Panasonic SA-PM37MD User manual

ORDERNO. MD0108191C2
MDStereoSystem
SA-PM37MD
Colour
(S)... SilverType
Area
(EB)... Great Britain
TAPE SECTION
AR2MECHANISMSERIES
CD SECTION
RAE0155Z-1VTRAVERSE DECK SERIES
MDSECTION
MR3MECHANISMSERIES
SPECIFICATIONS
Specification
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AmplifierSection
RMSPowerOutput
(both channelsdriven)
10%total harmonicdistortion
LOW 15 W perchannel (6 )
HIGH 3W perchannel (6 )
Total BI-AMPPower 18 W perchannel
PMPO 160 W
Inputsensitivity
AUX 500 mV
P-MD 160 mV
USB Based on USBRev. 1.0
OPT-IN Digital Optical Input
Inputimpedance
AUX 30 k
P-MD 5k
Outputimpedance
Headphone 16-32
FMTunerSection
Frequencyrange 87.50-108.00 MHz
(0.05 MHzsteps)
Sensitivity 16.3dBf(1.8V, IHF’ 58)
Antennaterminals 75 (unbalanced)
AMTunerSection
Frequencyrange 522-1629 kHz(9kHzsteps)
Sensitivity
S/N20 dB 500 V/m
CassetteDeck Section
Track system 4 track, 2channel
Heads
Record/playback Solid permalloyhead
Erasure Doublegap ferritehead
Motor DCservo motor
Recording system ACbias 100kHz
Erasing system ACerase 100kHz
Tapespeed 4.8cm/sec
Overall frequencyresponse (-6dBatDeck Out)
TypeI (Normal) 35 Hz-14 kHz
TypeII (High) 35 Hz-14 kHz
Wowand Flutter 0.18 %WRMS
CDSection
Sampling frequency 44.1kHz
Decoding 16 bitlinear
Beam source Semiconductorlaser
Wavelength 780 nm
Numberofchannels 2channelsstereo
S/Nratio
SPOUT 70 dB(JISA)
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Wowand Flutter Belowmeasurablelimit
Digital filter 8 fs
D/Aconverter MASH(1bitDAC)
MDSection
System MiniDisc Digital Audio System
Recording Magneticfield modulation
directoverwrite
Reading Non-contactoptical system with
semiconductorlaser
(Wavelength =780nm)
Sampling frequency 44.1kHz
Coding system ATRAC/ATRAC3(MDLP)
Numberofchannels 2channelsstereo
Wowand flutter Belowmeasurablelimit
80 min MDDisc use 80 min (SP)
160 min (LP2)
320 min (LP4)
USBDACSection Based on USBRev. 1.0
General
Powersupply AC230-240 V, 50 Hz
Powerconsumption 60 W
Standby 0.9W
Dimensions(WxHxD) 165.4x228x315 mm
Mass 4.8kg
Notes :
1. Specificationsaresubjectto changewithoutnotice. Mass and
dimensionsareapproximate.
2. Total harmonicdistortion ismeasured bythedigital spectrum
analyzer.
*USand foreign patentslicensed fromDolbyLaboratories.
System:SC-PM37MD(EB) MusicCenter:SA-PM37MD(EB)
Speaker:SB-PM37 (E)
1. BeforeRepairand Adjustment
DisconnectACpower, dischargePowerSupplyCapacitorsC607, C635 and C637 through a10 ,
5Wresistor toground.
DONOTSHORT-CIRCUITDIRECTLY(withascrewdriverblade, for instance), as thismay destroy
solidstatedevices.
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Afterrepairsarecompleted, restorepowergraduallyusing avariac, toavoidovercurrent.
-Currentconsumption at AC240V, 50 HzinNO SIGNALmode
shouldbe~200mA.
2. Protection Circuitry
Theprotection circuitrymay have operatedifeitherofthefollowing conditionsarenoticed:
-Nosound isheardwhenthepoweristurnedon.
-Sound stopsduring aperformance.
Thefunction ofthiscircuitryistopreventcircuitrydamageif, for example, thepositive and
negative speakerconnection wires are"shorted", or ifspeakersystemswithanimpedance less
thantheindicatedratedimpedance oftheamplifierareused.
Ifthisoccurs, followtheprocedureoutlinedbelow:
1. Turnoff thepower.
2. Determinethecause oftheproblemand correct it.
3. Turnon thepoweronce againafteroneminute.
Note:
Whentheprotection circuitryfunctions, theunitwill notoperateunless thepowerisfirstturned
off and on again.
3. Accessories Remotecontrol transmitter
FMindoor antenna
ACmainslead
Powerplug adapter
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AMLoop antenna
4. Self-DiagnosticDisplayFunction
Thisunitisequippedwithaself-diagnosticdisplay function, whichwill beuseful during servicing
and maintenance.
-Refertothenext pagefordisplaysymbols, symptoms, etc.
4.1. Preparations
1. ACr02-positionedblankcassette tapewithanerase prevention
nicheon eitherSideAorB.
2. Anormal-positionedmusictapewitherase prevention niches on
bothSides Aand B. Bothtapes arehalfwayforwardedinadvance.
3. Theremote controllerthat comes withthisunit.
4.2. Entering Self-DiagnosticMode
1. Press [CD / ]button on theunitwithno MD, CD orcassette
tapeinserted. (Thepowermust beturnedon.)
2. Press and holddown[STOP ]button and thenpress [ / /
FF]button togetherfor2secondsormore.
3. When[STOP ]button isreleased, themessage, “TEXT”appears
on thedisplay. (Cf. Fig. 1)
4.3. Restoring Normal Display
-FromtheF76 display, thenormal displaydoes notappeartill an
errorisrecovered.
-FordisplaysotherthanF76, press “POWER”button toturnoff the
power, and thenturnon thepower.
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4.4. Clearing Self-DiagnosticMemory
Errorsarestoredintheunitmemory. Toclearmemory, press and holddown[STOP ]button
for 5secondsor moreduring self-diagnosticmode. Themessage, “CLEAR”appearson the
display whenmemoryiserased, and theunitdisplays themessage, “TEST”.
Memoryisnotaffectedbyturning off thepoweror unplugging thesocket.
Besuretoclearmemoryafterrepairiscompleted.
4.5. Displaying Self-DiagnosticResults
<CassetteDeck Section> (H01, H02, H03, H06, F01, F02)
1. Entertheself-diagnosticmode, following theinstructions
describedin[4.2. Entering Self-DiagnosticMode].
2. Insertanormal-positionedmusictapewitherase prevention
niches on bothSides Aand B. Press [TAPE ]button to
activate theTPS operation sothat thetapeautomaticallystopsat
aninterval betweenmusicselections.
3. Press [ / ]and [ ]buttonstogetheron theremote
controller. (Recording does notstart.)
4. Then, insertaCr02-positionedblankcassette tapewithanerase
prevention nicheofSideAorBset totheleft side.
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5. Press [ / / FF]button. Thetapewill beforwardedand
automaticallystop aftertwoseconds.
6. Removethecassette tape, and set theotherside.
7. Press [REW / / ]button. Thetapewill berewound and
automaticallystopsaftertwoseconds.
8. Press [STOP ]button on theunit.
Ifanerrorisfound, aself-diagnostickeyappearson thedisplay.
Ifseveral errorsarefound, thedisplayshowsthese keyswhen
[STOP ]button ispressedrepeatedly. (Ex.:H01 -H02 -F01 -
H01)
Ifno errorisfound, onlythemessage, “TEST”appearson the
display.
(*1)TPS operation (musicsearch)detectstheblanksectionsbetweenmusicselections.
Therefore, do notuse tapes withthefollowing conditions:
-Ablanksection that lasts only4secondsorless.
-Noblanksections(recording through microphones, etc.).
-Musicselectionsthat haveextremelylow pitches orprolonged
silentsections(suchas classical music).
-and/orMusicrecordedwithfadein/outeffect.
<CD Section> (H15, F15, F26)
1. Entertheself-diagnosticmode, following theinstructions
describedin“4.2. Entering Self-DiagnosticMode”.
2. Press [OPEN/CLOSE ]button toinsertaCD.
3. Press [STOP ]button. Ifanerrorisfound, aself-diagnostickey
appearson thedisplay.
Ifseveral errorsarefound, thedisplayshowsthese keyswhen
[STOP ]button ispressedrepeatedly. (Ex.:H15 -F15 -F26)
Ifno errorisfound, onlythemessage, "TEST"appearson the
display.
<MDSection> (MDF15, MDF26, F22, F28, F29)
1. Entertheself-diagnosticmode, following theinstructions
describedin“4.2. Entering Self-DiagnosticMode”.
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2. InsertaMD(eitherrecord/playback orplayback onlytype)
3. AfterTOCreading, press [MD / ]button.
4. Press [STOP ]button.
Ifanerrorisfound, aself-diagnostickeyappearson thedisplay.
Ifseveral errorsarefound, thedisplayshowsthese keyswhen
[STOP ]button ispressedrepeatedly. (Ex.:MDF15 -MDF26 -
F22).
Ifno errorisfound, onlythemessage, "TEST"appearson the
display.
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5. Caution forACMains Lead
6. Operation Procedures
9

7. Handling Precautions ForTraverse Deck (CD/MD)
Thelaserdiodeinthetraverse deck (optical pickup)may break downduetopotential difference
causedbystaticelectricityofclothes or humanbody.
So, becareful ofelectrostaticbreakdownduring repairofthetraverse deck (optical pickup).
Handling ofCD traverse deck (optical pickup)
1. Donotsubject thetraverse deck (optical pickup)tostatic
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electricityas itisextremelysensitivetoelectrical shock.
2. Theshortland betweentheNo. 4(LD)and No. 5(GND)pinson the
flexibleboard(FFC)isshortedwithasolderbuild-up toprevent
damagetothelaserdiode.
3. Take carenottoapplyexcessivestress totheflexibleboard(FPC
board).
4. Donotturnthevariableresistor(laserpoweradjustment). Ithas
alreadybeenadjusted.
Handling ofMDUnit(optical pickup)
1. Donotsubject theMDunit(optical pickup)tostaticelectricityas it
isextremelysensitivetoelectrical shock.
2. Theshortland betweentheNo. 25 (LD-GND)and No. 24 (LD)pins
on theflexibleboardisshortedwithasolderbuild-up toprevent
damagetothelaserdiode.
3. Take carenottoapplyexcessivestress totheflexibleboard(FFC).
4. Donotturnthevariableresistor(laserpoweradjustment). Ithas
alreadybeenadjusted.
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Grounding for electrostaticbreakdownprevention
1. Humanbodygrounding
Use theanti-staticwrist straptodischargethestaticelectricity
fromyourbody.
2. Worktablegrounding
Putaconductivematerial (sheet) orsteel sheet on thearea where
thetraverse deck (optical pickup)isplaced, and ground thesheet.
Caution :
Thestaticelectricityofyourclothes will notbegroundedthrough
thewrist strap. So, take carenottolet yourclothes touchthe
traverse deck (optical pickup).
Caution whenReplacing theOptical Pickup :
Thetraverse has ashortpointshortedwithsoldertoprotect the
laserdiodeagainst electrostatics breakdown. Besuretoremovethe
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solderfromtheshortpointbeforemaking connections.
8. Precaution of LaserDiode
Caution :
Thisproduct utilizes alaserdiodewiththeunitturned"ON",
invisiblelaserradiation isemittedfromthepick up lens. /
Wavelength:780 nm/ Maximumoutputradiation powerfrompick
up :100 W/VDE/ Laserradiation frompick up unitissafetylevel,
buttake note ofthefollowing:
1. Donotdisassembletheoptical pick up unit, since radiation from
exposedlaserdiodeisdangerous.
2. Donotadjust thevariableresistoron thepick up unit. Itisalready
adjusted.
3. Donotlookat thefocuslensbyusing optical instruments.
4. Donotstareat thepick up lensforalong time.
ACHTUNG:
Dieses Produkt enthälteineLaserdiode. ImeingeschaltetenZustand
wirdunsichtbareLaserstrahlung von derLasereinheitabgestrahlt. /
Wellenlänge:780nm/ MaximaleStrahlungsleistung der
Lasereinheit:100 W/VDE/ DieStrahlung anderLasereinheitist
ungefährlich, wenn folgendePunkte beachtet werden:
1. DieLasereinheitnichtzerlegen, dadieStrahlung ander
freigelegtenLaserdiodegefährlichist.
2. DenwerkseitigjustiertenEinstellreglerderLasereinhitnicht
verstellen.
3. NichtmitoptischenInstrumentenindieFokussierlinse blicken.
4. NichtüberlängereZeitindieFokussierlinse blicken.
ADVARSEL:
I dette aapparat anvendes laser.
CAUTION!
THIS PRODUCTUTILIZES ALASER.
USE OFCONTROLS ORADJUSTMENTS ORPERFORMANCE OFPROCEDURES OTHERTHAN
THOSE
SPECIFIEDHEREINMAYRESULTINHAZARDOUS RADIATIONEXPOSURE.
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Use ofCaution Labels
14

9. Disassemblyand MainComponent Replacement
Procedures beforeOperation Checks
“ATTENTIONSERVICER”
Somechassiscomponentsmay have sharp edges. Becareful whendissassembling and
servicing.
1. Thissection describes procedures forchecking theoperation of
themajorcircuitboardsand replacing themaincomponents.
2. Forreassemblyafteroperation checks orreplacement, reverse the
respectiveprocedures. Special reassemblyprocedures are
describedonlywhenrequired.
Warning :
Thisproductuses alaserdiode. Refertocaution statementPrecaution ofLaserDiode.
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ACHTUNG:
-DieLasereinheitnichtzerlegen.
-DieLasereinheitdarfnurgegeneinevomHertstellerspezifizierte
Einheitausgetauschtwerden.
9.1. ProcedureforChecking MechanismControl PCB, LCD PCB,
Headphone/P-MDPCB, and USBPCB
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-Check theMechanismControl PCB, LCD PCB, and Headphone/P-
MDPCB whentheunitisdisassembledas showninthefigure
below.
17

-Check theUSBPCB whentheunitisdisassembledas showninthe
figurebelow.
9.2. ProcedureforChecking MainPCB and PowerPCB
-Follow Steps1to8describedinItem9.1.
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-Check theMainPCB and PowerPCB whentheunitisdisassembled
as showninthefigurebelow.
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9.3. ProcedureforChecking MDServoPCB
-Follow Steps1to8describedinItem9.1.
-Follow Steps1and 2describedinItem9.2.
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