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