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LG Electronics L1933TR Power, LGE Internal Use Only, Only for training and service purposes

Models: L1733TR L1933TR

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4. POWER

Copyright 2007 LG Electronics. Inc. All right reserved.	LGE Internal Use Only
Only for training and service purposes	- 34 -
Only for training and service purposes

Page 34

Image 34

LG Electronics L1933TR, L1733TR service manual Power, LGE Internal Use Only, Only for training and service purposes

Contents

CHASSIS NO. LM57B READ THE SAFETY PRECAUTIONS IN THIS MANUALSame model for Service BEFORE SERVICING THE UNITCONTENTS SPECIFICATIONSmarked on the schematic diagram and the PRECAUTIONWARNING FOR THE SAFETY-RELATEDCOMPONENT Leakage Current Hot Check CircuitGeneral Servicing Precautions SERVICING PRECAUTIONSElectrostatically Sensitive ES Devices Small-SignalDiscrete Transistor IC Remove/ReplacementReplacement Removal/ReplacementAt IC Connections Circuit Board Foil RepairAt Other Connections VIDEO TIMING CHARTSYNC Soft pad on the table DISASSEMBLY-SetOnly for training and service purposes Pull up the stand part1.Pull the front cover upward Only for training and service purposesRemove the screws 3.Put the front face downDISASSEMBLY-Stand In case of Latch #1-1Only for training and service purposes In case of Latch #1DISASSEMBLY-Stand Hold the stand bodyMStarACE BLOCK DIAGRAMLIPS Line BufferPOWER BLOCK DIAGRAM-POWERINVERTER 1.Video Controller Part DESCRIPTION OF BLOCK DIAGRAM2.Power Part 3.MICOM PartPRIMARY LIPS Board Block Diagram6.Signal collection Operation description LIPSADJUSTMENT SERVICE OSD Figure 1. Cable Connection1. NO POWER TROUBLESHOOTING GUIDEWaveforms 2. NO RASTER OSD IS NOT DISPLAYED - LIPS 3. NO RASTER OSD IS NOT DISPLAYED - MSTAR Waveforms4. TROUBLE IN DPM Waveforms5. POWER 6. Raster LGE Internal Use Only WIRING DIAGRAMOnly for training and service purposes 6631900109AOnly for training and service purposes EXPLODED VIEWLGE Internal Use Only Ref. No EXPLODED VIEW PARTS LISTDescription Only for training and service purposes REPLACEMENT PARTS LISTSAFETY Mark CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTSFILTERs Only for training and service purposesLGE Internal Use Only TRANSISTORCAPACITORS Only for training and service purposesLGE Internal Use Only TRANSISTORs & ICsLGE Internal Use Only Only for training and service purposesTRANSFORMER Only for training and service purposes SCHEMATIC DIAGRAM1. SCALER LGE Internal Use OnlyOnly for training and service purposes 2. POWER & WAFERLGE Internal Use Only Only for training and service purposes 3. INVERTERLGE Internal Use Only Only for training and service purposes 4. POWERLGE Internal Use Only Feb P/NO MFL43002807