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JVC InteriArt LT-30E45SU Service Manual
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JVC InteriArt LT-30E45SU Service Manual

JVC InteriArt LT-30E45SU Service Manual

Wide lcd panel television
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SERVICE MANUAL
WIDE LCD PANEL TELEVISION
8
2005
YA232
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
LT-30E45SU,
LT-30E45SJ,
LT-30E45SU
LT-30E45SU
MENU
BACK
P
PC
TV

TABLE OF CONTENTS

COPYRIGHT © 2005 Victor Company of Japan, Limited
,
/Z
/N
No.YA232
2005/8

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Summary of Contents for JVC InteriArt LT-30E45SU

  • Page 1: Table Of Contents

    SERVICE MANUAL WIDE LCD PANEL TELEVISION YA232 2005 LT-30E45SU, LT-30E45SJ, LT-30E45SU LT-30E45SU MENU BACK TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .

  • Page 2: Specification

    SPECIFICATION Items Contents Dimensions ( W × H × D ) 84.7cm × 52.2cm × 26.0cm [Included stand] 84.7cm × 49.0cm × 10.2cm [TV only] Mass 14.8kg [Included stand] 13.0kg [TV only] Power Input AC100 to AC240 V, 50 Hz Power Consumption 150W (Standby: 4.0W) TV RF System...

  • Page 3: Safety Precautions

    SECTION 1 PRECAUTION SAFETY PRECAUTIONS (1) The design of this product contains special hardware, (6) Isolation Check (Safety for Electrical Shock Hazard) many circuits and components specially for safety After re-assembling the product, always perform an purposes. For continued protection, no changes should be isolation check on the exposed metal parts of the cabinet made to the original design unless authorized in writing by (antenna terminals, video/audio input and output terminals,...

  • Page 4: Installation Requirements

    INSTALLATION 1.2.1 HEAT DISSIPATION 1.2.3 INSTALLATION REQUIREMENTS If the heat dissipation vent behind this unit is blocked, cooling To ensure safety in an emergency such as an earthquake, and efficiency may deteriorate and temperature inside the unit will to prevent accidents, ensure that measures are taken to prevent rise.
  • Page 5 HANDLING LCD PANEL 1.3.1 PRECAUTIONS FOR TRANSPORTATION 1.3.2 OPTICAL FILTER (ON THE FRONT OF THE LCD PANEL) When transporting the unit, pressure exerted on the internal LCD (1) Avoid placing the unit under direct sunlight over a panel due to improper handling (such as tossing and dropping) prolonged period of time.

  • Page 6: Main Difference List

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS FEATURES T-V LINK OFF TIMER When you have a T-V LINK compatible VCR connected to the This function can set the TV to automatically turn off after a set EXT-2 Terminal on the TV,it is easier to set up the VCR and to time.
  • Page 7 TECHNICAL INFORMATION 2.4.1 LCD PANEL This unit uses the flat type panel LCD (Liquid Crystal Display) panel that occupies as little space as possible, instead of the conventional CRT (Cathode Ray Tube), as a display unit. Since the unit has the two polarizing filter that are at right angles to each other, the unit adopts "normally black" mode, where light does not pass through the polarizing filter and the screen is black when no voltage is applied to the liquid crystals.

  • Page 8: Service Mode Screen

    BASIC OPERATION OF SERVICE MODE 2.5.2 HOW TO EXIT THE SERVICE MODE Press the [MENU] key to exit the Service mode. 2.5.1 HOW TO ENTER THE SERVICE MODE (1) Press [MENU] remote control unit 2.5.3 CHANGE AND MEMORY OF SETTING VALUE simultaneously to display the MENU SCREEN.
  • Page 9 2.5.5 SERVICE MODE SETTING ITEMS Setting menu Setting items Variable range Setting value display blank color brack / red / green / blue black scart prescale 0 - 127 nicam prescale 0 - 127 fm/am prescale 0 - 127 subwoofer corner 0 - 7 subwoofer level 0 - 32...

  • Page 10: Disassembly Procedure

    SECTION 3 DISASSEMBLY DISASSEMBLY PROCEDURE NOTE: • Make sure that the power cord is disconnected from the outlet. • Pay special attention not to break or damage the parts. • When removing each board, remove the connectors as required. Taking notes of the connecting points (connector numbers) makes service procedure manageable.
  • Page 11 REAR COVER CONTROL KNOB STAND LEFT FRAME RIGHT FRAME MAIN PWB TERMINAL BASE CONTROL BUTTON PWB AMPLIFIER PWB POWER PWB NOISE FILTER PWB FAV PWB POWER UNIT CONTROL BASE LED PWB FRONT Fig.1 (No.YA232)1-11...
  • Page 12 3.1.11 REMOVING THE SPEAKER (Fig.2) • Remove the STAND. • Remove the REAR COVER. (1) Remove the 4 screws [A], then remove the SPEAKER with SPEAKER BASE. (2) Remove the 4 screws [B], then remove the SUB SPEAKER (L/R). (3) Remove the 8 screws [C], then remove the SPEAKER from the SPEAKER BASE.
  • Page 13 MAIN BASE LCD PANEL UNIT SUB SPEAKER SPEAKER SPEAKER SPEAKER BASE SPEAKER BASE SUB SPEAKER FRONT PANEL FRONT Fig.2 (No.YA232)1-13...

  • Page 14: Memory Ic Replacement

    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 SETTINGS OF FACTORY SHIPMENT 3.2.1.1 BUTTON OPERATION 3.2.1.2...

  • Page 15: Soldering Iron

    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 16: Adjustment

    SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. 1-16 (No.YA232)
  • Page 17 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY DISPLAY CATEGORY 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YA232) Printed in Japan...

  • Page 18: Schematic Diagrams

    SCHEMATIC DIAGRAMS WIDE LCD PANEL TELEVISION YA232 2005 LT-30E45SU, LT-30E45SJ, LT-30E45SU LT-30E45SU CD-ROM No.SML200508 MENU BACK No.YA232 COPYRIGHT © 2005 Victor Company of Japan, Limited 2005/8...

  • Page 19: Standard Circuit Diagram

    LT-30E45SU, LT-30E45SJ, LT-30E45SU , LT-30E45SU 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 20: Semiconductor Shapes

    CONTENTS SEMICONDUCTOR SHAPES ..............2-2 BLOCK DIAGRAM ..................2-3 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM ........................ 2-5 CONTROL PWB CIRCUIT DIAGRAM ...................... 2-24 AMPLIFIER PWB CIRCUIT DIAGRAM ..................... 2-25 AV JACK PWB CIRCUIT DIAGRAM ......................2-27 LED PWB CIRCUIT DIAGRAM ......................... 2-28 NOISE FILTER PWB CIRCUIT DIAGRAM ....................

  • Page 21: Block Diagram

    BLOCK DIAGRAM TFT-LCD PANEL SIDE AV S-VIDEO IN SDRAM CVBS IN 2MX32bits Audio Amplifier LVDS TDA3002D2 DS90C385MTD MST9883C S-VIDEO CVBS MAIN OUT LR IN LR R (0-7) B (0-7) G (0-7) SCALER V SYNC SC1_OUT_LR H SYNC SC2_OUT_LR DENTERLACER LINE OUT LR GM6015 SC1_IN_LR AUDIO PROCESSOR...

  • Page 22: Circuit Diagrams

    CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/10) MAIN PWB ASS'Y (1/10) VE-20185787 (No.YA232)2-5 2-6(No.YA232)
  • Page 23 MAIN PWB CIRCUIT DIAGRAM (2/10) MAIN PWB ASS'Y (2/10) VE-20185787 (No.YA232)2-7 2-8(No.YA232)
  • Page 24 MAIN PWB CIRCUIT DIAGRAM (3/10) MAIN PWB ASS'Y (3/10) VE-20185787 (No.YA232)2-9 2-10(No.YA232)
  • Page 25 MAIN PWB CIRCUIT DIAGRAM (4/10) MAIN PWB ASS'Y (4/10) VE-20185787 (No.YA232)2-11 2-12(No.YA232)
  • Page 26 MAIN PWB CIRCUIT DIAGRAM (5/10) MAIN PWB ASS'Y (5/10) VE-20185787 (No.YA232)2-13 2-14(No.YA232)
  • Page 27 MAIN PWB CIRCUIT DIAGRAM (6/10) NOTE : Refer to the part list for the part number of IC24. MAIN PWB ASS'Y (6/10) VE-20185787 (No.YA232)2-15 2-16(No.YA232)
  • Page 28 MAIN PWB CIRCUIT DIAGRAM (7/10) MAIN PWB ASS'Y (7/10) VE-20185787 (No.YA232)2-17 2-18(No.YA232)
  • Page 29 MAIN PWB CIRCUIT DIAGRAM (8/10) MAIN PWB ASS'Y (8/10) VE-20185787 (No.YA232)2-19 2-20(No.YA232)
  • Page 30 MAIN PWB CIRCUIT DIAGRAM (9/10) MAIN PWB ASS'Y (9/10) VE-20185787 (No.YA232)2-21 2-22(No.YA232)

  • Page 31: Main Pwb Circuit Diagram

    MAIN PWB CIRCUIT DIAGRAM (10/10) CONTROL PWB CIRCUIT DIAGRAM CONTROL PWB ASS'Y VE-20148281 MAIN PWB ASS'Y (10/10) VE-20185787 NOTE : Refer to the part list for the part number of IC33. (No.YA232)2-23 2-24(No.YA232)

  • Page 32: Amplifier Pwb Circuit Diagram

    AMPLIFIER PWB CIRCUIT DIAGRAM AMPLIFIER PWB ASS'Y VE-20154273 (No.YA232)2-25 2-26(No.YA232)

  • Page 33: Av Jack Pwb Circuit Diagram

    AV JACK PWB CIRCUIT DIAGRAM LED PWB CIRCUIT DIAGRAM LED PWB ASS'Y VE-20167056 NOISE FILTER PWB CIRCUIT DIAGRAM AV JACK PWB ASS'Y NOISE FILTER PWB ASS'Y VE-20185947 [LT-30E45SJ,LT-30E45SU, LT-30E45SU/Z] VE-20154613 VE-20148274 [LT-30E45SU/N] (No.YA232)2-27 2-28(No.YA232)

  • Page 34: Regulator Pwb Circuit Diagram

    REGULATOR PWB CIRCUIT DIAGRAM REGULATOR PWB ASS'Y VE-20151250 (No.YA232)2-29 2-30(No.YA232)

  • Page 35: Pattern Diagrams

    PATTERN DIAGRAMS MAIN PWB PATTERN (No.YA232)2-31 2-32(No.YA232)

  • Page 36: Amplifier Pwb Pattern

    AMPLIFIER PWB PATTERN AMPLIFIER PWB PATTERN NOISE FILTER PWB PATTERN [SOLDER SIDE] [PARTS SIDE] AV JACK PWB PATTERN REGULATOR PWB PATTERN [SOLDER SIDE] LED PWB PATTERN REGULATOR PWB PATTERN [PARTS SIDE] CONTROL PWB PATTERN (No.YA232)2-33 2-34(No.YA232)

  • Page 37: 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 38: Using P.w. Board & Remote Control Unit

     VE-30027426 SPEAKER 8R 15W F/R 57x126MM W/O M.SHIELD(x2) VE-35009244 FOOT BOTTOM PLATE LCD 3007/08 VE-20185740 REAR COVER 3007/08(WO/CI)(SILV-142G/P)V.0  VE-40021473 JVC MARK JVC(W/P-SILVER-HST)(11.90mm)GRY1434 VE-20185783 BUTTON FUNCTION VE-20185785 AV JACK BRACKET VE-20181362 AV BRACKET VE-20181842 POWER LED BRACKET VE-20185784 KNOB...

  • Page 39: Exploded View

    EXPLODED VIEW FRONT (No.YA232)3-3...

  • Page 40: Printed Wiring Board Parts List

    PRINTED WIRING BOARD PARTS LIST [LT-30E45SJ, LT-30E45SU, LT-30E45SU Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local Q703 VE-30001457 TRANSISTOR SMD Q704 VE-30001457 TRANSISTOR SMD VE-30021628 IC Q705 VE-30001458 TRANSISTOR SMD VE-30021628 IC Q750 VE-30001458 TRANSISTOR SMD VE-30021083 TDA9886T/SO24/REEL13//V4...
  • Page 41 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C112 VE-30012571 CAPACITOR SMD 39pF 50V J C194 VE-30012582 CAPACITOR SMD 10nF 50V K R C113 VE-30000371 E CAPACITOR 22uF 50V M C195 VE-30000345 E CAPACITOR 10uF 50V M C114 VE-30000345 E CAPACITOR...
  • Page 42 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C293 VE-30012589 CAPACITOR SMD 4.7nF 50V K C462 VE-30012570 CAPACITOR SMD 330pF 50V J C294 VE-30012581 CAPACITOR SMD 1nF 50V K R C463 VE-30000345 E CAPACITOR 10uF 50V M C295 VE-30012607 CAPACITOR SMD...
  • Page 43 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C669 VE-30000294 CAPACITOR SMD 100nF 50V K VE-30000460 RESISTOR CF 1/4W 100R G C670 VE-30000294 CAPACITOR SMD 100nF 50V K VE-30000460 RESISTOR CF 1/4W 100R G C671 VE-30000294 CAPACITOR SMD 100nF 50V K...
  • Page 44 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R151 VE-30012641 RESISTOR SMD 1/16W 10K J R291 VE-30012713 RESISTOR SMD 1/16W 75R J R152 VE-30012713 RESISTOR SMD 1/16W 75R J R292 VE-30012713 RESISTOR SMD 1/16W 75R J R153 VE-30012657 RESISTOR SMD...
  • Page 45 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R535 VE-30012692 RESISTOR SMD 1/16W 4.7K J R753 VE-30012696 RESISTOR SMD 1/16W 47K J R536 VE-30012692 RESISTOR SMD 1/16W 4.7K J R754 VE-30012696 RESISTOR SMD 1/16W 47K J R537 VE-30012692 RESISTOR SMD...
  • Page 46 Ref No. Part No. Part Name Description Local L651 VE-30002170 FERRITE CORE 1A RAD (FTZ) L700 VE-30002170 FERRITE CORE 1A RAD (FTZ) L701 VE-30001971 FERRITE SMD 600R/100MHz 200mA L702 VE-30001971 FERRITE SMD 600R/100MHz 200mA L703 VE-30001971 FERRITE SMD 600R/100MHz 200mA L704 VE-30001971 FERRITE SMD 600R/100MHz 200mA...
  • Page 47 PRINTED WIRING BOARD PARTS LIST [LT-30E45SU Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local Q751 VE-30001458 TRANSISTOR SMD VE-30021628 IC VE-30001279 LED RED/GREEN VE-30021083 IC VE-30001279 LED RED/GREEN VE-30001518 IC D100 VE-30001285 DIODE SMD VE-30012411 DIODE SMD D101 VE-30011601 LED...
  • Page 48 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C120 VE-30000359 E CAPACITOR 1000uF 16V M C202 VE-30012581 CAPACITOR SMD 1nF 50V K R C121 VE-30012581 CAPACITOR SMD 1nF 50V K R C203 VE-30012581 CAPACITOR SMD 1nF 50V K R C121...
  • Page 49 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C301 VE-30016654 CAPACITOR SMD 100nF 16V K R C500 VE-30012603 CAPACITOR SMD 100nF 25V K R C302 VE-30012607 CAPACITOR SMD 150pF 50V J C501 VE-30012603 CAPACITOR SMD 100nF 25V K R C303...
  • Page 50 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local C677 VE-30016654 CAPACITOR SMD 100nF 16V K R R101 VE-30012713 RESISTOR SMD 1/16W 75R J C678 VE-30000353 E CAPACITOR 100uF 25V M R101 VE-30012986 RESISTOR SMD 1/16W 68R J C679 VE-30016654 CAPACITOR SMD...
  • Page 51 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R158 VE-30012651 RESISTOR SMD 1/16W 160K J R300 VE-30012713 RESISTOR SMD 1/16W 75R J R159 VE-30012669 RESISTOR SMD 1/16W 22K J R301 VE-30012510 RESISTOR SMD 1/16W 100R J R160 VE-30012713 RESISTOR SMD...
  • Page 52 Ref No. Part No. Part Name Description Local Ref No. Part No. Part Name Description Local R545 VE-30012677 RESISTOR SMD 1/16W 3.3K J R760 VE-30014128 RESISTOR SMD 1/16W 33R J R546 VE-30012677 RESISTOR SMD 1/16W 3.3K J R761 VE-30014128 RESISTOR SMD 1/16W 33R J R547 VE-30012677 RESISTOR SMD...
  • Page 53 Ref No. Part No. Part Name Description Local L719 VE-30024779 FERRITE SMD 50R/100MHz 3A L721 VE-30024779 FERRITE SMD 50R/100MHz 3A L722 VE-30024779 FERRITE SMD 50R/100MHz 3A L723 VE-30001999 FIXED COIL 40uH 4A RAD 8*10 L724 VE-30001999 FIXED COIL 40uH 4A RAD 8*10 L725 VE-30001999 FIXED COIL 40uH 4A RAD 8*10...

  • Page 54: Packing Parts List

    PACKING PACKING PARTS LIST  Ref.No. Part No. Part Name Description Local VE-20186614 CARTON BOX TOP, BOTTOM 1SET LT-30E45SJ VE-20185767 CARTON BOX TOP, BOTTOM 1SET LT-30E45SU,LT-30E45SU/Z VE-20186619 CARTON BOX TOP, BOTTOM 1SET LT-30E45SU/N VE-20152218 SNOW BOX ASSY 4pcs in 1set VE-35009248 SUPPORT BRACKET LT-30E45SU/N...

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