Acer B203W manual Key Board

Page 33

4. Key Board

OSD is unstable or not working

NG

Is Key Pad Board connecting normally?

Y

NG

Is Button Switch normally?

Y

NG

Is Key Pad Board normally?

Y

Check Main Board

33

Connect Key Board

Replace Button Switch

Replace Key Board

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Contents Acer B203W Service Guide Version Release Date Revision History TPV model Service Guide Version and RevisionDisclaimer CopyrightTrademarks ConventionsPreface Special Notes On LCD Monitors PrecautionsTable Of Contents Introduction Chart of B203WScope DescriptionElectrical Requirements Standard Test ConditionsMeasurement systems TTL LCD Monitor General SpecificationGeneral Specifications Functional Block Diagram LCD Panel SpecificationTFT LCD Module－Power Specification Backlight Unit Electrical CharacteristicsOptical Specifications Horizontal Vertical Support TimingMonitor Block Diagram Main Board Diagram Software Flow Chart Remark Main Board Layout Symbol DescriptionInstallation Attaching/Removing The Base Height AdjustmentTilt SwivelMonitor Pivot Front panel controls External ControlsEColor Management OSD How to Adjust a Setting Adjusting the picture Page Logo Using The Right Power CordDisassembly Procedure Page Okng No PowerNo Picture LED is orange OK NG Panel Power CircuitKey Board Power Board No power LED No Backlight Connector Information DVI Connector Chapter Exploded Diagram Model B203WPicture Description Part ListFFC Cable To GND From Mvcc to Esdvcc to Main BoardChange the type of resistor R301 from 0805 to Both 223 and 252 foot-print LAY Power board Feedback Layout CN603 Key board
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