26
Chapter5Troubleshooting
5-2. Imaging problems (for both digital and analog)
Problem
Possible cause and remedy
1. The screen is too bright or too dark.
• Use“Brightness”or“Contrast”intheAdjustmentmenu
toadjustit.(TheLCDmonitorbacklighthasalimitedlife
span.Whenthescreenbecomesdarkorbeginstoflicker,
contactyourlocaldealer.)
• Turnonthe“AutoEcoView”functionintheAdjustment
menu.Themonitordetectstheenvironmentalbrightness
toadjustthescreenbrightnessautomatically(see
2.Enabling/DisablingAutomaticBrightnessAdjustment”
(page24)
).
2. The screen suddenly became dark. / The
value for “Brightness” in the Adjustment
menu cannot be set to 70% or higher.
• Themonitoralwaysmonitorsitsinternaltemperature.
Iftheinternalmonitorreachesahightemperatureand
exceedsthespecifiedvalue,themonitorwillautomatically
enterthefollowingstatetodecreasethetemperature.
-When“Brightness”exceeds70%,reducethesetting
valueto70%.
-Thesettingvaluefor“Brightness”cannotbesetto70%
orhigher.
Thisstatewillreturntotheoriginalwhentheinternal
temperaturedecreases.
Iftheinternaltemperatureincreasesfurtherevenafter
the“Brightness”settingisdecreased,a“WARNING”
messageisdisplayedandthemonitorpoweris
automaticallyturnedoff.(Powerindicatorflashesgreen.)
3. Characters are blurred.
• CheckwhetherthePCisconfiguredtomeettheresolution
andverticalscanfrequencyrequirementsofthemonitor.
(“CompatibleResolutions”intheSetupManual.)
• Use“OutlineEnhancer”intheAdjustmentmenutoadjust
it(see
“Toenhanceoutlineofimage”(page18)
).
4. Afterimages appear.
• AfterimagesareparticulartoLCDmonitors.Avoid
displayingthesameimageforalongtime.
• Usethescreensaverorpowersavingfunctiontoavoid
displayingthesameimageforextendedperiodsoftime.
5. Green/red/blue/white dots or defective
dots remain on the screen.
• ThisisduetoLCDpanelcharacteristicsandisnota
failure.
6. Interference patterns or pressure marks
remain on the screen.
• Leavethemonitorwithawhiteorblackscreen.The
symptommaydisappear.
7. Noise appears on the screen.
• WhenenteringthesignalsofHDCPsystem,thenormal
imagesmaynotbedisplayedimmediately.