JVC AV-21MS30 specifications Troubleshooting

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Troubleshooting

If a problem occurs when you are using the TV, check the below troubleshooting guide before calling for repair.

• No picture,

• Deactivate the BLUE BACK function if it is turned on.

no sound

• Choose the appropriate sound system. Refer to

 

“SOUND SYSTEM” on page 13.

• Snowy picture

• Check the aerial cable and its connection with the TV.

•Stripes appear on the • Interference occurs caused by other devices such as

picture

an amplifier, personal computer, or a hair drier. Move

 

such devices away from your TV.

•Double-pictures • Interference occurs caused by signal reflecting from

(ghosting) occur

mountains or building. Try to adjust the aerial’s

 

direction or use a better directionality antenna.

 

 

• Poor picture

• Choose the appropriate colour system. Refer to

 

“COLOUR SYSTEM” on page 9.

•Adjust the COLOUR or BRIGHT setting. Refer to “PICTURE SETTING” on page 10.

•White and bright still • Inevitable phenomenon due to the nature of the

image look as if it

picture tube. This is not a malfunction.

were coloured

 

•Top of the image from • This is due to the condition of the video signal

software products or

whereby the image was not recorded properly. This

video tape is distorted

is not a malfunction.

 

 

• Poor sound

• Adjust the sound frequency properly. Refer to

 

“EQUALIZER” on page 14.

•Stereo or bilingual • TV channel reception is poor. Change the stereo/

sound is unclear

bilingual mode to mono sound (see page 14).

•Cannot operate the • The batteries may be exhausted. Replace with new

remote control

batteries (see page 7).

•Ensure that you are operating the remote less than seven meters from the front of your TV.

•Cannot operate the • Press TV/VIDEO button to return to TV mode and try

menus

operating the menus.

•Cannot operate the • Deactivate the CHILD LOCK function if it is turned on

front control buttons

(see page 16).

•Colour patches appear • This may due to the magnetized device such as a

at the corner of the

speaker near to your TV. Keep the device apart from

screen

your TV. Alternately, you can also use the magnetic-

 

shielded speaker.

•Image takes a short • Image required time to stabilize before display. This

period to be displayed

is not a malfunction.

•TV may emitted • This is due to a sudden change in temperature and it is

crackling sound

not a malfunction. If the crackling sound is too frequent,

 

request your service technician for inspection.

•Feel a slight electric • This is due to the static electricity of the picture tube

shock when touching

and it will not harm the human body. This is not a

the TV screen

malfunction.

•After you connect the • Please check that the AUTO SIGNAL DETECT

signal to VIDEO-2 and

function is on or off.

playback VCR or DVD

• Press button (VCR or DVD Player) to turn the

Player, the Auto Detect

machine off and turn it on again; do not turn the

does not work.

machine off and on suddenly.

•Inspect the video cable connection on VIDEO-2 that they are connected properly.

•When you are watching • Inspect the video cable connection on VIDEO-2 that

another channel that is

they are connected properly.

not VIDEO-2, AUTO

• In a certain VCR or DVD Player, the function might

SIGNAL DETECT

operate by the discontinuity of the signal.

works while VCR or

 

DVD Player was on.

 

•While you are watching • In a certain VCR or DVD Player, the function might

TV on the other

operate by the discontinuity of the signal.

channels, AUTO SIGNAL

 

DETECT works when

 

you press 1, 7, 3, ¡

 

or 8 on the front panel of

 

VCR or DVD Player.

 

•After TV was on, AUTO • Video signal from VCR or DVD Player cause the

SIGNAL DETECT

function runs properly to indicate that there are video

works.

signal on VIDEO-2 channel.

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Contents Colour Television 15 cm Main features Knowing your TV’s featuresConfirm your TV’s functions Remote control buttons and basic functions PressRemote control buttons and basic functions How to operate menus and menus locationsAV-21MS30 TV buttons and functionsFront of the TV Rear of the TVConnecting the aerial cable Setting up your TVTurn off the equipment including the TV before connecting JVC logo appears on the screenMaking the initial settings Setting up your TVSetup Tour Colour System Basic setting for picturePicture Mode To operate this function with a menuSelect the Picture Setting in Picture menu, then adjust Basic setting for picturePicture Setting White BalanceCompress Advanced setting for pictureAI ECO Sensor ECO Blue BackTeletext Original features for pictureText Language Sound System Basic setting for soundSound Mode BalanceCinema Surround Advanced setting for soundAI Volume StereoDVD function Auto Signal DetectDVD Picture Mode Tint ColourVNR Customized settingOFF Timer LanguageSetup Tour Customized settingVIDEO-2 Setting DisplayTo register the TV channels automatically TV channel presettingAuto Program To add in the new channel Insert in the Edit menu Channel No Country TV channel presetting CH/CC numberChannel Connection Before connectingAdditional preparation Turn off all the devices including the TVTroubleshooting Specifications Victor Company of Japan, Limited FLE-JMT

AV-21MS30 specifications

The JVC AV-21MS30 is a 21-inch CRT television that reflects the era of traditional television technology, catering to audiences who appreciate the classic design and functionality of CRT displays. Launched during a time when flat-screen televisions were starting to dominate the market, the AV-21MS30 remains a testament to JVC's commitment to providing quality viewing experiences for a range of users.

One of the standout features of the AV-21MS30 is its compact size, making it an excellent choice for smaller living spaces or secondary viewing areas such as bedrooms or kitchens. The 21-inch screen provides a decent viewing area while ensuring that the television can easily fit into tight spots. Its moderate weight also allows for straightforward installation and repositioning without the challenges often associated with bulkier models.

The picture quality of the AV-21MS30 is enhanced by JVC's advanced color technology, which offers vibrant and accurate color reproduction. The CRT technology enables deep blacks and impressive contrast ratios, resulting in rich, immersive viewing experiences when watching movies or playing video games. Although not on par with modern LCD or OLED displays, the CRT's natural motion blur is often preferred by some enthusiasts for its smoother rendering of fast-moving images.

Sound quality is another notable characteristic of the JVC AV-21MS30. It features built-in speakers capable of delivering clear audio, which complements the viewing experience. While the sound system may not have the depth and richness that surround sound systems offer, it is more than adequate for everyday use, be it for watching TV shows, films, or playing video games.

The television is equipped with multiple input options, including coaxial and composite connections, allowing users to easily hook up game consoles, DVD players, and even older VCRs. This versatility makes the AV-21MS30 particularly appealing for those with collections of legacy media that they wish to enjoy without the need for additional adapters.

In terms of design, the JVC AV-21MS30 features a classic CRT casing with a minimalist aesthetic that blends well with various interior styles. The remote control offers convenient access to settings, making it straightforward to navigate channels and adjust volume.

While the JVC AV-21MS30 is not the latest technology in the television market, it holds nostalgic value and practical features for a specific audience. Its reliability, simplicity, and quality make it a noteworthy option for anyone looking to experience television as it was enjoyed in an earlier time.
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