JVC AV-20N83, AV-21D83, AV-25K83 specifications Troubleshooting

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Troubleshooting

If there is no picture or the TV does not operate normally, make sure the problem isn’t due to the reasons indicated below.

If the problem persists even after taking the measures indicated, please contact a service technician.

Cannot turn the TV on

•Press the Main power button on the TV.

•Connect the power cord to the AC outlet.

The screen turns blue

•Is the BLUE BACK function on? (see page 13.)

Remote control inoperable

•Replace the batteries. (see page 3.)

Buttons on front of the TV do not work

•Switch the CHILD LOCK function off. (see page 13.)

TV does not respond immediately

•Press the main power button on the TV to turn off the main power. Press the main power button again to turn on the TV. If the TV returns to a normal state, operation is normal.

The TV turns off suddenly

•Is the OFF TIMER function set to operate? (see page 9.)

•Is the AUTO SHUTOFF function on? (see page 13.)

Poor sound

•Adjust the sound settings. (see page 17.)

Poor picture

•Press the COLOUR SYSTEM button to select an- other colour system. (see page 8.)

•Adjust the picture settings. (see page 17.)

•Is a component signal output device, such as a DVD player, connected correctly? (see page 5.)

•Is the VIDEO-2 SET function setting correct? (see page 14.)

•If noise (snow) totally blocks out the picture, check the following.

-Have the TV and aerial been connected properly?

-Has the aerial cable been damaged?

-Is the aerial pointing in the right direction?

-Is the aerial itself faulty?

•If the TV or aerial suffer interference from other equipment, stripes or noise may appear in the picture. Move any equipment which can cause interference away from the TV.

•If the TV or aerial suffer interference from signals reflecting from mountains or buildings, double-pictures (ghosting) will occur. Change the aerial’s direction or replace it with an aerial with better directionality.

•When a white and bright still image (such as a white dress) is displayed on the screen, the white part may look as if it is coloured. When the image disappears from the screen, the unnatural colours will also disappear.

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Contents Instructions Safety precautions Confirm which remote control you have Insert the batteries into the remote controlPreparation Connecting the aerial Connecting the aerial and VCRPreparation VCRConnect the power cord to the AC outlet Connecting other devicesPress the Main power button on the TV Initial settingBasic operation Press the Power button to turn your TV onSelect a channel If the picture is not clearPicture Mode button Remote control buttons and functionsECO Sensor button Colour System buttonButton OFF Timer buttonPicture Booster button Muting buttonChannel Scan button Return + buttonCinema Surround button HIGH/LOWPress the Menu / buttons to change function settings Using the TV’s menusBasic operation Press the Menu TbuttonsInput Using the TV’s menusVNR CompressChild Lock Auto ShutoffBlue Back Press Menu Tto display Menu 2 menu, then select Child LockIf a component video signal Y/CB/CR signals is input Auto CH PresetPress Menu / to start the Auto CH Preset function To stop the Auto CH PresetManual CH Preset Manual CH PresetPress Menu Tto display the Menu 3 menu, then select Press MenuLanguage SkipPress Menu Tto select Skip Press Menu / to select languagePicture Adjustments Sound AdjustmentsAI Volume TV buttons and parts TV buttons and parts Basic operation Using the buttons on the TVOperating menus For details, see the description for each functionTroubleshooting Broadcasting systems Specifications

AV-25K83, AV-21D83, AV-20N83 specifications

The JVC AV-20N83, AV-21D83, and AV-25K83 are part of JVC's renowned line of CRT televisions that offered a blend of advanced technology and consumer-friendly features. These models, although classic by today's standards, played a significant role in the evolution of home entertainment systems during their production era.

The JVC AV-20N83 is a 20-inch model that was designed with a compact footprint, making it ideal for smaller living spaces such as apartments and dorm rooms. It features a 4:3 aspect ratio, which was the standard for television programming at the time. This model incorporates JVC’s proprietary color technology, which enhanced picture clarity and vibrant color reproduction. Its built-in stereo sound system delivered clear audio, providing an immersive viewing experience that complemented the high-quality visuals.

The AV-21D83, a slightly larger 21-inch variant, built upon the strengths of the AV-20N83. This model was equipped with a range of connectivity options, including composite and RF inputs, making it suitable for various external devices such as VCRs and gaming consoles. The AV-21D83 also featured an enhanced audio system, allowing for a richer sound experience. One of its standout characteristics was the ease of operation. The user-friendly remote control made switching channels and adjusting settings simple, enhancing the overall user experience.

The AV-25K83, the largest of the three at 25 inches, was a compelling option for families looking to enjoy movie nights or gaming sessions. This model boasted advanced picture processing technology, ensuring high-quality images with minimal distortion. The 25-inch screen size offered a more immersive viewing experience, making it a popular choice for larger rooms. The AV-25K83 included features such as sleep timer and parental control settings, which catered to family needs and preferences.

All three models were equipped with JVC’s reliable build quality, ensuring durability and longevity. While these CRT televisions have been surpassed by modern flat-screen technology, the JVC AV-20N83, AV-21D83, and AV-25K83 remain significant for their contributions to the development of consumer television. Their combination of advanced picture clarity, sound quality, and user-centric features laid the groundwork for the rich home entertainment experiences we enjoy today.
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