Mitsubishi Electronics MH2850U user manual Troubleshooting

Page 42

Troubleshooting (continued)

No image appears on the screen. (continued)

Problem

Solution

The screen for entering

• PASSWORD FUNCTION in the FEATURE menu has been set to DISPLAY INPUT

 

to

 

the password appears.

enable the password lock.

 

J Enter the password or contact the person in charge of management of the projec-

 

tor. (See page 33.)

“NO SIGNAL” is

• Turn on the power of the connected device, or check whether there is something

displayed.

wrong with the connected device.

 

• Check whether the external device output signals. (Check this especially when the

 

external device is a notebook computer.)

 

• Check that the cable connected to the external device isn’t defective.

 

• Check that the projector is connected to the external device using the correct

 

terminals.

 

• Check that the connected device is correctly selected as the input source.

 

• When an extension cord is being used, replace it with the supplied cable and check

 

whether images are projected correctly. If images are projected correctly, use an RGB

 

signal amplifier along with the extension cord.

 

 

 

 

Images are not displayed correctly.

Problem

Solution

Projected images are

• Check that the cable connected to the external device isn’t intermittent.

shaking.

• Connect the cable’s plug with the external device’s connector firmly.

Projected images are

• Project an image containing many characters such as a help menu and press the

displaced.

AUTO POSITION button.

 

• Some computers output out-of-spec signals on rare occasion. Adjust the SIGNAL

 

menu. (See pages 30 and 31.)

Projected images are

• Adjust the projector and the screen so that they are perpendicular to each other. (See

distorted.

page 10.)

Projected images are

• Adjust BRIGHTNESS and CONTRAST in the IMAGE menu. (See page 28.)

dark.

• Replace the lamp. (See page 38.)

Projected images are

• Adjust the focus. (See pages 15 and 19.)

blurred.

• Clean the lens.

 

• Press the W or X button on the remote control to eliminate flicker.

 

• Adjust TRACKING and FINE SYNC. in the SIGNAL menu. (See page 31.)

 

• Adjust BRIGHTNESS and CONTRAST in the IMAGE menu. (See page 28.)

 

• Adjust the projector and the screen so that they are perpendicular to each other. (See

 

page 10.)

Afterimages persist on

• This phenomenon is improved by keeping projecting an evenly dark image. (Such

the screen.

“image burn-in” phenomenon where afterimages persist on the screen may occur if a

 

stationary image is kept displayed on the screen for a long time.)

Red, blue, and

• This phenomenon is unique to LCD projector and isn’t a product malfunction.

green dots appear in

(A small number of pixels always stay on or off, which are not malfunctions. More than

projected images.

99.99% of the pixels are effective.)

Black dots appear in

 

projected images.

 

Fine streaks are seen

• This is due to interference with the screen surface and is not a malfunction. Replace

on projected images.

the screen or displace the focus a little.

 

• Vertical or horizontal streak noise may appear on the projected image, depending on

 

the type of the DVD player or game console you use. In such a case, you can reduce

 

such streak noise by enabling the LPF.

Projected images

• Connect the plugs of the cables to external devices securely.

become wavy.

• Keep the projector away from devices that emit interfering radio waves.

 

• When the keystone adjustment is carried out, the image may not be displayed

 

correctly depending on the type of input signal. This isn’t a product malfunction. In

 

this case, readjust the keystone so that the amount of keystone correction is as small

 

as possible.

Hue is not appropriate.

• Check that the cables connected to the external devices are not broken.

Tint in projected

• Check that COMPUTER INPUT in the SIGNAL menu is correctly set. (See page 26.)

images is incorrect.

• Check that the cable connected to the external device isn’t broken.

Different color tint.

• When comparing images projected by two projectors, tints in the displayed images

 

may be different because of variation between their optical components. This is not a

 

malfunction.

 

• When comparing the image projected by this projector with those displayed on the

 

television or PC monitor, tints in the displayed images may be different because of

 

difference in the range of color reproducibility. This is not a malfunction.

 

 

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Contents MH2850 When using the projector in Europe Risk of Electric Shock Do not OpenContents Important safeguards Important safeguards Removing the batteries from the remote control Checking accessoriesInserting the batteries into the remote control Preparing your projectorControl area Preparating your projectorOverview Terminal boardRemote control Bottom sideAbout the laser beam Reception angle Using the remote controlOperational range of the remote control Front of projector Rear of projectorSetting up your projector Front projection, ceiling mounting Setting up your projectorWall screen Rear projectionWhen the aspect ratio of the screen is Screen size and projection distanceConnecting the projector to a computer Viewing computer imagesPlugging the power cord Viewing computer imagesAbout DDC Projecting images To stop projecting When connecting to a notebook computerSetting of the resolution AV muteWhen a TV tuner or VCR is connected Connecting the projector to video equipmentConnecting to a video player, etc Viewing video imagesViewing video images Plugging in the power cordConnecting to video equipment having a DVI-D terminal Projector + DVD player or Hdtv decoderEN-19 Volume from the speaker With the remote control Setting the aspect ratioHow to change the settings With the Feature menuMenu operation Blue Base Tone EnhancerHow to set the menus Available settings in the menusMenu operation Installation menu Feature menu Signal menu Signal Resolution Memorize menu Signal User menuInformation menu Adjusting projected images To enable the stored color temperature Adjusting projected imagesAbout color temperature Gamma modeEN-30 To adjust the vertical position LPF Progressive filterAdvanced features Setting of the image displayed during startup or mutingTo enable the password function Advanced featuresPassword function To cancel the password functionExpand Picture in Picture PinPStill Operation Mouse remote controlProjector + computer with USB connector PageUp buttonSupervising and controlling by computer Major functionsConnection Abnormal condition IndicatorsNormal condition ConditionInterval of lamp replacement Operation time is resetReplacing the lamp Replacing the lamp Reset of the lamp operation timeWhen removing the lamp from the ceiling-mounted projector To replace the lampCleaning of the projector and the ventilation slots MaintenanceCleaning of the air-filter Cleaning of the lensTroubleshooting No image appears on the screen Problem SolutionTroubleshooting Images are not displayed correctly Problem SolutionOthers Problem Solution Kensington LockReplacement part option/not included in the box SpecificationsSpecifications XGA85Connectors Dimension Drawings unit mmCOMPUTER/COMPONENT Video IN-1/IN-2 Mitsubishi Electric Corporation
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MH2850, MH2850U specifications

The Mitsubishi Electronics MH2850U is a standout model in the projector market, designed to cater to both professional and educational environments. Its impressive set of features and advanced technologies make it a versatile tool for presentations, lectures, and even home entertainment. This projector is known for its high performance and reliability, making it a preferred choice among users.

One of the key features of the MH2850U is its native WUXGA resolution (1920 x 1200 pixels), which provides exceptional clarity and sharpness. This resolution is particularly beneficial for displaying detailed visuals, graphs, and charts, making it ideal for business presentations and educational purposes. The projector's brightness level, rated at 2,850 lumens, ensures that images remain vibrant even in well-lit environments. Users can expect sharp and vivid visuals, regardless of lighting conditions.

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Overall, the Mitsubishi Electronics MH2850U stands out due to its combination of high resolution, brightness, connectivity, and versatility. Whether used in a classroom, conference room, or at home, this projector delivers excellent performance, making it a worthy investment for anyone in need of high-quality projection solutions.
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