1. Manuals
  2. Brands
  3. JVC Manuals
  4. LCD TV
  5. LT-17E31 BUG
  6. Service manual

JVC LT-17E31 BUG Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
SERVICE MANUAL
LCD FLAT TELEVISION
LT-17E31 BUG/BJG
LT-17E31 SUG/SJG
LT-17E75 BJG
LT-17E75 SJG
1. PRECAUTIONS .......................................................................................................................................... 1-3
2. SPECIFIC SERVICE INSTRUCTIONS .......................................................................................................... 1-5
3. DISASSEMBLY ........................................................................................................................................... 1-6
4. ADJUSTMENT .......................................................................................................................................... 1-22
5. TROUBLE SHOOTING .............................................................................................................................. 1-23

TABLE OF CONTENTS

COPYRIGHT © 2004 Victor of Japan, Limited
No.YA031
2004/6

Advertisement

Table of Contents
loading

Related Manuals for JVC LT-17E31 BUG

Summary of Contents for JVC LT-17E31 BUG

  • Page 1: Table Of Contents

    SERVICE MANUAL LCD FLAT TELEVISION LT-17E31 BUG/BJG LT-17E31 SUG/SJG LT-17E75 BJG LT-17E75 SJG TABLE OF CONTENTS 1. PRECAUTIONS ............................1-3 2. SPECIFIC SERVICE INSTRUCTIONS ......................1-5 3. DISASSEMBLY ............................1-6 4. ADJUSTMENT ............................1-22 5. TROUBLE SHOOTING ..........................1-23 COPYRIGHT © 2004 Victor of Japan, Limited No.YA031...
  • Page 2 SPECIFICATION Contents Items LT-17E31 BUG LT-17E31 BJG LT-17E75 BJG LT-17E31 SUG LT-17E31 SJG LT-17E75 SJG Dimentions (W x H x D) 46.5cm x 32.5cm x 7.8cm (TV only) 46.5cm x 36.3cm x 19.0cm Mass 6.1kg (TV only) 7.3kg TV RF System...
  • Page 3 SECTION 1 PRECAUTION 1.1 SAFETY PRECAUTIONS (8) When service is required, observe the original lead dress. (1) The design of this product contains special hardware, Extra precaution should be given to assure correct lead many circuits and components specially for safety dress in the high voltage circuit area.

  • Page 4: 1.3 Precautions

    1.2 INSTALLATION 1.2.1 HEAT DISSIPATION If the heat dissipation vent behind this unit is blocked, cooling efficiency may deteriorate and temperature inside the unit will rise. Therefore, please make sure pay attention not to block the heat dissipation vent as well as the ventilation outlet behind the unit and ensure that there is room for ventilation around it.

  • Page 5: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2.1 DESCRIPTION ABOUT LIQUID CRYSTAL PANEL 2.2.1 STRUCTURE OF LIGUID CRYSTAL PANEL The Liquid Crystal Panel of this model is TFT Panel. The Print circuit board that consist of TFT array and the print circuit board adopted stripe shaped image element alignment are used.

  • Page 6: Disassembly

    SECTION 3 DISASSEMBLY 3.1 DISASSEMBLY PROCEDURE CAUTION: • Disconnect the set and attached devices from the electrical outlet • To avoid ESD (Electro-Static Discharge), ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the set. 3.1.1 REMOVING THE CABLE COVER AND NECK COVER (1) Remove the CABLE COVER (L) by pulling the snap tabs.
  • Page 7 3.1.2 REMOVING THE DUMMY COVERS (If necessary) (1) Remove the DUMMY COVERS of TUNER module and AV JACK module by pulling the snap tabs Snap tab DUMMY COVER Snap tab DUMMY COVER TUNER COVER TUNER module AV JACK module (No. YA031) 1-7...
  • Page 8 3.1.3 PREPARING TO REMOVE THE MODULE UNITS (1) Remove the TUNER module cover by pulling snap tab. (2) Loosen 2 screws [A] of AV JACK module. 3.1.4 REMOVING THE BASE AND THE HANDLE (1) Remove 4 screws [B] and remove the BASE by pulling BASE. (2) Remove 4 screws [C] and remove the HANDLE.
  • Page 9 3.1.5 REMOVING THE MODULE UNITS (1) Remove the TUNER module by pulling carefully. (2) Remove the AV JACK module by pulling carefully. 3.1.6 REMOVING THE REAR COVER (1) Remove 4 screws [D] and remove the REAR COVER. NOTE: For the REAR COVER is attached tightly, it is easy to open from the corner of the REAR COVER. REAR COVER TUNER module AV JACK module...
  • Page 10 3.1.7 REMOVING THE D-SUB COVER AND THE AUDIO COVER (1) Remove a screw [E] and remove the D-SUB COVER. (2) Remove a screw [F] and remove the AUDIO COVER. 3.1.8 REMOVING THE MODULE BRACKETS (1) Remove the 2 screws [G] and remove the MODULE BRACKETS. MODULE BRACKETS AUDIO COVER D-SUB COVER...
  • Page 11 3.1.9 REMOVING THE MAIN BOARD SHIELD (1) Remove 4 screws [H] and remove the 2 nuts [I]. (2) Remove the tape fixing wires. (3) Remove the MAIN BOARD SHIELD by sliding to downside and lifting. Release the earth wires Holes for slide Tape (No.
  • Page 12 3.1.10 DISCONNECTING THE WIRING CONNECTORS (1) Disconnect the wiring connectors from P002 and P003 on MAIN PWB. NOTES: Confirm the wiring layout of harnesses. • The AUDIO wires are fixed by hot bond between P002 and P003, after connected. • The RIGHT SPEAKER wires are turn around into the gap as shown Fig.A.
  • Page 13 3.1.11 REMOVING THE LCD MODULE ASS’Y (1) Remove 3 screws [J]. (2) Remove the LCD MODULE ASS’Y by release from the 6 latches. Latches (Top) x4 Latch (Right) Latch (Left) Label (No. YA031) 1-13...
  • Page 14 3.1.12 REMOVING THE SPEAKERS (1) Disconnect the wires from the P603 on FRONT CONTROL PWB. (2) Strip off the sponges and lift the SPEAKERS. P603 Sponges SPEAKERS Wires under sponges 1-14 (No. YA031)
  • Page 15 3.1.13 REMOVING THE FRONT CONTROL PWB AND IR SENSOR PWB (1) Remove 2 screws [K] and remove the FRONT CONTROL PWB. (2) Remove a screw [L] and remove the IR SENSOR PWB. (3) Remove 3 screws [M] and remove the KEY assembly. FRONT CONTROL PWB wires (6P) IR SENSOR PWB...
  • Page 16 3.1.14 SUPPLEMENTAL 1 • The below assemblies are welded process. • If removing these components, it is necessary to replace them. VESA BRACKET Welded REAR COVER LED WINDOW Welded IR LENS Welded KEY COVER FRONT COVER LOGO Welded 1-16 (No. YA031)
  • Page 17 3.1.15 SUPPLEMENTAL 2 • SPEAKER assembly. • Confirm to connect the positive wire to the terminal with RED marker. High density rubber Black ( - ) Black ( - ) White (+) Red (+) Cushion rubber SPEAKER SPEAKER wires RED marker (No.
  • Page 18 3.1.16 SUPPLEMENTAL 3 • BASE assembly. BASE BRACKET Rubber foot BASE • HINGE assembly. HINGE COVER HINGE Latchs Hot bond Insert until locking 1-18 (No. YA031)
  • Page 19 (No. YA031) 1-19...
  • Page 20 3.2 REPLACEMENT OF MEMORY IC 3.2.1 PROCEDURE FOR REPLACING OF MEMORY IC Memory IC Notice MCU IC Notice 1-20 (No. YA031)
  • Page 21 3.3 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 22: Adjustment

    SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. 1-22 (No. YA031)

  • Page 23: Troubleshooting

    SECTION 5 TROUBLESHOOTING No picture Appear Does the LED The Voltage of Replace F001 light up L100;L083 is 12V LED display is Next amber The Voltage of Replace L100 I041 #6 is 12V & L083 Reset the MCU(I004) Picture by pushing the power shows Is it entering into key or replugging the...
  • Page 24 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No. YA031) Printed in Japan...
  • Page 47 NAME mber...
  • Page 81 NAME mber...
  • Page 92 SCHEMATIC DIAGRAMS LCD FLAT TELEVISION LT-17E31 BUG/BJG LT-17E31 SUG/SJG LT-17E75 BJG LT-17E75 SJG CD-ROM No. SML200406 COPYRIGHT © 2004 Victor of Japan, Limited No.YA031 2004/6...
  • Page 93 LT-17E31BUG, LT-17E31BJG, LT-17E75BJG LT-17E31SUG, LT-17E31SJG, LT-17E75SJG STANDARD CIRCUIT DIAGRAMS CONTENTS USING P.W. BOARD ..................................2-1 SEMICONDUCTOR ..................................2-1 BLOCK DIAGRAM ..................................2-2 CIRCUIT DIAGRAMS ................................... 2-3 MAIN PWB CIRCUIT DIAGRAM ................................2-3 IR SENSOR PWB CIRCUIT DIAGRAM .............................. 2-25 AV JACK PWB CIRCUIT DIAGRAM ..............................2-27 FRONT CONTROL PWB CIRCUIT DIAGRAM ...........................

  • Page 94: Block Diagram

    BLOCK DIAGRAM P603 P005 P008 P007 P002 P003 PT17 P001 No. YA031...

  • Page 95: Circuit Diagrams

    CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM (1/11) DC IN (12V) 17" (NC) MAIN PWB ASS'Y (1/11) Power save Sheet 2,6,9,10 No. YA031 No. YA031...
  • Page 96 MAIN PWB CIRCUIT DIAGRAM (2/11) Sheet 3 Sheet 5,7 Sheet 8 Sheet 8 Sheet 10,11 Sheet 4 Sheet 7 Sheet 1,6,9,10 Sheet 8 Sheet 8 Sheet 5 FRONT CONTROL PWB P602 Sheet 3,4,5,6,7,10 MAIN PWB ASS'Y (2/11) IR SENSOR PWB P601 No.
  • Page 97 MAIN PWB CIRCUIT DIAGRAM (3/11) A/D CONVERTER Sheet 8 Sheet 8 Sheet 2 Sheet 8 MAIN PWB ASS'Y (3/11) No. YA031 No. YA031...
  • Page 98 MAIN PWB CIRCUIT DIAGRAM (4/11) Sheet 10 Sheet 6 Sheet 6 Sheet 6 Sheet 6 Sheet 10 Sheet 6 Sheet 6 Sheet 6 Sheet 6 AV JACK PWB Sheet 6 P001 Sheet 6 Sheet 6 Sheet 2 Sheet 6 MAIN PWB ASS'Y (4/11) TUNER PWB PT17 No.
  • Page 99 MAIN PWB CIRCUIT DIAGRAM (5/11) Sheet 2,3,4,6,7,10 Sheet 2 Sheet 4 Sheet 6 Sheet 6 Sheet 6 TELE TEXT Sheet 6 MAIN PWB ASS'Y (5/11) No. YA031 2-11 2-12 No. YA031...
  • Page 100 MAIN PWB CIRCUIT DIAGRAM (6/11) Sheet 2,3,4,5,7,10 Sheet 4 Sheet 2 Sheet 5 Sheet 1,2,9,10 Sheet 4 Sheet 7,8 VIDEO DECODER COMB FILTER Sheet 7,8 Sheet 5 MAINPWB ASS'Y (6/11) No. YA031 2-13 2-14 No. YA031...
  • Page 101 MAIN PWB CIRCUIT DIAGRAM (7/11) Sheet 8 DE-INTERLACE Sheet 6,8 Sheet 2,3,4,5,6,10 Sheet 8 MAIN PWB ASS'Y (7/11) No. YA031 2-15 2-16 No. YA031...
  • Page 102 MAIN PWB CIRCUIT DIAGRAM (8/11) Sheet 9 Sheet 9 Sheet 9 Sheet 6,7 Sheet 2 Sheet 7 SCALER Sheet 3 Sheet 2 Sheet 3 Sheet 3 Sheet 2 Sheet 7 Sheet 3 MAIN Sheet 7 Sheet 7 Sheet 3 Sheet 6,7 Sheet 9 Sheet 3 Sheet 2...
  • Page 103 MAIN PWB CIRCUIT DIAGRAM (9/11) Sheet 8 Sheet 8 Sheet 8 PANEL Sheet 8 LVDS DECODER MAIN PWB ASS'Y (9/11) No. YA031 2-19 2-20 No. YA031...
  • Page 104 MAIN PWB CIRCUIT DIAGRAM (10/11) Sheet 2,11 Sheet 1,2,6,9 Sheet 4 Sheet 4 Sheet 4 Sheet 11 Sheet 2,3,4,5,6,7 Sheet 4 MAIN PWB ASS'Y (10/11) No. YA031 2-21 2-22 No. YA031...
  • Page 105 MAIN PWB CIRCUIT DIAGRAM (11/11) Sheet 10 FRONT CONTROL PWB P604 Sheet 2,10 AUDIO AMP MAIN PWB ASS'Y (11/11) No. YA031 2-23 2-24 No. YA031...

  • Page 106: Ir Sensor Pwb Circuit Diagram

    IR SENSOR PWB CIRCUIT DIAGRAM MAIN PWB (2/11) P003 IR SENSOR PWB ASS'Y No. YA031 2-25 2-26 No. YA031...

  • Page 107: Av Jack Pwb Circuit Diagram

    AV JACK PWB CIRCUIT DIAGRAM MAIN PWB (4/11) P006 AV JACK PWB ASS'Y No. YA031 2-27 2-28 No. YA031...

  • Page 108: Front Control Pwb Circuit Diagram

    FRONT CONTROL PWB CIRCUIT DIAGRAM SPEAKERS MAIN PWB (11/11) P005 MAIN PWB (2/11) P002 FRONT CONTROL PWB ASS'Y No. YA031 2-29 2-30 No. YA031...

  • Page 109: Tuner Pwb Circuit Diagram

    TUNER PWB CIRCUIT DIAGRAM MAIN PWB (4/11) P012 TUNER PWB ASS'Y No. YA031 2-31 2-32 No. YA031...

  • Page 110: Pattern Diagrams

    PATTERN DIAGRAMS MAIN PWB PATTERN No. YA031 2-33 2-34 No. YA031...

  • Page 111: Ir Seneor Pwb Pattern

    IR SENSOR PWB PATTERN AV JACK PWB PATTERN FRONT CONTROL PWB PATTERN TUNER PWB PATTERN No. YA031 2-35...
  • Page 112 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY VIDEO DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No. YA031) Printed in Japan...

  • Page 113: 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 thesafety. The parts not indicated in this Parts List and those which are filled with lines in the Parts No.

  • Page 114: Exploded View Parts List

    CABLE HOLDER DA-5641414700 HINGE COVER DA-5642679700 MODULE COVER (DUMMY) DA-5646255600 AV JACK SHIELD DA-5642679400 AV JACK COVER DA-5051253644 LCD PANEL DA-5642425600 JVC BADGE DA-5000100091 INVERTER P.W.B DA-5055125200 SPEAKER DA-7190562305 SCREW (M3x5) DA-7000311032 SCREW (M3x6) DA-7136160252 SCREW (M3x4) DA-7134161182 SCREW (M3x8)

  • Page 115: Exploded View

    EXPLODED VIEW (No. YA031) 3-3...

  • Page 116: Printed Wiring Board Parts List

    PRINTED WIRING BOARD PARTS LIST PWB ASSEMBLIES LIST Symbol Part No. Part Name Description Symbol Part No. Part Name Description MAIN PWB ASS'Y DA-5097627803 D018 DA-6613000555 SWITCHING BAV99-7 IR SENSOR PWB ASS'Y DA-5097627803 D019 DA-6613000555 SWITCHING BAV99-7 AV JACK PWB ASS'Y DA-5098800654 D023 DA-6613003059 SWITCHING...
  • Page 117 Symbol Part No. Part Name Description Symbol Part No. Part Name Description L077 DA-5062133008 FERRITE BEAD C013 DA-5240610191 C CAP. 100pF 50V L078 DA-5062133008 FERRITE BEAD C014 DA-5240610191 C CAP. 100pF 50V L079 DA-5062133008 FERRITE BEAD C015 DA-5240610191 C CAP. 100pF 50V L081 DA-5062133003...
  • Page 118 Symbol Part No. Part Name Description Symbol Part No. Part Name Description C205 DA-5218007891 E CAP. 10µF C389 DA-5230005491 C CAP. 0.1µF C207 DA-5230005491 C CAP. 0.1µF C390 DA-5230005491 C CAP. 0.1µF C218 DA-5230005491 C CAP. 0.1µF C391 DA-5230005491 C CAP. 0.1µF C219 DA-5218007891...
  • Page 119 Symbol Part No. Part Name Description Symbol Part No. Part Name Description C483 DA-5230610391 C CAP. 0.01µF 50V R010 DA-5134310309 MG RES. 10KΩ 1/16W C492 DA-5230610291 C CAP. 1000pF 50V R011 DA-5134300009 MG RES. 0Ω 1/16W C493 DA-5230610291 C CAP. 1000pF 50V R012 DA-5134320209...
  • Page 120 Symbol Part No. Part Name Description Symbol Part No. Part Name Description R119 DA-5134300009 MG RES. 0Ω 1/16W R267 DA-5134324209 MG RES. 2.4KΩ 1/16W R120 DA-5134300009 MG RES. 0Ω 1/16W R268 DA-5134324209 MG RES. 2.4KΩ 1/16W R121 DA-5134300009 MG RES. 0Ω...

  • Page 121: Ir Sensor Pwb Assembly

    Symbol Part No. Part Name Description Symbol Part No. Part Name Description R401 DA-5134300009 MG RES. 0Ω 1/16W X007 DA-6699114106 XTAL 12MHz R402 DA-5134300009 MG RES. 0Ω 1/16W R403 DA-5134300009 MG RES. 0Ω 1/16W F001 DA-5054470091 FUSE 125V/7A R404 DA-5134300009 MG RES.

  • Page 122: Front Control Pwb Assembly

    TUNER PWB ASSEMBLY Symbol Part No. Part Name Description Symbol Part No. Part Name Description L006 DA-5134300009 MG RES. 0Ω 1/16W L007 DA-5134300009 MG RES. 0Ω 1/16W UNIT L008 DA-5134300009 MG RES. 0Ω 1/16W L009 DA-5134300009 MG RES. 0Ω 1/16W UT01 DA-5000100054 T U N E R...

  • Page 123: Packing

    PACKING 9 10 PACKING PARTS LIST R e f . N o . P a r t N o . P a r t N a m e D e s c r i p t i o n DA-9513384156 CARTON BOX DA-9533380156 EPE PAD-L...

This manual is also suitable for:

Lt-17e31 bjgLt-17e31 sugLt-17e75 bjg

Table of Contents