Mitsubishi Electronics XD250U-ST user manual Others, Maintenance, Cleaning of the lens

Troubleshooting (continued)

Others

	Problem	Solution
The exhaust vents emit warm air.		• This air comes out after cooling the inside of the projector. You may feel hot, but this is not a malfunction.
		• Check that the volume isn’t set to low.
No audio is output.		• Check the AUDIO INPUT setting.
		• When the external device is connected with an HDMI cable, set the audio output of the device to PCM output.
		• The microcomputers inside the projector may be wrongly operating because of noise.
The menu can’t be used.		∃ Press the POWER button to turn off the lamp and unplug the power cord from the wall outlet. Wait about
		10 minutes, plug the power cord in, and try again.
		• This indication appears when the ambient temperature rises high. When the ambient temperature stays high,
		the lamp goes out.
"TEMPERATURE!!" is displayed.		∃ Eliminate any causes of the rise in the ambient temperature.
		• This indication appears when the air inlet or outlet grille is blocked. When they are kept blocked, the lamp
		goes out.
		∃ Remove the objects blocking the air inlet or outlet grille.
The	mark appears.	• This mark appears when ineffective operation is carried out. This isn’t a product malfunction.
		• Check that the batteries are loaded in the remote control or the batteries are not weak. (See page 8.)
The remote control doesn’t function easily or at all.		• Check that the remote control sensor isn’t exposed to direct sunlight or fluorescent light. (See page 8.)
		• Use the remote control within its operation range. (See page 8.)
		• Use the remote control at least 10 cm away from the projector.
		• PASSWORD FUNCTION in the FEATURE menu has been set to MENU ACCESS to enable the password
The SOURCE button on the control panel doesn’t		lock.
function.		∃ Cancel the password lock or contact the person in charge of management of the projector.
		(See page 31.)
Abnormal sound is heard.		• Because the color wheel spins at a high speed, metallic sounds may be heard in rare occasions. Such symp-
		tom is not a malfunction.

ENGLISH

If the following problem occurs after the lamp is replaced, check the following first.

Problem		Solution
The projector does not turn on.	• Fit the lamp cover securely. (See page 34.)
	•	Reset the lamp operating time. (See page 34.)
The STATUS indicator blinks.	•	Reset the lamp operating time. (See page 34.)

Maintenance

Warning:

Do not use flammable solvents (benzene, thinner, etc.) and flammable aerosols when cleaning the projector body and lens. Flammable substances may ignite causing fire or breakdown while the lamp is illuminating.

Caution:

Be sure to turn off the lamp and unplug the power cord from the wall outlet before you perform any maintenance on the projector.

Cleaning of the projector and the ventilation slots

Use a soft cloth to clean the projector and the ventilation grilles. When the grilles become dirty, wipe them with a soft cloth dampened with diluted mild detergent, and then wipe them with a dry cloth.

To protect the surface of the projector from fading or deteriorating:

•Do not spray insecticide on or inside the projector.

•Do not use benzin or thinner to clean it.

•Do not let rubber or plastic materials contact with projector.

Cleaning of the lens

Use a standard lens-cleaning brush or a piece of lens tissue dampened with lens cleaning fluid. The lens surface is fragile. Use only recommended, nonabrasive lens-cleaning materials. Do not touch the lens with your fingers.

EN-37