Panasonic NV-HV61GN Bedienungsanleitung

ORDERNO. MAV0404002C8

VideoCassette Recorder

NV-HV61GN/ NV-HV61EE / NV-HV61GCU / NV-HV61GH/ NV-

HV61GHT / NV-HV61PX

R4-MECHANISM

SPECIFICATIONS

1. INTRODUCTION

1.1. INTRODUCTION

Thisservice manual containstechnical information whichwill allowservice personnel to

understand and service thismodel.

Ifthecircuitischangedor modified, thisinformation will befollowedbysupplementaryservice

manual tobefiledwithoriginal service manual.

Note:

1. Adjustmentprocedures, DisassemblyProcedures and Assembly

Procedures forMechanismChassisareseparate volumefromthis

service manual.

Please refertotheservice manual forR4-MechanismChassis.

(OrderNo. VRD0202010C8)

2. TheModel No. isindicatedon theSchematicDiagramand Circuit

BoardDiagramsas follows.

Model No. Indication Mark

NV-HV61GN (A)

NV-HV61EE (B)

NV-HV61GCU (C)

NV-HV61GH/GHT (D)

NV-HV61PX (E)

1.2. ABOUTLEADFREE SOLDER(PbF)

Distinction ofPbF PCB:

PCBs(manufactured)using leadfree solderwill have aPbF stampon thePCB.

Caution:

-Pbfree solderhas ahighermelting pointthanstandardsolder,

Typicallythemelting pointis50-70°F(30-40°C)higher. Please use

ahigh temperaturesoldering iron. Incase ofsoldering iron with

temperaturecontrol,please set itto700±20°F(370±10°C)

-Pbfree solderwill tend tosplashwhenheatedtoo high (about

1100°F/600°C).

Whensoldering or unsoldering, please completelyremove all ofthesolderon thepinsor solder

area, and besuretoheatthesoldering pointswiththePbfree solderuntil itmeltsenough.

2. GENERALDESCRIPTIONS

2.1. SERVICECAUTION-1

WhentheMicroprocessor IC6001 and/or Back-up batteryB7751 arereplaced, readthefollowing

procedurecarefullyand proceedit.

[REASONS]

ThereisaRAMintheIC6001, whichisbacking up:

1. ProgrammeNavigation Data [See NOTE1]

2. TVTuning Data

3. PG ShifterAdjustmentData

4. Option Setting Data

WhenIC6001 arereplaced, all above listeddatabecomenotavailable.

These dataisbackedup byusing thepowersource of:

*ACConnected:ACPowersource

*ACDisconnected:Back-up Battery(B7751)&Back-up Capacitor (C7752)

[NOTE1]

Asfor your reference, withoutinserting atapeintoaVCR, you canconfirm thattheNAVIdata

thatisback up withIC6001 as showninthefollowing steps.

1. Indicate the"NAVI"markon theFrontInformation Panel. (Press

theMenu button and select theoption, thenset the"NAVI"toON

mode.)

2. Turnon theService Modeand press the"NAVI"button on the

Remote Controllerinmorethan5seconds. The"NAVI"data list is

displayedon theMonitor. (Press the"MENU"button on the

Remote Controllerforcancellation.)

Although storedNAVIdatacanbeconfirmedon themonitor, thereisno way totransfertheNAVI

datatoIC6001whichisnewlymounted.

2.1.1. REPLACINGPROCEDURE [IC6001]

[1.PREPARATION]

Beforereplacing IC6001:

1. Take note that storedTVbroadcast channels. (Because, its user

maystoreTVbroadcasts bymanuallyotherthan"AutoTuning"

operation and itisalsoerased.)

NOTE:

During servicing, do notmake ashortcircuitbetweenIC6001-pin37 (5V)withotherline/

Componentsotherwise IC6001 may bebroken.

CAUTION:

*Whenreplacing theB7751, besuretoread/follow the"HOWTO

REPLACETHELITHIUMBATTERY"section.

[2.REPLACINGPROCEDURE INSTEPS]

STEP1.PREPARATION

1. Disconnect theACplug beforeremoving theC.B.A. with

Mechanismunitbyreferring totheDisassemblyprocedure.

STEP2.REPLACE THE IC6001

1. Replace theIC6001. (Donotmake ashortcircuitbetweenIC6001-

pin37 and otherpins/Components.)

STEP3.RESETTHE IC6001 ATONCE

1. Connect theACplug.

2. Connect ajumperwirebetweenTL7510 (RESET)and TL7509

(GND)forasecond toreset theMicroprocessorIC6001.

Note:

Since theresistance atpin2as well as pin3ofIC6001 decides themodel distinction data, there

isno needtosetup theModel code, whichisnecessaryinthepreviousmodels.

STEP4.LINE-INSETTING&ACTIVATE PLUG-INA.T.P.

1. Press theChannel up and downkeyssimultaneouslyformore

than3seconds, underthecondition oftheno tapeisintheunit.

2. Confirm that "A1"and "A2"canbedisplayedon theFIPby

pressing theCH UPand CH DOWNbuttons.

NOTE:

If"DIRECTREC" on theOPTIONsetting screenissetto[ON], theinputsignal isfixedto"A1",

and theChannel up and downkeys arenoteffective.

3. Disconnect theACplug forfew secondsand connect itagain, and

press POWERbutton forturning thepowertoon fromoff tocarry

outthe"Plug inAutoTunerPreset".

4. Since otherthanthechannelsthat canbestoredby"AutoTuning"

operation arenotavailableyet, preset manuallybyconsulting the

note ofits availableTVchannelsofwhichyou tookbefore.

NOTE:

TheFactoryshipping condition ofOSDsetting isnotrestoredbyabove operation.

5. ChangetheOSDsetting totheFactoryshipping condition if

necessary, byreferring toOption Setting on theOperating

Instructionsas showninthefollowing chart.

STEP5.TAPE INTERCHANGEABILITYADJUSTMENT

RefertotheElectrical AdjustmentProcedures.

2.2. CAUTIONFORACMAINSLEAD(NV-HV61GH/ GHT)

2.3. HOWTO REPLACETHELITHIUMBATTERY

2.3.1. GENERALDESCRIPTION

ThereisaRAMintheIC6001, whichisbacking up thefollowing databyusing thepowersource

ofB7751 (Back-up Battery)and C7752 (Back-up Capacitor:Back-up timeisapproximately30

minutes).

1. ProgrammeNavigation Data

2. TVTuning Data

3. PG ShifterAdjustmentData

4. Option Setting Data

2.3.2. REPLACEMENTPROCEDURE

NOTE:

Thisworkshouldbefinishedwithin30 minutes sothattheRAMdatawouldnotbelostas

running outofcurrentfrom theBack-up Capacitor C7752.

1. RemovetheTop Panel and MechanismunitwithMainC.B.Aby

referring totheDisassembling Procedure.

2. UnsoldertheLithiumBattery:B7751 and thenreplace itwithanew

one(See Fig. B1).

Fig. B1

NOTE:

Thelithium batteryisacritical component(ManufacturedbyPanasonic.)

Itmustneverbesubjectedtoexcessive heator discharge.

Itmustthereforeonlybefittedinequipmentdesignedspecificallyfor itsuse.

Replacementbatteries mustbeofthesametypeand manufacture.

They mustbefittedinthesamemannerand location as theoriginal battery, withthecorrect

polaritycontactsobserved.

Donotattempttore-chargethebatteryor re-use itfor anyotherpurpose.

Itshouldbedisposedofinwasteproductsdestinedfor burial ratherthanincineration.

2.4. SERVICECAUTION-2

2.4.1. CAUTIONFORAUTOTUNING

PROCEDURE

AutoTuning will startbythefollowing procedure.

1. Connect theDIN-RFCable.

2. Connect theACMainsLead.

3. Turnon theVCR.

AutoTuning will start.

AutoTuning searchforTVstationsfromVHSminimumtoUHF

maximumand memorizes everytunedprogramposition. Other

programpositionsareskipped.

AutoTuning takes fiveormoreminutes tocomplete its search.

DonottouchtheVCR during AutoTuning.

AutoTuning will stop halfway, iftheVCR isoperatedortheaerial

leadand/orthemainsleadaredisconnected.

Incase theVCR stoppedduring AutoTuning, theVCR has tobe

reset and restarted. See thefollowing item2.

NOTE:

1. IftheVCR isturnedon withtheantennanotconnected, all

channelsareskipped. Therefore, firmlyconnect theantennaand

thenturntheVCR off and on againtoexecute Autotuning.

2. WhenAutoTuning iscanceledhalfway, AutoTuning isnotexecute

eveniftheVCR isturnedoff and thenturnedon again,

Inthiscase, AutoTuning has toberestartedbythefollowing

procedures.

A. Press EJECTand removetheVideocassette.

B. KeepUPand DOWNon theVCR pressedsimultaneouslyfor3

secondsormoreduring theVCR on.

Thechannel displayedon theVCR displaydisappearsfor

momentthenchanges to2.

C. Turnoff theVCR and thenturniton. AutoTuning commences.

3. Ifyou turntheVCR off during AutoTuning, AutoTuning will stop

halfway.

TheVCR shouldbereset and restartedbytheitem2inorderto

execute AutoTuning.

4. IftheVCR starts playback during AutoTuning, AutoTuning will

stop halfway.

TheVCR shouldbereset and restartedbytheitem2inorderto

execute AutoTuning.

5. To cancel AutoTuning Mid-operation, press POWERDuring Auto

Tuning (TheVCR isturnedoff).

6. WhentheVCR ismovedtotheotherarea orcountry, TV

broadcasts shouldbestoredagain.

2.4.2. CHECKINGOFMAINC.B.A.

Whenservicing theMAINC.B.A., take outtheMAINC.B.A. and mechanism from theframe. Turn

theMAINC.B.A. overas shownin Fig. S1.

Fig. S1

2.4.3. REMOVALOFCASSETTE TAPE

Whenthecassettetapecouldnotbeuninstalledfrom anelectrical malfunction, Thereare2ways

toremove acassettetape.

1. Removal bycompulsoryunloading.

A. Press FF and EJECTbutton simultaneouslyformorethan3

secondsand set theService Modeto7.

B. Press STOPbutton inordertounloadthemechanism. (Pay

attention totapeslack)

Service ModeIndication:

7** ** (STOP)70L** (EJECT)

2. Removal bymanual operation byrotating theLoading Motorwith

thebatteries.

A. Disconnect theACplug, and removetheTop Panel and the

FrontPanel byreferring totheDisassemblyProcedures.

B. Connect three batteries (1.5Vspec.)totheLoading Motorin

series forsupplying 4.5Vtorotate theLoading Motoras shown

in Fig. S2.Fig. S2

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