on the projector locked, you can prevent your projector settings from being changed accidentally (by children, for example). When the Panel Key Lock is on, no control keys on the projector will operate except POWER.

1.Go to the SYSTEM SETUP: Basic > Panel Key Lock menu, and select On by

pressing / on the projector or remote control. A confirmation message displays.

2.Highlight Yes and press MODE/ENTER to confirm.

To release panel key lock, use the remote control to enter the SYSTEM SETUP: Basic

>Panel Key Lock menu and press / to select Off.

• Keys on the remote control are still active when panel key lock is enabled.

•If you 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–30°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. The projector will be over cooled, if you turn the mode on under such a condition.

To activate the High Altitude Mode:

1.Press MENU/EXIT and then press / until the SYSTEM SETUP: Advanced menu is highlighted.

2.Press to highlight High Altitude Mode and press / select On. A confirmation message displays.

3.Highlight Yes and press MODE/ENTER.

Operation under "High Altitude Mode" may cause a higher decibel operating noise level because of increased fan speed necessary to improve overall system cooling and performance.

If you use this projector under other extreme conditions excluding the above, it may display auto shut-down symptoms, which is designed to protect your projector from over- heating. In cases like this, you should switch to High Altitude mode to solve these symptoms. However, this is not to state that this projector can operate under any and all harsh or extreme conditions.

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Contents MX818ST/MX819ST/MW820ST Table of contents Safety Instructions Important safety instructionsSafety Instructions 3000 m Feet Ceiling mounting the projector Introduction Projector featuresShipping contents Front/upper side Rear/lower side Projector exterior viewProjector Controls and functionsON/ OFF Remote control+/PAGE Network No function AutoOperating the Laser pointer Remote control effective rangeReplacing the remote control batteries Choosing a location Positioning your projectorFront Table Front CeilingObtaining a preferred projected image size Projection dimensionsMW820ST Connection ConnectionConnecting audio Connecting video source devicesTerminal name Terminal appearance BestStarting up the projector OperationAdjusting the projection angle Adjusting the projected imageAuto-adjusting the image Fine-tuning the image clarityCorrecting keystone Below is the overview of the OSD menu Using the menusUtilizing the password function Using a security cable lockSetting a password Highlight Change Security Settings and press MODE/ENTERIf you forget the password Entering the password recall procedureChanging the password Switching input signal Disabling the password functionChanging Color Space Selecting the aspect ratio Magnifying and searching for detailsAbout the aspect ratio Selecting a picture mode Using Wall ColorSetting the User 1/User 2 mode Go to the Picture Picture Mode menuFine-tuning the image quality in user modes 3D Color Management Setting a preferred color temperatureSetting the presentation timer Resetting current or all picture modesSelection Description Remote paging operations To cancel the timer, perform the following stepsFreezing the image Top-Left Bottom-Left Top-Right Bottom-RightHiding the image To activate the High Altitude ModeLocking control keys Operating in a high altitude environmentUsing the test pattern Adjusting the soundAdjusting the sound level Turning off the Power On/Off Ring ToneUsing the teaching templates Shutting down the projector Direct power offMenu system Menu operationMain menu Sub-menu Options Wall ColorBasic Advanced Description of each menu Temperature Picture ModeColor Temperature Fine Tuning 3D ColorInstallation TimerSearch Color SpaceFunction Description System Setup Basic menuOperation RemoteAltitude System Setup Advanced menu Function Description HighAudio LampReset All System Setup Advanced menu Function DescriptionStandby NetworkCurrent Information menu Function DescriptionSystem StatusCare of the projector MaintenanceLamp information Getting to know the lamp hourExtending lamp life Status Message Timing of replacing the lampReplacing the lamp Replace the lamp cover on the projector Tighten the screws that secures the lamp Cover Resetting the lamp timerLight Status & Description Power events IndicatorsLamp events Thermal eventsTroubleshooting Projector specifications SpecificationsCeiling mount installation DimensionsMinimum installation requirements Wall mount installation1171 1181 Screen Minimum Ceiling Height mm = f + H + b + 60 + 274+ cTiming chart Supported timing for PC inputKHz Supported timing for Hdmi Hdcp input Resolution Mode Frequency KHz MHzTiming Supported timing for Component-YPbPrinputNtsc Supported timing for Video and S-Video inputsLimited warranty Warranty and Copyright informationCopyright Disclaimer

MX819ST, MX820ST, MX818ST specifications

BenQ has been a prominent player in the projector market, catering to various consumer needs with innovative and high-quality solutions. Among their notable offerings are the BenQ MX818ST, MX820ST, and MX819ST projectors, specifically designed for educational institutions and small to medium-sized business environments. These models are a part of BenQ's commitment to enhancing visual learning and presentations.

The BenQ MX818ST is a short-throw projector, capable of delivering large images from a close distance. This feature proves especially beneficial in classrooms where space may be limited. With a brightness level of up to 3,100 ANSI lumens and a resolution of XGA (1024x768), it provides crisp and clear visuals, making it suitable for various lighting conditions. One of its core technologies is the DLP (Digital Light Processing) technology, which ensures vibrant colors and sharp pictures, elevating the viewing experience during lessons or presentations.

Following closely, the MX820ST builds on the strengths of the MX818ST while adding enhanced features like a higher brightness level of 3300 ANSI lumens. The MX820ST also includes BenQ’s BrightView and high contrast ratio to improve visibility and clarity, ensuring that every detail stands out regardless of ambient light. Equipped with a 1.02-1.23:1 throw ratio, it allows users to project a large screen from mere feet away. Additionally, the projector boasts multiple connectivity options, including HDMI and VGA, facilitating compatibility with various devices.

The MX819ST is another standout in this lineup, offering similar specifications to its siblings but with added features that enhance usability. This model includes improved color performance thanks to BenQ's color calibration technology, ensuring consistency in image presentation. Moreover, it offers a 10,000-hour lamp life, which reduces maintenance costs and improves efficiency by minimizing the frequency of lamp replacements. Its portability and flexible installation options make it a viable choice for both stationary and mobile presentations.

All three models are designed with user-friendly interfaces, ensuring seamless operation whether in a classroom or a boardroom. They also come equipped with advanced network management features, allowing institutions and companies to manage projector settings remotely. With eco-friendly technologies, such as energy-saving modes, these projectors help minimize environmental impact.

In summary, the BenQ MX818ST, MX820ST, and MX819ST projectors stand out in the market due to their combination of advanced technologies, user-friendly features, and robust performance. They cater to the needs of educational and business environments, providing high-quality presentations that make a lasting impact.
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