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JVC AV-21AT Service Manual
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JVC AV-21AT Service Manual

JVC AV-21AT Service Manual

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SERVICE MANUAL
This service manual mainly consists of the following items:
• The items which differ from those for the AV-21AT service manual.
• The initial value for each setting item.
For details other than those described in this manual, please refer to the following service manual.
Reference Service Manual: AV-21AT Service Manual (No. 56013, May 2000)
Note: The page in parentheses shows the one for the AV-21AT service manual (No. 56013, May 2000).
HOW TO IDENTIFY MODEL
While referring to the illustration given below, identify model name on the rating label affixed to the rear cover.
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.

COLOUR TELEVISION

AV-21AT
Basic model name
MODEL NO.
XXXXX XXXXXXX
XXXXXXX XXXXX
XXXXXX
XXXXX
XXX XXXXX XXXXX
XXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXX
SERIAL No.
Identify model name
AV-21AT/B
No. 56013B
(B)
AV-21AT
XXXX XX XXXX
XXX XX XXXX
XXXXXX–XXX
AV-21AT
AV-21AT
BASIC CHASSIS
CG
No. 56013B
1
Nov. 2000

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Summary of Contents for JVC AV-21AT

  • Page 1: Colour Television

    For details other than those described in this manual, please refer to the following service manual. Reference Service Manual: AV-21AT Service Manual (No. 56013, May 2000) Note: The page in parentheses shows the one for the AV-21AT service manual (No. 56013, May 2000). HOW TO IDENTIFY MODEL While referring to the illustration given below, identify model name on the rating label affixed to the rear cover.
  • Page 2 AV-21AT PARTS DIFFERENCE TABLE The different parts between AV-21AT and AV-21AT are described below: AV-21AT AV-21AT REF. NO. PART NAME DESCRIPTION ! ! ! ! ! PART No. PART No. EXPLODED VIEW PARTS LIST (Page 28) A51LMV20X PICTURE TUBE A51JSY63X15/CM/...

  • Page 3: Specifications

    AV-21AT SPECIFICATIONS (Page 2) Item Content Dimensions (W × H × D) 502mm × 451mm × 480.5mm Mass 19.5kg TV RF System B / G, I, D / K, K1 Colour System TV Mode PAL / SECAM VIDEO Mode PAL / SECAM / NTSC3.58 / NTSC4.43 Receiving Frequency VHF (VL) 46.25MHz ~ 168.25MHz...

  • Page 4: Specific Service Instructions

    AV-21AT SPECIFIC SERVICE INSTRUCTIONS SETTING OF SYSTEM CONSTANT SET (Page 7) Table 1 Setting item Setting contents Setting value COLOUR TRIPLE MULTI. TRIPLE BILINGUAL TUNER ECO SENSOR LANGUAGE E/R/C E/R/C/U E/R/C E/R/U B/B SOUND LOCK COLOUR AUTO MINT MINT MQSS...

  • Page 5: Service Adjustments

    AV-21AT SERVICE ADJUSTMENTS Initial Setting Value IF CIRCUIT ADJUSTMENT -- Adjustment of DELAY POINT (Page 15) Variable Initial setting Setting (Adjustment) Item range value DELAY POINT 0 ~ 127 (AGC TAKE-OVER) V/C (VIDEO/CHROMA) CIRCUIT ADJUSTMENT (Page 15) [SUB MENU 2. V/C]...
  • Page 6 AV-21AT DEFLECTION CIRCUIT ADJUSTMENT (Page 20) [SUB MENU 3. DEF] Initial setting value Setting item Adjustment name Variable range 50Hz 60Hz −4 ~ +3 −1 −3 1. VER. POSITION Vertical center −16 ~ +15 2. HOR. POSITION Horizontal center −64 ~ +63 −35...
  • Page 7 AV-21AT PRESET ADJUSTMENT (Page 23) [SUB MENU 5. PRESET] Colour system Initial setting value Setting item SECAM NTSC 3.58 NTSC 4.43 1. C-TRAP FIX 2. SHARP PEAK 3. ABL 4. GAMMA 5. Y.DELAY TIME VIDEO 6. BLACK EXP START 7. C-BPF VIDEO 8.
  • Page 8 AV-21AT VICTOR COMPANY OF JAPAN, LIMITED TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan AV21ATB-H #3 CTH 0011 No. 56013B...