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JVC AV-2956BE Service Manual
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JVC AV-2956BE Service Manual

JVC AV-2956BE Service Manual

Flat colour television
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Download this manual See also: Instruction Manual
SERVICE MANUAL
FLAT COLOUR TELEVISION
10
2006
YA466
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
AV-2956BE
RM-C1286

TABLE OF CONTENTS

COPYRIGHT © 2006 Victor Company of Japan, Limited
BASIC CHASSIS
CW3
No.YA466
2006/10

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  • Page 1: Table Of Contents

    SERVICE MANUAL FLAT COLOUR TELEVISION YA466 2006 AV-2956BE BASIC CHASSIS RM-C1286 TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Items Contents Dimensions (W × H × D) 74.4 cm × 60.0 cm × 49.2 cm Mass 40 kg TV RF System B, G, I, D, K, M Colour System PAL / SECAM / NTSC 3.58 / NTSC 4.43 Stereo System A2 (B/G) / NICAM (B/G, I, D/K) Teletext System...

  • 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 DVD PICTURE MODE This function can enhance the picture quality of DVD. The screen can be made sharp or soft by this setting. AUTO SIGNAL DETECT When input DVD signal to VIDEO-2, detect the input signal and change the input mode to VIDEO-2 automatically.
  • Page 5 TECHNINAL INFORMATION 2.2.1 MAIN MI-COM (CPU) PIN FUNCTION Pin name Function Pin name Function VssP2 Not used VssC4 FbiSo Flyback input/sandcastle output V1.8C4 1.8V (Digital) Hout Horizontal output V3.3A3 3.3V VssComb VrefP_Sdac 3.3V (Positive) V5Comb VrefN_Sdac Vin/R2/Pr PIP R input VrefP_Sdac 3.3V (Negative) Uin/B2/Pb...

  • Page 6: Disassembly

    SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE 3.1.1 REMOVING THE REAR COVER • Unplug the power cord. (1) Remove the 9 screws [A], and 2 screws [B]. (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 7 FRONT CABINET SPEAKER CRT SOCKET PWB (Within MAIN PWB) FRONT LED PWB (Within MAIN PWB) POWER CORD MAIN PWB SPEAKER REAR COVER Fig.1 (No.YA466)1-7...
  • Page 8 MEMORY IC REPLACEMENT • This model uses the memory IC. Memory IC: IC702 on MAIN PWB The memory IC memorizes data for correctly operating the video and deflection circuits. When replacing the memory IC, be sure to use the same type IC written with the initial values of data. In other words, use the specific IC listed in "PRINTED WIRING BOARD PARTS LIST".
  • Page 9 3.2.2 SYSTEM CONSTANT SETTING Setting item Setting value SYSTEM MULTI COMB TILT TEXT LANGUAGE E/R/U SOUND STEREO BILINGUAL BLUE BACK MUTE COLOUR AUTO ECO SENSOR SIMPLE INTER CARRIER SURROUND PICTURE BOOSTER COMPONENT S INPUT MAXX BASS 3.2.3 SETTINGS OF FACTORY SHIPMENT 3.2.3.3 REMOTE CONTROL MENU OPERATION 3.2.3.1...

  • Page 10: Theater

    (3) FEATURE SETTING 3.2.4 SERVICE MODE SETTING ITEMS Setting item Setting position Setting item Setting value DVD MENU 1. IF 1. VCO 2. DELAY POINT AUTO SIGNAL DETECT DVD PICTURE MODE 2. V / C 1.SCREEN (READ DATA) DVD THEATER STATUS 2.CUTOFF / CUT OFF THEATER (B/G) 3.WDR (R/G/B) DVD SOUND MODE...
  • Page 11 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 12: 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) HV voltmeter components.
  • Page 13 ADJUSTMENT LOCATION MAIN PWB ASS'Y (FRONT LED) CN10A S804 S802 J808 J807 J806 J809 S805 S803 S801 POWER SW CN00A FRONT S901 CN00S POWER CORD IC702 DEG COIL IC701 YOKE J801 J802 J803 J804 CN00C MAIN PWB ASS'Y CN00B CN00C CN00B TU001 UPPER : FOCUS...
  • Page 14 BASIC OPERATION OF SERVICE MODE 4.6.1 TOOL OF SERVICE MODE OPERATION Operate the SERVICE MODE with the REMOTE CONTROL UNIT. 4.6.2 SERVICE MODE ITEMS With the SERVICE MODE, various adjustments can be made, and they are broadly classified in the following items of settings. 1.IF This mode adjusts the setting values of the IF circuit.

  • Page 15: News

    4.6.4 SERVICE MODE FLOW CHART 1. IF SERVICE MENU SERVICE MENU IF SERVICE MENU 1. IF 2. V/C VCO (CW) ***** 3. AUDIO 4. DEF TOO HIGH 5. VSM W/B 6. STATUS 1. VCO ABOVE REFERENCE 7. PLUG & PLAY (ON) JUST REFERENCE 2.
  • Page 16 INITIAL SETTING VALUE OF SERVICE MODE (1) Adjustment of the SERVICE MODE 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 value. (2) Do not change the initial setting values of the setting items not listed in "ADJUSTMENT PROCEDURE".
  • Page 17 [3. AUDIO] *This submenu is for display only, no adjustment is required. Function Item Setting value AUDIO 1. DC XO ADJ 12H* 2. NICAM LOWER ERR LIM 3. NICAM UPPER ERR LIM 4. A2 ID THR Function MODE Item 100Hz 300Hz 1kHz 3kHz...
  • Page 18 [5. VSM W/B] Setting value Variable Setting item range BRIGHT SOFT STANDARD THEATER 1. BRIGHT -16 - 16 2. CONT. -16 - 16 3. COLOUR -16 - 16 4. SHARP -16 - 16 5. HUE -16 - 16 Setting value Variable Setting item range...

  • Page 19: No.ya466)1

    ADJUSTMENT PROCEDURE 4.8.1 CHECK ITEM Measuring Item Test point Adjustment part Description instrument B1 VOLTAGE DC voltmeter CN00B connector (1) Receive any broadcast. 1-pin:TP-B1 (2) Connect a DC voltmeter to 1-pin and 5-pin of CN00B Remote 3-pin:TP-E connector. control unit [MAIN PWB] (3) Make sure that the voltage is DC135V ±2.0V.

  • Page 20: Bright

    4.8.2 TUNER / IF CIRCUIT 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 21 Measuring Item Test point Adjustment part Description instrument V. POSITION Signal [4. DEF] PAL V. POSITION generator 1. V-SHIFT (1) Receive a circle pattern signal of vertical frequency 50Hz (PAL). Remote (2) Select 4. DEF from the SERVICE MODE. control unit (3) Select <1.
  • Page 22 Measuring Item Test point Adjustment part Description instrument H. SIZE Signal [4.DEF] PAL H. SIZE generator 5. H-SIZE (1) Receive a PAL crosshatch signal. (2) Select 4. DEF from the SERVICE MODE. Remote (3) Select <5. H-SIZE>. control unit (4) Set the initial setting value of <5. H-SIZE>. (5) Adjust <5.
  • Page 23 Measuring Item Test point Adjustment part Description instrument V.LINEARITY Signal [4. DEF] PAL V. LINEARITY generator 12. V-S. CR (1) Receive a PAL crosshatch signal. 13. V-LIN (2) Select 4. DEF from the SERVICE MODE. Remote (3) Select <12. V-S.CR>. control unit (4) Set the initial setting value of <12.
  • Page 24 NTSC V. SIZE (1) Receive a crosshatch signal of vertical frequency 60Hz (NTSC). (2) Follow the same step 2 to 8 as in PAL V. SIZE. AV-2956BE Vertical amplitude 305 mm V. SLOPE Signal [4.DEF] PAL V. SLOPE generator 2.
  • Page 25 Measuring Item Test point Adjustment part Description instrument SIDE PIN Signal [4. DEF] PAL SIDE PIN generator 7. EW-PIN (1) Receive a PAL crosshatch signal. (2) Set the COMPRESS(16 : 9) to ON. Remote (3) Select 4. DEF from the SERVICE MODE. control unit (4) Select <7.
  • Page 26 VIDEO - 2 SET: COMPONENT Measuring Item Test point Adjustment part Description instrument H. POSITION Signal [4. DEF] (1) Receive a PAL circle pattern signal to VIDEO-2 generator 4. H-CENT component terminal. (2) Select VIDEO-2 SET from the MENU and set Remote VIDEO-2 SET to COMPONENT.
  • Page 27 (1) Receive a NTSC 3.58MHz broadcast. (2) Follow the same step 2 to 8 as in PAL COLOUR. Voltage setting VOLTAGE (W-B) NTSC 4.43 COLOUR NTSC SECAM • When NTSC 3.58 COLOUR is set, NTSC 4.43 AV-2956BE +28V +20(RF) COLOUR will be automatically set. (No.YA466)1-27...
  • Page 28 • When NTSC 3.58 TINT is set, NTSC 4.43 TINT will be VOLTAGE (W-B) automatically set. NTSC 3.58 (TINT) PAL TINT (DVD) AV-2956BE +3V(RF) +20V PAL TINT (DVD) (1) Receive a PAL colour bar signal (full field colour bar 75% white).
  • Page 29 4.8.6 VSM PRESET SETTING Measuring Item Test point Adjustment part Description instrument VSM PRESET Remote [5.VSM W/B] (1) Select 5.VSM W/B from the SERVICE MODE. control unit 1. BRIGHT (2) Select the BRIGHT with the [OK] key. 2. CONT (3) Adjust the [MENU / ] key to bring the set values 3.
  • Page 30 4.8.7 PURITY AND CONVERGENCE PURITY ADJUSTMENT NOTE: The final adjustment of CONVERGENCE must be done after WEDGE DEFLECTION the FOCUS adjustment. (CONVERGENCE is changed by YOKE FOCUS adjustment.) When makes difference by FOCUS adjustment, should be reconfirming PURITY adjustment. (1) Demagnetize CRT with the demagnetizer. P / C (2) Loosen the retainer screw of the deflection yoke.
  • Page 31 STATIC CONVERGENCE ADJUSTMENT (1) Input a crosshatch signal. (2) Using 4-pole convergence magnets, overlap the red and blue lines in the centre of the screen (Fig.1) and turn them (FRONT VIEW) to magenta (red/blue). (3) Using 6-pole convergence magnets, overlap the magenta (red/blue) and green lines in the centre of the screen and turn them to white.

  • Page 32: Troubleshooting

    SECTION 5 TROUBLESHOOTING SELF CHECK FUNCTIONS 5.1.1 OUTLINE This model has self check functions given below. When an abnormality has been detected, the SUB POWER is turned off and POWER LED flashes to inform of the failure. An abnormality is detected by the signal input state of the control line connected to the microcomputer.
  • Page 33 Victor Company of Japan, Limited Display Category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YA466) Printed in Japan...
  • Page 34 Remote control buttons and basic functions ......4 AV-2986ME TV buttons and functions ............6 AV-2986SE Setting up your TV ..............7 AV-2956BE Basic setting for picture ..............9 Advanced setting for picture ............. 11 AV-2956ME Original features for picture ............12 Basic setting for sound .............14 Advanced setting for sound ............15...
  • Page 35 Thank you for buying this JVC colour television. To make sure you understand how to use your new TV, please read this manual thoroughly before you begin. WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE 7 This TV can be turned on/off power by connecting/disconnecting the AC THIS APPLIANCE TO RAIN OR MOISTURE.

  • Page 36: Knowing Your Tv's Features

    Knowing your TV’s features Main features DVD MENU Just connect DVD player to the television. The television will detect DVD signal and display picture on the screen automatically and you can adjust pictures and sound while you are watching DVD as your desire. When disconnect DVD player, the television will display the previous channel.

  • Page 37: Remote Control Buttons And Basic Functions

    Remote control buttons and basic functions No. Press 1 POWER Turn on or off the TV from standby mode. 2 MENU/OK Display menu and confi rm selected function. 3 5 / ∞ / 2 / 3 Select and adjust menu function. "...
  • Page 38 Remote control buttons and basic functions (continued) How to operate menus and menus locations Top menu 2nd menu Location 3nd menu Location MENU PICTURE PICTURE MODE – – Operation Note PICTURE SETTING P.10 CONTRAST P.10 Display the MENU Press the MENU/OK button 2. To exit the MENU, BRIGHT P.10...

  • Page 39: Tv Buttons And Functions

    TV buttons and functions The illustrations shown below is for AV-2156BE and AV-2988SE only, which are used for explanation purpose. Your TV may not look exactly the same as illustrated. No. Button/terminal Description Page Front of the TV 1 L (main power) Press to turn on or turn off the TV’s main power.

  • Page 40: Setting Up Your Tv

    INPUT OVER / MONO MONO JVC logo will appear on the screen again at the phase of “SETUP TOUR RESTART?” function. Then the initial setting can be performed according to page 8. Note: The illustration shown is just a sample. It may not be same as your TV.
  • Page 41 Setting up your TV (continued) Making the initial settings When turn on the TV at Set up your TV by pressing MENU/OK button or waiting for 15 seconds, then operate the TV by following the steps the next time below: AUTO PROGRAM LANGUAGE TEXT LANGUAGE...

  • Page 42: Basic Setting For Picture

    Basic setting for picture COLOUR SYSTEM PICTURE MODE You can select the appropriate colour system when the picture is You can choose the desired picture setting with one-touch. not clear or no colour appears. Press the PICTURE MODE button to select a setting. Press the COLOUR SYSTEM button to select a setting.

  • Page 43: Picture Setting

    Basic setting for picture (continued) PICTURE SETTING WHITE BALANCE You can adjust the desired picture setting when selecting USER in You can change the white balance of the picture to better match PICTURE MODE. the type of video being viewed. Select WHITE BALANCE in the PICTURE menu, then choose the Select USER in PICTURE MODE under PICTURE menu.

  • Page 44: Advanced Setting For Picture

    Advanced setting for picture AI ECO SENSOR (ECO)/ECO MODE Press the 5/∞ buttons until the picture becomes level. Then press the MENU/OK button. You can adjust TV screen contrast according to the brightness of your room. Press the ECO button to select the desired mode. COMPRESS (16:9) Cancel the function.

  • Page 45: Original Features For Picture

    Original features for picture TELETEXT You can display a sub picture within the main picture on the screen. You can watch the Teletext broadcast channel with TEXT function. Press the PIP operation buttons to display and change the sub Press the TEXT button to select the desired mode as follows: picture setting.

  • Page 46: Text Language

    Original features for picture (continued) TEXT LANGUAGE You can set the Teletext language group that corresponds to the programmes. Select TEXT LANGUAGE in the INSTALL menu, then choose the desired language group. MENU INSTALL menu TEXT LANGUAGE GROUP-1 English, German, Swedish, Finnish, Danish, Hungarian, Italian, French, Spanish, Portuguese, Turkish GROUP-2 Polish, German, Estonian, Slovenian, Czech, Slovakian,...

  • Page 47: Basic Setting For Sound

    Basic setting for sound SOUND SYSTEM SOUND MODE You can select an appropriate sound system when abnormal sound You can choose the desired sound setting. occurs even when the picture appears normally. Select the SOUND MODE in SOUND menu, then choose the setting. Press the SOUND SYSTEM button to select a setting.

  • Page 48: Advanced Setting For Sound

    Advanced setting for sound CINEMA SURROUND EQUALIZER You can enjoy an enhanced sound for wider audience. You can adjust the sound level of each frequencies when selecting Press the CINEMA SURROUND button to select a setting. USER mode in SOUND MODE. Cancel the function.

  • Page 49: Dvd Menu

    DVD Menu AUTO SIGNAL DETECT Enjoy movie playback with suitable colour temperature, sharp subtitles and improved gradation for black, like in a theater. When the DVD input signal is detected, the input mode will be changed Cancel the function. to VIDEO-2 automatically. And when the DVD input signal is not detected, the input mode will be changed to RF previous input mode.

  • Page 50: Customized Setting

    Customized setting Choose the PR (channel) by pressing the 2/3 button. External input, AV position and any un-preset channel cannot be You can reduce the picture noise. chosen for PR. Select VNR in PICTURE menu, then choose a setting of VNR function. Set the ON TIMER to your desired period of time by pressing the 2/3 button.
  • Page 51 Customized setting (continued) VIDEO-2 SETTING DISPLAY You can display the programme number, video terminal number You can set the VIDEO-2 SETTING according to the video signal and PR list on the screen. output from external devices connected to the VIDEO-2 terminal. Press the DISPLAY button to select the desired mode: Select VIDEO-2 SETTING in INSTALL menu, then choose a setting (Factory setting is COMPONENT).

  • Page 52: Tv Channel Presetting

    TV channel presetting To register the TV channels automatically Choose EDIT/MANUAL, then press the MENU/OK button. (AUTO PROGRAM) EDIT menu appears. You can register the TV channels into the TV’s channel list EDIT automatically. CH/CC CH 04 Display the INSTALL menu. CH 76 CH 78 CH 05...
  • Page 53 TV channel presetting (continued) To edit the channel list (PR LIST) To add in the new channel (MOVE and DELETE in the EDIT menu) (INSERT in the EDIT menu) You can edit the TV channel list as you like. You can add in new channels in the TV channel list as you like. Note: After this operation, other channel’s PR numbers will be You need to fi...
  • Page 54 TV channel presetting (continued) CH/CC number CCIR OIRT AUSTRALIA CCIR OIRT AUSTRALIA CH 33 US-33, W+48 AU-34 CC 18 S-18 CH 34 US-34, W+49 AU-35 CC 19 S-19 When you want to use the INSERT function CH 35 US-35, W+50 AU-36 CC 20 S-20...

  • Page 55: Additional Preparation

    Additional preparation The illustrations shown in this section are for AV-2156BE and AV- Connecting to rear component/video input 2988SE, which are used for explanation purpose. Your TV may not terminals and output terminals look exactly the same as illustrated. Rear of TV Before connecting •...

  • Page 56: Troubleshooting

    Troubleshooting If a problem occurs when you are using the TV, check the below • Colour patches appear • This may due to the magnetized device such as a troubleshooting guide before calling for repair. at the corner of the speaker near to your TV.

  • Page 57: Specifi Cations

    Specifi cations TV RF systems B, G, I, D, K, M Colour systems PAL, SECAM, NTSC 3.58 MHz, NTSC 4.43 MHz Receiving channels VHF low channel (VL), VHF high channel (VH), UHF channel (U) Receives cable channels in mid band, super band and hyper band. Power requirements For AV-25, AV-29 series: AC 220 to 240 V, 50 Hz / 60 Hz...

  • Page 58: 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 59 MAIN P.W. BOARD ASS'Y (SCW-1957A-H2) ....................3-4 REMOTE CONTROL UNIT PARTS LIST (RM-C1286-1H) ..................3-9 PACKING ..................................3-9 PACKING PARTS LIST ............................... 3-9 USING P.W. BOARD & REMOTE CONTROL UNIT P.W.B ASS'Y AV-2956BE MAIN P.W.B SCW-1957A-H2 REMOTE CONTROL UNIT RM-C1286-1H EXPLODED VIEW PARTS LIST ...

  • Page 60: Exploded View

    EXPLODED VIEW CRT SOCKET PWB (Within MAIN PWB) FRONT LED PWB T522 (Within MAIN PWB) MAIN PWB RATING LABEL (No.YA466)3-3...

  • Page 61: Printed Wiring Board Parts List

    PRINTED WIRING BOARD PARTS LIST MAIN P.W. BOARD ASS'Y (SCW-1957A-H2) Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local D101 1SS356-X SI DIODE D102 1SS356-X SI DIODE IC201 STK396-110A D201 FR105SGT-T2 SI DIODE IC351 TDA6107AJF/N1 D341...
  • Page 62 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local PC901 PS2581AL1/QW/ PHOTO COUPLER C608 QETN1CM-227Z E CAPACITOR 220uF 16V M C609 QETN1HM-336Z E CAPACITOR 33uF 50V M C001 NCB31HK-103X C CAPACITOR 0.01uF 50V K C610 QETN1CM-227Z E CAPACITOR...
  • Page 63 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C793 QETN1HM-106Z E CAPACITOR 10uF 50V M R412 NRSA63J-222X MG RESISTOR 2.2kΩ 1/16W J C802 QETN1HM-106Z E CAPACITOR 10uF 50V M R421 NRSA63J-103X MG RESISTOR 10kΩ...
  • Page 64 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R706 NRSA63J-221X MG RESISTOR 220Ω 1/16W J R806 NRSA63J-750X MG RESISTOR 75Ω 1/16W J R707 NRSA63J-563X MG RESISTOR 56kΩ 1/16W J R807 QRE121J-101Y C RESISTOR 100Ω...
  • Page 65 Ref No. Part No. Part Name Description Local K201 QQR0582-001Z FERRITE BEADS K921 QQR1114-001Z FERRITE BEADS K951 QQR1114-001Z FERRITE BEADS K952 QQR1113-001Z FERRITE BEADS K953 QQR1113-001Z FERRITE BEADS K954 QQR1113-001Z FERRITE BEADS K955 QQR1113-001Z FERRITE BEADS LC801 QQR1199-002 EMI FILTER LC802 QQR1199-002 EMI FILTER...

  • Page 66: Remote Control Unit Parts List (Rm-C1286-1H)

    REMOTE CONTROL UNIT PARTS LIST (RM-C1286-1H)  Ref No. Part No. Part Name Description Local R25-8566 BATTERY COVER PACKING PACKING PARTS LIST  Ref.No. Part No. Part Name Description Local GG10285-016B-H PACKING CASE GG10437-001B-H CUSHION ASS'Y 5pcs in 1set GG30097-004B-H POLY BAG GG30096-001B-H POLY BAG...
  • Page 67 SCHEMATIC DIAGRAMS FLAT COLOUR TELEVISION YA448 2006 AV-2956BE CD-ROM No.SML200610 BASIC CHASSIS RM-C1286 No.YA466 COPYRIGHT © 2006 Victor Company of Japan, Limited 2006/10...

  • Page 68: Standard Circuit Diagram

    AV-2956BE 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 69 MAIN PWB CIRCUIT DIAGRAM (3/4), (4/4) ....................2-7 PATTERN DIAGRAM ..................2-9 MAIN PWB PATTERN ..........................2-9 VOLTAGE CHARTS ................... 2-11 WAVEFORMS .................... 2-12 USING P.W. BOARD P.W.B ASS’Y name AV-2956BE MAIN P.W. BOARD SCW-1957A-H2 SEMICONDUCTOR SHAPES TRANSISTOR BOTTOM VIEW FRONT VIEW...

  • Page 70: Block Diagram

    BLOCK DIAGRAM MAIN PWB IC351 MAIN MICRO COMPUTER/TELETEXT DECODE/IF . VIDEO . RGB . SYNC . DEF. PROCESS IC701 RGB OUT IC702 TU001 MAIN MEMORY TUNER 108,109 SCL1, SDA1 I 2 C 127,128 SCL0, SDA0 MICRO TELETEXT DECODER COMPUTER ROTATION DIGITAL SIGNAL PROCESS 2, 8 IC481...
  • Page 71 CIRCUIT DIAGRAMS MAIN PWB(4/4) ADJUSTMENT VIDEO-3 (CRT SOCKET) MAIN PWB CIRCUIT DIAGRAM (1/4) ,(2/4) SHEET1 MAIN PWB ASS'Y(2/4) (FRONT LED) CONNECTOR INPUT SHEET2 CN10T SCW-1957A-H2 CN00C CN00T QGA2501F1-06 QJL001-085633-E CN00R IC801 QGA2501C5-03Z GP1UE281QKVF IC302 REMOTECON RECEIVER D808 J806 C806 LH22440-T16 QNN0281-003 C808 100/16...

  • Page 72: Circuit Diagram

    MAIN PWB CIRCUIT DIAGRAM (3/4),(4/4) SHEET2 MAIN PWB ASS'Y(4/4) MAIN PWB(1/4) SHEET1 (CRT SOCKET) SCW-1957A-H2 IC351 TDA6107AJF/N1 RY901 QSK0061-002 F901 3.3V_STB QMF51E2-4R0-S AC220V-AC240V D956 C351 C968 1000p 100/16 R351 TP-47B VA901 R910 R967 50Hz/60Hz C970 C352 CN0PW QAF0060-621 QRZ0107-474Z C910 R352 10/250 R358...

  • Page 73: Pattern Diagram

    PATTERN DIAGRAM MAIN PWB PATTERN FRONT FRONT (No.YA466)2-9 2-10(No.YA466)

  • Page 74: Voltage Charts

    VOLTAGE CHARTS <MAIN PWB> <MAIN PWB (FRONT LED)> MODE MODE MODE MODE MODE DC ( V ) DC ( V ) DC ( V ) DC ( V ) DC ( V ) PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.

  • Page 75: Waveforms

    WAVEFORMS -MAIN PWB- IC401-1 IC401-3 IC401-6 IC401-7 IC401-5 1.0Vp-p 27Vp-p 30Vp-p 0.8Vp-p 53Vp-p IC701-10 IC701-11 IC701-22 IC701-23 IC701-48 IC701-66 IC701-67 (0.2µs) (0.2µs) 2.3Vp-p 2.7Vp-p 1.0Vp-p 1.3Vp-p 2.0Vp-p 5.0Vp-p 3.0Vp-p IC701-74 IC701-85 IC701-86 IC701-87 1.2Vp-p 1.4Vp-p 1.4Vp-p 1.7Vp-p T522-2 T522-4 T522-6 T522-7 T522-8 T522-9...
  • Page 76 Victor Company of Japan, Limited Display Category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YA466) Printed in Japan...

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