Panasonic PV-L452 User manual

ORDERNO. MKE0112200C1
B15 (U.S.A.), B4(PUERTO RICO)
Compact VHSCamcorder
PV-L452 / PV-L652
SPECIFICATIONS

1. SAFETYPRECAUTIONS
GENERALGUIDELINES
1. IMPORTANTSAFETYNOTICE
Therearespecial components usedinthisequipmentwhichare
importantforsafety. These parts aremarkedbyinthe
SchematicDiagrams, CircuitBoardLayout, ExplodedViewsand
ReplacementParts List. Itisessential that these critical parts
shouldbereplacedwithmanufacturer'sspecifiedparts toprevent
X-RADIATION, shock, fire, orotherhazards. Donotmodifythe
original design withoutpermission ofmanufacturer.
2. AnIsolation Transformershouldalwaysbeusedduring the
servicing ofACAdaptorwhose chassisisnotisolatedfromtheAC
powerline. Use atransformerofadequate powerrating as this
protects thetechnicianfromaccidents resulting inpersonal injury
fromelectrical shocks. Itwill alsoprotect ACAdaptorfrombeing
damagedbyaccidental 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.
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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. Incase ameasurementisoutsideofthelimits specified, there
isapossibilityofashock hazard, and theequipmentshouldbe
repairedand recheckedbeforeitisreturnedtothecustomer.
Figure. 1
2. PREVENTIONOFELECTRO STATICDISCHARGE
(ESD) TO ELECTROSTATICALLYSENSITIVE (ES)
DEVICES
Somesemiconductor (solidstate)devices canbedamagedeasilybystaticelectricity. Such
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componentscommonlyarecalledElectrostaticallySensitive (ES)Devices. Examples oftypical
ES devices areintegratedcircuitsand somefield-effecttransistorsand semiconductor "chip"
components. Thefollowing techniques shouldbeusedtohelpreduce theincidence of
componentdamagecausedbyelectro staticdischarge(ESD).
1. Immediatelybeforehandling anysemiconductorcomponentor
semiconductor-equippedassembly, drainoff anyESDon your
bodybytouching aknownearthground. Alternatively, obtainand
wearacommerciallyavailabledischarging ESDwrist strap, which
shouldberemovedforpotential 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 observe
all othersafetyprecautions.
8. Minimizebodilymotionswhenhandling unpackagedreplacement
ES devices. (Otherwise harmless motion suchas thebrushing
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togetherofyourclothes fabricorthelifting ofyourfootfroma
carpetedfloorcangenerate staticelectricity(ESD)sufficientto
damageanES device).
3. OPERATIONGUIDE
4. SERVICE NOTES (PLEASE READ)
4.1. SERVICENOTES
4.1.1. EXTENSIONCABLES FORSERVICE
NOTE:
1. Whenusing thecassette tape:
A. Besuretoremoveacassette lidcoverofcassette tape.
B. Besuretoinstall theLock Screw toCassette UpUnit. After
servicing, besuretoremovetheLock Screw.
Referto"HOW TO HOLD THE CASSETTE UP UNIT IN THE
DOWN POSITION WITHOUT CASSETTE COVER INSTALLED."
C. Select theH. SAFETYDEFEATinSERVICEMODE. Referto"
SERVICE MODE SPECIFICATION (SELF-DIAGNOSTIC SYSTEM) .
"
Or, connect asilicon diodeon componentsideoftheMain
C.B.A. as showntodefeat safetyfunction.
(Since Takeup Reel sensor, locatedon MainC.B.A. does not
workwhenopening MainC.B.A., themechanismdoes notwork
(Reel lock). Therefore, make suretodefeat Safetyfunction.)
2. Use extremecaresoas nottoapplyanyexcessivepressuretothe
Cylinder/HeadAmpF.P.C. Afterservicing, besuretoplace it
correctly. Referto"Cylinder Unit"in"MECHANISMSECTION."
3. TheLCD open/close SW. isforchanging betweenLCD Displayor
EVFDisplay. Whenturning on LCD Display, place somepaperor
tape, etc. on LCD open/close SW. sothat thisSW. staysON.
4. Whenservicing, avoidcausing afromtouching thecomponent
sideoftheBatteryCatcherUnittotheMainC.B.A.
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5. Whenservicing withtheMainC.B.A. installedon theVCR
MechanismChassisAss'y(MainC.B.A. inraisedposition), tighten
2Screwsforstability.
6. Use agroundedESDwrist strapwhiledisassembling theLens
portion.
7. Use extremecarewhenunplugging orplugging inconnectors.
Fig. 1
4.1.2. HOWTOHOLDTHE CASSETTE UP UNITINTHE DOWNPOSITION
WITHOUTCASSETTE COVERINSTALLED
TheCassetteUpUnitwill beintheup position withouttheCassetteCoverinstalled.
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ToholdtheCassetteUpUnitinthedownposition withoutit, aLock Screwisneeded.
4.1.2.1. Howtoinstall theLock Screw:
1. IftheLock Lever, showningray, isset toPosition "A"(Nohole),
changePosition "A"(Nohole) toPosition "B"(Hole) as shownin
Fig. 2-2 bypushing Portion (a) as showninFig. 2-1.
Note:
IfthemechanismisinEJECTposition, theLock Levercannotbe
changedtoPosition "B"bypushing Portion (a). Inthiscase, apply
powertoset themechanismtoSTOPposition.
Fig. 2-1
Fig. 2-2
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2. Install theLock Screw intheHole(ThreadedHoleforLock Screw
access) inPosition "B".
3. HolddowntheCassette UpUnitand confirm that theCassette Up
Unitwill stayinthedownposition.
Note:
IftheCassette UpUnitwill notstayinthedownposition, slidethe
Lock Levertotherightslightly.
4.1.2.2. Lock Screwisrequiredwhen:
1. performing "TAPE INTERCHANGEABILITYADJUSTMENT."
2. servicing withcassette tapeinService Position. Theprocedure
below isrequiredwhentheunitisinsafetydefeat mode.
A. Confirm that theLock Lever, showningray, isset toPosition
"A"as showninFig. 2-1, and that themechanismisintheSTOP
position.
B. Insertthecassette tape.
C. PushPortion (a) as showninFig. 2-1 whilekeeping the
Cassette UpUnitinthedownposition sothemechanismstarts
loading. (Cassette DownSwitchisON.)
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4.1.3. SERVICE MODE SPECIFICATION(SELF-DIAGNOSTICSYSTEM)
Operation:
1. Start-up:Press and holdall oftheDisplay, REC, and Stop buttons
over2seconds, theunitgoes intotheself- diagnosticmodeand
mainmenu appears.
2. ModeSelection:Press displaybutton tochangeand select self-
diagnose mode.
3. Close:Turnoff thePowerSwitch.
Display:Following descriptionscanbedisplayedon EVFand TV
monitorat thesametime.
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