[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-647526-105":59,"doc-detail-647526-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","led-tv-service-manual-ua83p-safety-precautions","LED TV Service Manual - UA83P - Safety Precautions","","Confidential LG chassis UA83P LED TV service manual describing safety and servicing precautions for models 49UK6300PUE, 49UK6300BUB, and 49UK6090BUA. It emphasizes replacing special safety-related components with identical parts, avoiding unauthorized design modifications, and using an isolation transformer when the chassis is not isolated from AC mains. Procedures include fuse replacement rules, safe spacing for high-wattage resistors, wiring separation from high-voltage/high-temperature parts, and AC leakage current cold and hot checks with specified measurement limits to prevent shock hazards.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/led-tv-service-manual-ua83p-safety-precautions/647526/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/led-tv-service-manual-ua83p-safety-precautions/647526.png","ImageObject",300,407,{"name":92,"@type":93},"supergirl","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-07","2026-10-23",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why does the manual require replacing safety-related parts with identical recommended components?","Question",{"text":112,"@type":113},"To prevent shock, fire, or other hazards by ensuring the special safety characteristics of those components are preserved.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"When should an isolation transformer be used during servicing?",{"text":117,"@type":113},"When the receiver chassis is not isolated from the AC power line, an isolation transformer of adequate power rating should be used to protect the technician and the receiver components from accidental shorts.",{"name":119,"@type":110,"acceptedAnswer":120},"What are the pass criteria for the leakage current cold check and hot check?",{"text":121,"@type":113},"For the cold check, the measured resistance should be between 1 MΩ and 5.2 MΩ if there is a return path, or infinite when there is no return path. For the hot check, any measured voltage must not exceed 0.75 V RMS (corresponding to 0.5 mA).","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},647526,1792876192,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145,"preview_page_count":4},962088121634,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","CONFIDENTIAL  \nLED TV  \nSERVICE MANUAL  \nCHASSIS : UA83P  \nMODEL : 49UK6300PUE  \n49UK6300BUB  \n49UK6090BUA  \nCAUTION  \nBEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.  \nP/NO : MFL70427803 (1808-REV01)  \nAny reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.  \nCopyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.  \nCONTENTS  \nCONTENTS .............................................................................................. 2  \nSAFETY PRECAUTIONS ........................................................................ 3  \nSERVICING PRECAUTIONS ................................................................... 4  \nSPECIFICATION ....................................................................................... 6  \nSOFTWARE UPDATE ............................................................................. 9  \nBLOCK DIAGRAM ................................................................................. 10  \nEXPLODED VIEW .................................................................................. 22  \nASSEMBLY / DISASSEMBLY ................................................................ 24  \nTROUBLE SHOOTING GUIDE ................................................ APPENDIX  \n-2- Copyright ©  LG Electronics Inc. All rights reserved.  \nOnly for training and service purposes.  \nSAFETY PRECAUTIONS  \nIMPORTANT SAFETY NOTICE  \nMany electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by  in the Exploded View.  \nIt is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards.  \nDo not modify the original design without permission of manufacturer.  \nGeneral Guidance  \nAn isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks.  \nIt will also protect the receiver and it's components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation.  \nIf any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with the specified.  \nWhen replacing a high wattage resistor (Oxide Metal Film Resistor, over 1 W), keep the resistor 10 mm away from PCB.  \nKeep wires away from high voltage or high temperature parts.  \nBefore returning the receiver to the customer,  \nalways perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas, terminals, etc. , tobe sure the set is safe to operate without damage of electrical shock.  \nLeakage Current Cold Check(Antenna Cold Check)  \nWith the instrument AC plug removed from AC source, connect an electrical jumper across the two AC plug prongs. Place the AC switch in the on position, connect one lead of ohm-meter to the AC plug prongs tied together and touch other ohm-meter lead in turn to each exposed metallic parts such as antenna terminals, phone jacks, etc.  \nIf the exposed metallic part has a return path to the chassis, the measured resistance should be between 1 MΩ and 5.2 MΩ .  \nWhen the exposed metal has no return path to the chassis the reading must be infinite.  \nAn other abnormality exists that must be corrected before the receiver is returned to the customer.  \nLeakage Current Hot Check (See below Figure)  \nPlug the AC cord directly into ","cbCaii7N7YvGwgx9","https://ap.wps.com/l/cbCaii7N7YvGwgx9","pdf",13988344,99,"English","# Contents\n## Safety Precautions\n### Important Safety Notice\n### General Guidance\n### Leakage Current Cold Check\n### Leakage Current Hot Check\n## Servicing Precautions\n## General Servicing Precautions","[{\"question\":\"Why does the manual require replacing safety-related parts with identical recommended components?\",\"answer\":\"To prevent shock, fire, or other hazards by ensuring the special safety characteristics of those components are preserved.\"},{\"question\":\"When should an isolation transformer be used during servicing?\",\"answer\":\"When the receiver chassis is not isolated from the AC power line, an isolation transformer of adequate power rating should be used to protect the technician and the receiver components from accidental shorts.\"},{\"question\":\"What are the pass criteria for the leakage current cold check and hot check?\",\"answer\":\"For the cold check, the measured resistance should be between 1 MΩ and 5.2 MΩ if there is a return path, or infinite when there is no return path. For the hot check, any measured voltage must not exceed 0.75 V RMS (corresponding to 0.5 mA).\"}]","LED TV Service Manual - UA83P - Safety Precautions | PDF",1792789149,249]