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Acer AL1912 manual Power Circuit and Backlights Troubleshooting

Models: AL1912

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Power Circuit and Backlights Troubleshooting

Page 42

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Acer AL1912 manual Power Circuit and Backlights Troubleshooting

Contents

Acer AL1912 Service Guide Please refer to http//csd.acer.com.twCopyright DisclaimerConventions PrefaceWARNING FOR FCC CERTIFIED MODELS PRECAUTIONS SPECIAL NOTES ON LCD MONITORS Chapter 7 Schematic Diagram ….……………………………………………………………………..52 Chapter 3 Machine Disassembly and ReplacementChapter 5 Connector Information …………………………………………………………………..45 Chapter 2 Operating Instruction ………………………………………………..……………………..30Chapter Monitor FeatureComparison Chart of AL1912 m/AL1912 INTRODUCTIONMEASUREMENT SYSTEMS ELECTRICAL REQUIREMENTSStandard Test Conditions 1 tesla = 10,000 gauss cm = in x lb = kg xLCD monitor General specification LCD Panel Specification Total output power60 Watt maxLCD Panel Model Hydis LT17E12-200 Sync input Panel Relative Humidity Input SignalsVideo input Interface frequencySupported Timing 85Hz refresh rate Support Video input ConnectorSupport Modes Analog Video input Connector 15pins mini D-SubMONITOR BLOCK DIAGRAM Power boardLVDS Signals BLOCK DIAGRAMSystem Block Diagram MVPRL including ADC Scaling LVDS And OSD functionComponent Monitor board layoutLABEL LABELSoftware flow chart General Instructions AL1912 m AL1912Connecting the AC Power System InstallationConnecting the Display Connecting the Audio Cable For AL1912 m and AL1912 bmBack cover & Bezel concavity Top and BottomLeft and Right Back cover & Bezel concavityLeft and Right Base & Neck concavity 0mm ≤ C ≤ 0.6mmTop and Bottom Back cover & Bezel stepLCD Horizontally GAP Spec Tilt Base RotationPlastic Material Features POWER/Inverter BoardInterface Signals Output Connector & Pin AssignmentElectrical Specification AC-DC Electrical specificationProtection function AC-DC Output SpecificationInverter Electrical Specification SAFETYFor Fujitsu FLC488SC8V-10 AL1912 m Connectors Power ConsumptionCONNECTORS / CONTROLS Monitor Control KeysControl panel monitor front panel Operating InstructionsCONTROLS ChapterMain OSD Menu Outline The description for control function繁體中文简体中文Outline The description for Hot-Key function Hot-Key MenuFor AL1912 m onlyOSD Message Outline The description for OSD Message1 Bright LOGOItem of Factory menu 2 Auto BalancePlug & play DDC2B feature Using The Right Power CordPlug and play White Color Temperature Audio Technical specification For AL1912 m onlyGeneral Description Electrical characteristics Tamb=25 SpeakersAudio amplifierUSE Panasonic VP-7723A Audio Analyzor Disassemble the base Machine Disassembly and ReplacementDisassembly Procedure Disassemble the chassisDisassemble the power board Disassemble the main boardDisassemble the key board 2. Remove the two screws to release line and chassis from bezel Disassemble the speakers1. Remove the two screws to release line and VK board from bezel 3. Remove the four screws from bezelTroubleshooting Main ProcedureChapter Power Circuit and Backlights Troubleshooting Performance Troubleshooting Function Troubleshooting Video input Connector Connector InformationPhonejack stereo ChapterFRU Field Replaceable Unit list ChapterModel AL1912 ModelAL1912 m Part list PhotoPart Name 598 453AAP30031 Power Board to MB cable599 453AAP30021 Inverter BoardFunction Board Panel to MB cableDC020162600 599 454AAPE0001Schematic Diagram ChapterPage Page Page Page Page Page Page Page