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LG Electronics L1733TR, L1933TR service manual Feb, P/NO MFL43002807

Models: L1733TR L1933TR

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Page 35

	Feb. 2007
P/NO : MFL43002807	Printed in Korea

Page 35

Image 35

LG Electronics L1733TR, L1933TR service manual Feb, P/NO MFL43002807

Contents

BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUALSame model for Service CHASSIS NO. LM57BSPECIFICATIONS CONTENTSLeakage Current Hot Check Circuit PRECAUTIONWARNING FOR THE SAFETY-RELATEDCOMPONENT marked on the schematic diagram and theElectrostatically Sensitive ES Devices SERVICING PRECAUTIONSGeneral Servicing Precautions Removal/Replacement IC Remove/ReplacementReplacement Small-SignalDiscrete TransistorAt Other Connections Circuit Board Foil RepairAt IC Connections SYNC TIMING CHARTVIDEO Pull up the stand part DISASSEMBLY-SetOnly for training and service purposes Soft pad on the table3.Put the front face down Only for training and service purposesRemove the screws 1.Pull the front cover upwardIn case of Latch #1-1 DISASSEMBLY-StandHold the stand body In case of Latch #1DISASSEMBLY-Stand Only for training and service purposesLine Buffer BLOCK DIAGRAMLIPS MStarACEINVERTER BLOCK DIAGRAM-POWERPOWER 3.MICOM Part DESCRIPTION OF BLOCK DIAGRAM2.Power Part 1.Video Controller PartOperation description LIPS LIPS Board Block Diagram6.Signal collection PRIMARYADJUSTMENT Figure 1. Cable Connection SERVICE OSDWaveforms TROUBLESHOOTING GUIDE1. NO POWER 2. NO RASTER OSD IS NOT DISPLAYED - LIPS Waveforms 3. NO RASTER OSD IS NOT DISPLAYED - MSTARWaveforms 4. TROUBLE IN DPM5. POWER 6. Raster 6631900109A WIRING DIAGRAMOnly for training and service purposes LGE Internal Use OnlyLGE Internal Use Only EXPLODED VIEWOnly for training and service purposes Description EXPLODED VIEW PARTS LISTRef. No CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS REPLACEMENT PARTS LISTSAFETY Mark Only for training and service purposesTRANSISTOR Only for training and service purposesLGE Internal Use Only FILTERsTRANSISTORs & ICs Only for training and service purposesLGE Internal Use Only CAPACITORSTRANSFORMER Only for training and service purposesLGE Internal Use Only LGE Internal Use Only SCHEMATIC DIAGRAM1. SCALER Only for training and service purposesLGE Internal Use Only 2. POWER & WAFEROnly for training and service purposes LGE Internal Use Only 3. INVERTEROnly for training and service purposes LGE Internal Use Only 4. POWEROnly for training and service purposes P/NO MFL43002807 Feb

Feb. 2007

P/NO : MFL43002807

Printed in Korea