LG Electronics 20LC1R-ZG service manual

Page 18

No Sound

Check the

input source

Pass

Check the input/output

of U301

Pass

Check the input/output

of U201

Pass

Check the speaker

Pass

Check the speaker wire

Fail

Fail

Fail

Fail

Change source input

Re-soldering or Change the defect part Check X301

Re-soldering or Change the defect part

Change speaker

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Image 18

Contents LCD TV Contents Safety Precautions General GuidanceDo not use a line Isolation Transformer during this check Servicing Precautions Electrostatically Sensitive ES DevicesPower Output, Transistor Device Removal/Replacement IC Remove/ReplacementSmall-Signal Discrete Transistor Removal/Replacement Diode Removal/ReplacementDisassembly Mechanical Specification SpecificationGeneral Specification Application rangeReference table-Function Optical CharacterOutgoing Condition Orange Engineering Specification 8-1.General SpecificationBlue OFFLGE Kumi SystemTXT Name PAL-BG Philips MonoAdjustment Instruction Board Assembly line processAdjustment Preparation Iicsw should set to Total Assembly line processOption configuration Confirmation of LuminanceSVC Remocon Troubleshooting AProcessBProcess Fail L110, L112, R194, R198 Page Block Diagram Block Diagram Description Wiring Diagram Exploded View 041 140 030 100 090 070 080 120 060 110 020 010 050Exploded View Parts List DescriptionReplacement Parts List Main Board Capacitor0CE107WF6DC Coil & Filter & Inductor RESISTORs Description / Specification Control Board Page Page Page Page Page Aug