Troubleshooting | Mitsubishi Electronics FL6900U specs

Troubleshooting (continued)

No image appears on the screen. (continued)

Problem	Solution

“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 11.)
Projected images are	• Adjust BRIGHTNESS and CONTRAST in the IMAGE menu. (See page 28.)
dark.	• Replace the lamp. (See page 39.)
Projected images are	• Adjust the focus. (See pages 15 and 20.)
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 11.)
Afterimages persist on	• This phenomenon is improved by keeping projecting an evenly bright 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.
Only the motion areas	• This is caused by the computer being used. Contact the manufacturer of your
in the images supplied	computer.
from the computer
aren’t displayed.

EN-43

Image 43

Mitsubishi Electronics FL6900U user manual Troubleshooting, Images are not displayed correctly Problem Solution

Contents

FL6900 Risk of Electric Shock Do not Open When using the projector in Europe Contents Important safeguards Do not keep using the damaged projector Important safeguards Preparing your projector Checking accessoriesInserting the batteries into the remote control Removing the batteries from the remote control Overview Preparating your projectorControl area Terminal board Bottom side Remote control Reception angle Using the remote controlOperational range of the remote control Using the wired remote control Screen size and projection distance Setting up your projectorSetting up the screen When the aspect ratio of the screen is When projected images are distorted to a trapezoid Setting up your projectorAdjusting the position of the projected image When ﬁne streaks are seen on projected images Rear projection Front projection, ceiling mounting Viewing computer images Connecting the projector to a computer For monitor connection Plugging the power cordViewing computer images About DDC Remove the lens cap Projecting images AV mute When connecting to a notebook computerSetting of the resolution To stop projecting Connecting to a video player, etc Connecting the projector to video equipmentViewing video images Projector + DVD player or Hdtv decoder Viewing video imagesConnection for video equipment having an Hdmi terminal Connection for video equipment having a DVI-D terminal Plugging in the power cord EN-20 With the Feature menu Volume from the speakerSetting the aspect ratio How to change the settings With the remote control Menu operation Setup Available settings in the menus How to set the menusMenu operation Mute Mode Black / Image Lamp ModeAuto Power on On / OFF Auto Power OFF Setup Auto Password FunctionCinema Mode Auto Video Signal EN-26 Input ResolutionDescription Lamp Time LOW To sharpen or soften the projected image Sharpness Adjusting projected imagesTo adjust the brightness Contrast and Brightness To adjust the color Color and Tint Color Enhancer Adjusting projected imagesTo adjust the tone of white Color Temp About color temperature YES How to adjust the computer image LPF Progressive ﬁlter Simple method to adjust the image positionTo adjust the horizontal position To adjust the vertical position Set the image size Advanced featuresSetting procedure Set the background color To enable the password function Advanced featuresPassword function To cancel the password function To change the input source of the left or right screen To use the split modeSplit Freeze USB Mouse remote controlProjector + computer with USB connector Operation About PJLink Supervising and controlling by computerProjectorView PJLink Condition IndicatorsNormal condition Abnormal condition Procedure for setting the anti-theft alarm device Terminal cover with anti-theft alarm deviceProcedure for changing batteries Replacing the lamp Interval of lamp replacement Replacing the lamp Reset of the lamp operation timeTo replace the lamp Cleaning of the lens MaintenanceCleaning of the air-ﬁlter Cleaning of the projector and the ventilation slots No image appears on the screen Problem Solution Troubleshooting Images are not displayed correctly Problem Solution Troubleshooting Kensington Lock Others Problem Solution Speciﬁcations Replacement part option/not included in the box XGA85 Speciﬁcations Without terminal cover With terminal cover ConnectorsDimension drawings unit mm Real mode Mitsubishi Electric Corporation