Zte NetNumen U31 R06 - 13.2 Powering on the E4140 Shelves

Chapter13SystemPower-On
13.2PoweringontheE4140Shelves
ThisproceduredescribeshowtopowerontheE4140shelvesandtheboardsinthese
shelves.
lPowerissuppliedtotheE4140shelvesinthesamecabinetfrombottomtotop.
lThepowersuppliedtoeachE4140shelfiscontrolledbyfourpowerswitches.During
thepower-on,theswitchesinAreaAoftheuniedPDU(seeFigure6-2)shouldbe
turnedonbeforetheswitchesinAreaBareturnedon.
ForthepowercableconnectionsoftheE4140shelves,seeFigure8-1.
Prerequisite
lYouknowtheelectricalcontrolrelationshipsbetweentheuniedPDUandeach
assembly.
lAmultimeterisready.
Steps
1.PerformthefollowingproceduresbeforepoweringonanE4140shelf.
a.VerifythatDualIn-linePackage(DIP)switchesoftheshelfhavebeensetinthe
correctpositions.
b.VerifythattheswitchoftheNewPowerEntryModule(NPEM)intheshelfisset
to"OFF".
c.Verifythatallboardsarecorrectlyinstalledintotheshelfandtheextractorsonthe
frontboardsareopened.
d.Ensurethatthefanmodulesarepresent.
Caution!
Duringequipmentoperation,ifyouwanttomaintainthefanmodule,you
mustcompletethemaintenancequicklytopreventhardwaredamagedueto
overheating.
2.Powerontheshelf.
a.SettheshelfswitchinAreaAoftheuniedPDUto"ON".
b.UsethemultimetertocheckthePDU'soutputvoltages.
Thetoleranceofthe–48Vvoltageisfrom–40Vto–57V,thetoleranceofthe–60
Vvoltageisfrom–50Vto–72V.
c.Verifythatthe–48VAand–48VBindicatorsontheNPEMareashingredand
theOKindicatorisashinggreen.
13-3
SJ-20141121113158-006|2014-12-20(R1.0)ZTEProprietaryandCondential