Lenovo System x3550 M4 - Page 160

•FollowthesuggestedactionsintheorderinwhichtheyarelistedintheActioncolumnuntiltheproblemis
solved.
•Ifanactionstepisprecededby“(Trainedtechnicianonly),”thatstepmustbeperformedonlybyatrained
technician.
•Gotothesupportwebsiteathttp://www.lenovo.com/supporttocheckfortechnicalinformation,hints,tips,
andnewdevicedriversortosubmitarequestforinformation.
SymptomAction
•Theserveristurnedon.Ifthereisnopowertotheserver,see“Power
problems”onpage148
.
•Themonitorcablesareconnectedcorrectly.
•Themonitoristurnedonandthebrightnessandcontrastcontrolsare
adjustedcorrectly.
5.Makesurethatthecorrectserveriscontrollingthemonitor,ifapplicable.
6.Makesurethatdamagedserverfirmwareisnotaffectingthevideo;see
“Updatingthefirmware”onpage93.
7.ObservethecheckpointLEDsonthesystemboard;ifthecodesarechanging,
gotostep6.
8.Replacethefollowingcomponentsoneatatime,intheordershown,restarting
theservereachtime:
a.Monitor
b.Videoadapter(ifoneisinstalled)
c.(Trainedtechnicianonly)Systemboard.
9.See“Solvingundeterminedproblems”onpage158.
Themonitorworkswhen
youturnontheserver,but
thescreengoesblankwhen
youstartsomeapplication
programs.
1.Makesurethat:
•Theapplicationprogramisnotsettingadisplaymodethatishigherthan
thecapabilityofthemonitor.
•Youinstalledthenecessarydevicedriversfortheapplication.
2.Runvideodiagnostics(see“RunningtheDSAPrebootdiagnosticprograms”
onpage137
).
•Iftheserverpassesthevideodiagnostics,thevideoisgood;see“Solving
undeterminedproblems”onpage158
.
•(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(12inch)apart,andturnon
themonitor.
Notes:
a.Topreventdiskettedriveread/writeerrors,makesurethatthedistance
betweenthemonitorandanyexternaldiskettedriveisatleast76mm(3
inch).
b.Non-Lenovomonitorcablesmightcauseunpredictableproblems.
2.Reseatthemonitorcable.
146Systemx3550M4InstallationandServiceGuide