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Manual de instrucciones LG Electronics 19LS3500/350S/350T-ZA

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  • LG Electronics 19LS3500/350S/350T-ZA - page 1

    Printed in Korea P/NO : MFL67360701 (1202-REV00) CHASSIS : LD21A MODEL : 19LS3500/350S/350T MODEL : 19LS3500/350S/350T -ZA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. LED LCD TV SER VICE MANUAL North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice. ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 2

    - 2 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ........................................................................ 3 SERVICING PRECAUTIO ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 3

    - 3 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Exploded View . It is essential that these special safety parts should ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 4

    - 4 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes SER VICING PRECAUTIONS CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE : If unforeseen circumstances ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 5

    - 5 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes IC Remove/Replacement Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent at against the cir- cuit foil. When holes are the slotted type, the following technique shoul ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 6

    - 6 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes SPECIFICA TION NOTE : Specifications and others are subject to change without notice for improvement . 1. Application range This specification is applied to the LCD TV used LD21A chassis. 2. Requirement for T est Each part is te ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 7

    - 7 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Item Specication Remarks 2 Broadcasting system 1) P AL-BG 2) P AL-DK 3) P AL-I/I’ 4) SECAM L/L ’ 5) DVB-T/T2/C/S 3 Receiving system Analog : Upper Heterodyne Digital : COFDM, QAM ► DVB-T - Guard Interval(Bitrate_Mbi ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 8

    - 8 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5. V ideo resolutions (2D) 5.1. Component Input (Y , C B /P B , C R /P R ) 5.2. RGB Input (PC) – LS35/LS34/CS46 series models are not supported. No. Resolution H-freq(kHz) V -freq(Hz) Pixel clock(MHz) Proposed 1 720*576 15.625 ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 9

    - 9 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 5.3. HDMI Input(PC/DTV) No. Resolution H-freq(kHz) V -freq.(Hz) Pixel clock(MHz) Proposed Remark PC(DVI) DDC 1 640*350 31.468 70.09 25.17 EGA X 2 720*400 31.469 70.08 28.32 DOS O 3 640*480 31.469 59.94 25.17 VESA(VGA) O 4 800*60 ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 10

    - 10 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes ADJUSTMENT INSTRUCTION 1. Application Range This specification sheet is applied to all of the LCD TV with LD21A chassis. 2. Designation (1) The adjustment is according to the order which is designated and which must be followed ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 11

    - 1 1 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.1. ADC Process (1) ADC - Enter Service Mode by pushing "ADJ" key , - Enter Internal ADC mode by pushing "►" key at "7. ADC Calibration". <Caution> Us i ng " po w er o n" k e y ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 12

    - 12 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 3.4 Function Check - Check display and sound ■ Check Input and Signal items. 1) TV 2) A V (SCART / CVBS) 3) COMPONENT (480i) 4) RGB (PC : 1024 x 768 @ 60hz) (* RGB input : LD21B only support) 5) HDMI 6) PC Audio In (* except ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 13

    - 13 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes * Manual W/B process using adjust Remote control. ▪ After enter Service Mode by pushing "ADJ" key , ▪ Enter White Balance by pushing " ► " key at "8. White Balance". * After you finished all ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 14

    - 14 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 6.3. Method & notice (1) Serial number D/L is using of scan equipment. ( 2) Setting of scan equipment operated by Manufacturing T echnology Group. (3) Serial number D/L must be conformed when it is produced in production li ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 15

    - 15 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes 7.2 LAN Inspection 7.2.1. Equipment & Condition ▪ Each other connection to LAN Port of IP Hub and Jig 7.2.1. LAN inspection solution ▪ LAN Port connection with PCB ▪ Network setting at MENU Mode of TV ▪ Setting auto ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 16

    - 16 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes [Caution] Please unlock latches from Bottom Side, for separating Back Cover from CABINET [Method] Firstly , Grab left side of Speaker V ent Hole( ① ) and then unlock left side latches( ② ) slowly . Secondly , Grab center( ? ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 17

    - 17 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Component/AV COMMON HDMI1/2(DVI) IF +/ - TU_CVBS SIF USB1(2.0) DP/DM X- tal 24 M X201 CVBS, Y/ Pb /Pr, L/R R e a r TMDS S i d e FULL SCAR T SC1_CVBS _IN SC1_R/G/B FE_ VOU T ATV : SI2176 SERIAL FLASH IC1401 (8Mbit) MX25L800 6EM2 ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 18

    - 18 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes A2 A21 A5 A31 A10 * Set + Stand 900 200 400 540 521 820 910 120 300 510 310 L V1 410 EXPLODED VIEW Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 19

    Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page Remarks 1 A. Video error No video/Normal audio 1 2 No video/No audio 2 3 Tuning fail, Picture broken/ Freezing 3, 4 4 Color error 5 5 Vertical/Horizontal bar, residual image, light spot, external device color error 6 6 B. Power error No po ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 20

    Contents of LCD TV Standard Repair Process Detail Technical Manual No. Error symptom Content Page Remark s 1 A. Video error_ No video/Normal audio Check LCD back light with naked eye A1 2 LED driver B+ 24V me asuring method A2 3 Check White Balance value A3 4 Power Board voltage measuring method A4 6 A. Video error_ No video/Video lag/stop TUNER in ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 21

    Normal audio Y N Move to No video/No audio No video Normal audio Check Back Light On with naked ey e On Y N Check Power Board 12v,3.5v etc. Normal voltage Y N Replace T-con Board or module Repair Power Board or parts Check Power Board 24v output Normal voltage Y Replace Inverter or module N Repair Power Board or parts End Always check & record ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 22

    Normal voltage? Check various voltages of Power Board ( 3.5V,12V,20V or 24V…) No Video/ No audio Check and replace MAIN B/D Y Replace Power Board and repair parts N End Standard Repair Process A. Video error No video/ No audio ☞ A4 Establis hed date Revised date 2/14 LCD TV Error symptom 2012 . 01 .14 Copyright © 2012 LG Electronics. Inc. All ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 23

    A. Video error Picture bro k en/ Freezing Y N ☞ A5 N Check R F Signal le vel Normal Signal? Check RF Cable Connection 1. Reconnec tion 2. Install Bo oste r Check S/W Version S/W Upgrade Check w hether other e quipments have probl e m or not. (By connecting RF Cabl e at other equipment) → DVD Play er ,S et-Top-Box, Different maker TV etc` SVC Bu ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 24

    A. Video error Tuning fail, Pictur e broken/ Freezing Y N ☞ A5 Check R F Signal le vel Normal Signal? Check S/W Version S/W Upgrade SVC Bulletin? Normal Picture? Y N Y Close Check RF signal cable (DVB satellite signal or not) Check whether other eq uipments have problem or not. (By connecting RF Cable at other equipment) → Set-Top-Box, Differen ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 25

    Color error? Y N ※ Check and replace Link Cable (LVDS) and contact condition Y N Replace Main B/D Color error? Check error color input mode Check color by input -External Input -COMPONENT - RGB - HDMI/DVI Y External device /Cable normal External Input/ Component error Check external device and cable Y External device /Cable normal RGB/ HDMI/DVI e ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 26

    Screen normal? N Y Check external device connection condition Y N Check and replace Link Cable Normal? Y Screen normal? Replace module Check color condi tion by input -External Input -Component - RGB - HDMI/DVI End Vertical/Horizontal bar, r esidual image, light spot Request repair for external device A. Video error Vertica l / Horizontal bar, resi ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 27

    B. Power error No power Power LED On? Y N DC Power on by pressing Power Key On Remote control Y N Normal operation? Check Power On ‘”High” Check Power cord was inserted properly Check Power LED Replace Power B/D Measure voltage of each o u tpu t of Power B/D N Y Normal voltage? Replace Main B/D N Y OK? Replace Main B/D N Y Normal? Check ST-BY ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 28

    B. Power error Off when on, off w hile vi ewing, power auto on/off Error? N Y Check Power Off Mode Fix A/C cord & Outlet and check each 3 phase out Check A/C cord Check for all 3- phase power out Check outlet Replace Main B/D CPU Abnormal (If Power Off mode is not display ed) Check Power B/D vol t ag e Y N Replace Main B/D Normal voltage? Repla ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 29

    No audio Screen normal Check user menu > Speaker off Off N Y Cancel OFF Check audio B+ 24V of Power Board Normal vol t ag e Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C. Audio error No audio/ Normal v id eo ☞ A15 ☞ A16 Disconnection Establis hed date Revis e d date 9/14 LCD ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 30

    → abnormal audio/di sconti nuation/n oise is same af ter “Check input signal” compared to No audio C. Audio error Wrecked audi o/ disco ntinu ation /noise Wrecked audio/ Discontinuation/ Noise for all audio Check and replace speaker and connector Wrecked audio/ Discontinuation/ Noise only for D-TV Wrecked audio/ Discontinuation/ Noise only fo ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 31

    D. Function error Remote co ntrol & Local sw itch checking Y N 1. Remote control(R/C) op erating error Check R/C itself Operation Norm al operating? Normal operating? Y Close Replace R/ C If R/C operate, Explain th e customer cause is inter ference from light in room. Check R/C Operat ing When turn off light in room Check & Replace Baterry ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 32

    Check technical informatio n - Fix information - S/W Version N Y Technical information? Check input signal Signal input? Y N External Input and Component Recognition error Check and fix externa l devic e/cable RGB,HDMI/ DVI, Optical Recognition error Replace Main B/D Replace Main B/D Fix in accordance with technical information D. Function error Ex ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 33

    Check location of noise Identify nose type Circuit noise Replace PSU (with LED drive r) Replac e L E D driv er Mechanic al noise Check location of noise OR ※ When the nose is severe, rep lace the module (For mode ls with fix infor mation, upgrade the S/W or provide th e d es cript ion) ※ If there is a “Tak Tak ” noise from the cabinet, refe ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 34

    Replace module Zoom par t with exter ior damage Module damage Cabinet damage Replace cabinet Replace remot e controller Remote controller damage Stand dent Replace stand F. Exterior defect Exterior defect Establis hed date Revis e d date 14/14 LCD TV Error symptom Standard Repair Process 2012. 01 .14 Copyright © 2012 LG Electronics. Inc. All right ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 35

    ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 36

    Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid category) Page Remarks 1 A. Video error No video/Normal audio 1 2 No video/No audio 2 3 Tuning fail, Picture broken/ Freezing 3, 4 4 Color error 5 5 Vertical/Horizontal bar, residual image, light spot, external device color error 6 6 B. Power error No po ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 37

    Contents of LCD TV Standard Repair Process Detail Technical Manual No. Error symptom Content Page Remark s 1 A. Video error_ No video/Normal audio Check LCD back light with naked eye A1 2 LED driver B+ 24V me asuring method A2 3 Check White Balance value A3 4 Power Board voltage measuring method A4 6 A. Video error_ No video/Video lag/stop TUNER in ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 38

    Normal audio Y N Move to No video/No audio No video Normal audio Check Back Light On with naked ey e On Y N Check Power Board 12v,3.5v etc. Normal voltage Y N Replace T-con Board or module Repair Power Board or parts Check Power Board 24v output Normal voltage Y Replace Inverter or module N Repair Power Board or parts End Always check & record ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 39

    Normal voltage? Check various voltages of Power Board ( 3.5V,12V,20V or 24V…) No Video/ No audio Check and replace MAIN B/D Y Replace Power Board and repair parts N End Standard Repair Process A. Video error No video/ No audio ☞ A4 Establis hed date Revised date 2/14 LCD TV Error symptom 2012 . 01 .14 Copyright © 2012 LG Electronics. Inc. All ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 40

    A. Video error Picture bro k en/ Freezing Y N ☞ A5 N Check R F Signal le vel Normal Signal? Check RF Cable Connection 1. Reconnec tion 2. Install Bo oste r Check S/W Version S/W Upgrade Check w hether other e quipments have probl e m or not. (By connecting RF Cabl e at other equipment) → DVD Play er ,S et-Top-Box, Different maker TV etc` SVC Bu ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 41

    A. Video error Tuning fail, Pictur e broken/ Freezing Y N ☞ A5 Check R F Signal le vel Normal Signal? Check S/W Version S/W Upgrade SVC Bulletin? Normal Picture? Y N Y Close Check RF signal cable (DVB satellite signal or not) Check whether other eq uipments have problem or not. (By connecting RF Cable at other equipment) → Set-Top-Box, Differen ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 42

    Color error? Y N ※ Check and replace Link Cable (LVDS) and contact condition Y N Replace Main B/D Color error? Check error color input mode Check color by input -External Input -COMPONENT - RGB - HDMI/DVI Y External device /Cable normal External Input/ Component error Check external device and cable Y External device /Cable normal RGB/ HDMI/DVI e ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 43

    Screen normal? N Y Check external device connection condition Y N Check and replace Link Cable Normal? Y Screen normal? Replace module Check color condi tion by input -External Input -Component - RGB - HDMI/DVI End Vertical/Horizontal bar, r esidual image, light spot Request repair for external device A. Video error Vertica l / Horizontal bar, resi ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 44

    B. Power error No power Power LED On? Y N DC Power on by pressing Power Key On Remote control Y N Normal operation? Check Power On ‘”High” Check Power cord was inserted properly Check Power LED Replace Power B/D Measure voltage of each o u tpu t of Power B/D N Y Normal voltage? Replace Main B/D N Y OK? Replace Main B/D N Y Normal? Check ST-BY ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 45

    B. Power error Off when on, off w hile vi ewing, power auto on/off Error? N Y Check Power Off Mode Fix A/C cord & Outlet and check each 3 phase out Check A/C cord Check for all 3- phase power out Check outlet Replace Main B/D CPU Abnormal (If Power Off mode is not display ed) Check Power B/D vol t ag e Y N Replace Main B/D Normal voltage? Repla ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 46

    No audio Screen normal Check user menu > Speaker off Off N Y Cancel OFF Check audio B+ 24V of Power Board Normal vol t ag e Y N Replace Power Board and repair parts Check Speaker disconnection N Y Replace Speaker Replace MAIN Board End C. Audio error No audio/ Normal v id eo ☞ A15 ☞ A16 Disconnection Establis hed date Revis e d date 9/14 LCD ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 47

    → abnormal audio/di sconti nuation/n oise is same af ter “Check input signal” compared to No audio C. Audio error Wrecked audi o/ disco ntinu ation /noise Wrecked audio/ Discontinuation/ Noise for all audio Check and replace speaker and connector Wrecked audio/ Discontinuation/ Noise only for D-TV Wrecked audio/ Discontinuation/ Noise only fo ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 48

    D. Function error Remote co ntrol & Local sw itch checking Y N 1. Remote control(R/C) op erating error Check R/C itself Operation Norm al operating? Normal operating? Y Close Replace R/ C If R/C operate, Explain th e customer cause is inter ference from light in room. Check R/C Operat ing When turn off light in room Check & Replace Baterry ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 49

    Check technical informatio n - Fix information - S/W Version N Y Technical information? Check input signal Signal input? Y N External Input and Component Recognition error Check and fix externa l devic e/cable RGB,HDMI/ DVI, Optical Recognition error Replace Main B/D Replace Main B/D Fix in accordance with technical information D. Function error Ex ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 50

    Check location of noise Identify nose type Circuit noise Replace PSU (with LED drive r) Replac e L E D driv er Mechanic al noise Check location of noise OR ※ When the nose is severe, rep lace the module (For mode ls with fix infor mation, upgrade the S/W or provide th e d es cript ion) ※ If there is a “Tak Tak ” noise from the cabinet, refe ...

  • LG Electronics 19LS3500/350S/350T-ZA - page 51

    Replace module Zoom par t with exter ior damage Module damage Cabinet damage Replace cabinet Replace remot e controller Remote controller damage Stand dent Replace stand F. Exterior defect Exterior defect Establis hed date Revis e d date 14/14 LCD TV Error symptom Standard Repair Process 2012. 01 .14 Copyright © 2012 LG Electronics. Inc. All right ...

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El manual de instrucciones, también determinado como el manual de usuario o simplemente instrucciones, es un documento técnico que tiene como objetivo ayudar a los usuarios a utilizar LG Electronics 19LS3500/350S/350T-ZA. Las instrucciones normalmente las realiza un escritor técnico pero en un lenguaje comprensible para todos los usuarios de LG Electronics 19LS3500/350S/350T-ZA.

El manual de instrucciones completo de LG Electronics debe contener unos elementos básicos. Una parte de ellos es menos importante, como por ejemplo: la portada / la página principal o las páginas de autor. Sin embargo, lo demás debe facilitarnos la información más importante desde el punto de vista del usuario.

1. Introducción y pistas sobre cómo orientarse con el manual LG Electronics 19LS3500/350S/350T-ZA - Al principio de cada manual se deben encontrar las indicaciones acerca de la manera de usar un manual de instrucciones. Debe contener información sobre dónde encontrar el índice LG Electronics 19LS3500/350S/350T-ZA, preguntas frecuentes o problemas más comunes – son los apartados más buscados por los usuarios de cada manual de instrucciones.
2. Índice - listados de todos los consejos acerca de LG Electronics 19LS3500/350S/350T-ZA que encontraremos en el documento
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4. Troubleshooting - una secuencia sistematizada de acciones que nos ayudará a diagnosticar los problemas más importantes con LG Electronics 19LS3500/350S/350T-ZA
5. FAQ - las preguntas frecuentes
6. Datos de contacto Información acerca de cómo encontrar los datos de contacto del fabricante / servicio de LG Electronics 19LS3500/350S/350T-ZA en cada país si no somos capaces de solucionar el problema por nuestra cuenta.

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