Appendix B: Troubleshooting - Mitsubishi Electric 3D DLP 742 Series Owner's Manual

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Appendices

Appendix B: Troubleshooting

General TV Operation
Symptom
1. The TV remote control does not work.
2. When I try to use the remote control, the
POWER key blinks five times.
3.
TV does not respond to the remote control
or to control-panel buttons and TV will not
power on or off.
When a device is selected from the Input
4.
Selection menu, the screen is blue or black (no
signal source).
5. You have forgotten your Lock menu pass
code.
6.
Rating restrictions are not working.
7.
On-screen displays appear each time you
change a function.
8. A warning message appeared on screen
stating, "TV will shut down in a few seconds.
Please check if the air flow is blocked."
Service
If you are unable to correct a problem with your
TV, consult Mitsubishi Consumer Relations at
1 (800) 332-2119.
• DO NOT adjust any controls other than those
described in this Owner's Guide and the on-line
supplemental Owner's Guide.
• DO NOT remove the protective back cover of your TV.
For assistance call 1(800) 332-2119
Remarks
• Check that the batteries are fresh and installed correctly.
• Be no more than 20 feet from the TV when using the remote
control.
• If using an external 3D emitter, try pointing the emitter in a
different direction or disconnect the emitter.
• There may be interference from the TV's internal IR emitters
for 3D glasses. Turn off the emitters in the Picture > 3D
Mode menu.
Replace the batteries.
• Unplug the AC power cord for 10 seconds.
• Press and hold the POWER button on the control panel for
ten seconds to perform system reset.
• Make sure the selected device is turned on.
• Check connections to the device.
• Begin play of the device.
See "Bypassing TV Locks," page 35.
Open the Lock > Parental menu and:
• Verify that the ratings locks are active.
• Check the Lock Time/Unlock Time to check if rating restric-
tions are disabled.
• Rating restrictions apply only to content on the ANT input
and composite Y/VIDEO inputs.
Normal TV operation.
• Internal TV 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.
Service and Customer Support
Customer Support
• To order replacement or additional remote controls,
• For questions:
visit our website at www.mitsuparts.com or call
1 (800) 553-7278.
- Call Consumer Relations at 1 (800) 332-2119.
- E-mail: TVsupport@mevsa.com
- Website: www.mitsubishi-tv.com