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Chapter6Troubleshooting
Problem Possible cause and remedy
• Themessageshowsthattheinputsignalisout
ofthespeciedfrequencyrange.(Suchsignal
frequencyisdisplayedinmagenta.)
Example:
fD: Dotclock
fH: Horizontalscanfrequency
fV: Verticalscanfrequency
• CheckwhetherthePCisconguredtomeetthe
resolutionandverticalscanfrequencyrequirements
ofthemonitor(see“CompatibleResolutions”inthe
SetupManual.).
• RebootthePC.
• Selectanappropriatedisplaymodeusingthegraphics
board’sutility.Refertothemanualofthegraphics
boardfordetails.
Imaging problems
Problem Possible cause and remedy
3. The screen is too bright or too dark. • Use<Brightness>or<Contrast>intheAdjustment
menutoadjustit.(TheLCDmonitorbacklighthasa
limitedlifespan.Whenthescreenbecomesdarkor
beginstoicker,contactyourlocaldealer.)
4. Characters are blurred. • CheckwhetherthePCisconguredtomeetthe
resolutionandverticalscanfrequencyrequirements
ofthemonitor(see“CompatibleResolutions”inthe
SetupManual.).
5. Afterimages appear. • AfterimagesareparticulartoLCDmonitors.Avoid
displayingthesameimageforalongtime.
• Usethescreensaverorpowersavefunctiontoavoid
displayingthesameimageforextendedperiodsof
time.
6. Green/red/blue/white dots or defective
dots remain on the screen.
• ThisisduetoLCDpanelcharacteristicsandisnota
failure.
7. Interference patterns or pressure marks
remain on the screen.
• Leavethemonitorwithawhiteorblackscreen.The
symptommaydisappear.