Mitsubishi Electric DLP 742 Series Basic Owner's Manual page 33

Appendix C: Troubleshooting, continued
Common Picture Problems
Symptom
1.
Picture does not look like a high-defi-
nition picture.
2.
TV has sound but no picture.
3. A color program appears as a black
and white image, or the colors are
dim, or the screen is black.
4. Picture from an HDMI input is noisy
(poor quality).
Front-Panel STATUS Light
LED Color
Green
Green
Green
Yellow
Key
Off
Yellow
Steady On
Slow Blinking
Fast Blinking
Red
Red/
Yellow
Remarks
Compare the picture to the TV's test picture (Picture > Picture+
menu) to check if the source signal is supplying a lesser-quality
image.
Not all signals are high-definition signals. To receive high-definition
programming from your cable or satellite provider, you must sub-
scribe to the provider's high-definition service. Some over-the-air
broadcasts are in high-definition and can be received with a high-
quality antenna suited to your location.
• Press MENU on the remote control. If the menu displays, then
there is a problem with the incoming signal.
• Check that all video inputs are plugged in firmly to the correct
input jacks.
• Press and hold the POWER button on the control panel for ten
seconds to perform System Reset.
• If using component video, check that the red, green, and blue
input cables are correctly connected to the red, green, and blue
component video jacks.
• If using composite video, check that the incoming cable is con-
nected the TV's green Y/VIDEO jack.
• 842 Series. The PerfectColor color balance has been incorrectly
set. Reset the PerfectColor balance.
• Compare the picture to the TV's test picture (Picture > Picture+
menu) to check the source of the noise.
• Upgrade a standard (unmarked) HDMI cable to a high-speed
HDMI cable.
TV Condition
TV is powered on. Normal operation.
TV powered off, auto-on TV Timer is set.
Normal operation. TV can be turned on at any time.
TV just powered off and lamp is cooling. Sixty seconds after turning off TV,
LED will start to blink. TV can be turned back on before blinking starts or after
blinking stops, but not while the indicator is blinking. Normal operation.
TV is too hot. The TV will display a warning message and shut off if it overheats.
• Ambient room temperature may be too high. Turn off the TV and let the room
temperature drop.
• Clear blocked air vents. Ensure at least a four-inch clearance on all sides of the TV.
Lamp access door is not secure or no lamp installed.
TV will not operate until lamp access door is secured. See Appendix B.
Lamp failure. Replace the lamp. See Appendix B.
TV may require service.
• Hold power button on front panel for 10 seconds to reset TV.
• If LED continues to flash red and yellow after reset, unplug the TV from the
AC power source. Wait one minute and then plug the set back in.
• If LED continues to flash red and yellow, go to www.mitsubishi-tv.com or
call 1-800-332-2119 to receive Authorized Service Center information.
You may be asked to count how many times the LED flashes each color to
aid in troubleshooting.
Appendices
For assistance call 1(800) 332-2119
33