Mitsubishi Electric WD-57733 Owner's Manual page 73

Appendix E: Troubleshooting, continued
General TV Operation
Symptom
1. A fan is running even while the TV is powered
off.
2. The TV remote control does not work.
3. When I try to use the remote control, the
POWER key blinks five times.
4. TV does not respond to the remote control or
to front panel control and TV will not power
on or off.
5. When a device is selected from the Input
Selection menu, the screen is blue (no signal
source).
6. You have forgotten your Lock menu pass code.
7. Rating restrictions are not working.
8. On-screen displays appear each time you
change a function.
9. A warning message appeared on screen
stating, "TV will shut down in a few seconds.
Please check if the air flow is blocked."
TV Channels
Symptom
1. The TV takes several seconds to respond to
channel changes.
2. You cannot access a channel.
Appendices
Remarks
The room is too warm. When the TV is off, internal components
continue to draw power and must be cooled by the fan.
• 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.
Replace the batteries.
Use the System Reset button.
• Make sure the selected device is turned on.
• Begin play of the VCR.
See Appendix B, Bypassing the Parental Lock.
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, INPUT 1–3.
Normal TV operation.
• Room temperature has exceeded proper levels. Cool the
room.
• 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.
Remarks
• It is normal for digital channels to take longer to tune in.
• Press ENTER after a entering channel number to avoid delays.
• Use a 4-digit number for an over-the-air digital channel.
• Use a 6-digit number for digital cable channels if your cable
service is able to recognize 6-digit channel numbers.
• Use number keys instead of CH
• Be sure the channel you want to view is in memory. See
Setup > Scan in chapter 5, "TV Menu Settings."
• Check that the TV is switched to the correct device or
antenna for that channel by pressing the INPUT button.
• Make sure Channel Lock is off.
• Make sure the Lock > Parent menu lock is set to off.
• If you cannot tune to a virtual digital channel even though
the TV has already memorized digital channels, tune to the
physical channel number used by the broadcaster. The
virtual channel will then be automatically added to memory.
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