Acer B193R manual No Picture LED is orange

Page 31

2. No Picture (LED is orange)

No picture

The button if under	NG
control

OK

Measure U301 Pin2=3.3V, U304 Pin2=1.8V

OK

Check X201 oscillate waveform is normal

X201 oscillate waveform is normal

OK

Check reset circuit of U203 is normal

OK

Replace U203

NG

NG

Replace X201

NG	Check Correspondent
	component

NG

OK

Check HS/VS from

CN101 is normal

NG

OK

Replace U203

Replace U301, U302

Replace X201

Check Correspondent component

31

Image 31

Contents Acer B193R 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 B193RIntroduction ScopeStandard Test Conditions Electrical RequirementsMeasurement systems TTL LCD Monitor General SpecificationGeneral Specifications LCD Panel SpecificationElectrical Characteristics Optical Specifications Support Timing Monitor 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 CordDisassembly Procedure Page 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 B193RPicture Description Part ListFFC Cable 2007/05/08 Main Board170A8/90B8 Modify Lvds Output Power board Feedback Layout CN603 Key board