Mitsubishi Electronics WD-65C8 manual General TV Operation Symptom Remarks

82Appendices

Appendix F: Troubleshooting, continued

General TV Operation

	Symptom	Remarks
1.	A fan is running even while the TV is powered	The room is too warm. When the TV is off, internal components
	off.	continue to draw power and must be cooled by the fan.
2.	The fan gets louder after the TV is shut off.	Normal operation. The fan speeds up to cool the lamp quickly
		after the TV has been shut off.
3.	The TV remote control does not work.	• Check that the batteries are fresh and installed correctly.
		• Check that the slide switch on the remote is set to TV.
		•	Be no more than 20 feet from the TV when using the remote control.
		• Program the remote control to operate the TV or other device.
		• Reset the remote control.
		• If you have a custom home theater controller but prefer to use
			the TV’s remote control, unplug the controller cable from the
			TV’s IR—NetCommand® Output/External Controller Input.
4.	When I try to use the remote control, the	Replace the batteries.
	POWER key blinks five times.
5.	TV does not respond to the remote control or	•	Unplug the AC power cord for 10 seconds.
	to control-panel buttons and TV will not power	•	Use the System Reset button.
	on or off.
6.	When a device is selected from the Input Selec-	• Make sure the selected device is turned on.
	tion menu, the screen is blue or black (no signal	• Begin play of the device.
	source).
7.	You have forgotten your Lock menu pass code.	See Appendix B, “Bypassing the Parental Lock,” page 65.
8.	Rating restrictions are not working.	Open the Parental Lock menu and:
		•	Verify that the U.S. Ratings or Other Ratings setting is On.
		•	Check the Lock Time/Unlock Time to check if rating restric-
			tions are disabled.
		•	Rating restrictions apply only to content on ANT 1 and ANT 2,
			and VIDEO composite video jacks.
9.	On-screen displays appear each time you	Normal TV operation.
	change a function.
10.	A warning message appeared on screen	•	Room temperature has exceeded proper levels. Cool the
	stating, “TV will shut down in a few seconds.		room.
	Please check if the air flow is blocked.”	•	The TV has overheated. Clear blocked air vents and ensure
			at least four inches of clearance on all sides of the TV.
		•	Clean the air filter on the lamp cartridge See page 75.
11.	I have turned on CEC for my HDMI devices but	•	Turn off all NetCommand HDMI control signals from the TV. Open the
	control is erratic and I wish to disable it.		Inputs > NetCommand HDMI Control menu and set to Off (page 48).
		• Turn off the TV’s NetCommand HDMI control for the specific
			device. Open the Inputs > Name menu, select the device, select
			Control Off (page 48).
		• Disable CEC on the device itself. See the device’s instructions.
		• If the problem persists, do the following:
			1. Disconnect the device from the TV.
			2. Open the Inputs > Name menu. Highlight the device and
			select Delete to remove the device from the Input Selection
			menu.
			3. Reconnect the device to the TV and Auto Input Sensing will
			recognize the device as a non-CEC device.