Lenovo System x3550 M5 - Page 92

Table15.Monitorandvideo'ssymptomsandactions(continued)
•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby“(Trainedtechnicianonly),”thatstepmustbeperformedonlybyatrained
technician.
•GototheSupportWebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,hints,
tips,andnewdevicedriversortosubmitarequestforinformation.
SymptomAction
•Theserveristurnedon.Ifthereisnopowertotheserver,see“Power
problems”onpage80.
•Themonitorcablesareconnectedcorrectly.
•Themonitoristurnedonandthebrightnessandcontrastcontrolsare
adjustedcorrectly.
5.Makesurethatthecorrectserveriscontrollingthemonitor,ifapplicable.
6.Makesurethatdamagedserverfirmwareisnotaffectingthevideo;see
“Updatingthefirmware”onpage33
.
7.ObservethecheckpointLEDsonthesystemboard;ifthecodesarechanging,
gotostep6.
8.Replacethefollowingcomponentsoneatatime,intheordershown,restarting
theservereachtime:
a.Monitor
b.Videoadapter(ifoneisinstalled)
c.(Trainedtechnicianonly)Systemboard
9.See“Solvingundeterminedproblems”onpage89.
Themonitorworkswhen
youturnontheserver,but
thescreengoesblankwhen
youstartsomeapplication
programs.
1.Makesurethat:
•Theapplicationprogramisnotsettingadisplaymodethatishigherthan
thecapabilityofthemonitor.
•Youinstalledthenecessarydevicedriversfortheapplication.
2.Runvideodiagnostics(see“RunningtheDSAPrebootdiagnosticprograms”
onpage68).
•Iftheserverpassesthevideodiagnostics,thevideoisgood;see“Solving
undeterminedproblems”onpage89.
•(Trainedtechnicianonly)Iftheserverfailsthevideodiagnostics,replace
thesystemboard.
Themonitorhasscreen
jitter,orthescreenimageis
wavy,unreadable,rolling,or
distorted.
1.Ifthemonitorself-testsshowthatthemonitorisworkingcorrectly,consider
thelocationofthemonitor.Magneticfieldsaroundotherdevices(suchas
transformers,appliances,fluorescents,andothermonitors)cancausescreen
jitterorwavy,unreadable,rolling,ordistortedscreenimages.Ifthishappens,
turnoffthemonitor.
Attention:Movingacolormonitorwhileitisturnedonmightcausescreen
discoloration.
Movethedeviceandthemonitoratleast305mm(12inches)apart,andturnon
themonitor.
Notes:
a.Topreventdiskettedriveread/writeerrors,makesurethatthedistance
betweenthemonitorandanyexternaldiskettedriveisatleast76mm(3
inches).
b.Non-Lenovomonitorcablesmightcauseunpredictableproblems.
2.Reseatthemonitorcable.
78LenovoSystemx3550M5InstallationandServiceGuide