Panasonic Omnivision PV-V4600 Bedienungsanleitung

ORDERNO. MKE0001002C1

VideoCassette Recorder

PV-V4600 / PV-V4620 / PV-V4620-K/ PV-V4630-K/ PV-V4640

/ PV-V4640-K/ PV-V4660

SPECIFICATIONS

1. SAFETYPRECAUTIONS

GENERALGUIDELINES

1. IMPORTANTSAFETYNOTICE

Therearespecial components usedinthisequipmentwhichare

importantforsafety. These parts aremarkedby intheSchematic

Diagrams, CircuitBoardLayout, ExplodedViewsand Replacement

Parts List. Itisessential that these critical parts shouldbe

replacedwithmanufacturer'sspecifiedparts topreventshock, fire

orotherhazards. Donotmodifytheoriginal design without

permissionofmanufacturer.

2. AnIsolation Transformershouldalwaysbeusedduring the

servicing ofVCR whose chassisisnotisolatedfromtheACpower

line. Use atransformerofadequate powerrating as thisprotects

thetechnicianfromaccidents resulting inpersonal injuryfrom

electrical shocks. Itwill alsoprotect VCR frombeing damagedby

accidental shorting that mayoccurduring servicing.

3. Whenservicing, observetheoriginal leaddress. Ifashortcircuit

isfound, replace all parts whichhavebeenoverheatedor

damagedbytheshortcircuit.

4. Afterservicing, see toitthat all theprotectivedevices suchas

insulation barriers, insulation papersshieldsareproperlyinstalled.

5. Afterservicing, make thefollowing leakagecurrentchecks to

preventthecustomerfrombeing exposedtoshock hazards.

LEAKAGE CURRENTCOLDCHECK

1. Unplug theACcordand connect ajumperbetweenthetwoprongs

on theplug.

2. Measuretheresistance value, withanohmmeter, betweenthe

jumperedACplug and eachexposedmetalliccabinet parton the

equipmentsuchas screwheads, connectors, control shafts, etc.

Whentheexposedmetallicparthas areturnpathtothechassis,

thereading shouldbebetween1M and 5.2M . Whenthe

exposedmetal does nothaveareturnpathtothechassis, the

reading must beinfinity.

LEAKAGE CURRENTHOTCHECK

(See figure1.)

1. Plug theACcorddirectlyintotheACoutlet. Donotuse an

isolation transformerforthischeck.

2. Connect a1.5k , 10 Wresistor, inparallel witha0.15 F

capacitor, betweeneachexposedmetallicparton theset and a

good earthground, as showninfigure1.

3. Use anACvoltmeter, with1k /Vormoresensitivity, tomeasure

thepotential across theresistor.

4. Check eachexposedmetallicpart, and measurethevoltageat

eachpoint.

5. Reverse theACplug intheACoutlet and repeat eachoftheabove

measurements.

6. Thepotential at anypointshouldnotexceed0.75 VRMS. A

leakagecurrenttester(Simpson Model 229 orequivalent) maybe

usedtomake thehotchecks. Leakagecurrentmust notexceed1/2

mA. Incasea measurementisoutsideofthelimits specified, there

isapossibilityofashock hazard, and theequipmentshouldbe

repairedand recheckedbeforeitisreturnedtothecustomer.

Figure1

2. PREVENTIONOFELECTRO-STATICDISCHARGE

(ESD) TO ELECTROSTATICALLYSENSITIVE (ES)

DEVICES

Somesemiconductor (solidstate)devices canbedamagedeasilybystaticelectricity. Such

componentscommonlyarecalledElectrostaticallySensitive (ES)Devices. Examples oftypical

ES devices areintegratedcircuits, somefield-effecttransistorsand semiconductor "chip"

components. Thefollowing techniques shouldbeusedtohelpreduce theincidence of

componentdamagecausedbyelectrostaticdischarge(ESD).

1. Immediatelybeforehandling anysemiconductorcomponentor

semiconductor-equippedassembly, drainoff anyESDon your

bodybytouching aknownearthground. Alternatively, obtain

andwearacommerciallyavailabledischarging ESDwrist strap,

whichshouldremoveelectrostaticchargeforpotential shock

reasonspriortoapplying powertotheunitundertest.

2. Afterremoving anelectrical assemblyequippedwithES devices,

place theassemblyon aconductivesurface suchas aluminum

foil, topreventelectrostaticchargebuildup orexposureofthe

assembly.

3. Use onlyagrounded-tipsoldering iron tosolderorunsolderES

devices.

4. Use onlyanantistaticsolderremoval device. Somesolderremoval

devices notclassifiedas "antistatic(ESDprotected)"cangenerate

electrical chargesufficienttodamageES devices.

5. Donotuse freon-propelledchemicals. These cangenerate

electrical charges sufficienttodamageES devices.

6. DonotremoveareplacementES device fromits protective

packageuntil immediatelybeforeyou arereadytoinstall it. (Most

replacementES devices arepackagedwithleadselectrically

shortedtogetherbyconductivefoam, aluminumfoil orcomparable

conductivematerial).

7. Immediatelybeforeremoving theprotectivematerial fromthe

leadsofareplacementES device, touchtheprotectivematerial to

thechassisorcircuitassemblyintowhichthedevice will be

installed.

CAUTION:Besureno powerisappliedtothechassisorcircuit,

and observeall othersafetyprecautions.

8. Minimizebodilymotionswhenhandling unpackagedreplacement

ES devices. (Otherwise harmless motion suchas thebrushing

togetherofyourclothes fabricorthelifting ofyourfootfroma

carpetedfloorcangenerate staticelectricity(ESD)sufficientto

damageanES device).

"NOTE toCATV system installer:

Thisreminderisprovidedtocall theCATV system installer's attention toArticle820-22 ofthe

NECthatprovides guidelines for propergrounding and, inparticular, specifies thatthecable

ground shall beconnectedtothegrounding system ofthebuilding, as close tothepointofcable

entryas practical."

3. OPERATIONGUIDE

4. SERVICE NOTES (PLEASE READ)

4.1. SERVICENOTES

4.1.1. SIMPLIFIEDFAULT FINDINGDATA

SimplifiedSelf-DiagnosticSystem facilitates finding thecause ofthefault. A4digitfaultcodewill

bedisplayedinF.I.P.

TheSimplifiedFaultfinding dataisstoredintheMemoryIC(IC6005). Thisdataisclearedafterit

isdisplayed, and thenthePOWERbutton ispressedback on.

1. Withpowerturnedoff, press VCR/TVbutton on VCR (forover3

secondsifVCR isnotinshutoff condition).

Fig. 1-1

2. Faultcode(4 digitnumber)will bedisplayedinF.I.P. as shown.

Fig. 1-2

Fig. 1-3

Fig. 1-4

Fig. 1-5

Fig. 1-6

3. Whilepressing VCR/TVbutton on VCR withpowerturnedoff,

press anyoperation button on eitherVCR, orremote todetect that

akeyhas beenpressed.

The1st digitchanges to"0"onlywhenkeyisdetected.

Fig. 1-7

4. When1to4listedinLock codeoccurs, Lock data will bestored

intoEEPROMIC(Currentdata, Last Lock data, and theLast Lock

data beforelast). Lock data displayedinF.I.P. will bechangedby

pressingCH DOWNbutton.

Fig. 1-8

Note:

1. Lock data will bekeptafterACCordisunplugged.

2. When1to4listedinLock codeoccurs, theVCR goes intoVCR

shut-off condition. VCR stopsand all VCR function buttonsexcept

forpowerbecomenon-operational.

4.1.2. USAGE SCREENMODE

Thisfunction displays theTotal lapsedtimewithpoweron (day)and theTotal lapsedtimewith

Cylinderrotation (hour)on theTV monitor.

1. Withpowerturnedon withoutacassette, press VCR/TVbutton on

VCR and 7keyon remote together.

TheUSAGESCREENwill bedisplayedon theTVMonitor.

Fig. 1-9

Note:

Afterreplacing theCylinderUnit, press COUNTERRESETbutton

on remote inthismode. OnlyTotal lapsedtimewithCylinder

rotation (hour)will beclearedto0.

2. To release fromUsageScreenMode, press anyoperation button

on VCR inthismode. VCR will returntonormal operation mode.

4.1.3. EEPROMIC(IC6005), MAINC.B.A. REPLACEMENTNOTE

Afterreplacing EEPROMIC(IC6005)or MainC.B.A., besuretoperform the"PG SHIFTER

ADJUSTMENT" inELECTRICALADJUSTMENTprocedures.

4.1.4. SERVICE POSITION

4.1.4.1. Service Position

CAUTION:

HOTCIRCUIT(Primarycircuit) exists on theMainC.B.A.

Use extremecaretopreventaccidental shock whenservicing.

4.1.4.1.1. Service Position (1)

Fig. 2-1

4.1.4.1.2. Service Position (2)

Fig. 2-2

Note:

1. Alternativemethod inService Position (2)

2piledVHSCassette Tapes canbesubstitutedfortheFrameas

showninFig. 2-2.

2. Whenrecording inService Position (2), shorttheS-TabSW. Pins

on foil sideofMainC.B.A. toturnthisSW. on.

Fig. 2-3

3. Place thetapebetweentheCassette UpAss'yand MainC.B.A. to

get astability.

4. Whendisassembling/assembling, referto"CABINET SECTION"in

DISASSEMBLY/ASSEMBLYPROCEDURES.

4.1.5. HOTCIRCUIT

Primarycircuitexistson theMainC.B.A.

Thiscircuitisidentifiedas " HOT" on theC.B.A. and intheService Manual. Use extremecareto

preventaccidental shock whenservicing.

4.1.6. SERVICE MODE

Inordertoinhibitdetection oftheSupply&Takeup PhotoTransistors, Reel Sensor, and Cylinder

Lock, press and holdVCR/TV button and CH DOWNbuttonson VCR togetherover5secondsin

poweroff condition.

Fig. 3-1

Thepowercomes on and theunitgoes intoservice mode.

Inthismode, Mechanism movementcanbeconfirmed. Whenremoving CassetteUpAss'y, itcan

beconfirmedwithoutacassette.

Torelease from thismode, press POWERbutton off or disconnectACPlug.

4.1.7. TRACKINGCENTERMODE (TRACKINGFIX ATCENTER)

InserttheCassettetape. SettheunitintoService Mode. Play back theCassettetape. Press PLAY

button inPlay back mode. "TRACKINGCENTER" will bedisplayedon theTV monitor. Inthis

mode, thetracking isfixedatcenter. (Autotracking and manual tracking functionsarenot

operational.)

Fig. 3-2

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