Panasonic SA-PM12P User manual

ORDERNO. MD0201013C1
A6
CD StereoSystem
SA-PM12P
Color
(K)... Black Type
TAPE SECTION:
AR2MECHANISMSERIES
CD SECTION:
RAE0152Z-3 TRAVERSE DECK SERIES
SPECIFICATIONS
Specifications

AMPLIFIERSECTION
Power output
10%Total harmonicdistortion
1kHz, both channelsdriven 45 Wper channel (6)
70 Hz-16 kHz, both channels
driven 40 Wper channel (6)
Inputsensitivity
AUX 250 mV
InputImpedance
AUX 13 k
FMTUNERSECTION
Frequencyrange 87.9-107.9MHz(200 kHzsteps)
87.5-108.0MHz(100 kHzsteps)
Sensitivity 2.5V(IHF)
S/N26 dB 2.2V
Antennaterminal(s) 75 (unbalanced)
AMTUNERSECTION
Frequencyrange
AM 520-1710 kHz(10 kHzsteps)
Sensitivity
AM
S/N20 dB(at1000kHz) 560 V/m
CASSETTEDECK SECTION
Track system 4track, 2channel
Heads
Record/playback Solid permalloyhead
Erasure Doublegap ferritehead
Motor DC servo motor
Recording system ACbias 100 kHz
Erasing system ACerase 100 kHz
Tapespeed 4.8cm/s
Frequencyresponse (+3 dB, -6dBatDECK OUT)
NORMAL (TYPE I) 50 Hz-13 kHz
HIGH(TYPE II) 50 Hz-13 kHz
S/N 50 dB(Aweighted)
Wowand flutter 0.18 %(WRMS)
Fastforward and rewind time Approx. 120 secondswith
C-60 cassettetape
CD SECTION
Sampling frequency 44.1kHz
Decoding 16 bitlinear
Beam source/wavelength Semiconductorlaser/780 nm
Number ofchannels Stereo
Frequencyresponse 20 Hz-20 kHz(+1, -2dB)
Wowand flutter Belowmeasurablelimit
Digital filter 8fs
D/Aconverter MASH(1bitDAC)
GENERAL

Power supply AC120 V, 60Hz
Power consumption 125 W
Standby 0.6W
Dimensions(WxHxD) 200 x260 x345 mm
(77/8”x10 1/4”x13 19/32”)
Mass 5.6kg (12.3lb)
SYSTEM
SC-PM12(P) MusicCenter:SA-PM12(P)
Speaker:SB-PM11(P)
Notes:
1. Specificationsaresubject to changewithout notice. Mass and
dimensionsareapproximate.
2. Total harmonicdistortion ismeasuredbythe digital spectrumanalyzer.
2002 Matsushita Electronics (S)Pte. Ltd. All rights reserved.
Unauthorizedcopying and distribution isaviolation oflaw.
1. SafetyPrecaution
(This “SafetyPrecaution”is appliedonlyinU.S.A.)
1. Beforeservicing, unplug thepowercord topreventanelectric
shock.
2. Whenreplacing parts, use onlymanufacturer’srecommended
components for safety.
3. Check thecondition ofthepowercord. Replace ifwearor
damageisevident.
4. Afterservicing, besuretorestoretheleaddress, insulation
barriers, insulation papers, shields, etc.
5. Beforereturning theservicedequipmenttothecustomer, besure
tomake thefollowing insulation resistance test to
preventthecustomerfrom being exposedtoashock hazard.
1.1. Insulation Resistance Test
1. Unplug thepowercord and shortthetwoprongsoftheplug with
ajumperwire.

2. Turn on thepowerswitch.
3. Measuretheresistance valuewithohmmeterbetweenthejumper
ACplug and eachexposedmetal cabinet part, suchas
screwheads, antenna, control shafts, handlebrackets, etc.
Equipmentwithantennaterminalsshouldreadbetween3M and
5.2M toall exposedparts*.(Fig.1)
Equipmentwithoutantennaterminalsshouldreadapproximately
infinitytoall exposedparts.(Fig.2)
*Note:Someexposedparts maybeisolatedfrom thechassisby
design. These will readinfinity.
4. Ifthemeasurementisoutsidethespecifiedlimits, thereisa
possibilityofashock hazard. Theequipmentshouldberepaired
and recheckedbeforeitisreturnedtothecustomer.

2. Before Repairand Adjustment
DisconnectAC power, discharge PowerSupplyCapacitors C506, C507 and C508 through a 10
, 5Wresistorto ground.
DONOTSHORT-CIRCUITDIRECTLY(with a screwdriverblade, forinstance), as this may
destroysolidstate devices.
Afterrepairs are completed, restore powergraduallyusing a variac, to avoidovercurrent.
Current consumption atAC 120V, 60 HzinNOSIGNALmode shouldbe ~420mA.
3. Protection Circuitry
The protection circuitrymayhave operatedifeitherof the following conditions are noticed:
-Nosound isheard whenthepoweristurnedon.
-Sound stopsduring aperformance.
The function of this circuitryis to prevent circuitrydamage if, forexample, the positive and
negative speakerconnection wires are
“shorted”, orifspeakersystems with animpedance less thanthe indicatedratedimpedance of
the amplifierare used.
Ifthis occurs, followthe procedure outlines below:
1. Turn off thepower.
2. Determinethecause oftheproblemand correct it.
3. Turn on thepoweronce againafteroneminute.
Note :
Whenthe protection circuitryfunctions, the unitwill not operate unless the poweris firstturned

off and thenon again.
4. Accessories Remote Control Transmitter
FMindoorantenna
AC powersupplycord

AMLoop antenna
5. Handling Precautions For Traverse Deck
The laserdiode inthe traverse deck (optical pickup) maybreak downdue to potential difference
causedbystatic electricityof clothes orhumanbody.
So, be careful of electrostatic breakdownduring repairof the traverse deck (optical pickup).
-Handling oftraverse 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
damagetothelaserdiode.Toconnect tothePCboard, besureto
openbyremoving thesolderbuild-up, and finishtheworkquickly.
3. Take carenottoapplyexcessivestress totheflexibleboard
(FFC).
4. Donotturn thevariableresistor (laserpoweradjustment). Ithas
alreadybeenadjusted.

-Grounding for electrostaticbreakdownprevention
1. Humanbodygrounding
Use theanti-staticwrist straptodischargethestaticelectricity
from your body.
2. Worktablegrounding
Putaconductivematerial (sheet) or steel sheet on thearea
wherethetraverse deck (optical pickup)isplaced, and ground
thesheet.
Caution :
Thestaticelectricityofyour clothes will notbegroundedthrough
thewrist strap. So, take carenottolet your clothes touchthe
traverse deck (optical pickup).
Caution whenReplacing the Traverse Deck :
Thetraverse deck has ashortpointshortedwithsoldertoprotect
thelaerdiodeagainst electroststics breakdown. Besureto
removethesolderfrom theshortpointbeforemaking
connections.

6. Precaution ofLaser Diode
CAUTION:
This unitutilizes a class 1 laser.
Invisible laserradiation is emittedfrom the optical pickup lens.
Whenthe unitis turnedon:
1. Donotlookdirectlyintothepick up lens.
2. Donotuse optical instruments tolookat thepick up lens.
3. Donotadjust thepreset variableresistor on thepickup lens.
4. Donotdisassembletheoptical pick up unit.
5. Iftheoptical pick up isreplaced, use themanufacturer’sspecified
replacementpick up only.
6. Use ofcontrol or adjustments or performance ofprocedures
otherthanthose specifiedhereinmayresultinhazardous
radiation exposure.
CAUTION!
THISPRODUCTUTILIZES ALASER.
USE OF CONTROLSOR ADJUSTMENTSOR PERFORMANCEOF PROCEDURES OTHER THAN
THOSE
SPECIFIED HEREIN MAYRESULTIN HAZARDOUSRADIATION EXPOSURE.
7. Operation Procedures

8. Operation Checks and MainComponent
ReplacementProcedures

“ATTENTION SERVICER”
Some chassis components mayhave sharpedges.
Be careful whendisassembling and servicing.
1. Thissection describes procedures for checking theoperation of
themajor printedcircuitboardsand replacing themain
components.
2. For reassemblyafteroperation checks or replacement, reverse
therespectiveprocedures.
Special reassemblyprocedures aredescribedonlywhenrequired.
3. Select itemsfrom thefollowing index whenchecks or
replacementarerequired.
Contents
-Disassemblyand assemblymainunit
1. Checking oftheMain, Panel, Deck and PowerP.C.B.
-MainComponentReplacementProcedures
1. ReplacementoftheTraverse Deck.
2. ReplacementofthePowerAmplifierIC.
-Disassemblyand assemblyoftheTraverse Unit
-Disassemblyand assemblyoftheDisc Tray
Warning:
Thisproduct uses alaserdiode. Refertocaution statement
Precaution ofLaserDiode.

8.1. Checking Procedurefor eachmajor P.C.B.
Step1 Remove 3 screws eachside and 5 screws atrearpanel.
Step2 Remove the Top Cabinet
Step3 Pushcatches eachside. Remove 2 screws on top to release CD lid.

Step4 Remove the CD changerbase togetherwith the CD changer.
Step5 Release 10 screws atrearpanel.
-Checking for MainP.C.B, Panel P.C.B. and TransformerP.C.B
Step1Remove2screwseachside.

-Checking for PowerP.C.B.
8.2. MainComponentReplacementProcedures
1. Replacement of the Traverse Deck
Step1 Followthe procedures in‘Disassemblyof the Traverse Unit’ (Step1 -Step4 )

Step3 Desolderthe 4 legs of the 2 motors and pull out the ServoP.C.B.
Step4 Widenthe 3 bosses with a flatscrewdriverand pull out the 3 pins. Thenremove the
Traverse Deck.

Step5 Remove the flexible cable CN 701.
-Removal oftheflexiblecable. Pushthetop oftheconnector inthe
direction ofthearrow1, and thenpull outtheflexiblecableinthe
direction ofthearrow2.
Note:
Inserta shortpininto the flexible cable fortraverse unit.
-Installation oftheCD servoP.C.B. afterreplacement
Step1 Connectthe FFC board.
Step2 Install the CD servoP.C.B. inthe traverse deck assembly.
Note:

Before installing the CD servoP.C.B., move the optical pickup towards the outeredge from the
marking (black triangle). [Otherwise, the resetdetectswitch(S701)mountedon the CD servo
P.C.B. maybe damaged.]
2. Replacement of the PowerAmplifierIC
Step1 Followthe procedures in‘Checking Procedure foreachmajorP.C.B.’ (Step1 -Step6 ).
Step2 Remove the wires atCN302, CN303 and CN304 and pull out the MainP.C.B.

Step3 Remove 2 screws fixedto the PowerAmplifierIC.
Step4 Unsolderthe terminals of PowerAmp IC and replace the respective component.
8.3. Disassemblyand assemblyoftheTraverse Unit
Step1 Pushthe leverfrom position Ato B.
Step2 Pull the stopper(black)inthe direction of arrow1 and pushthe leverinthe direction of
arrow2.
Step3 Pushthe stpeer(black)downuntil the white leverejectout.

Step4 Lift up the traverse unitand slide out the unitas shown.
-ReplacementofTraverse Unit
Step1 Place the traverse unitas shown.
Step2 Press inthe levershaft inthe direction of arrow1 as shownand pushthe traverse unit
into the position inthe direction of arrow2.
Step3 Pull the stopperinthe direction of arrow1 and release the leverinthe direction of arrow

2 as shown.
Step4 Pull out the trayhalfwayand pushitback fully.
Step5 Pushthe leverto the initial position indicated‘I---I’.
8.4. Disassemblyand assemblyoftheDisc Tray
Step2 With lifting the clawinthe direction of arrow1, drawthe clamp SWP.C.B. inthe direction
of arrow2.
Step3 Remove the mechanismcover.