Lenovo x3250 m6 - Page 81

Table15.Monitorandvideosymptomsandactions(continued)
SymptomAction
3.Makesurethatthecorrectserveriscontrollingthemonitor,ifapplicable.
4.Makesurethatdamagedserverfirmwareisnotaffectingthevideo.See
“Updatingthefirmware”onpage25
.
5.ObservethecheckpointLEDsonthesystemboard;ifthecodesarechanging,
gotothenextstep.
6.Replacethefollowingcomponentsoneatatime,intheordershown,restarting
theservereachtime:
a.Monitor
b.Videoadapter(ifoneisinstalled)
c.(Trainedtechnicianonly)Systemboard
Themonitorworkswhen
youturnontheserver,but
thescreengoesblankwhen
youstartsomeapplication
programs.
1.Makesurethat:
•Theapplicationprogramisnotsettingadisplaymodethatishigherthan
thecapabilityofthemonitor.
•Youinstalledthenecessarydevicedriversfortheapplication.
2.Runvideodiagnostics.See“RunningDSAPrebootdiagnosticprogram”on
page59
.
•Iftheserverpassesthevideodiagnostics,thevideoisgood.Then,youcan
referto“Solvingundeterminedproblems”onpage72.
•(Trainedtechnicianonly)Iftheserverfailsthevideodiagnostics,replace
thesystemboard.
Themonitorhasscreen
jitter,orthescreenimageis
wavy,unreadable,rolling,or
distorted.
1.Ifthemonitorself-testsshowthatthemonitorisworkingproperly,consider
thelocationofthemonitor.Magneticfieldsaroundotherdevices(suchas
transformers,appliances,fluorescents,andothermonitors)cancausescreen
jitterorwavy,unreadable,rolling,ordistortedscreenimages.Ifthishappens,
turnoffthemonitor.
Attention:Movingacolormonitorwhileitisturnedonmightcausescreen
discoloration.
Movethedeviceandthemonitoratleast305mm(12inches.)apart,andturn
onthemonitor.
Note:Non-Lenovomonitorcablesmightcauseunpredictableproblems.
2.Reseatthemonitorandcable.
3.Replacethefollowingcomponentsoneatatime,intheordershown,restarting
theservereachtime:
a.Monitor
b.(Trainedtechnicianonly)Systemboard
Wrongcharactersappearon
thescreen.
1.Ifthewronglanguageisdisplayed,updatetheserverfirmwaretothelatestlevel
(see“Updatingthefirmware”onpage25
)withthecorrectlanguage.
2.Reseatthemonitorandcable.
3.Replacethefollowingcomponentsoneatatime,intheordershown,restarting
theservereachtime:
a.Monitor
b.(Trainedtechnicianonly)Systemboard
Chapter5.Troubleshooting67