Information, Nformation, 5 glossary 5 maintenance – JVC A91F5UH User Manual
Page 36: Cabinet cleaning, Panel cleaning, Servicing, Ir signal check

36
EN
I
NFORMATION
ATSC
Acronym that stands for Advanced 
Television 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 TV screen is almost square); 
widescreen models are 16:9 (the TV screen 
is almost twice as wide as its height).
CEC (Consumer Electronics Control)
This allows you to operate the linked 
functions between our brand devices 
with CEC feature and this unit. We do not 
guarantee 100% interoperability with other 
brands of CEC compliant devices.
Component Video
This is a video signal format that conveys 
each of 3 principal colors of light (red, 
blue and green) through different signal 
lines. This allows the viewers to experience 
picture colors as original as it is. There are 
several signal formats, including Y / Pb / Pr 
and Y / Cb / Cr.
Dolby Digital
The system developed by Dolby 
Laboratories to compress digital sound. It 
offers stereo sound (2ch) or multi-channel 
audio.
HDMI
(High-Definition Multimedia Interface)
Interface that supports all uncompressed, 
digital audio/video formats including 
set-top box, BD/DVD recorder or digital 
television, over a single cable.
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.
Off the air NTSC signals will no longer be 
sent by broadcasting stations after Feb 17, 
2009.
Password / PIN Code
A stored 4-digit number that allows access 
to parental control features.
SAP (Secondary Audio Program)
Second-audio channel delivered separately 
from main-audio channel. This audio 
channel is used as an alternate in bilingual 
broadcasting.
SDTV (Standard Definition TV)
Standard digital format that is similar to the 
NTSC picture quality.
S-video
Offers higher quality images by delivering 
each signal, color (c) and luminance (y) 
independently of each other through a 
separate cable.
5 Glossary
5 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 of the unit with a soft cloth. Before 
cleaning the panel, disconnect the AC power cord.
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 AC power cord and call 
our toll free customer support line found on the cover of 
this manual to locate an authorized service center.
IR Signal Check
If the remote control is not working properly, you can use 
a digital camera (including a cellular phone with built-in 
camera) to see if it is sending out an infrared signal.
• With a digital camera
(including built-in cell phone cameras):
Point the Digital Camera towards the 
remote control infrared diode at the front 
of the remote control. Press any button on 
the remote control and look through the 
camera display. If the infrared pulsating 
light appears through the camera, the 
remote control is sending out an IR signal. 
