Panasonic NV-SV120EF User manual

ORDERNO. MABR0304008C2

VideoCassette Recorder

NV-SV120EF

Z-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:

Adjustmentprocedures, DisassemblyProcedures and AssemblyProcedures for Mechanism

Chassisareseparatevolumefrom thisservice manual. / Please refertotheservice manual for Z-

Mechanism Chassis. (OrderNo. VRD9802005C2)

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

2.1.1. REPLACINGIC6002/EEPROM

WhentheEEPROM:IC6002 isreplaced, applicablemodel code, option codeand electrical

adjustmentdatawill notbeavailable.

Therefore, enterand/or adjustthenecessarydataafterreplacing IC6002 byreferring following

procedure.

STEP1.REPLACE THE IC6002

1. RemovetheC.B.A. withMechanismunitbyreferring the

Disassemblyprocedure.

2. Disconnect theACplug and replace theIC6002.

STEP2.INPUTTHE MODEL&OPTIONCODE

1. Set up theapplicablemodel codeand option codebyordering the

following table.

PROCEDURE F.I.P. DISPLAY

Turn on theService Mode

1.Press theFF key and the

EJECTkey simultaneouslyfor

morethan3seconds.

ActivatetheService Mode2

2.Whilekeepplacing FF key,

press theEJECTkey intwice.

ActivatetheEntering Mode.

3.Press theEJECTkey for more

than3seconds.

SettheMode2.

4.Press theCH UP key intwice.

Display theSetting Code.

5.Press thePOWERkey toturn

thepoweron.

(Colon starts

flashing)

EntertheModel and Option Code.

6.Service Screenisdisplayedon themonitor.

7.SettheapplicableModel and Option codeby

using REW, PLAY, STOP and FF keys on theRemote

Controller. (See Fig.S1&S2)

Exitfrom Service Mode.

8.Press thePOWERkey toturn

thepoweroff.

9. Press FF and EJECTkeys

simultaneouslyin6times.

(Normal

Indication)

Fig.S1Service Screen(sample)

Model No. MC OC1 OC2

NV-SV120EF 65h 74h 7Ch

Fig. S2Model Code&Option Code

NOTE:

Since all electrical adjustmentsdataisstill notavailable, perform theElectrical Adjustment

continuously.

2.1.2. CYLINDERUNITREPLACEMENT

1. CYLINDERUNITREPLACEMENT

A. RemovethemechanismunitfromMAINC.B.A./Chassisby

referring “SECTION2. DisassemblyProcedure”.

B. Removethe3screws(A)oftheCYLINDERUNITwithascrew

driver.

C. Unlock the4locking tabs(B)and disconnect theCylinder

flexiblecardfromtheFPCHolder.

D. RemovetheCYLINDERUNIT.

CAUTION:

HandletheCylinderflexiblecardwithcare. Whenitdamaged, you

shouldreplace wholeCylinderunit.

Fig. S3

2. UPPERCYLINDERDISASSEMBLY

A. Remove2screws(A).

B. RemovetheCylinderStatorUnit.

C. Remove2screws(B).

D. RemovetheCylinderRotorUnit.

E. Loose Hex screw (C)(1.5mm)and removetheCYLINDER

RETAINER.

F. RemovetheUpperCylinder. Fig. S4

3. UPPERCYLINDERASSEMBLY

Whenreassembling, perform thestepsinthereverse order.

Notes:

1. Install theCylinderRetainersothat the2holes on top ofthe

CylinderRetainerareat rightangles withtheP5001 Connection.

2. TightentheHex screw (C)(1.5mm)whilepressing downon top of

theCylinderRetainer. Fig. S5

3. Install theCylinderRotorUnitsothat theinnerholeoftheCylinder

RotorUnitfits tothesmall projection (D)on top oftheUpper

Cylinder.

4. Tighten2screws(B). Fig. S6

5. install theCylinderStatorUnit.

6. Tighten2screws(A). Fig. S7

7. Confirm thePG SHIFTERADJUSTMENTwiththealignmenttape

(PAL:VFJ8125H3F)and adjust itifnecessary.

2.1.3. CHECKINGOFMAINC.B.A.

Whenservicing theMAINC.B.A., take outtheMAINC.B.A. and mechanism from theframeand

turn over.

Fig. S8

2.1.4. FLATCARD CABLE INSTALLATION

Wheninstalling theFlatCard Cableon theconnector, install theFlatCard Cablewiththecable

contactsfacing theconnector contacts.

Fig. S9

2.2. REMOVALOFCASSETTETAPE

Thereare2ways toremove acassettetape.

1. Service Information DisplayOperation

A. Press theFF and EJECTkeyssimultaneoslyfor3secondsand

set theService Mode7.

B. Press STOPkeyinordertorotate theLoading Motorfor

unloading operation. (Payanattention oftapeslack)

2. Manual Operation

A. Disconnect theACMainsLeadand removetheTop Panel.

B. Rotate theMainCamGearclockwise until theLoading Posts

movetofullyunloadedposition as shownin Fig. S10 . (Tapeis

remaining) Fig. S10

C. Rotate theCapstanMotorclockwise fromthebottomsideto

take up thetape. Fig. S11

D. Rotate theMainCamGearclockwise until thecassette tapeis

ejected.

2.3. INTRODUCTIONOFVIDEO HEADCLEANING CASSETTE/

(POLISHING TYPE)

1. Wearepleasedtointroduce PanasonicVideoHeadCleaning

Cassette, VFK0923FT [forservice purposes] and VFK0923FSE [for

end users] forall VHS/SVHSVCPand VCR.

2. These cleaning cassettes areexclusiveremoving thehardand

stickyclogging on videoheads.

3. These improvetheefficiencyofvideoheadcleaning service and

shortening cleaning timeforend users.

VFK0923FT

(For Service usage)

TypeofCassette Full VHS Cassette

Cleaning Time 10 Seconds/Time

TapeLength 20 m

UsabilityinaPath 180 Times

VFK0823FSE

(For end users)

TypeofCassette Full VHS Cassette

Cleaning Time 10 Seconds/Time

TapeLength 3.34 m

UsabilityinaPath 30 Times

Note:

Thetapematerial itselfisthesameinbothtypes.

2.4. SELF-DIAGNOSISRESULT DISPLAY

The"SELF-DIAGNOSIS RESULTDISPLAY&MEMORYfunction isbuiltinthisVTR.

ItmeansthatwhentheVCR detectsundesirablecondition, itcanbedisplayeda“Error code

(Twonumbersfrom theright)”withService Mode2.

Since the"Error code" isstoredintheEEPROM, itcanbedisplayedalthough afterdisconnected

theACleads. ItcanbedisplayedwithService Mode2.

(Ifasecond error hadbeendetected, onlythemostrecenterror isdisplayed. )

For moredetails, refertotheService Manual for Z-Mechanism ChassisOrdernumber

VRD9802005C2.

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