Motorola GTR 8000 - How to Replace the Dual Circulator;Isolator Modules

9.10.1HowToReplaceTheDualCirculator/IsolatorModules
9.10.1HowToReplaceTheDualCirculator/IsolatorModules
ProcedureSteps
1Wearanelectrostaticdischarge(ESD)strapandconnectitscabletoaveriedgoodground.Thisstrapmustbe
wornthroughoutthisproceduretopreventESDdamagetoanycomponents.
2SettherockerswitchonthefrontofthepowersupplytotheOFF(0)position.
3Disablethebaseradioasfollows:
a.ConnecttothedevicemodulesEthernetserviceportusingConguration/ServiceSoftware(CSS).See4.4.4
ConnectingThroughanEthernetPortLink,page4-11.
b.SelectService→TestMeasurementScreenfromthemenu.
c.ClickChangetoServiceMode.
Stepresult:Thebaseradioisdisabled.
4Removetheltertrayfromtherack,asfollows:
a.LabelanddisconnecttheRFinput,RFoutput,andgroundcablesfromthetray.
b.DisconnecttheCirculatorLoadtemperaturecableattheinlineconnector(whichdisconnectsitfromthe
cableleadingtotheRFPeripheralsportonthebaseradiobackplane).
c.UsingaT30bit,removethetwoscrewswhichsecurethetraytotherack.
d.Slidethetrayoutthefrontoftherack.
5
If...
Then...
YouarereplacinganindividualExternalDual
Circulator/Isolatormodule...
1.LabelanddisconnecttheRFinputandRF
outputcablesfromtheExternalDualCirculator
module.
2.Unscrewtheconnectorthatsecuresthe
CirculatorLoadtotheExternalDualCirculator
module.
3.Removethescrewsthatsecurethecirculator
baseplatetothetray.
4.Removethecirculatormoduleincludingthe
circulatorloadmodulethatextendsbeyondthe
baseplate.
5.PlacethenewExternalDualCirculatormodule
inthetrayinthesamelocationandorientation
asthemoduleyouarereplacing.
6.SecurethenewExternalDualCirculator
modulebaseplatetothetrayusingthescrews
previouslyremoved.
7.ConnecttheRFinputandRFoutputcablesto
thenewExternalDualCirculatormodule.
6871022P86-A-November20129-33