MITSUBISHI ELECTRIC 3D DLP HOME-CINEMA TELEVISION SERIES 742 - Manual (Page 44)

44 Appendices
For assistance call 1(800) 332-2119
Appendix B: Troubleshooting
General TV Operation
Symptom Remarks
1. The TV remote control does not work. • 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.
2. When I try to use the remote control, the
POWER key blinks five times.
Replace the batteries.
3. TV does not respond to the remote control
or to control-panel buttons and TV will not
power on or off.
• 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.
4. When a device is selected from the Input
Selection menu, the screen is blue or black (no
signal source).
• Make sure the selected device is turned on.
• Check connections to the device.
• Begin play of the device.
5. You have forgotten your Lock menu pass
code.
See “Bypassing TV Locks,” page 35.
6. Rating restrictions are not working. 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.
7. On-screen displays appear each time you
change a function.
Normal TV operation.
8. A warning message appeared on screen
stating, “TV will shut down in a few seconds.
Please check if the air flow is blocked.”
• 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
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.
Customer Support
• To order replacement or additional remote controls,
visit our website at www.mitsuparts.com or call
1 (800) 553-7278.
• For questions:
- Call Consumer Relations at 1 (800) 332-2119.
- E-mail: [email protected]
- Website: www.mitsubishi-tv.com