Mitsubishi WD-52631 manual TV Power On/Off Symptom Remarks, Picture Symptom Remarks

98Appendices

Appendix D: Troubleshooting, continued

TV Power On/Off

	Symptom	Remarks
1.	TV takes an excessively long time to power	• When switched on, the TV needs time to boot up, just as a
	on.	computer does. The TV’s lamp also requires a few moments
		to heat up to full brightness.
		• TV Energy Mode is set to Low Power. To change TV Energy
		Mode to Fast Power On: Press MENU, open the Setup menu,
		highlight the Fast Power On radio button.
2.	You cannot program the TV to turn on auto-	• The TV may be locked.
	matically (Timer function)	• The clock may not be set.
		• A time-delayed recording may have started.
		• TV Energy Mode is set to Low Power. Change to Fast Power
		On in Setup menu.
3.	The TV will not turn on after being plugged in.	If green light on front panel is blinking, wait for at least one minute
		for the light to turn off, then press POWER again.
4.	TV turned itself off and the light on the front	• Momentary power fluctuation caused the TV to turn off to
	panel started to blink.	prevent damage. Wait for the green light to stop flashing and
		turn the TV on again.
		• If the TV does not stay on, use the System Reset button on
		the front panel. If this happens frequently, obtain an AC line
		power conditioner/surge protector.
		• An unusual digital signal may have been received, triggering a
		protection circuit. Wait for the light to stop flashing and turn TV
		on.
5.	TV will not power off.	Use the System Reset button.
Picture
	Symptom	Remarks
1.	Picture does not look like a high-definition	Not all signals are high-definition signals. To receive high-defini-
	picture.	tion programming from your cable or satellite provider, you must
		subscribe to the provider’s high-definition service. Some over-
		the-air broadcasts are in high-definition and can be received with
		a high-quality antenna suited to your location.
2.	Picture has become noticeably dimmer.	• Adjust picture brightness and contrast to maximum levels.
		• The lamp is nearing the end of its life. Order a new lamp. See
		Appendix C for ordering information and replacement instructions.
3.	Split Screen does not display a sub-picture.	• Make sure the Parental Lock is off.
		• Not all inputs can be displayed as a sub-picture.
4.	CableCARD channel is not shown as Split	CableCARD allows only one channel at a time to be used.
	Screen sub-picture when CableCARD
	channel is the main image.
5.	There is a large black or gray rectangle on	The TV’s analog closed captioning has been set to “text” mode in
	the screen.	the Captions menu. Turn off because there is no text information
		being broadcast.
6.	You cannot view a picture when playing a	Check your VCR’s owner’s guide for further troubleshooting.
	VHS tape.
7.	VCR or DVD player’s on-screen menus jitter	Possible cause: Many VCRs and DVD players provide on-screen
	up and down.	menus at only half-resolution. These lower-resolution graphics
		may appear to jitter up and down when the TV converts them to
		high-definition graphics.