Manual for AV-21VT14/P

Manual for AV-21VT14/P

Brand: JVC

Category: Television

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 6:29 p.m.

Manual Publish Date: 2004-10-01

Remote Control Unit Functions

  • COLOR SYSTEM key
  • FAVORITE CHANNEL keys
  • DISPLAY BACK key
  • MENU (◀/▶/▲/▼) keys
  • CLOSED CAPTION key
  • SOUND TURBO key
  • PICTURE MODE key
  • RETURN + key
  • OFF TIMER key
  • CHANNEL (-/+) keys
  • ECO key
  • POWER key
  • TV/VIDEO key
  • MENU (OK) key
  • MUTING key
  • Number keys
  • 100+ key
  • VOLUME (-/+) keys
  • BASS key (AV-21VT34/P)
  • CINEMA SURROUND key

Front Panel Controls

  • HEADPHONE jack
  • IN (VIDEO-3) : VIDEO
  • IN (VIDEO-3) : AUDIO L/MONO
  • IN (VIDEO-3) : AUDIO R
  • MENU (OK) button
  • CHANNEL (-/+) buttons
  • VOLUME (-/+) buttons
  • Remote control sensor
  • ECO sensor
  • POWER lamp
  • MAIN POWER button

Troubleshooting and error codes

Item Measuring instrument Test point Adjustment part Description
B1 VOLTAGE check Signal generator
DC voltmeter		 B1 (pin 1)
GND (pin 5)
[CN00X connector in MAIN PWB]		 - (1) Receive a black and white signal.
(2) Connect a DC voltmeter between B1 and GND (between pins 1 and 5 of the connector CN00X).
(3) Make sure that the voltage is DC134.5V ± 2V.
FOCUS adjustment Signal generator FOCUS VR
[In HVT]		 - Notes:
• Set PICTURE MODE (VSM) to "BRIGHT".
• The final adjustment of CONVERGENCE must be done after the FOCUS adjustment. (CONVERGENCE is affected by the FOCUS adjustment.)
If any deviation in CONVERGENCE is found, PURITY must be adjusted to restore the convergence.
(1) Receive a crosshatch signal.
(2) Adjust the FOCUS VR so that the vertical and horizontal lines will be clear and in fine detail on the screen.
(3) Make sure that the picture is in focus even when the screen gets darkened.
IF VCO check Remote control unit [1. IF]
1. VCO (CW)		 Receiving frequency Note:
• Under normal conditions, no adjustment is required.
(1) Receive a broadcast signal.
(2) Select 1. IF from the SERVICE MENU.
(3) Select 1. VCO.
(4) Check the characters color of the JUST REFERENCE displayed to yellow.
(5) Press the [DISPLAY] key three times to return to normal screen.
DELAY POINT
(AGC TAKE-OVER) adjustment		 Remote control unit [1. IF]
2. DELAY POINT		 Adjustment item
Initial setting value
NTSC 3.58
VHF
UHF		 (1) Receive a black and white broadcast signal (color off).
(2) Select 1. IF from the SERVICE MENU.
(3) Select 2. DELAY POINT.
(4) Adjust in order to eliminate any noise or beat from the image. Any increase above the initial value produces the noise and any decrease below it produces the beat.
(5) Press the [DISPLAY] key three times to return to the normal screen.
(6) Turn to other channels and make sure that there are no irregularities.
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