Acer B203W manual No Picture LED is orange

Page 31

2. No Picture (LED is orange)

No picture

The button if under	NG
control

OK

Measure U701 Pin2=3.3V,

OK

Check X401 oscillate waveform is normal

NG

OK

Check HS/VS from

CN101 is normal

X401 oscillate waveform is normal

OK

Check reset circuit of

U401 is normal

OK

Replace U401

NG

Replace U701

Replace X401

NG

Replace X401

NG	Check Correspondent
	component

NG

OK

Replace U401

Check Correspondent component

31

Image 31

Contents Acer B203W Service Guide Version Release Date Revision History TPV model Service Guide Version and RevisionConventions CopyrightDisclaimer TrademarksPreface Special Notes On LCD Monitors PrecautionsTable Of Contents Description Chart of B203WIntroduction ScopeStandard Test Conditions Electrical RequirementsMeasurement 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 AdjustmentSwivel TiltMonitor Pivot Front panel controls External ControlsEColor Management OSD How to Adjust a Setting Adjusting the picture Page Logo Using The Right Power Cord Disassembly 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