Appendix B: Troubleshooting - Mitsubishi Electric 3D DLP 642 Series Owner's Manual

30
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.
4. When a device is selected from the Input
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."
9. I have turned on CEC for my HDMI devices
but control is erratic and I wish to disable it.
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.
• 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.
Replace the batteries.
• Unplug the AC power cord for 10 seconds.
• Press and hold the POWER button on the control panel for 10
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" on page 22 .
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.
• First turn off the TV's HDMI control for the specific device.
Open the Inputs > HDMI Control menu, select the device,
select Off.
• Disable CEC on the device itself. See the device's instruc-
tions.
• If the problem persists, do the following:
1. Disconnect the device from the TV.
2. Open the Inputs > Name menu and select Delete for
the device.
3. Reconnect the device to the TV and Auto Input Sensing
will recognize the device with CEC disabled.
Service and Custo mer Support
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: TVsupport@mevsa.com
- Website: www.mitsubishi-tv.com