Panasonic OmniVision PV-QV200 User manual

ORDERNO. MKE0001000C1
B3
VideoCassette Recorder
PVQ-V200 / PV-V4020 / VHQ-400 / VHQ-40M/ PV-V4520 / PV-
V4540
SPECIFICATIONS
2000 Matsushita-Kotobuki Electronics Industries LTD. All rights
reserved. Unauthorizedcopying and distribution isaviolation of
law.
1. SAFETY PRECAUTIONS
GENERALGUIDELINES
1. IMPORTANTSAFETY NOTICE

Therearespecial components usedinthisequipmentwhichare
importantfor safety. These parts aremarkedby inthe
SchematicDiagrams, CircuitBoardLayout, ExplodedViewsand
ReplacementParts List. Itisessential that these critical parts
shouldbereplacedwithmanufacturer's specifiedparts toprevent
shock, fireor otherhazards. Donotmodifytheoriginal design
withoutpermissionofmanufacturer.
2. AnIsolation Transformershouldalwaysbeusedduring the
servicing ofVCR whose chassisisnotisolatedfrom theAC
powerline. Use atransformerofadequate powerrating as this
protects thetechnicianfromaccidents resulting inpersonal injury
from electrical shocks. Itwill alsoprotect VCR from being
damagedbyaccidental shorting that mayoccur during servicing.
3. Whenservicing, observetheoriginal leaddress. Ifashortcircuit
isfound, replace all parts whichhavebeenoverheatedor
damagedbytheshortcircuit.
4. Afterservicing, see toitthat all theprotectivedevices suchas
insulation barriers, insulation papersshieldsareproperly
installed.
5. Afterservicing, make thefollowing leakagecurrentchecks to
preventthecustomerfrom being exposedtoshock hazards.
LEAKAGECURRENTCOLD CHECK
1. Unplug theACcord and connect ajumperbetweenthetwo
prongson theplug.
2. Measuretheresistance value, withanohmmeter, betweenthe
jumperedACplug and eachexposedmetalliccabinet parton the
equipmentsuchas screwheads, connectors, control shafts, etc.
Whentheexposedmetallicparthas areturn pathtothechassis,
thereading shouldbebetween1M and 5.2M . Whenthe
exposedmetal does nothaveareturn pathtothechassis, the
reading must beinfinity.
LEAKAGECURRENTHOTCHECK
(See figure 1.)
1. Plug theACcord directlyintotheACoutlet. Donotuse an
isolation transformerfor thischeck.

2. Connect a1.5k , 10 Wresistor, inparallel witha0.15 F
capacitor, betweeneachexposedmetallicparton theset and a
good earthground, as showninfigure1.
3. Use anACvoltmeter, with1k /V or moresensitivity, tomeasure
thepotential across theresistor.
4. Check eachexposedmetallicpart, and measurethevoltageat
eachpoint.
5. Reverse theACplug intheACoutlet and repeat eachoftheabove
measurements.
6. Thepotential at anypointshouldnotexceed0.75 V RMS. A
leakagecurrenttester(Simpson Model 229 or equivalent) maybe
usedtomake thehotchecks. Leakagecurrentmust notexceed1/
2mA. Incasea measurementisoutsideofthelimits specified,
thereisapossibilityofashock hazard, and theequipmentshould
berepairedand recheckedbeforeitisreturnedtothecustomer.
Figure 1
2. PREVENTIONOF ELECTRO-STATICDISCHARGE
(ESD) TO ELECTROSTATICALLY SENSITIVE (ES)
DEVICES
Some semiconductor(solidstate)devices canbe damagedeasilybystatic electricity. Such
components commonlyare calledElectrostaticallySensitive (ES)Devices. Examples of typical
ES devices are integratedcircuits, some field-effecttransistors and semiconductor"chip"
components. The following techniques shouldbe usedto helpreduce the incidence of
component damage causedbyelectrostatic discharge (ESD).
1. Immediatelybeforehandling anysemiconductor componentor
semiconductor-equippedassembly, drainoff anyESDon your
bodybytouching aknownearthground. Alternatively, obtain
andwearacommerciallyavailabledischarging ESDwrist strap,
whichshouldremoveelectrostaticchargefor potential shock

reasonsprior toapplying powertotheunitundertest.
2. Afterremoving anelectrical assemblyequippedwithES devices,
place theassemblyon aconductivesurface suchas aluminum
foil, topreventelectrostaticchargebuildup or exposureofthe
assembly.
3. Use onlyagrounded-tipsoldering iron tosolderor unsolderES
devices.
4. Use onlyanantistaticsolderremoval device. Somesolder
removal devices notclassifiedas "antistatic(ESDprotected)"can
generate electrical chargesufficienttodamageES devices.
5. Donotuse freon-propelledchemicals. These cangenerate
electrical charges sufficienttodamageES devices.
6. DonotremoveareplacementES device from its protective
packageuntil immediatelybeforeyou arereadytoinstall it. (Most
replacementES devices arepackagedwithleadselectrically
shortedtogetherbyconductivefoam, aluminum foil or
comparableconductivematerial).
7. Immediatelybeforeremoving theprotectivematerial from the
leadsofareplacementES device, touchtheprotectivematerial to
thechassisor circuitassemblyintowhichthedevice will be
installed.
CAUTION:Besureno powerisappliedtothechassisor circuit,
and observeall othersafetyprecautions.
8. Minimizebodilymotionswhenhandling unpackagedreplacement
ES devices. (Otherwise harmless motion suchas thebrushing
togetherofyour clothes fabricor thelifting ofyour footfrom a
carpetedfloor cangenerate staticelectricity(ESD) sufficientto
damageanES device).
"NOTEto CATVsysteminstaller:
This reminderis providedto call the CATVsysteminstaller's attention to Article 820-22 of the
NEC thatprovides guidelines forpropergrounding and, inparticular, specifies thatthe cable
ground shall be connectedto the grounding systemof the building, as close to the point of
cable entryas practical."
3. OPERATIONGUIDE

4. SERVICE NOTES (PLEASE READ)
4.1. SERVICE NOTES
4.1.1. SIMPLIFIEDFAULT FINDINGDATA
SimplifiedSelf-Diagnostic Systemfacilitates finding the cause of the fault. A4 digitfaultcode
will be displayedinF.I.P.
The SimplifiedFaultfinding data is storedinthe MemoryIC (IC6005). This data is clearedafterit
is displayed, and thenthe POWER button is pressedback on.
1. Withpowerturnedoff, press VCR/TV button on VCR (for over3
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/TV button on VCR withpowerturnedoff,
press anyoperation button on eitherVCR, or remote 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 bekeptafterACCord isunplugged.
2. When1to4listedinLock codeoccurs, theVCR goes intoVCR
shut-off condition. VCR stopsand all VCR function buttons
exceptfor powerbecomenon-operational.
4.1.2. USAGE SCREENMODE
This function displays the Total lapsedtime with poweron (day)and the Total lapsedtime with
Cylinderrotation (hour)on the TVmonitor.
1. Withpowerturnedon withoutacassette, press VCR/TV button on
VCR and 7keyon remote together.
TheUSAGE SCREENwill bedisplayedon theTV Monitor.
Fig. 1-9
Note:

Afterreplacing theCylinderUnit, press COUNTERRESETbutton
on remote inthismode. OnlyTotal lapsedtimewithCylinder
rotation (hour)will beclearedto0.
2. Torelease from UsageScreenMode, press anyoperation button
on VCR inthismode. VCR will return tonormal operation mode.
4.1.3. EEPROM IC(IC6005), MAINC.B.A. REPLACEMENT NOTE
Afterreplacing EEPROMIC (IC6005)orMainC.B.A., be sure to performthe "PG SHIFTER
ADJUSTMENT"inELECTRICALADJUSTMENTprocedures.
4.1.4. SERVICEPOSITION
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)
2piledVHS Cassette Tapes canbesubstitutedfor theFrameas
showninFig. 2-2.
2. Whenrecording inService Position (2), shorttheS-TabSW. Pins
on foil sideofMainC.B.A. toturn thisSW. on.
Fig. 2-3
3. Place thetapebetweentheCassette UpAss'yand MainC.B.A. to
get astability.
4. Whendisassembling/assembling, referto"CABINET SECTION"in

DISASSEMBLY/ASSEMBLY PROCEDURES.
4.1.5. HOT CIRCUIT
Primarycircuitexists on the MainC.B.A.
This circuitis identifiedas "HOT"on the C.B.A. and inthe Service Manual. Use extreme care to
prevent accidental shock whenservicing.
4.1.6. SERVICEMODE
Inorderto inhibitdetection of the Supply& Takeup Photo Transistors, Reel Sensor, and
CylinderLock, press and holdVCR/TVbutton and CH DOWN buttons on VCR togetherover5
seconds inpoweroff condition.
Fig. 3-1
The powercomes on and the unitgoes into service mode.
Inthis mode, Mechanismmovement canbe confirmed. Whenremoving Cassette UpAss'y, it
canbe confirmedwithout a cassette.
Torelease from this mode, press POWER button off ordisconnectAC Plug.
4.1.7. TRACKINGCENTERMODE(TRACKINGFIXAT CENTER)
Insertthe Cassette tape. Setthe unitinto Service Mode. Playback the Cassette tape. Press
PLAYbutton inPlayback mode. "TRACKINGCENTER"will be displayedon the TVmonitor. In
this mode, the tracking is fixedatcenter. (Autotracking and manual tracking functions are not
operational.)
Fig. 3-2