JVC AV-21R318 User Manual

17
REFERENCE
Troubleshooting
If a problem occurs when you are using the TV, check the below
troubleshooting guide before calling for repair.
Problem Cause / Solution Page
No picture, no sound • Deactivate the BLUE BACK function if it is
turned on.
• Choose the appropriate sound system. Refer
to “SOUND SYSTEM”.
10
12
Snowy picture • Check the aerial cable and TV connections. 4
Stripes appear on the
picture
• Interference caused by devices such as an
amplifier, personal computer, or a hair drier.
Move it away from your TV.
–
Double-pictures
(ghosting) occur
• Interference occurs caused by signal reflecting
from mountains or building. Try to adjust the
aerial’s direction or use another antenna.
–
Poor picture • Choose the appropriate colour system. Refer
to “COLOUR SYSTEM”.
• Adjust the COLOUR or BRIGHT setting. Refer
to “PICTURE SETTING”.
9
10
White and bright still
image look as if it was
coloured
• Inevitable phenomenon due to the nature of
the picture tube. This is not a malfunction.
–
Top of the image from
software products or
video tape is distorted
• Due to the condition of the video signal, the
image was not properly recorded. This is not a
malfunction.
–
Poor sound • Adjust the sound frequency properly. Refer to
“SOUND SYSTEM”.
12
Cannot operate the
remote control
• The batteries may be exhausted. Replace with
new batteries.
• Ensure that you are operating the remote
control at less than seven meters from the
front of your TV.
6
Cannot operate the
menus
• Press TV/VIDEO button to return to TV mode
and try operating the menus.
–
Cannot operate the
front control buttons
• Deactivate the CHILD LOCK function if it is
turned on.
14
Problem Cause / Solution Page
Colour patches appear
at the corner of the
screen
• This maybe due to magnetized device such
as a speaker placed near to your TV. Move it
away from your TV. Alternatively, you can also
use the magnetic shielded speaker.
–
Picture is tilted • This maybe due to the earth magnetism. Refer
to “PICTURE TILT” to correct the tilt.
10
Image takes a short
period to be displayed
• Image required time to stabilize before display.
This is not a malfunction.
–
TV may emit crackling
sound
• This is due to a sudden change in temperature
and it is not a malfunction. If the crackling
sound is too frequent, request your service
technician for inspection.
–
Feel a slight electric
shock when touching
the TV screen
• This is due to the static electricity of the
picture tube and it will not harm the human
body. This is not a malfunction.
–
AUTO SIGNAL DETECT
does not work
• Set the AUTO SIGNAL DETECT function to
ON.
• Turn the VCR or DVD Player off and on again.
• Check that the video cable connection on
VIDEO-2 is properly connected.
13
–
–
Suddenly, the TV input
changes to VIDEO-2
• Check whether the AUTO SIGNAL DETECT
function is on or off.
• AUTO SIGNAL DETECT function may work
when you operate the VCR or DVD player
even if you do not make it to playback.
13
–
AUTO SIGNAL DETECT
does not work correctly
• Check the video cable connection.
• Some VCR or DVD player may output the
video signal discontinuously. If this happens,
AUTO SIGNAL DETECT function cannot work
correctly.
–
–
“PLEASE DISCONNECT
VIDEO-1 CABLE!”
appears on the screen.
• Please disconnect either S-VIDEO cable or
video input cable from video-1 input.
–
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JVC AV-21R318 Specifications

General

Screen Size	21 inches
Display Technology	CRT
Aspect Ratio	4:3
Remote Control	Yes
Tuner	Analog
Input/Output Ports	Composite, RF
Power Source	AC 220-240V
Dimensions	490 x 450 x 450 mm

Summary

Safety Precautions

Warning: Fire or Shock Hazard

Warning against exposing the appliance to rain or moisture to prevent fire or shock hazards.

Caution: Personal Safety Rules

Observe rules for personal safety regarding TV use, like ventilation and handling.

Understanding Your TV's Features

Connecting Your TV

Aerial Cable and VCR Connections

Guide on connecting aerial cables and VCRs to the TV for signal input.

Rear Component/Video Terminal Connections

Instructions for connecting to the TV's rear component/video input and output terminals.

Front Video Input Terminal Connection

How to connect devices like camcorders or game consoles to the front AV input.

Initial TV Setup

Turning On and Language Selection

Steps to turn on the TV and select the preferred language during initial setup.

Automatic Channel Scanning (AUTO PROGRAM)

Process for automatically searching and storing TV channels.

Editing the Channel List

Guide on how to edit, add, or delete channels from the TV's list.

Remote Control and Basic Functions

Favourite Channel Programming

How to program and recall up to four favorite TV channels using color buttons.

Menu Navigation and Operation

Instructions on accessing and operating the TV's menu system.

Program Number Selection

Method for selecting TV channels using their numerical program numbers.

TV Controls and Menu Navigation

TV Front Panel Buttons

Overview of the buttons located on the TV's front panel and their functions.

Menu Operation Guide

Detailed steps on how to navigate and operate the TV's on-screen menu system.

Menu Operations Continued

Picture Settings

Colour System Selection

Adjusting the colour system for clear picture display based on region.

White Balance Adjustment

Changing white balance to better match the type of video being viewed.

Aspect Ratio Compression (16:9)

Converting a 4:3 aspect ratio picture to a 16:9 wide picture.

Picture Mode Selection

Choosing preset picture modes like USER, SHARP, VIVID, or SOFT.

Picture Booster

Enhancing picture clarity for low signal reception.

Advanced Picture Adjustments

Detailed Picture Settings

Fine-tuning CONTRAST, BRIGHT, SHARP, COLOUR, and TINT settings.

Blue Back Function

Automatically displaying a blue screen and muting sound for weak signals.

AI Eco Sensor / Eco Mode

Automatically adjusting picture brightness based on room lighting.

Picture Tilt Correction

Correcting picture tilt caused by the Earth's magnetic force.

Picture-in-Picture (PIP) Operation

PIP Display and Channel Control

How to display a sub picture and switch channels within PIP mode.

PIP Function Controls

Using buttons like SUB-P, Input, Swap, Position, and Freeze in PIP mode.

Sound Settings

MaxxBass for Enhanced Sound

Boosting bass frequencies for a richer audio experience.

Cinema Surround Sound

Enabling wider audience sound effects for movie playback.

Equalizer Settings

Adjusting sound levels for specific frequencies when in USER sound mode.

Sound Settings Continued

Speaker Balance Adjustment

Adjusting the volume balance between left and right speakers.

Sound Mode Selection

Choosing sound modes like MUSIC, CINEMA, NEWS, or DRAMA.

Sound System Configuration

Selecting the appropriate sound system based on country or region.

AI Volume Control

Automatically adjusting volume levels across channels based on signal strength.

Customized Settings

Auto Signal Detect

Automatic input mode switching between RF and VIDEO-2.

DVD Theater Status

Enhancing picture quality for movie playback in dark environments.

VNR (Video Noise Reduction)

Reducing picture noise for a clearer image.

On-Screen Display Language

Selecting the preferred language for the TV's on-screen menus and text.

Customized Settings Continued

On Timer Function

Setting the TV to turn on automatically at a specific channel and time.

Off Timer Function

Setting the TV to turn off automatically after a specified period.

Beep Alert Function

Enabling beep alerts for various TV operations and button presses.

Child Lock Feature

Disabling the TV's front control buttons to prevent unintended operation.

Video-2 Setting

Configuring the VIDEO-2 terminal based on the input signal type.

TV Channel Presetting

Automatic Channel Registration (AUTO PROGRAM)

Registering TV channels automatically.

Manual Channel Registration (EDIT Menu)

Manually registering TV channels into the channel list.

Editing Channel List (MOVE, DELETE, INSERT)

Modifying the channel list by moving, deleting, or inserting channels.

Channel Presetting Reference

CH/CC Number Mapping

Table mapping channel numbers to CH/CC numbers for specific regions.

Troubleshooting Common Issues

No Picture or Sound Problems

Solutions for issues with no picture or sound, including blue back and sound system.

Picture Quality Issues

Addressing snowy pictures, stripes, double images, poor colour, and tilt.

Remote and Control Operation Issues

Troubleshooting problems with the remote control or TV buttons.

Auto Signal Detect Malfunctions

Resolving issues where Auto Signal Detect does not work correctly or unexpectedly.

Technical Specifications

Technical Specifications Continued