Manuale d’uso / di manutenzione del prodotto 340T del fabbricante LG Electronics
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Printed in Korea P/NO : MFL67360710 (1203-REV00) CHASSIS : LD21C MODEL: 32LS3400/340S/340T/3450 MODEL: 32LS3400/340S/340T/3450-ZC CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. LED LCD TV SER VICE MANUAL North/Latin America http://aic.
- 2 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS .
- 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 .
- 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.
- 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.
- 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 LD21C chassis.
- 7 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes No. Item Specication Remarks 2 Broadcasting system 1) P AL-BG 2) P AL-DK 3).
- 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.
- 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.
- 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 LD21C chassis.
- 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.
- 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.
- 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.
- 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.
- 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.
- 16 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Ethernet RGB PC SPDIF Component1 HDMI1/2(DVI) PC/DVI Audi I IF +/ - TU_CVBS S.
- 17 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Ethernet RGB PC SPDIF Component1 HDMI1/2(DVI) TDSN TDSN - - G301D G301D (LGIT.
- 18 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes Ethernet RGB P SPDIF Component1 HDMI1/2(DVI) TDSQ TDSQ - - G001D G001D (LGIT).
- 19 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved. Only for training and service purposes L V1 300 200 800 540 521 530 820 550 810 120 510 310 400 900 910 A2 A21 A4 A5 A10 * Set + Stand * Stand Base + Body EXPLODED VIEW Many electrical and mechanical parts in this chassis have special safety-related characteristics.
THERMAL THERMAL THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THERMAL THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
USB DOWN STREAM USB DOWN STREAM THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
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Contents of LCD TV Standard Repair Process No. Error symptom (High category) Error symptom (Mid cate gory) 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.
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.
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 Powe.
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 .
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 oth er equipments hav e probl em or not.
A. Video error Tuning fail, Pictur e broken/ Free zing 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.
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 - HD.
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.
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 .
B. Power error Off when on, off while viewing, po wer 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 C.
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.
→ 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 f.
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 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.
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 mo.
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.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il LG Electronics 340T è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del LG Electronics 340T - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso LG Electronics 340T imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul LG Electronics 340T ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il LG Electronics 340T, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del LG Electronics 340T.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il LG Electronics 340T. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo LG Electronics 340T insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
