LG Electronics L1733TR, L1933TR service manual Schematic Diagram, Scaler, LGE Internal Use Only

Page 31

SCHEMATIC DIAGRAM

1. SCALER

Copyright 2007 LG Electronics. Inc. All right reserved.	LGE Internal Use Only
Only for training and service purposes	- 31 -
Only for training and service purposes

Image 31

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 theGeneral Servicing Precautions SERVICING PRECAUTIONSElectrostatically Sensitive ES Devices Removal/Replacement IC Remove/ReplacementReplacement Small-SignalDiscrete TransistorAt IC Connections Circuit Board Foil RepairAt Other Connections VIDEO TIMING CHARTSYNC 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 MStarACEPOWER BLOCK DIAGRAM-POWERINVERTER 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 OSD1. NO POWER TROUBLESHOOTING GUIDEWaveforms 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 OnlyOnly for training and service purposes EXPLODED VIEWLGE Internal Use Only Ref. No EXPLODED VIEW PARTS LISTDescription CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS REPLACEMENT PARTS LISTSAFETY Mark Only for training and service purposes TRANSISTOR Only for training and service purposes LGE Internal Use Only FILTERsTRANSISTORs & ICs Only for training and service purposesLGE Internal Use Only CAPACITORSLGE Internal Use Only Only for training and service purposesTRANSFORMER LGE Internal Use Only SCHEMATIC DIAGRAM1. SCALER Only for training and service purposesOnly 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 P/NO MFL43002807 Feb

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