Panasonic DMRE75VP User manual

ORDERNO.DSD0403007C1
B24
DVDVideoRecorder
DMR-E75VP
Colour
(S).......................SilverType
SPECIFICATIONS
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1. Safetyprecautions
1.1. General guidelines
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1. Whenservicing, observetheoriginal leaddress. Ifashortcircuit
isfound, replace all parts whichhavebeenoverheatedor
damagedbytheshortcircuit.
2. Afterservicing, see toitthat all theprotectivedevices suchas
insulation barriers, insulation papersshieldsareproperlyinstalled.
3. Afterservicing, make thefollowing leakagecurrentchecks to
preventthecustomerfrombeing exposedtoshock hazards.
1.1.1. Leakagecurrentcoldcheck
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 be . Figure1
1.1.2. Leakagecurrenthotcheck / (See Figure 1 .)
1. Plug theACcorddirectlyintotheACoutlet. Donotuse an
isolation transformerforthischeck.
2. Connect a1.5k , 10 watts resistor, inparallel witha0.15 F
capacitors, betweeneachexposedmetallicparton theset and a
good earthground suchas awaterpipe, as shownin Figure1.
3. Use anACvoltmeter, with1000 ohms/voltormoresensitivity, to
measurethepotential across theresistor.
4. Check eachexposedmetallicpart, and measurethevoltageat
eachpoint.
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5. Reverse theACplug intheACoutlet and repeat eachoftheabove
measurements.
6. Thepotential at anypointshouldnotexceed0.75 volts RMS. A
leakagecurrenttester(Simpson Model 229 orequivalent) maybe
usedtomake thehotchecks, leakagecurrentmust notexceed1/2
milliampere. Incase ameasurementisoutsideofthelimits
specified, thereisapossibilityofashock hazard, and the
equipmentshouldberepairedand recheckedbeforeitisreturned
tothecustomer.
1.2. Caution forfuse replacement
2. Prevention of ElectrostaticDischarge (ESD) to
ElectrostaticSensitive(ES) Devices
Somesemiconductor (solidstate)devices canbedamagedeasilybystaticelectricity. Such
componentscommonlyarecalledElectrostaticSensitive (ES)Devices. Examples oftypical ES
devices areintegratedcircuitsand somefield-effecttransistor-sandsemiconductor "chip"
components. Thefollowing techniques shouldbeusedtohelpreduce theincidence of
componentdamagecausedbyelectrostaticdischarge(ESD).
1. Immediatelybeforehandling anysemiconductorcomponentor
semiconductor-equippedassembly, drainoff anyESDon your
bodybytouching aknownearthground. Alternatively, obtainand
wearacommerciallyavailabledischarging ESDwrist strap,
whichshouldberemovedforpotential shock reasonspriorto
applying powertotheunitundertest.
2. Afterremoving anelectrical assemblyequippedwithES devices,
place theassemblyon aconductivesurface suchas aluminum
foil, topreventelectrostaticchargebuildup orexposureofthe
assembly.
3. Use onlyagrounded-tipsoldering iron tosolderorunsolderES
devices.
4. Use onlyananti-staticsolderremoval device. Somesolder
removal devices notclassifiedas "anti-static(ESDprotected)"can
generate electrical chargesufficienttodamageES devices.
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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 or
comparableconductivematerial).
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 hamless motion suchas thebrushing
togetherofyourclothes fabricorthelifting ofyourfootfroma
carpetedfloorcangenerate staticelectricitysufficienttodamage
anES device).
3. Precaution of LaserDiode
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4. Howtoreplace the LithiumBattery
REPLACEMENTPROCEDURE
1. RemovetheTop case and DVD-RAMdriveunitwithMainP.C.B. by
referring theDisassembling Procedure.
2. UnsoldertheLithiumBatteries:B7751 and thenreplace itintonew
one.
(Asshownin23.2.3. TheMainP.C.B. )
NOTE:
Thelithium batteryisacritical component. (TypeNo.:CR2354-1GUFManufacturedby
Panasonic. )
Itmustneverbesubjectedtoexcessive heator discharge.
Itmustthereforeonlybefittedinequipmentdesignedspecificallyfor itsuse.
Replacementbatteries mustbeofthesametypeand manufacture.
They mustbefittedinthesamemannerand location as theoriginal battery, withthecorrect
polaritycontactsobserved.
Donotattempttore-chargetheoldbatteryor re-use itfor anyotherpurpose.
Itshouldbedisposedofinwasteproductsdestinedfor burial ratherthanincineration.
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5. Handling the Lead-free Solder
5.1. Aboutleadfree solder(PbF)
Distinction ofPbF P.C.B.:
P.C.B.s(manufactured)using leadfree solderwill have aPbF stampon theP.C.B.
Caution:
-Pbfree solderhas ahighermelting pointthanstandardsolder;
Typicallythemelting pointis50 -70°F(30 -40°C)higher. Please
use ahigh temperaturesoldering iron. Incase ofthesoldering iron
withtemperaturecontrol,please set itto700 ±20°F(370 ±10°C).
-Pbfree solderwill tend tosplashwhenheatedtoo high (about
1100°F/600°C).
-Whensoldering orunsoldering, please completelyremoveall ofthe
solderon thepinsorsolderarea, and besuretoheat thesoldering
points withthePbfree solderuntil itmelts enough.
6. Each Buttons
7. NewFeatures
7.1. Function ofPowerCircuit(IC11150)
1. General
WeadoptedICmoduleas theSwitching PowerCircuitfor lowerpowerconsumption.
IC11150 isconstructedwithSwitching materialsand Control IC, and ispartial resonance module.
WerealizedSwitching Powerwithhigh efficiency, lownoise and lowpowerconsumption.
2. Equivalence CircuittoIC11150
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Pin
No. Symbol Description
1 Z/C Triggerinputterminal.
Zero detection voltage:0.25V
Itbecomes less than3V, themode
turnstostandby.
2F/B Bias currentfeedback inputterminal.
Switching ONtime(min.)~(max.)
1.5V ~4.5V / 0 sec. ~25 sec.
Instandbymode
Oscillation stops:less than0.8V
Oscillation starts:over1.8V
3GND GND terminal
4Vcc Powerterminal ofIC.
Oscillation starting voltage:Vcc =
and over14.5V
Oscillation stop voltage:Vcc =and
less than9.6V
Overvoltagelatching voltage:Vcc =
20V
5Drain Drainterminal for Mainswitching
material.
3. Startup Circuit
Whenpoweristurnedon, inputvoltageoftheSwitching TransformerissuppliedtoIC11150 as
thestartup power.
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AfterIC11150 has started, thestartup currentiscutoff.
ThecurrentofStartup Circuitissuppliedas constantcurrentsource inIC11150 and as charge
currentfor thecapacitor connectedbetweenVcc terminal and GND outsideofIC11150 until Vcc
reaches 14.4V.
WhenVcc reaches 14.4V, theStartup Circuitiscutoff, thenoscillation starts.
Afterthen, powerofIC11150 issuppliedfrom control coil.
Incase, thepowerfailureor shortoutoftheload, whenVcc becomes 9.0V;theoscillation stops,
furthermoreVcc becomes 7.1V theStartup Circuitstartsup and Vcc startstorise.
Startup CircuitTiming Chart
Function ofZ/CTerminal
WhenvoltageofZ/Creaches 0.25V, Gatesignal isoutputand Draincurrentstartstoflow.
Function ofF/Bterminal
F/Bsignal decides Switching ONwidthinlowvoltagecontrolling.
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TheSwitching ONwidthrespondstochangeofF/BVoltage.
StandbyFunction
WhenZ/CVoltagebecomes less than3V, theunitchanges toStandbymode.
IC11150 Block Diagram
Signal name
PinNo. Name Symbol
1 Zero CurrentDet. Z/C
2Feedback F/B
3GND GND
4Vcc Vcc
5Drain Drain
8. (DVD) Taking out the Disc fromRAM-DriveUnit
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when the Disc cannot be ejected byOPEN/CLOSE
button
8.1. (DVD)ForcibleDisc Eject
8.1.1. (DVD) Whenthepowercanbeturnedoff.
1. Turnoff thepowerand press [(DVD)STOP], [(DVD)CH UP]keys
on thefrontpanel simultaneouslyfor5seconds.
8.1.2. (DVD) Whenthepowercannotbeturnedoff.
1. Press [POWER]keyon thefrontpanel forover10 secondstoturn
off thepowerforcibly, and press [(DVD)STOP][(DVD)CH UP]keys
on thefrontpanel simultaneouslyfor5seconds.
8.2. (DVD)WhentheForcibleDisc Eject cannotbedone.
1. Turnoff thepowerand pull outACcord.
2. RemovetheTop Case.
3. RemovetheFrontPanel.
4. Removescrew (A)and EarthAngle.
5. Remove4screws(B)and UpperBase UnitfromDVD-RAMDrive.
6. Take outthedisc and puttheOpenerRolleron fullyposition for
direction ofArrow.
7. PuttheUpperBase Unitsothat theOpenerRollerisinsertedinto
thegroove.
8. Check centerofOpenerRollerisseenthrough theOpener
position Checking Hole, and tighten4screws(B).
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9. (VHS) Removing CassetteTape manually
Whenthecassettetapecouldnotbeuninstalledfrom anelectrical malfunction, thereare2ways
toremove acassettetape.
9.1. (VHS)Removal bycompulsoryunloading.
IfService Modecanbeactivatedwhenthepowercannotbeturnedon, thisoperation isable.
1. Press [FF]and [EJECT]button simultaneouslyformorethan3
secondsand set theService Modeto7.
2. Press [STOP]button inordertounloadthemechanism. (Pay
attention totapeslack)
Service ModeDisplay:
7** ** (STOP)70L** (EJECT)
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9.2. (VHS)Removal bymanual operation byrotating theLoading
Motorwiththebatteries.
1. Disconnect theACplug, and removetheTop Panel and theFront
Panel byreferring totheDisassemblyProcedures.
2. Connect three batteries (1.5Vspec.)totheLoading Motorinseries
forsupplying 4.5Vtorotate theLoading Motoras shownbelow.
3. Stop unloading just beforeunloading will becompletedas shown
below, and thenthetapebecomes slack as shownbelow.
4. Rotate theS-Reel byasmall minusscrewdrivertoremovethe
slack tapeas shownbelow.
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5. Thenunloadagaintoremovethecassette tapeas shownbelow.
9.3. (VHS)Take outCassette Tapemanuallyafterremoving the
mechanism
1. Disconnect theACplug, and removetheTop Panel, FrontPanel
and theMechanismbyreferring to"13 Assembling and
Disassembling"
2. RemovetheScrew and removetheLoading Motoras shownbelow.
3. Rotate theMainCamGearcounter-clockwise until just beforethe
unloading will becompletedas shownbelow. .
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4. Rotate theCapstanMotorclockwise toremovetheslack tapeas
shownbelow.
5. Rotate theMainCamGearcounter-clockwise againtoremovethe
cassette-tapeas shownbelow.
6. AttachLoading Motorand tightenthescrew.
7. Set thePosition SwitchtoEJECTPOSITIONcertainlyand attach
themechanismtochassisas shownbelow.
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10. (DVD) Service Explorer
Confirm “RAM-Drive LastError”inService Mode
ExecuteService Mode
1. Whenthepowerisoff, press [VHStoDVDDUBBING], [OPEN/
CLOSE]and [DVDSTOPkeyssimultaneouslyfor5seconds.
FL Display:
*Afterfinishing display“(7). FactorofDriveErroroccurring”,
press [0] [2] ~[9] [9] keysoftheRemote Controllersothat 99
memories canbedisplayedas maximum.
2. Press [4] [2] keysofremote controller.
ExampleofFL Display:
(1)Error Numberisdisplayedfor 5seconds.
(2)Timewhentheerror has occurredisdisplayedfor 5seconds.
(3)LastDrive Error (1/2)isdisplayedfor 5seconds.
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(4)LastDrive Error (2/2)isdisplayedfor 5seconds.
(5)Error occurring Disc typeisdisplayedfor 5seconds.
(6)Disc Maker's IDisdisplayedfor 5seconds.
ExampleofDisc Maker's ID:
DVD-R Disc
No. FL Display (Disc
Maker's ID) Disc Maker Country
1MEI Panasonic Japan
2PVC Pioneer Japan
3MCC Mitsubishi Chemical
Corporation Japan
4TDK TDK Japan
5MXL Maxell Japan
6MCI MITUICHEMICALS Japan
7 JVC Victor JVC Japan
8TAIYOYUDEN Taiyoyuden Japan
TYG
9GSC GigaStorage Taiwan
10 PRODISC Prodisc Taiwan
11 PRINCO PRINCO Taiwan
12 RITEK RITEK Taiwan
13 OPTDISC OPTDISC Taiwan
14 LEADDATA LEADDATA Taiwan
15 CMC CMC Taiwan
16 AUVISTAR AUVISTAR Taiwan
17 ACER Acer Taiwan
18 VIVASTAR VIVASTAR Switzerland
19 LGE LGElectronics Korea
DVD-RAMDisc
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No. FL Display (Disc
Maker's ID) Disc Maker Country
1MEI Panasonic
2MATSUSHITA Panasonic Japan
3MXL Maxell Japan
4PRODISC Prodisc Taiwan
5OPTDISC OPTDISC Taiwan
6CMC CMC Taiwan
*Since andisplay isarbitrarilysetup bythedisk producerside, theabove-mentioneddisplay
may bechanged.
Please make itreference as anexampleofadisplay.
(7)Factor ofDrive Error occurring isleft displayed
Error Occurring Disc Type
FL Display Disc Type
00 DVD-ROM/Video
01 Audio-CD
02 2.6GBDVD-RAM
03 4.7GBDVD-RAM
04 DVD-R
Error Occurring Disc State
11. (DVD) Self-Diagnosisand Special Mode Setting
11.1. (DVD)Self-DiagnosisFunctions
Self-DiagnosisFunction provides information for errorstoservice personnel by“Self-Diagnosis
Display”whenanyerror has occurred.
U59, H** and F** arestoredinmemoryand held.
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Error
Code Diagnosis contents Description Monitor
Display FL display
U12 Remote control code
error Displayappears whenmainunit and remote controllercodes are
not matched.
Nodisplay
“*” is remote controller
code of the mainunit.
Displayfor5 seconds.
U59 Abnormal inner
temperature detected Displayappears whenthe drive temperature exceeds 70°C.
The poweris turnedoff forcibly.
For30 minutes afterthis, all key
entries are disabled. (Fanmotor
operates at the highest speedfor
the first 5 minutes. Forthe
remaining 25 minutes, fanmotor
is alsostopped.) The event is
savedinmemoryas well.
Nodisplay
“U59” is displayedfor30
minutes.
U99 Hang-up Displayedwhencommunication
errorhas occurredbetweenMain
microprocessorand Timer
microprocessor.
Nodisplay
Displayedis left until the
[POWER] keyis pressed.
H19 Inoperative fanmotor Displayappears when
inoperative fanmotoris detected
afterpoweredon.
The poweris turnedoff when
detecting.
Nodisplay
Displayedis left.
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Error
Code Diagnosis contents Description Monitor
Display FL display
F00 Noerrorinformation Initial setting forerrorcode in
memory
(Errorcode Initialization is
possible witherrorcode
initialization and mainunit
initialization.)
Nodisplay
Displayedis left.
F58 Drive hardware error Displayappears whendrive unit
erroris detected. The event is
savedinmemory.
Nodisplay
Displayedis left.
F34 Initialization error
whenmain
microprocessoris
startedup forprogram
recording
Displayappears when
initialization erroris detected
afterstarting up main
microprocessorforprogram
recording. The event is savedin
memory.
The poweris turnedoff when
detecting.
Nodisplay
Displayedis left.
UNSUPPORT
Unsupporteddisc
error *Anunsupportedformat disc was played, although the drive
starts normally.
*The data format is not
supported, although the media
type is supported.
*Exceptionallyincase of the disc
is dirty.
“This disc is
incompatible.”
Displayfor5 seconds.
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