Mitsubishi Electronics HC4900 Troubleshooting, No image appears on the screen Problem Solution

Page 38

Troubleshooting

Before asking for repair of the projector, check the following. If the symptom persists, stop using the projector, be sure to unplug the power plug, and then contact your dealer.

No image appears on the screen.

Problem

Solution

 

 

 

 

Power can not be

• Check whether the indicators are on or off and how they are lightning.

 

turned on.

POWER

STATUS

Solution

 

 

 

 

Connect the power cord to the projector.

 

Off

Off

Plug the power cord into a wall outlet.

• If any objects are blocking the air inlet or outlet grill, re move them and carry out the following.

Off

1.

Unplug the power cord from the wall outlet.

2.

Make sure that the projector has cooled off.

3.Plug the power cord into the wall outlet.

4.Press the POWER button.

If any objects are blocking the air inlet or outlet grille, remove them.

 

 

 

 

Don’t expose the air outlet grilles to hot air emitted from a heating appliance.

 

Blinking

 

Check whether the filter is clogged with dirt or dust.

Steady red

orange

 

JClean the filter, if clogged.

 

 

 

 

 

• After the STATUS indicator stops blinking, press the POWER button.

 

 

 

 

 

If you unplug the power cord while the fan is rotating, the lamp may not turn on about one

 

 

 

 

 

Blinking

minute when you plug the power cord next time.

The lamp can’t turn on again for one minute after it goes out.

green

• Press the POWER button several times.

 

 

 

 

 

 

 

 

 

 

Replace the lamp. (The lamp is at the end of its life.)

 

 

 

 

 

 

Steady red

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Attach the lamp cover on the bottom.

 

 

 

 

 

 

Off

 

 

 

 

 

 

 

 

 

 

 

 

Unplug the power cord from the wall outlet and contact your dealer .

 

 

 

 

 

 

 

 

 

 

 

 

 

Blinking

Steady

 

 

 

red/green

 

or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blinking

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No image appears on

• Check that the lens cap is removed.

the screen.

• It may take about one minute for the lamp to light up.

The lamp fails to light up on rare occasions. In such a case, wait for a few minutes and then try again.

If the projector was turned off before the lamp was cooled down sufficiently last time, the fan may start rotating and the POWER button may not work after the power cord is plugged. After the fan stops rotating, press the POWER button to turn back on the POWER indicator.

Check that the intake vent is clean.

Set SCART INPUT in the FEATURE menu to OFF. (See page 27.)

Check that the lamp cover is closed. (See page 36.)

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

When an extension cable is being used, replace it with the supplied cable for check. When images are displayed correctly, add an RGB signal amplifier to the extension cable.

Check the operation manual of the video device for its connection.

Power turns off.

• This problem may occur when the intake vent and/or exhaust vents are blocked. (In

 

such a case, the STATUS indicator brinks orange.)

 

J Remove the objects blocking the intake vent and/or exhaust vents and then carry

 

 

out the following procedure.

 

1.

Wait for the intake fan and/or exhaust fan to stop. (Wait until the STATUS indicator

 

 

goes out.)

 

2.

Unplug the power cord from the wall outlet.

 

3.

Wait about 10 minutes.

 

4.

Plug the power cord into the wall outlet.

 

5.

Press the POWER button.

 

• When the STATUS indicator is steady red, it is indicating that the lamp should be

 

replaced. Replace the lamp in this case.

 

• Check that AUTO POWER OFF has been set to OFF.

 

• If the lamp has deteriorated, it may go out after a while it illuminates.

EN-38

Image 38
Contents HC4900 When using the projector in Europe Risk of Electric Shock Do not OpenContents Important safeguards Important safeguards Preparing your projector Checking accessoriesInserting the batteries into the remote control Control area Preparing your projectorOverview Terminal panelAdjustment feet Remote controlUsing the picture quality adjusting buttons Bottom sideReception angle Using the remote controlOperational range of the remote control Front of projector Rear of projectorBasic setup Setting up your projectorSetting up the screen Adjusting the projection angleTrigger terminal Setting up your projectorFront projection, ceiling mounting Rear projectionScreen size and projection distance When the aspect ratio of the screen isWhen the aspect ratio of the image is Basic home theater system connection Connecting the projector to video equipmentViewing video images PreparationWhen a TV tuner or VCR is connected Connecting to a video player, etcConnecting to a DVD player or Hdtv decoder Viewing video imagesConnection for video equipment having an Hdmi terminal Connection for video equipment having a DVI-D terminalPlugging in the power cord Projecting images To stop projecting Setting the aspect ratio ZOOM1 ZOOM2 StretchWith the Feature menu See page 25 for menu setting How to change the settingsWith the remote control Viewing computer images Connecting the projector to a computerPlugging the power cord About DDCViewing computer images Projecting imagesAuto Position button When connecting to a notebook computerExample of the setting procedure for external output Menu operation Display InputMenu operation How to set the menusAvailable settings in the menus Image menuInstallation menu Feature menu Signal menu User menuAV memory To store the settingsTo enable the stored image quality settings Information menuTo adjust the color Color and Tint Adjusting projected imagesTo adjust the brightness Contrast and Brightness To sharpen or soften the projected image SharpnessAbout color temperature Adjusting projected imagesTo adjust the tone of white Color Temp To enable the stored color temperatureHigh To adjust the ratio of change in brightness Gamma ModeTo enable the stored gamma mode MIDTo adjust the vertical position LPFTo enable the password function Advanced featuresPassword function To cancel the password functionInterval of lamp replacement Replacing the lampReplacing 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 Normal condition IndicatorsStatus Condition Possible Solution Abnormal conditionDimension drawings unit mm SpecificationsSpecifications Computer IN/COMPONENT Video Hdmi ConnectorsReplacement part Option/not included in the box DVI-D HdcpMitsubishi Projector Contact Information