HP 85662A Mode d'emploi

TroubleshootingandRepairManual

HP85662ASpectrumAnalyzerIF-DisplaySection

Wj/Sl HEWLETT

WMM PACKARD

HPPartNo.85662-90085MicrofichePartNo.85662-90086

PrintedinUSADecember1990

@CopyrightHewlett-PackardCompany1990

AllRightsReserved.Reproduction,adaptation,ortranslationwithoutpriorwritten

permissionisprohibited,exceptasallowedunderthecopyrightlaws.

1212ValleyHouseDrive,RohnertPark,CA94928-4999,USA

Certification

Hewlett-PackardCompanycertifiesthatthisproductmetitspublishedspecificationsatthe

timeofshipmentfromthefactory.Hewlett-Packardfurthercertifiesthatitscalibration

measurementsaretraceabletotheUnitedStatesNationalInstituteofStandardsand

Technology,totheextentallowedbytheInstitute’scalibrationfacility,andtothecalibration

facilitiesofotherInternationalStandardsOrganizationmembers.

Warranty

ThisHewlett-Packardinstrumentproductiswarrantedagainstdefectsinmaterialand

workmanshipfora periodofoneyearfromdateofshipment.Duringthewarrantyperiod,

Hewlett-PackardCompanywill,atitsoption,eitherrepairorreplaceproductswhichproveto

bedefective.

Forwarrantyserviceorrepair,thisproductmustbereturnedtoa servicefacilitydesignated

byHP.BuyershallprepayshippingchargestoHPandHPshallpayshippingchargesto

returntheproducttoBuyer.However,Buyershallpayallshippingcharges,duties,andtaxes

forproductsreturnedtoHPfromanothercountry.

HPwarrantsthatitssoftwareandfirmwaredesignatedbyHPforusewithaninstrument

willexecuteitsprogramminginstructionswhenproperlyinstalledonthatinstrument.HP

doesnotwarrantthattheoperationoftheinstrument,orsoftware,orfirmwarewillbe

uninterruptedorerror-free.

LimitationofWarranty

Theforegoingwarrantyshallnotapplytodefectsresultingfromimproperorinadequate

maintenancebyBuyer,Buyer-suppliedsoftwareorinterfacing,unauthorizedmodificationor

misuse,operationoutsideoftheenvironmentalspecificationsfortheproduct,orimproper

sitepreparationormaintenance.

NOOTHERWARRANTYISEXPRESSEDORIMPLIED.HPSPECIFICALLY

DISCLAIMSTHEIMPLIEDWARRANTIESOFMERCHANTABILITYANDFITNESS

FORA PARTICULARPURPOSE.

ExclusiveRemedies

THEREMEDIESPROVIDEDHEREINAREBUYER’SSOLEANDEXCLUSIVE

REMEDIES.HPSHALLNOTBELIABLEFORANYDIRECT,INDIRECT,SPECIAL,

INCIDENTAL,ORCONSEQUENTIALDAMAGES,WHETHERBASEDON

CONTRACT,TORT,ORANYOTHERLEGALTHEORY.

Assistance

Product maintenance agreements and other customer assistance agreements are available for

Hewlett-Packard products.

For any assistance, contact your nearest Hewlett-Packard SalesandServiceOffice.

iff

SafetySymbols

Thefollowingsafetysymbolsareusedthroughoutthismanual.Familiarizeyourselfwitheach

ofthesymbolsanditsmeaningbeforeoperatingthisinstrument.

Caution

•

Thecaution signdenotesa hazard.Itcallsattentiontoa procedurewhich,

ifnotcorrectlyperformedoradheredto,couldresultindamagetoor

destructionoftheinstrument.Donotproceedbeyonda caution signuntilthe

indicatedconditionsarefullyunderstoodandmet.

Warning

0 Thewarning signdenotesa hazard.Itcallsattentiontoa procedurewhich,

ifnotcorrectlyperformedoradheredto,couldresultininjuryorlossoflife.

Donotproceedbeyonda warning signuntiltheindicatedconditionsarefully

understoodandmet.

GeneralSafetyConsiderations

Warning

0 Before this instrument is switched on, makesureithasbeenproperlygrounded

throughtheprotectiveconductoroftheacpowercabletoa socketoutlet

providedwithprotectiveearthcontact.

Anyinterruptionoftheprotective(grounding)conductor,insideoroutside

theinstrument,ordisconnectionoftheprotectiveearthterminalcanresultin

personalinjury.

WarningTherearemanypointsintheinstrumentwhichcan,ifcontacted,causepersonal

injury.Beextremelycareful.

9Anyadjustmentsorserviceproceduresthatrequireoperationoftheinstrument

withprotectivecoversremovedshouldbeperformedonlybytrainedservice

personnel.

Caution

•

Before this instrument is switched on, makesureitsprimarypowercircuitry

hasbeenadaptedtothevoltageoftheacpowersource.

Failuretosettheacpowerinputtothecorrectvoltagecouldcausedamageto

theinstrumentwhentheacpowercableispluggedin.

Contents

IF-DisplaySectionGeneralinformationonthecontentsofthemanual,includingstorage,

GeneralInformationshipment,andpackaging.

IFOverallBlockMnemonicTable,InstrumentBusPinConnectionTable,andOverall

DiagramIFBlockDiagram.

AlDisplaySectionAlDisplaySectionTroubleshootinginformation,BlockDiagram,and

A1A1throughA1A10servicesheets.

A3DigitalStorageA3DigitalStorageTroubleshootinginformation,BlockDiagram,and

TroubleshootingA3A1throughA3A10servicesheets.

A4IFSectionA4SectionBlockDiagram,andA4A1throughA4A10servicesheets.

Troubleshooting

OptionsInformationandservicesheetsthatexplainthedifferencebetweenan

IF-DisplaySectionwithanoptionanda standardIF-DisplaySection.

GeneralPartsListingReplaceablepartsinformationandpartsidentificationfigures.

MajorAssemblyandMajorassemblyandcomponentlocations.

ComponentLocations

Contents1

IF-DisplaySectionGeneralInformation

IF-DisplaySectionService

Introduction

ThisTroubleshootingandRepairManualcontainsinformationfor thetroubleshootingand

repairoftheIF-DisplaySectionoftheinstrument.Thisinformationiscombinedinservice

sheetsandindexedwithtabsforquickreference.

InstrumentsCoveredbyThisManual

-HP85662AIF-DisplaySections,serialnumberprefixes2403Aandabove.

-Option067(1kHzto3 MHzResolutionBandwidthsfortheHP8567ASpectrumAnalyzer),

■Option400(400Hzoperation)

-Option462(ImpulseBandwidths)

-OptionH96(30Hz-lMHzResolutionBandwidths)

HP85662AIF-DisplaySectionswithserialnumberprefixesbelow24038arecoveredinboth

Volume3 oftheHP8566AOperatingandServiceManual(HPpartnumber08566-90006)and

Volume3 oftheHP85688OperatingandServiceManual(HPpartnumber08568-90012).

HowtheHP85662AIsUsed

-HP85662AIF-DisplaySectionisusedwith:

□HP85660BRFSectionastheHP8566BSpectrumAnalyzer

□HP85680BRFSectionastheHP8568BSpectrumAnalyzer.

■Option462isusedwith:

□HP85660BRFSectionastheHP8566BOption462SpectrumAnalyzer

□HP85680BRFSectionastheHP8568BOption462SpectrumAnalyzer

-Option067isusedwith:

□HP856708RFSectionastheHP85678SpectrumAnalyzer

-OptionH96isusedwith:

•I HP85680BOptionH96astheHP8568BOptionE96SpectrumAnalyzer

oHP85680BOptionH44astheHP8568BOptionE44SpectrumAnalyzer.

IF-DisplaySectionGeneralInformation1

ServiceSheets

Theservicesheetsinthismanualareorganizedinalpha-numericorderandareindexedwith

tabstomakeiteasytolocatea specificservicesheet.Eachoftheservicesheetscontainthe

followinginformation:

■CircuitDescription(wherepractical)

■TroubleshootingHints(wherepractical)

-ReplaceablePartsLists

■BlockDiagram(wherepractical)

-ComponentLocationIllustrations

-SchematicDiagrams

RepairProcedures

Repairproceduresareincludedforuseinremovingandreplacingassembliesforrepair.They

arelocatedinthefollowingsections:

■Front-PanelLEDReplacement

Tab:

AlAlKeyboard

■FrontPanelRemovalandRepair

Tab:

AlAlKeyboard

-CRTReplacement

Tab:

A1A3HighVoltageRegulator

■IF-DisplaySectionInternalFuseReplacement

Tab:

A1A6±15V RegulatorandHighVoltage

MajorAssemblyandComponentLocations

MajorassemblyandcomponentlocationillustrationsfortheIF-Sectionarelocatedattherear

ofthismanual.

Troubleshooting

TroubleshootinginformationfortheIF-Sectionisdividedintotwolevelsasfollows:

-SectionLevel

IFOverallBlockDiagrarn

AlDisplaySectionBlockDiagram

A3DigitalStorageTroubleshooting

A4IF-SectionTroubleshooting

-AssemblyLevel

Mostassemblieshavetroubleshootinghintsimmediatelyfollowingtheircircuit

descriptions.Troubleshootinginformationisalsolocatedonassembly-levelblock

diagrams,notes,andschematics.

2If-DisplaySectionGeneralInformation

AllassembliesareindexedbytabexceptfortheoneslistedinTable1 attheendofthis

section.Table1 liststheindextabswheretheseassembliescanbefound.

AssemblyLocations

IAssembly| TabLocationI

A1T1

A1V1

A1A11

A1A8Rectifier,BlockDiagram

GeneralPartsListing,Table6

A1A3HighVoltageRegulator,BlockDiagram

GeneralPartsListing,Table6

A1A3HighVoltageRegulator,BlockDiagram

GeneralPartsListing,Table4

NotAssigned

StorageandShipment

Environment

Theinstrumentmaybestoredorshippedinenvironmentswithinthefollowing limits:

Temperature-40°Ct

+75°C

Humidity

...............................................m\5%

t 0 90%at0°to40°C

Altitude.Upto15,240meters(50,000feet)

Theinstrumentshouldbeprotectedfromtemperatureextremeswhichmightcause

condensationwithintheinstrument.

OriginalPackaging

Itisrecommendedthattheoriginalfactorypackagingmaterialsberetainedforusewhen

shippingtheinstrument.Iforiginalpackagingmaterialcannotberetained,packaging

materialsidenticaltothoseusedinfactorypackagingareavailablethroughHewlett-Packard

offices.PartnumbersanddescriptionsofthepackagingmaterialsarelistedinFigure1.

Thecombinedweightofthetwoinstrumentsectionsisapproximately50kg(112lbs).

Becauseoftheweightinvolved,donotpackagetheinstrumentsectionsfastenedtogetheras

oneunit.Theinstrumentsectionsmustbeseparatedandpackagedinseparatecontainers.

ThequantityofpackagingmaterialsinFigure1 isforonlyoneinstrumentsection.

IftheinstrumentisbeingreturnedtoHewlett-Packardforservicing,attacha tagtoeach

cartonindicatingthetypeofservicerequired,returnaddress,modelnumber,andfullserial

number.Foryourconvenience,a supplyoftagsisincludedattheendofthissection.Also,

markeachcontainerFRAGILEtoassurecarefulhandling.Inanycorrespondence,refertothe

instrumentbymodelnumberandfullserialnumber.

OtherPackaging

Ifitisnecessarytousepackagingmaterialsotherthanthetypeusedinoriginalfactory

packaging,thefollowinggeneralinstructionsshouldbefollowed.

IF-DisplaySectionGeneralInformation3

Separatethetwoinstrumentsectionsandwrapeachinheavypaperorplastic.

Placetheinstrumentsectionsinseparatecontainerswith8 to10cm(3to4 inches)of

shock-absorbingmaterialaroundallsidestoprovidefirmcushioningandpreventmovement

insidethecontainer.Protectfrontpanelswithcardboard.Double-wallcorrugatedcartons

of125kg(275lb)burstingstrengtharesufficientforshippingcontainers.

Sealeachcontainersecurelyand,ifshippingtoa Hewlett-Packardofficeorservicecenter,

attacha tagtoeachcontainerindicatingthetypeofservicerequired,returnaddress,model

number,andfullserialnumber.Foryourconvenience,a supplyoftagsisincludedatthe

endofthissection.

MarkeachcontainerFRAGILEtoassurecarefulhandling.

ITEM QTY

HPPARTNO.

9211-4487

5180-2319

5180-2320

DESCRIPTION

OUTERBOX

INNERFOAMPAD

INNERBOX

Figure1.PackagingforShipmentUsingFactoryPackagingMaterials

4IF-DisplaySectionGeneralInformation

IFOverallBlockDiagram

Table1.A3DigitalStorageMnemonic

Table

Mnemonic Description Mnemonic Description

18.4MHZLO

[MHZ

21.4MHZ

3MHZ

ALOG

AO- All

AlOdB

A20dB

A2dB

A4dB

A.8dB

AJDRO

ADR3

kUX BLANK

<OJXZ

WdB

BLOG

BO- Bll

BLO- BL6

BLINK

BRIGHT

BWS

BW63

BW68

BW7

2HAR

3LK

18.4MHzLocalOscillatorSignal

1MHzADCClock

21.4MHzIFSignal

3MHzIFSignal

LogExpandControl

AccumulatorBusBits0 through11

AttenuationControls

InstrumentBusAddressBits0 through3

AuxiliaryBlankingOutput

AuxiliaryZ AxisOutput

AttenuationControl

LogExpandControl

DigitalStorageBusDataBits0 through11

BranchLengthBusBits0 through6

BlinkCRTDisplayControl

BrightCRTDisplayControl

BlockSwitchControl

BandwidthControls

MemoryChipEnable

CharacterModeDisplayControl

8MHzSystemClock

LDRMP

LDSR

LDX

LDY

LFSEN

LG10

LG20

LGCLK

LGX

LGY

LINCRSA

LINTG

LLGBLANK

LLL

LMEMEN

Log/LinearControl

LROMEN

LRSTO

LRTN

LRTRC

LT10

LTON

LTSTA

LTSTB

LWRITE

LZERO

MA0-MA11

LoadRampRegister

LOW= DigitalStorageReady

LoadX PositionRegister

LoadY PositionRegister

LOW= FastSweepEnable

LinearGainControls

200kHzLineGeneratorClock

LineGeneratorHorizontalSignal

LineGeneratorVerticalSignal

IncrementStrokeAddress

LOW= IntegratorControl

LongLine

LOW= LineGeneratorBlankingControl

LOW= LongLine

LOW= EnableMemoryOutput

LOW= SelectedQualifier

LOW= ROMEnable

LOW= ResetTriggerOccurred

LOW= EnableInterruptReturn

LOW= RetraceSignal

LOW=IF-DisplaySection1/0Strobe

LOW= TurnOn

LOW= InputTestA Data

LOW= InputTestB Data

MemoryWriteControl

OutputofZeroCheckonALUResult

MemoryAddressBusBits0 through11

IFOverallBlockDiagram

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