BenQ MX820ST, MX819ST, MX818ST user manual Troubleshooting

Page 54

Troubleshooting

The projector does not turn on.

Cause

Remedy

 

 

 

Plug the power cord into the AC power jack on

There is no power from the power cord.

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.

 

 

Attempting to turn the projector on again

Wait until the cooling down process has

during the cooling process.

completed.

 

 

No picture

 

Cause

Remedy

The video source is not turned on or

Turn the video source on and check that the signal

connected correctly.

cable is connected correctly.

 

 

The projector is not correctly connected

Check the connection.

to the input signal device.

 

 

 

The input signal has not been correctly

Select the correct input signal with the SOURCE

selected.

key on the projector or remote control.

 

 

The lens cover is still closed.

Open the lens cover.

Blurred image

 

Cause

 

Remedy

 

 

 

The projection lens is not correctly

 

Adjust the focus of the lens using the focus ring.

focused.

 

 

 

 

 

 

The projector and the screen are not

 

Adjust the projection angle and direction as well

aligned properly.

 

as the height of the projector if necessary.

 

 

 

The lens cover is still closed.

 

Open the lens cover.

Remote control does not work

 

Cause

Remedy

The battery is out of power.

Replace the battery with new ones.

There is an obstacle between the remote

Remove the obstacle.

control and the projector.

 

 

 

You are too far away from the projector.

Stand within 8 meters (26 feet) of the projector.

The password is incorrect

 

Cause

Remedy

 

 

You do not remember the password.

Please see "Entering the password recall

procedure" on page 24 for details.

 

 

 

54 Troubleshooting

Image 54
Contents MX818ST/MX819ST/MW820ST Table of contents Important safety instructions Safety InstructionsSafety Instructions 3000 m Feet Ceiling mounting the projector Projector features IntroductionShipping contents Projector exterior view Front/upper side Rear/lower sideControls and functions Projector+/PAGE Remote controlON/ OFF Network No function AutoRemote control effective range Operating the Laser pointerReplacing the remote control batteries Front Table Positioning your projectorChoosing a location Front CeilingProjection dimensions Obtaining a preferred projected image sizeMW820ST Connection ConnectionTerminal name Terminal appearance Connecting video source devicesConnecting audio BestOperation Starting up the projectorAuto-adjusting the image Adjusting the projected imageAdjusting the projection angle Fine-tuning the image clarityCorrecting keystone Using the menus Below is the overview of the OSD menuSetting a password Using a security cable lockUtilizing the password function 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 Magnifying and searching for details Selecting the aspect ratioAbout the aspect ratio Setting the User 1/User 2 mode Using Wall ColorSelecting a picture mode Go to the Picture Picture Mode menuFine-tuning the image quality in user modes Setting a preferred color temperature 3D Color ManagementSetting the presentation timer Resetting current or all picture modesSelection Description Freezing the image To cancel the timer, perform the following stepsRemote paging operations Top-Left Bottom-Left Top-Right Bottom-RightLocking control keys To activate the High Altitude ModeHiding the image Operating in a high altitude environmentAdjusting the sound level Adjusting the soundUsing the test pattern Turning off the Power On/Off Ring ToneUsing the teaching templates Direct power off Shutting down the projectorMain menu Sub-menu Options Menu operationMenu system Wall ColorBasic Advanced Description of each menu Color Temperature Picture ModeTemperature Fine Tuning 3D ColorSearch TimerInstallation Color SpaceOperation System Setup Basic menuFunction Description RemoteAudio System Setup Advanced menu Function Description HighAltitude LampStandby System Setup Advanced menu Function DescriptionReset All NetworkSystem Information menu Function DescriptionCurrent StatusMaintenance Care of the projectorLamp information Getting to know the lamp hourExtending lamp life Timing of replacing the lamp Status MessageReplacing the lamp Replace the lamp cover on the projector Resetting the lamp timer Tighten the screws that secures the lamp CoverLamp events IndicatorsLight Status & Description Power events Thermal eventsTroubleshooting Specifications Projector specificationsDimensions Ceiling mount installationWall mount installation Minimum installation requirements1171 1181 Minimum Ceiling Height mm = f + H + b + 60 + 274+ c ScreenTiming chart Supported timing for PC inputKHz Resolution Mode Frequency KHz MHz Supported timing for Hdmi Hdcp inputSupported timing for Component-YPbPrinput TimingSupported timing for Video and S-Video inputs NtscCopyright Warranty and Copyright informationLimited warranty 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.