LG 42LT380C/380H-ZA Instrukcja Użytkownika

Printed in KoreaP/NO : MFL67368123 (1208-REV00)CHASSIS : LD2AZMODEL : 42LT380C/380H42LT380C/380H-ZACAUTIONBEFORE SERVICING THE CHASSIS,READ THE SAFETY

- 10 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesADJUSTMENT INSTRUCTION1. App

- 11 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposes3.1. ADC Process(1) ADC- Ent

- 12 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposes▪ Auto adjustment Map(using

- 13 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposes(1) FHD RGB EDID data(2) FHD

- 14 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposes5. Model name & Serial n

- 15 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposes6. CI+ Key Download method6.

- 16 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesF -SCARTIF_N/P_MSTARNAND Fla

- 17 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesLV13002005405215305508108201

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

- 2 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesCONTENTSCONTENTS ...

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

- 3 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesMany electrical and mechanica

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATESSPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.FILRE AND ELECTRICAL SHOCK HAZARDS

Contents of LCD TV Standard Repair ProcessNo. Error symptom (High category) Error symptom (Mid category) Page Remarks1A. Video errorNo video/Normal au

Normal audioYNMove to No video/No audioNo videoNormal audioCheck Back LightOn with naked eyeOnYNCheck Main Board3.5V,12V,3.3V,1.26V, 1.5V etc.Normal v

- 4 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesSERVICING PRECAUTIONSCAUTION:

Normalvoltage?Check various voltages of Power Board ( 3.5V,12V,20V or 24V…)No Video/No audioCheck and replace MAIN B/DYReplace Power Board and repair

A. Picture ProblemPicture broken/ FreezingYNNCheck RF Signal levelNormal Signal?Check RF Cable Connection1. ReconnectionCheckS/W VersionS/W UpgradeChe

Colorerror?YN※ Check and replace Link Cable(LVDS) and contact conditionYNReplace Main B/DColorerror?Check error color input modeCheck color by input-E

Screennormal?NYCheck external device connection conditionYNCheck and replace Link CableNormal?YNScreennormal?Replace Main B/DReplace moduleCheck color

B. Power errorNo powerPower LEDOn?YNDC Power onby pressing Power Key On Remote controlYNNormal operation?Check Power On ‘”High”Check Power cordwas in

B. Power errorOff when on, off while viewing, power auto on/offError?NYCheck Power OffStarus(instart menuFix A/C cord & Outlet and check each 3 ph

No audioScreen normalCheck user menu > Speaker offOffNYCancel OFF Check audio B+ 20V or 24V of Power BoardNormalvoltageYNReplace Power Board and r

→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audioC. Audio errorWrecked audio/ discontinuation/noise Wreck

D. General Function ProblemRemote control & Local switch checkingYN1. Remote control(R/C) operating errorCheck R/C itself OperationNormaloperating

Check technical information- Fix information- S/W VersionNYTechnical information?Check input signalSignalinput?YNExternal Input andComponentRecognitio

- 5 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesIC Remove/ReplacementSome cha

Check location of noiseIdentify nose typeCircuit noiseReplace PSU(with LED driver)Replace LED driver Mechanical noiseCheck location of noiseOR※ When t

Replace moduleZoom part with exterior damageModuledamageCabinetdamageReplace cabinetReplace remote controllerRemote controllerdamageStanddentReplace s

MENU -Æ red key(customer support -Æ signal test-Æ select channel When the signal is strong, use the attenuator (-10dB, -15dB, -20dB etc.)Standard Repa

Standard Repair Process Detail Technical ManualLCD-TV Version checking methodA. Video error_Video error, video lag/stop 1. Checking method for remote

Standard Repair Process Detail Technical ManualAdjustment Test pattern - ADJ KeyA. Video error_Color error You can view 6 types of patterns using the

Solder defect, CNT BrokenT-Con Defect, CNT BrokenT-Con Defect, CNT BrokenT-Con Defect, CNT BrokenSolder defect, CNT BrokenSolder defect, CNT BrokenSol

Abnormal Power SectionSolder defect, Short/CrackAbnormal Power SectionSolder defect, Short/CrackFuse Open, Abnormal power sectionNoiseGRADATIONGRADATI

Appendix : Exchange PSU(LED driver)No LightDim LightDim LightDim LightNo picture/Sound OkA - 3/5Copyright © 2012 LG Electronics. Inc. All rights reser

Appendix : Exchange the Module (1)Panel Mura, Light leakagePress damageCrosstalkCrosstalkPress damagePanel Mura, Light leakagePress damageA - 4/5Un-re

Vertical BlockSource TAB IC DefectHorizontal BlockGate TAB IC DefectGate TAB IC DefectGate TAB IC DefectVertical LineSource TAB IC DefectVertical Bloc

- 6 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesSPECIFICATIONNOTE : Specifica

Entry method1. Press the IN-START button of the remote controller for adjustment2. Check the entry into adjustment item 3Standard Repair Process Detai

Checking method1. Press the MENU button on the remote controller2. Select the AUDIO function of the Menu3. Select TV Speaker from Off to OnStandard Re

- 7 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposesNo. Item Specication Remarks

- 8 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposes5. Video resolutions (2D)5.1.

- 9 -LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.Only for training and service purposes5.3. HDMI Input(PC/DTV)No. Re