Glossary; Maintenance - Magnavox CT270MW8 A Manual Del Usario

I
NFORMATION

Glossary

ATSC
Acronym that stands for Advanced Televi-
sion Systems Committee and the name of
the digital broadcasting standards.
Aspect ratio
The width of a TV screen relative to its
height. Conventional TVs are 4:3 (in
other words, the screen is almost square);
widescreen models are 16:9 (the screen is
almost twice as wide as its height).
Dolby Digital
The system developed by Dolby Labora-
tories to compress digital sound. It offers
stereo sound (2ch) or multi-channel audio.

Maintenance

Cabinet Cleaning
• Wipe the front panel and other exterior surfaces of the unit with a soft
cloth immersed in lukewarm water and wrung dry.
• Never use a solvent or alcohol. Do not spray insecticide liquid near the unit.
Such chemicals may cause damage and discoloration to the exposed surfaces.
Panel Cleaning
Wipe the panel with a soft cloth. Before cleaning the panel, disconnect the
power cord.
Degaussing
A degaussing circuit in this unit clears up color errors on the TV screen. Color errors
occur when there is any excess magnetism close to the unit. This circuit is designed
to operate once when the unit is fi rst plugged in. If you see minor color errors on
the screen, unplug the unit for approximately 30 minutes. When you plug the unit
again, the degaussing circuit will operate to clear errors. Take this step any time the
TV screen is accidentally magnetized or when you move the unit.
Servicing
Should your unit become inoperative, do not try to correct the problem
yourself. There are no user serviceable parts inside. Turn off the unit,
unplug the power cord and call our toll free customer support line found on
the cover of this manual to locate an authorized service center.
Auto Head Cleaning
• Automatically cleans video heads as you insert or remove a cassette, so you
can see a clearer picture.
• Playback picture may become blurred or interrupted while the TV program
reception is clear. Dirt accumulated on the video heads after long periods of use
or the usage of rental or worn tapes can cause this problem.
If a streaky or snowy picture appears during playback, the video heads in your
unit may need to be cleaned.
1. Please visit your local Audio/Video store and purchase a good quality
VHS video head cleaner.
2. If a Video Head Cleaner does not solve the problem, please call our help line
mentioned on the front page, to locate an Authorized Service Center.
Note:
• Remember to read the instructions included with the video
head cleaner before use.
• Clean video heads only when problems occur.
HDTV (High Definition TV)
Ultimate digital format that produces high
resolution and high picture quality.
NTSC
Acronym that stands for National Television
Systems Committee and the name of the
current analog broadcasting standards.
Password
A stored 4-digit number that allows access
to parental control features.
If the Laser Optical Pickup Unit is Dirty
• If the unit still does not perform properly when it is operated, while
referring to the relevant sections and to "Troubleshooting Guide" in this
owner's manual, the laser optical pickup unit may be dirty. Consult your
dealer or an Authorized Service Center for inspection and cleaning of the
laser optical pickup unit.
Disc Handling
• Handle the discs so that fi ngerprints and dust do not adhere to the
surfaces of the discs.
• Always store the disc in its protective case when it is not used.
• To clean-off , use a soft cloth.
• Do not use a hard cloth since this will mar the disc.
• Wipe the disc in a straight line from center to edge.
• Never wipe with a circular motion.
• Do not use detergent or abrasive cleaning agents.
IR Signal Check
If the remote control is not working properly, you can use an AM radio or
digital camera (including a cellular phone with built-in camera) to see if it
is sending out an infrared signal.
• With an AM radio:
Tune the AM radio station to a non-broadcasting
frequency. Point the remote control towards it,
push any button and listen. If the sound from the
radio fl utters, it is receiving the remote control's
infrared signal.
Region Code
Regions associate discs and players with
particular areas of the world. This unit will
only play back discs that have compatible
region codes. You can find the region code
of your unit by looking on the rear panel.
Some discs are compatible with more than
one region (or all regions).
SDTV (Standard Definition TV)
Standard digital format that is similar to the
NTSC picture quality.
• With a digital camera
(including built-in cell phone
cameras) Point a digital camera
towards the remote control. Push
any button on the remote control and look through the
digital camera. If the infrared light appears through the
camera, the remote control is working.
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