
CESSNAAIRCRAFTCOMPANY
MODEL525B
MAINTENANCEMANUAL
(c)TheLRUversion.
(5)RefertotheGarminG3000IntegratedAvionicsSystemLineMaintenanceManualCessna
CitationCJ3+,P/Ndocument190-01785-00,Section4.0forthepossiblecausesforthesystem
fault.
B.TroubleshootaCaution(amber)orFailedX(red)thatshowsonthedisplay.
(1)Usethesystemfaultsymptoms,advisorymessages,G3000initiatedmanualtestresults,and
theG3000LineMaintenanceManualrecommendedprocedurestoanalyzethesystemfaultand
makeadecisionastothebestprocedurestofollowtocorrectthesystemproblem.
(2)Whenaproblemiscorrected,checkthesystemoperationagain.
(3)Dothestepsthatfollowthatareapplicabletothefaultanalysiscompletedforthesystemfault.
(a)IftheGTCAvionicsStatuspageshowsacongurationorsoftwareproblemloadthecorrect
version.RefertoGarminG3000IntegratedAvionicsSystem-Adjustment/Test.
(b)Ifthesoftware/congurationdoesnotuploadforaspecicLRUrefertoSoftwareUpload
Troubleshooting.
(c)Ifthereisstillacongurationand/orsoftwareproblemafteryouuploadtheLRUspecic
les,uploadtheentireG3000systemcongurationandsoftwareles.RefertoGarmin
G3000IntegratedAvionicsSystem-Adjustment/T est.
(4)Ifasatelliteisusedforthesystemtotransmit/receive,makesurethattheantennalocationon
theairplanehasanunobstructedviewofthesatellite.
C.WiringTroubleshooting
(1)DoaVisualcheckoftheapplicableLRUelectricalconnector(s)andairplaneelectrical
connectorsfortheunserviceableconditionsthatfollow:
•Bentpins
•Pushedbackpins
(a)Repairfounddamage.
(2)AtthesuspectLRUconnectormakesurethatelectricalpowerandgroundsignalsarepresent.
(3)Makesurethatdatabuslinesareproperlyterminatedandsecure.Useanohmmetertodoa
continuitycheckofthebuswires.Checkeachwireendtoend.
NOTE:Donotbuswiringtoeachotherorshieldgrounds.ChecktheHSDBandARINC429
buswiring.
(4)Ifapplicable,refertotheModel525BWiringDiagramManualanddoavisualcheckofthewiring
componentsthatfollowandmakesurethat:
•TheLRU'slocationstrappingiscorrect
•OthernecessaryG3000systemstrappingiscorrect.
(5)DoaVisualcheckofthewiringbundlesfordamage.
(a)Ifnecessary,repairorreplacethewiringbundles.
(6)Doacheckoftheapplicablesystemwiringforcontinuity,groundfaultsorotherunserviceable
conditions.RefertotheModel525BWiringDiagramManual.
(a)Ifnecessary,repairorreplacethewiringbundles.
(7)FortheVHF ,DataLinkandGPSsystems,doavisualcheckofthecoaxialcableconnectionsto
theapplicableLRUandantenna(s)andifnecessary:
(a)Tightenloosecoaxialcableconnectors.
(b)Repairorreplaceunserviceablecoaxialcable.
(8)IftherearetwoidenticalLRUsinstalled,interchangetheLRUpositionsandchecksystem
operationagain.
NOTE:WhenredundantLRUsareinterchangedintheairplaneandarekeptinthenew
position,theymustbeconguredagain.RefertoGarminG3000IntegratedAvionics
System-Adjustment/T est.
(a)IftheproblemfollowstheLRU,replacetheLRUandchecksystemoperationagain.
(b)IftheproblemdoesnotfollowtheLRU,thereisawiringbundle,coaxial,antennaor
conguration/softwarefault.Continuetroubleshootingthesystemfault.Ifnecessary,
contactCessnaCustomerService.Forcontactinformation,refertotheIntroduction.
34-65-00Page102
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