JVC AV-21D116 Service Manual
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JVC AV-21D116 Service Manual

JVC AV-21D116 Service Manual

Colour television
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SERVICE MANUAL
7
2006
YA396
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
COLOUR TELEVISION
AV-21D116

TABLE OF CONTENTS

COPYRIGHT © 2006 Victor Company of Japan, Limited
/B
BASIC CHASSIS
CG4
No.YA396
2006/7

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  • Page 1: Table Of Contents

    COLOUR TELEVISION YA396 2006 AV-21D116 BASIC CHASSIS TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Items Contents Dimensions (W × H × D) 59.8 cm × 46.8 cm × 47.8 cm Mass 21 kg TV RF System B/G, I, D/K Colour System SECAM NTSC 3.58 / NTSC 4.43 Receiving VHF Low 46.25 MHz to 168.25 MHz Frequency VHF High 175.25 MHz to 463.25 MHz...

  • Page 3: Precaution

    SECTION 1 PRECAUTION SAFETY PRECAUTIONS (1) The design of this product contains special hardware, (8) When service is required, observe the original lead dress. many circuits and components specially for safety Extra precaution should be given to assure correct lead purposes.

  • Page 4: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS FEATURES PICTURE MODE CHILD LOCK This function can adjust the picture settings automatically. Use this function to prevent children from operating the TV There are BRIGHT, STANDARD and SOFT in the PICTURE without parental consent. MODE.

  • Page 5: Disassembly

    SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE 3.1.1 REMOVING THE REAR COVER • Unplug the power cord. (1) Remove the 7 screws [A] and 1 screw [B] as shown in Fig.1. (2) Withdraw the REAR COVER toward you. CAUTION: When reinstalling the rear cover, carefully push it inward after inserting the MAIN PWB into the REAR COVER groove.
  • Page 6 FRONT CABINET SPEAKER CRT SOCKET PWB (Within MAIN PWB) MAIN PWB SPEAKER POWER CORD REAR COVER Fig.1 1-6 (No.YA396)
  • Page 7 MEMORY IC REPLACEMENT • This model uses the memory IC. • This memory IC stores data for proper operation of the video and drive circuits. • When replacing, be sure to use an IC containing this (initial value) data. 3.2.1 MEMORY IC REPLACEMENT PROCEDURE 1.
  • Page 8 3.2.2 SETTINGS OF FACTORY SHIPMENT 3.2.2.1 BUTTON OPERATION 3.2.3 SYSTEM CONSTANT SETTING Setting item Setting position Setting item Setting value POWER COLOUR TRIPLE CHANNEL BILINGUAL VOLUME TUNER ECO SENSOR 3.2.2.2 REMOTE CONTROL DIRECT OPERATION LANGUAGE E / T Setting item Setting position B/B SOUND CHANNEL...
  • Page 9 3.2.4 SERVICE MENU SETTING ITEMS Setting item Setting value Setting item Setting value 2. V/C 1.CUT OFF 5. PRESET Colour System 1. C-TRAP FIX 2.DRIVE [Do not adjust] 2. SHARP PEAK 3.BRIGHT 3. ABL 4.CONT. 4. GAMMA 5.COLOUR 5. Y. DELAY TIME 6.TINT 6.
  • Page 10 REPLACEMENT OF CHIP COMPONENT 3.3.1 CAUTIONS (1) Avoid heating for more than 3 seconds. (2) Do not rub the electrodes and the resist parts of the pattern. (3) When removing a chip part, melt the solder adequately. (4) Do not reuse a chip part after removing it. 3.3.2 SOLDERING IRON (1) Use a high insulation soldering iron with a thin pointed end of it.

  • Page 11: Adjustment

    SECTION 4 ADJUSTMENT ADJUSTMENT PREPARATION MEASURING INSTRUMENT AND FIXTURES (1) There are 2 ways of adjusting this TV : One is with the (1) DC voltmeter (or digital voltmeter) REMOTE CONTROL UNIT and the other is the (2) Oscilloscope conventional method using adjustment parts and (3) Signal generator components.

  • Page 12: Main Pwb

    ADJUSTMENT LOCATIONS CRT SOCKET PWB (SOLDER SIDE) TP-47G/R TP-47B TP-E CRT EARTH WIRE (BRAIDED ASS'Y) FRONT F901 IC702 IC701 MEMORY IC IC301 TU001 MAIN PWB 1Pin TP-91(B1) UPPER:FOCUS 2Pin NC LOWER:SCREEN 3Pin X-ray1 4Pin X-ray2 5Pin TP-E( ) 1-12 (No.YA396)
  • Page 13 BASIC OPERATION OF SERVICE MENU 4.6.1 TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the REMOTE CONTROL UNIT. 4.6.2 SERVICE MENU ITEMS With the SERVICE MENU, various adjustments can be made, and they are broadly classified in the following items of settings. 1.IF Adjustment of the IF circuits.
  • Page 14 (1) By pressing the [6] key, you can change the ON or OFF [should be OFF]. Should be OFF: If it is ON, when you turn off the power and turn on a power again, the JVC’s logo will be shown about 15 seconds automatically, and the SETUP TOUR starts.
  • Page 15 4.6.8 SERVICE MENU FLOW CHART SERVICE MENU 1. IF VCO (CW) ***.** TOO HIGH SERVICE MENU ABOVE REFERENCE 1.IF 2.V/C JUST REFERENCE 3.DEF 4.VSM PRESET BELOW REFERENCE 1. VCO 5.PRESET TOO LOW 6.SETUP TOUR OFF AFT ADJUST 2. DELAY POINT VCO ADJUST 1-6 : SELECT DISP : EXIT...
  • Page 16 INITIAL SETTING VALUE OF SERVICE MENU • Adjustment of the SERVICE MENU is made on the basis of the initial setting values ; however, the new setting values which set the screen in its optimum condition may differ from the initial setting. •...
  • Page 17 [5. PRESET] The items in the following table, it is no requirement for adjustment.If values had changed by the miss operation, set the initial setting values in the following table. COLOUR SYSTEM (Do not adjust) Initial setting value (Fixed value) Setting item Variable range SECAM...
  • Page 18 ADJUSTMENT PROCEDURE 4.8.1 CHECK ITEM Measuring Item Test point Adjustment part Description instrument B1 VOLTAGE Signal TP-B1 : 1-pin (1) Receive a whole black signal. generator TP-E : 5-pin (2) Connect a DC voltmeter to 1-pin and 5-pin of S1 (S1 connector) connector.
  • Page 19 Measuring Item Test point Adjustment part Description instrument DELAY POINT Signal [1. IF] (1) Receive a black and white signal (colour off). (AGC) generator 2. DELAY POINT (2) Select 1. IF. (AGC TAKE-OVER) (3) Select < 2. DELAY POINT >. Remote (4) Set the setting values of the setting items as shown control unit...
  • Page 20 4.8.4 DEFLECTION CIRCUIT • There are 2 modes of adjustment (setting value) 50Hz mode and 60Hz mode, depending upon the kind of signals (vertical frequency 50Hz / 60Hz). • When adjusted in 50Hz mode and 60Hz mode will be automatically set. The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values.The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
  • Page 21 4.8.5 VIDEO CIRCUIT The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting values which adjust the screen to the optimum condition can be different from the initial setting values. Do not change the initial setting values of the setting items not listed in "ADJUSTMENT PROCEDURE".
  • Page 22 (3) Adjust NTSC 3.58 COLOUR to bring the value of (A) in the voltage table. NTSC 4.43 COLOUR Voltage setting (A) (1) When NTSC 3.58 is set, NTSC 4.43 will be MODEL SECAM NTSC3.58 NTSC4.43 automatically set at the respective values. AV-21D116/B +12V +6V (VDO) 1-22 (No.YA396)
  • Page 23 (6) Adjust NTSC 3.58 TINT to bring the value of (B) in the voltage table in the left. NTSC 4.43 TINT (1) When NTSC 3.58 is set, NTSC 4.43 will be automatically set at the respective values. Voltage setting (B) MODEL NTSC3.58 NTSC4.43 +4V (VDO) AV-21D116/B (No.YA396)1-23...

  • Page 24: Troubleshooting

    Measuring Item Test point Adjustment part Description instrument SECAM BLACK Signal [2. V/C] (1) Input a SECAM full field colour bar signal. OFFSET generator 7. SECAM BL ADJUST (2) Select 2. V/C from the SERVICE MENU. (3) Select < 7. SECAM BL ADJUST >. Remote (4) Set the initial setting value of <...
  • Page 25 Victor Company of Japan, Limited Display Category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YA396) Printed in Japan...
  • Page 26 1 Confirm which remote control you have ..3 INSTRUCTIONS 2 Inserting the batteries ........3 3 Connecting the aerial and external devices ... 4 Thank you for buying this JVC 4 Connecting the power cord ......6 colour television. 5 SETUP TOUR ..........6...

  • Page 27: Safety Precautions

    Safety precautions WARNING • To prevent fire or shock hazard, do not expose the TV to rain or moisture. CAUTION • Operate only from the power source indicated on the rear of the TV. • Avoid damaging the power cord and mains plug. When you unplug the TV, pull it out by the mains plug.

  • Page 28: Preparation

    Preparation 1 Confirm which remote control you have RM-C1121 2 Inserting the batteries Correctly insert two batteries, observing the , and . polarities and inserting the . end first. CAUTION: Follow the cautions printed on the batteries. Notes: • Use AA/R6/UM-3 dry cell batteries. •...

  • Page 29: Connecting The Aerial And External Devices

    Preparation 3 Connecting the aerial and external devices • For further details, refer to the manuals provided with the devices you are connecting. • Connecting cables are not supplied. • The front and rear AUDIO/VIDEO input jacks are directly connected so that input to either jack is output through both.
  • Page 30 Preparation ■ Connecting other external devices To audio To video output output VCR (for playing) VIDEO AUDIO VCR (for recording) To audio To video input input • Illustration of AV-14F116. Camcorder TV game To video To audio output output VIDEO AUDIO MENU CHANNEL...

  • Page 31: Connecting The Power Cord

    Operate only from the power source indicated on the rear of the TV. 5 SETUP TOUR When the TV is first turned on it enters the SETUP TOUR mode, and the JVC logo is displayed. Follow the instructions on the on-screen display to perform the SETUP TOUR.

  • Page 32: Basic Operation

    Basic operation 1 Press the POWER button to turn your TV on. • If your TV does not turn on, press the Main power button on the TV then press the POWER button again. • You can also turn on your TV by pressing any of the following buttons;...

  • Page 33: Remote Control Buttons And Functions

    Remote control buttons and functions In VIDEO mode: PICTURE MODE button AUTO SECAM You can select one of three picture adjustment settings as you like. NTSC3.58 NTSC4.43 Press this button to select a mode. AUTO: Automatic colour system selection. BRIGHT: Heightens contrast and sharpness.

  • Page 34: Display Button

    Remote control buttons and functions DISPLAY button CHANNEL SCAN button You can continuously display the current You can quickly view all TV channels channel number or VIDEO mode on the programmes that you can view on your screen. TV, and search for the programme you want to view.

  • Page 35: Using The Tv's Menus

    Using the TV’s menus This TV has a number of functions you can operate using the menus. To use all your TV’s functions fully, you need to understand how to use the menus. 2 Repeatedly press the MENU T buttons to display a desired menu.

  • Page 36: On Timer

    Using the TV’s menus When the time set for the ON TIMER ON TIMER function is reached: Your TV will automatically turn on and The TV automatically turns on and the tune into the channel you set after the channel set for the ON TIMER function is period of time you set.

  • Page 37: Vnr

    Using the TV’s menus CHILD LOCK (Video Noise Reduction) You can reduce the picture noise. You can disable the front control buttons of the TV. 1 Press MENU T to display the When this function is set to “ON”, the TV “MENU 1”...

  • Page 38: Setup Tour

    EXIT BY 2 Press MENU M. OPERATE BY -+ D I SPLA Y JVC logo is appear and the SETUP 2 Press MENU M to start the AUTO TOUR function will start. CH PRESET function. For details, see page 6.

  • Page 39: Manual Ch Preset

    Using the TV’s menus If the picture is not clear: MANUAL CH PRESET Fine-tune the TV channel. You can manually preset desired TV channels to desired channels. 1 Press MENU t to select “FINE”. 1 Press MENU T to display the MANUAL FINE “MENU 3”...

  • Page 40: Skip

    Using the TV’s menus SKIP Picture Adjustments You can set undesired channels to be You can adjust the picture as you like. skipped. Channels set to be skipped 1 Press MENU T to display the cannot be selected by the CHANNEL m “MENU 4”...

  • Page 41: Using The Buttons On The Tv

    POWER/ ON TIMER When the Main power is EXIT on, the light is green. When ON TIMER function is on, it is red. 8 Main power button 9 Not application <AV-21D116> MENU CHANNEL VOLUME EXIT TIMER POWER <AV-21V116> POWER MENU...
  • Page 42 Using the buttons on the TV Basic operation Operating menus • Check to make sure the CHILD LOCK You can operate functions in menus using function is set to “OFF”. When the CHILD the front control buttons on the TV. LOCK function is set to “ON”, the TV cannot 1 Press MENU y to display a menu.

  • Page 43: Troubleshooting

    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. Poor picture Cannot turn the TV on •...

  • Page 44: Specifications

    Specifications MODEL AV-14F116 AV-21B116 AV-21C116 AV-21D116 AV-21V116 TV RF systems B/G , I , D/K Colour RF MODE PAL, SECAM systems VIDEO MODE PAL, SECAM, NTSC 3.58 MHz, NTSC 4.43 MHz Channel and frequencies VHF low channel (VL) = 46.25 to 168.25 MHz VHF high channel (VH) = 175.25 to 463.25 MHz...
  • Page 46 SCHEMATIC DIAGRAMS COLOUR TELEVISION AV-21D116 CD-ROM No.SML200607 BASIC CHASSIS No.YA396 COPYRIGHT © 2006 Victor Company of Japan, Limited. 2006/7...

  • Page 47: Standard Circuit Diagram

    AV-21D116 STANDARD CIRCUIT DIAGRAM NOTE ON USING CIRCUIT DIAGRAMS 1.SAFETY Type No indication : Ceramic capacitor The components identified by the symbol and shading are : Metalized mylar capacitor critical for safety. For continued safety replace safety ciritical : Polypropylene capacitor components only with manufactures recommended parts.
  • Page 48 MAIN PWB CIRCUIT DIAGRAM (2/3)(3/3) ....................2-7 PATTERN DIAGRAMS .................2-9 MAIN PWB PATTERN ..........................2-9 VOLTAGE CHARTS ................... 2-11 WAVEFORMS .................... 2-12 USING P.W. BOARD PWB ASS'Y name AV-21D116/B MAIN P.W. BOARD SCG-1539A-BK SEMICONDUCTOR SHAPES TRANSISTOR BOTTOM VIEW FRONT VIEW...

  • Page 49: Block Diagram

    BLOCK DIAGRAM MAIN PWB(1/3, 2/3) POWER LED STB_PW IC703 5V REG.& RESET TIMER LED SF102 TU001 Q102 LED(TIM) IF AMP SAW FILTER TUNER REMOCON REMOCON RECEIVER SCL/SDA HEADPHONE IC651 SPEAKER L AUDIO AMP AUDIO OUT SCL/SDA SCL/SDA SPEAKER R IC701 IC702 MAIN PWB(3/3) MEMORY...

  • Page 50: Circuit Diagrams

    CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/3) SHEET 1 SPEAKER IC704 S702 QSW0619-003Z S704 QSW0619-003Z S705 GP1UM281QK D704 S701 QSW0619-003Z S703 QSW0619-003Z QSW0619-003Z REMOCON RECEIVER TIMER LED LH22440-T16 (ORANGE) POWER LED R721 (RED) R727 R731 R730 R726 4.7k C719 R773 4.7k PC701 D705...

  • Page 51: Main Pwb Circuit Diagram (1/3)

    MAIN PWB CIRCUIT DIAGRAM (2/3),(3/3) SHEET 2 MAIN PWB(1/3) SHEET1 AC110V-AC240V 50Hz/60Hz CN0PW QGA7901F1-02 SK351 QNZ0536-002 R365 VA901 QAF0072-621 TP-47B Y973 2WOMR Y972 L353 QUY160-050Y Q353 2SC4212/Z1/ R362 S901 B-OUT QRZ0107-152Z QSW0750-001 Y961 Q961 F901 QUY160-100Y R353 C356 C901 T3.15AL AC275V QMF51E2-3R15-S 390p...

  • Page 52: Pattern Diagrams

    PATTERN DIAGRAMS MAIN PWB PATTERN R573 Y001 C925 D921 Y002 R574 D925 J002 R983 R575 W543 R802 C842 C008 C571 R982 Q804 W012 C926 R815 W023 R807 R004 C924 FRONT C942 R003 C981 W436 R811 R929 R002 C812 T921 W580 D001 W579 C581...

  • Page 53: Voltage Charts

    VOLTAGE CHARTS <MAIN PWB> <CRT SOCKET PWB> MODE MODE MODE MODE DC ( V ) DC ( V ) DC ( V ) DC ( V ) PIN NO. PIN NO. PIN NO. PIN NO. IC301 Q652 Q351 125.8 Q653 Q352 15.1 123.3...

  • Page 54: Waveforms

    WAVEFORMS -MAIN PWB- (SHEET1) IC301-10 IC301-11 IC301-12 IC301-14 IC301-36 IC301-40 IC301-42 (1µs) (1µs) 3.5 Vp-p 3.5 Vp-p 4.0 Vp-p 0.35 Vp-p 3.0 Vp-p 0.5 Vp-p 2.5 Vp-p IC301-46 IC701-27 IC701-35 5.0 Vp-p 5.0 Vp-p 2.5 Vp-p (SHEET2) IC421-1 IC421-3 IC421-5 IC421-6 Q521-C Q521-B...
  • Page 55 Victor Company of Japan, Limited Display Category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YA396) Printed in Japan...

  • Page 56: Parts List

    PARTS LIST CAUTION The parts identified by the symbol are important for the safety . Whenever replacing these parts, be sure to use specified ones to secure the  safety. The parts not indicated in this Parts List and those which are filled with lines --- in the Parts No. columns will not be supplied. P.W.
  • Page 57 CONTENTS USING P.W. BOARD & REMOTE CONTROL UNIT ....................3-3 EXPLODED VIEW PARTS LIST -1 ..........................3-3 EXPLODED VIEW -1 ..............................3-4 PRINTED WIRING BOARD PARTS LIST ........................3-5 MAIN P.W. BOARD ASS'Y (SCG-1539A-BK) ....................3-5 REMOTE CONTROL UNIT PARTS LIST (RM-C1121-1H) ..................3-8 PACKING ..................................

  • Page 58: Using P.w. Board & Remote Control Unit

    USING P.W. BOARD & REMOTE CONTROL UNIT P.W.B ASS'Y AV-21D116/B MAIN P.W.B SCG-1539A-BK REMOTE CONTROL UNIT RM-C1121-1H EXPLODED VIEW PARTS LIST -1  Ref.No. Part No. Part Name Description Local  V01 A51LZM10X06AN25 PICTURE TUBE(ITC) Inc.DEF YOKE, PC MAGNET  L01...

  • Page 59: Exploded View -1

    EXPLODED VIEW -1 CRT SOCKET PWB (Within MAIN PWB) T522 MAIN PWB RATING LABEL 3-4(No.YA396)

  • Page 60: Printed Wiring Board Parts List

    PRINTED WIRING BOARD PARTS LIST MAIN P.W. BOARD ASS'Y (SCG-1539A-BK) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C001 QETN1HM-106Z E CAPACITOR 10uF 50V M C002 NCB31HK-103X C CAPACITOR 0.01uF 50V K IC301 NN5198K C004...
  • Page 61 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C652 NCB31HK-473X C CAPACITOR 0.047uF 50V K R303 NRSA63J-101X MG RESISTOR 100Ω 1/16W J C653 QETN1HM-106Z E CAPACITOR 10uF 50V M R304 NRSA63J-101X MG RESISTOR 100Ω...
  • Page 62 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R665 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J J003 QNN0281-003 PIN JACK VIDEO IN(FRONT) R666 NRSA63J-101X MG RESISTOR 100Ω 1/16W J J004 QNN0281-002 PIN JACK AUDIO IN(FRONT) R667 QRE121J-101Y...

  • Page 63: Remote Control Unit Parts List (Rm-C1121-1H)

    REMOTE CONTROL UNIT PARTS LIST (RM-C1121-1H)  Ref No. Part No. Part Name Description Local R56-1400 BATTERY COVER PACKING PACKING PARTS LIST  Ref.No. Part No. Part Name Description Local GG10281-012A-H PACKING CASE GG10296-001A-H CUSHION ASS'Y 4pcs in 1set GG30097-003A-H POLY BAG GG30096-001A-H POLY BAG...

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