Acer B193R manual No Power, Okng

Page 30

Troubleshooting

Chapter 4

This chapter provides troubleshooting information for the B193R:

1. No Power

No power

Press power key and look if the picture is normal

NG

Please reinsert and make sure the

AC of 100-240 is normal

OKNG

Measure U301 Pin2=3.3V, U304

Pin2=1.8V

NG

OK

Check if X201 oscillate waveforms are normal

NG

Replace X201

OK

Reinsert or check the power section

Measure CN301

OK

Replace U301,U302

Replace U203

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Contents Acer B193R Service Guide Service Guide Version and Revision Version Release Date Revision History TPV modelTrademarks CopyrightDisclaimer ConventionsPreface Precautions Special Notes On LCD MonitorsTable Of Contents Scope Chart of B193RIntroduction DescriptionElectrical Requirements Standard Test ConditionsMeasurement systems LCD Monitor General Specification TTLLCD Panel Specification General SpecificationsElectrical Characteristics Optical Specifications Support Timing Monitor Block Diagram Main Board Diagram Software Flow Chart Remark Symbol Description Main Board LayoutInstallation Height Adjustment Attaching/Removing The BaseTilt SwivelMonitor Pivot External Controls Front panel controlsEColor Management OSD How to Adjust a Setting Adjusting the picture Page Using The Right Power Cord LogoDisassembly Procedure Page Page No Power OkngNo Picture LED is orange Panel Power Circuit OK NGKey Board Power Board No power LED No Backlight Connector Information DVI Connector Exploded Diagram Model B193R ChapterPart List Picture DescriptionFFC Cable Main Board 2007/05/08170A8/90B8 Modify Lvds Output Power board Feedback Layout CN603 Key board