Panasonic SAPM25 - MINI HES W/CD PLAYER User manual

ORDERNO. MD0107176C3
CD StereoSystem
SA-PM25
Colour
(S)... SilverType
Area
(GD)... SouthKorea
TAPE SECTION
AR2MECHANISMSERIES
CD SECTION
RAE0155Z-1VTRAVERSE DECK SERIES
SPECIFICATIONS
Specification
1

AmplifierSection
Poweroutput
THD 10%, both channelsdriven
100 Hz, both channelsdriven,
(LOW) 9W (6 )
1kHz, both channelsdriven
(HIGH) 5W (6 )
Total BI-AMPpower 14 W
PMPOpoweroutput
Total BI-AMPpower 160 W
Inputsensitivity
AUX 250 mV
Inputimpedance
AUX 47 k
Outputimpedance
Headphone 16-32
FMTunerSection
Frequencyrange 87.50-108.00 MHz
(0.05 MHzsteps)
Sensitivity 1.8V(IHF)
S/N26 dB 1.5V
Antennaterminals 75 unbalanced
AMTunerSection
Frequencyrange 522-1629 kHz(9kHzsteps)
520-1630 kHz(10 kHzsteps)
Sensitivity
S/N20 dB(at999 kHz) 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/s
Overall frequencyreponse (+3dB, -6dBatDECK OUT)
NORMAL (TYPEI) 50 Hz-13 kHz
HIGH(TYPEII) 50 Hz-13 kHz
S/Nratio 52 dB(Aweighted)
Wowand flutter 0.18 %(WRMS)
Fastforward and rewind time Approx. 120 secondswith C-60
cassettetape
CDSection
Sampling frequency 44.1kHz
Decoding 16 bitlinear
Beam source Semiconductorlaser
Wavelength 780 nm
Numberofchannels 2channelsstereo
Wowand flutter Belowmeasurablelimit
Digital filter 8 fs
D/Aconverter MASH(1bitDAC)
2

General
Powersupply AC220 V, 60 Hz
Powerconsumption 54 W
Powerconsumption in standby
mode 0.7W
Dimensions(WxHxD) 180 x241 x318 mm
Mass 4.6kg
Notes :
1. Specificationsaresubjectto changewithoutnotices. Mass and
dimensionsareapproximate.
2. Total harmonicdistortion ismeasured bythedigital spectrum
analyzer.
System:SC-PM25 (GD) MusicCenter:SA-PM25 (GD)
Speaker:SB-PM25 (EG)
1. BeforeRepairand Adjustment
DisconnectACpower, dischargePowerSupplyCapacitorsC512 through a10 , 5Wresistor to
ground.
DONOTSHORT-CIRCUITDIRECTLY(withascrewdriverblade, for instance), as thismay destroy
solidstatedevices.
Afterrepairsarecompleted, restorepowergraduallyusing avariac, toavoidovercurrent.
-Currentconsumption at AC220V, 60 HzinNO SIGNALmode
shouldbe~150mA.
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, followtheprocedureoutlines below:
1. Turnoff thepower.
2. Determinethecause oftheproblemand correct it.
3. Turnon thepoweronce againafteroneminute.
3

Note:
Whentheprotection circuitryfunctions, theunitwill notoperateunless thepowerisfirstturned
off and thenon again.
3. Accessories
Note:RefertoPacking Materials&Accessories for partnumber.
RemoteControl Transmitter
ACPowerSupply
FMIndoor Antenna
AMLoop Antenna
4. Handling Precautions ForTraverse Deck
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
electricityas itisextremelysensitivetoelectrical shock.
2. Theshortland betweentheNo.4(LD)and No.5(GND)pinson the
flexibleboard(FFC)isshortedwithasolderbuild-up toprevent
4

damagetothelaserdiode.
3. Take carenottoapplyexcessivestress totheflexibleboard(FPC
board).
4. Donotturnthevariableresistor(laserpoweradjustment). Ithas
alreadybeenadjusted.
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).
5

Caution whenReplacing theOptical Pickup :
Thetraverse has ashortpointshortedwithsoldertoprotect the
laserdiodeagainst electrostatics breakdown. Besuretoremovethe
solderfromtheshortpointbeforemaking connections.
5. 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,
butbesurethefollowings:
1. Donotdisassembletheoptical pick up unit, since radiation from
exposedlaserdiodeisdangerous.
2. Donotadjust thevariableresistoron thepick up unit. Itwas
alreadyadjusted.
3. Donotlookat thefocuslensusing optical instruments.
4. Recommend nottolookat pick 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:
6

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.
Use ofCaution Labels
6. Operation Procedures
7

7. Disassemblyand MainComponent Replacement
Procedures
“ATTENTIONSERVICER”
Somechassiscomponents mayhavesharpedges. Becareful when
disassembling and servicing.
1. Thissection describes procedures forchecking theoperation of
themajorprintedcircuitboardsand replacing themain
8

components.
2. Forreassemblyafteroperation checks orreplacement, reverse the
respectiveprocedures.Special reassemblyprocedures are
describedonlywhenrequired.
3. Select itemsfromthefollowing index whenchecks orreplacement
arerequired.
4. RefertheParts No. on thepageof"MainComponentReplacement
Procedures", ifnecessary.
Contents
-Checking ProcedureforeachmajorP.C.B.
-Checking oftheTransformerP.C.B.
-Checking fortheMainP.C.B.
-Checking fortheCD ServoP.C.B.
-Checking fortheCD ServoP.C.B.
-Checking forthePowerP.C.Band Deck P.C.B.
-Diaassemblyand AssemblyoftheDisc Trayand CD Traverse Unit
-DisassemblyoftheDisc Tray
-DisassemblyoftheCD Traveerse Unit
-MainComponentReplacementProcedure
-ReplacementoftheCD ServoP.C.B. and Optical Pick-up Unit
Warning :-
Thisproduct uses alaserdiode. Refertocaution statement
Precaution ofLaserDiode.
ACHTUNG:-
-DieLasereinheitnichtzerlegen.
-DieLasereinheitdarfnurgegeneinevomHertstellerspezifizierte
Einheitausgetauschtwerden.
7.1. DisassemblyProcedureforEachMajorP.C.B. Checking
7.1.1. Checking for theTransformerP.C.B.
Step1Remove 2screwseachside.
Step2Remove 7screwsfrom therearpanel.
9

Step3Release connector CS802 and PW802.
Step4Remove 10 screws.
10

-Check theTransformerP.C.B. as shown.
7.1.2. Checking for theMainP.C.B.
Step5Remove 2screws
Step6Pushclawsbothsideand bottom. Release connectorsCS601Aand CN1301 between
Panel P.C.B. and MainP.C.B. Pushfrontpanel forward.
-Check theMainP.C.B. as shown.
7.1.3. Checking for theCD ServoP.C.B.
11

Step1Lift up theCD unitand place itas showninthefollowing figure.
-Check theCD ServoP.C.B. as shown.
7.1.4. Checking for thePowerP.C.Band Deck P.C.B..
12

Step2Lift up theMainP.C.B. togetherwiththePowerP.C.B. and rotateleft thenplace theP.C.B.
as showninthefollowing figure.
-Check thePowerP.C.B. as shown.
7.2. Disassemblyand AssemblyoftheDisc Trayand CD Traverse
Unit
7.2.1. DisassemblyoftheDisc Tray.
13

Step1Turn thegearcounterclock wise until theCD Tray startstomove out.
Step2Release the2clawsand remove theclampplateinthedirection ofthearrow.
Step3Lift up theCD Tray toremove it.
7.2.2. DisassemblyoftheCD Traverse Unit.
14

Step1Release the2clawsand remove theCD Traverse Unitinthedirection ofthearrow.
NOTE :
1. Follow thereverse proceduretoreplace theCD Traverse Unitand
CD Tray.
2. Make surethat the2gearisinposition shownaboveand thehole
on therightgearisalign withtheholebelow itwhenreplacing the
CD Traverse Unitand CD Tray.
NOTE :Whenreplacing theCD Tray, make suretheDentedlineisattheposition as shown.
7.3. MainComponentReplacementProcedure
15

7.3.1. ReplacementoftheCD ServoP.C.B. and Optical Pick-up Unit.
Step2Desolderthe4legsof2motorsand flipovertheCD ServoP.C.B.
Step3Remove theflexiblecableatCN701.
-Removal oftheflexiblecable/ Pushthetop oftheconnectorinthe
direction ofthearrow 1and thenpull outtheflexiblecableinthe
direction ofthearrow 2.
NOTE :Insertashortpinintotheflexiblecable.
Step4Pushtheleverinand turn thegearclock wise fully.
16

Step6Release theclawand remove theDriverPlate.
Step7SlideouttheOptical Pick-up Unitfrom theindentopening.
17

NOTE :DonottouchtheLense on theOPU.
8. Self-DiagnosticDisplayFunction
Thisunitisequippedwithaself-diagnosticfunction which, intheeventofamalfunction,
automaticallydisplay acodeindication thenatureofthemalfunction. Use thisself-diagnostic
function whenservicing theunit.
8.1. Entering self-diagnosticMode
1. Turnthepoweron.
2. SwitchtoTAPE modewithno CD, cassette loaded.
3. Press and holdtheSTOPbutton forat least 2seconds, and while
still pressing theSTOPbutton, press theForwardSkip/Search
button forat least 2seconds. TheunitentersSelf-DiagnosticMode
and display“T”. Thenanerrorcode(e.g. H01) isdisplayed, ifany.
Inthecase ofno error, “T”isdisplayedon FL.
4. Ifmorethan1errorexists, thedisplaywill sequentiallyshow the
respectiveerrorcodes eachtimetheSTOPbutton ispressed.
8.2. Cassette MechanismTest (ForerrorcodeH01, H02, H03, F01,
F02)
1. Loadacassette tapewiththeerasureprevention tab, removefrom
left sideonlyand close thecassette holder.
2. Press "ForwardSkip/Search"(Tapewill bestop after2seconds).
3. Loadacassette tapewiththeerasureprevention tab, removefrom
rightsideonlyand close thecassette holder.
4. Press "Reverse Skip/Search"(Tapewill bestop after2seconds).
18

5. Loadapre-recordedtapewithbothsiderecordtabsintact and
close thecassette holder.
6. Press "TapePlay"(AfterTPS function, tapewill stop
automatically).
7. Press "TapeRecord".
8. Press "Stop"toindicate Errorcode.ve).
~Ifseveral problemexist, errorcodewill changeeachtimewhen
"Stop"ispressed.
(e.g. H01 H03 F01 ..... etc.)
8.3. Clearing all errorcode
1. Press and holdSTOPbutton for5seconds.
2. FL indicatorshows“CLEAR”for1second and changeto“T”.
8.4. Cancelling theSelf-Diagnosticmode
1. Press the“Power”button toturnoff thesystem. Press the
“Power”button againtoturnon thesystem.
8.5. Description oferrorcode
8.5.1. PowerAmplifierFailure(F61)
Whenpoweramplifieroutputfailurefor powersupplyfailure.
8.5.2. Error detection for CD Block
Error Code Problem Condition PossibleCause
F15 CD does notfunction RESTSWdetection error.
Thiserror occurswhentheOptical Pick UpRESTSW(S701)
is
detectedwithinthespecifiedtime. (about8seconds).
H15 TheCD tray closes CD disc tray detectswitchNG. (Check and replace)
F26 CD does notfunction Transmission error betweenCD servoLSIand micon.
Thiserror occursbetweenCD servoLSIand micon. This
error
whenthePOWERisONfor theCD block and anerror is
detected
thetransmission has started.
F75 CD powerabnormal Undernormal operation (self-diagnosticmodeinclusive),
check
CDRSTisHfor SELECTORatCD. IfitisnotHafter1sec, it
shall
memorisedas anerror.
8.5.3. Error detection codefor Cassette MechanismBlock
19

Error Code Problem Condition PossibleCause
H01 Cassettedeck
maifunctions MODE SWdetection error.
Faultycontactor shortcircuitofmechanism modeswitch. (
S971)
H02 Recording notpossible RECINH SWdetection error.
Faultycontactor shortcircuitofRECINH switch. (S974,
S975)
H03 Playback cannot
perform. HALF SWdetection error.
Faultycontactor shortcircuitofHALF switch. (S972)
F01 Thetapeadvances
slightlyand thenstops. Reel pulse detection error.
Faultyreel pulse, faultyholedetectIC. (IC971)
F02 Cassettedeck will not
perform TPS function FaultyTPS drive IC. (IC303)
9. Measurement and Adjustment
9.1. Cassette Deck Section
Measurementcondition
-Recordtimer:OFF
-Make surehead, capstanand pressurerollerareclean.
-Judgeableroomtemperature20 ±5°C(68 ±9°F)
Measuring instrument
-EVM(ElectronicVoltmeter)
-Digital frequencycounter
Testtape
-Headazimuthadjustment(8 kHz, -20 dB);QZZCFM
-Tapespeedadjustment(3 kHz, -10 dB);QZZCWAT
-Playback gainadjustment(315 Hz, 0dB);QZZCFM
-Normal reference blanktape;QZZCRA
-CrO2blanktape;QZZCRX
9.1.1. HeadAzimuthAdjustment
Note:
Ifyou wishtoreadjusttheheadazimuth, besuretoadjustwithadhering thecasettetapeclosely
tothemechanism bypushing thecenterofcassettetapewithyour finger. (ShowninFig. 1)
1. Connect themeasuring instrumentas showninFig. 2.
2. Playback theazimuthadjustmentportion(8kHz, -20dB)oftest
tape(QZZCFM). Adjust theazimuthadjusting screw until the
outputs oftheL/Rcharemaximized. (RefertoFig. 3)
Make surethat thedifference inthepeak level betweentheleft and
rightchannelsdoes notexceed5dB.
3. Perform thesameadjustmentinreverse playback mode.
Check ofthelevel difference forwardand reverse directions
20