Panasonic SB-WA340 User manual

ORDERNO. MD0310441C2
ActiveSubwooferSystem
SB-WA340EBS1
Colour
(S1)...SilverType
1

SPECIFICATIONS
Specification
Activesubwoofer
Type 1way, 1speakersystem, bass-
ref.
Woofer 17 cm conetype
Impedance 4
Outputsound pressurelevel 80 dB/W (1.0m)
Frequencyrange 40 Hz-220 Hz(-16 dB)
45 Hz-180 Hz(-10 dB)
Dimensions(W xHxD) 160 x450 x424 mm
Mass Approx. 12 kg
General
Powersupply AC230-240 V, 50 Hz
Powerconsumption 250 W
Powerconsumption in standby
mode 0.7W
Note:
Specificationsaresubjectto changewithoutnotice.
Mass and dimensionsareapproximate.
System :SC-HT1000EBS MusicCenter:SA-HT1000EBS
Frontspeakers:SB-PF1000P-S (x2)
Centerspeaker:SB-PC1000P-S (x1)
Surround speakers:SB-PS1000P-S (x2)
ActiveSubwoofer:SB-WA340EBS1
System :SC-HT1000EGS MusicCenter:SA-HT1000EGS
Frontspeakers:SB-PF1000P-S (x2)
Centerspeaker:SB-PC1000P-S (x1)
Surround speakers:SB-PS1000P-S (x2)
ActiveSubwoofer:SB-WA340EBS1
1. SafetyPrecautions
1.1. GENERALGUIDELINES
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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. LEAKAGE CURRENTCOLDCHECK
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 5.2 . / Whenthe
exposedmetal does nothaveareturnpathtothechassis, the
reading must be . Fig. 1
1.1.2. LEAKAGE CURRENTHOTCHECK (See Figure1.)
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 showninFigure1.
3. Use anACvoltmeter, with1000 ohms/voltormoresensitivity, to
measurethepotential across theresistor.
4. Check eachexposedmetallicpart, and measurethevoltageat
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eachpoint.
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
milliamp. Incase ameasurementisoutsideofthelimits specified,
thereisapossibilityofashock hazard, and theequipmentshould
berepairedand recheckedbeforeitisreturnedtothecustomer.
2. Handling the Lead-free Solder
2.1. 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 pointthat standardsolder;
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.
3. BeforeRepairand Adjustment
DisconnectACpower, dischargePowerSupplyCapacitorsC546, C547, C548, C549 through a10
, 1Wresistor toground.
DONOTSHORT-CIRCUITDIRECTLY(withascrewdriverblade, for instance), as thismay destroy
solidstatedevices.
Afterrepairsarecompleted, restorepowergraduallyusing avariac, toavoidovercurrent.
Currentconsumption atAC230-240V, 50HzinNOSIGNALmodeshouldbe~500 mA.
4. 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 of
4

theamplifierareused.
Ifthisoccurs, followtheprocedureoutlines below:
1. Turnoff thepower.
2. Determinethecause oftheproblemand correct it.
3. Turnon thepoweronce againafteroneminute.
Note:
Whentheprotection circuitryfunctions, theunitwill notoperateunless thepowerisfirstturned
off and thenon again.
5. Connection of the SpeakerCables
-Besuretoconnect speakercables beforeconnecting theACpower
supplycord.
-Theloadimpedance ofanyspeakerusedwiththisunitmust be4 .
-Besuretoconnect thecablefromtherightspeakertotheright
terminal and thecablefromtheleft speakertotheleft terminal.
1. Stripoff theoutercovering, and twist thecenterconductor. Make
surethebareendsofthewires arenotunravelled. (Iftheyare,
twist themtightagain.)
2. Insertthewiretotherearpanel oftheunitand close thelever.
Notes :
-To preventdamagetocircuitry, nevershort-circuitpositive(+)and
negative(-) speakerwires.
-Besuretoconnect onlypositive(red)wires topositive(+)terminals
and negative(black) wires tonegative(-) terminals.
6. DisassemblyProcedure
“ATTENTIONSERVICER”
5

Somechassiscomponentsmay have sharp edges.
Becareful whendisassembling and servicing.
1. Thissection describes procedures forchecking theoperation of
themajorprintedcircuitboardsand replacing themain
components.
2. Forreassemblyafteroperation checks orreplacement, reverse the
respectiveprocedures.
Special reassemblyprocedures aredescribedonlywhenrequired.
3. Select itemsfromthefollowing index whenchecks orreplacement
arerequired.
Contents
-DisassemblyoftheSpeakerUnit
-MainComponentReplacementProcedures
6.1. DisassemblyoftheSpeakerUnit
Step1:Remove 2screwsfrom therearpanel.
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Step2:Remove all screws.
Step3:Remove theStand Base.
Step4:Remove all screwsfrom thespeakerbottom.
Step5:Pull thePower/AmpUnitas shown.
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Step6:Release theconnector CN506 and pull outthePower/AmpUnit.
Step7:PushtheNetFramefrom twoholes insidetheunit.
Step8:Remove theNetFrame.
Step9:Remove all thescrews.
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Step10:Remove theSpeaker.
Step11 &12:Remove all thescrews.
Step13:Release theconnector CN507.
Step14:Remove the2screws.
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Step15 &16:Remove all thescrews.
Step17:Place thePowerPCB as shownfor checking.
Checking for ACInletPCB.
6.2. MainComponentReplacementProcedures
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6.2.1. ReplacementofthePowerIC
Step1&2:Remove all thescrews.
Step3:DesolderthePowerICterminal and replace thecomponent.
7. Connection of the SpeakerWiring
8. Block Diagram
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9. SchematicDiagram
(All schematicdiagramsmay bemodifiedatanytimewiththedevelopmentofthenew
technology)
Note:
-Thevoltagevalueand waveformsarethereference voltageofthis
unitmeasuredbyDC electronicvoltmeter(high impedance) and
oscilloscopeon thebasisofchassis. Accordingly, theremayarise
someerrorinvoltagevalues and waveformsdepending upon the
internal impedance ofthetesterorthemeasuring unit.
-Importance safetynotice :
Components identifiedbymarkhavespecial characteristics
importantforsafety. Furthermore, special parts whichhave
purposes offire-retardant(resistors), high-qualitysound
(capacitors), low-noise (resistors), etc. areused. Whenreplacing
anyofcomponents, besuretouse onlymanufacturer'sspecified
parts shownintheparts list.
Caution !
IC, LSIand VLSIaresensitive tostaticelectricity.
Secondarytroublecanbepreventedbytaking careduring repair.
-Covertheparts boxes madeofplastics withaluminiumfoil.
-Putaconductivemat on theworktable.
-Ground thesoldering iron.
-DonottouchthepinsofIC, LSI orVLSI withfingersdirectly.
10. Printed Circuit Board
11. Wiring Connection Diagram
12. Illustration of IC’s, Transistorsand Diodes
13. PartsLocation and Replacement PartsList
Notes:
-Importantsafetynotice:
Components identifiedbymarkhavespecial characteristics
importantforsafety.
Furthermore, special parts whichhavepurposes offire-retardent
(resistors), high-qualitysound (capacitors), low noise (resistors),
etc areused.
12

Whenreplacing anyofthese components, besuretouse only
manufacturer’sspecifiedparts shownintheparts list.
-TheparenthesizedindicationsintheRemarks columnsspecifythe
areas orcolour. (Refertothecoverpageforarea orcolour)
Parts withoutthese indicationscanbeusedforall areas.
-Capacitorvalues areinmicrofarads( F)unless specified
otherwise, P=Pico-farads(pF), F=Farads.
-Resistance values areinohms, unless specifiedotherwise, 1K=
1,000 (OHM).
-Themarking (RTL)indicates that theRetention Timeislimitedfor
thisitems. Afterthediscontinuation ofthisassemblyin
production, theitemwill continuetobeavailableforaspecific
period oftime. Theretention period ofaavailabilityisdependent
on thetypeofassembly, and inaccordance withthelaws
governing partand product retention. Aftertheend ofthisperiod,
theassemblywill no longerbeavailable.
-[M]MarkingsintheRemarks columnsindicates parts suppliedby
PAVCSG.
-The“(SF)”markdenotes thestandardpart.
13.1. Cabinet
13.1.1. Cabinet Parts Location
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13.1.2. Cabinet Parts List
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Ref. No. PartNo. PartName& Description Remarks
CABINETAND CHASSIS
1RFKHBWA302-S SPK CABINETASS’Y [M]
1-1 RMG0520-KJ CATCH [M]
1-2 SRTF4B10F SCREW [M]
2RGK1601-S STAND ORNAMENT [M]
3RMQ0705 EVAPACKING [M]
4RKA0147-K FOOT [M]
5RYB0298A NETFRAMEASS’Y [M]
6XTB4+12AFZ SCREW (WOOFER) [M]
7RGNX0175M-S SPEC LABEL [M]
8REM0072-3 FAN [M]
9RGR0332A-KA REAR PANEL [M]
10 RHD30092 SCREW (MAIN PCB) [M]
11 RMR1485-W LED HOLDER [M]
12 XTB3+16AFZ SCREW [M]
13 XTB3+20JFZ SCREW [M]
14 XTBS3+8JFZ1 SCREW [M]
15 XTS4+20JFZ SCREW [M]
16 XTW3+15T SCREW [M]
17 XYC26+CJ6FZ SCREW [M]
18 RMC0158-S TR-FIXTURE [M]
19 RMN0203 PCBHOLDER [M]
20 SHE187-6J PCBSUPPORT [M]
13.2. Electrical Parts List
Ref. No. PartNo. PartName& Description Remarks
PRINTED CIRCUITBOARD
REPX0375C POWER P.C.B./ AC INLETP.C.B./ TRANSFORMER P.C.B./ LED
P.C.B. [M](RTL)
INTEGRATED CIRCUITS
IC501 RSN311W64B-P IC HIC [M]
IC502 C0AABB000055 IC AMP [M]
TRANSISTORS
Q501 KTC3199GRTA TRANSISTOR [M]
Q502 KTC3199GRTA TRANSISTOR [M]
Q503 KTC3199GRTA TRANSISTOR [M]
Q505 KTC3199GRTA TRANSISTOR [M]
Q506 KRA102MTA TRANSISTOR [M]
Q507 KTC3199GRTA TRANSISTOR [M]
Q508 KTA12710YTA TRANSISTOR [M]
Q509 KTC3199GRTA TRANSISTOR [M]
Q510 KTC3199GRTA TRANSISTOR [M]
Q511 KTC2026 TRANSISTOR [M]
Q513 KTC3199GRTA TRANSISTOR [M]
Q514 KTC3199GRTA TRANSISTOR [M]
Q515 KTC3199GRTA TRANSISTOR [M]
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Ref. No. PartNo. PartName& Description Remarks
Q516 KRC102MTA TRANSISTOR [M]
Q517 KTC2026 TRANSISTOR [M]
Q519 KTC3199GRTA TRANSISTOR [M]
Q520 KRA102MTA TRANSISTOR [M]
DIODES
D500 B0AACK000004 DIODE [M]
D501 B0JAPG000019 DIODE [M]
D502 B0JAPG000019 DIODE [M]
D503 MA2C700A0F DIODE [M]
D504 B0AACK000004 DIODE [M]
D505 B0AACK000004 DIODE [M]
D506 B0AACK000004 DIODE [M]
D507 B0AACK000004 DIODE [M]
D508 B0AACK000004 DIODE [M]
D509 B0BA5R100013 DIODE [M]
D510 B0BA9R600002 DIODE [M]
D511 B0HARM000017 DIODE [M]
D512 B0HARM000017 DIODE [M]
D513 B0HARM000017 DIODE [M]
D514 B0HARM000017 DIODE [M]
D515 B0EAKM000085 DIODE [M]
D516 B0EAKM000085 DIODE [M]
D517 B0HARM000017 DIODE [M]
D518 B0HARM000017 DIODE [M]
D519 B0AACK000004 DIODE [M]
D524 SLI325URCT31 DIODE [M]
D525 B0BA6R600008 DIODE [M]
D527 B0EAKM000085 DIODE [M]
D528 B0EAKM000085 DIODE [M]
D529 B0EAKM000085 DIODE [M]
D530 B0EAKM000085 DIODE [M]
D533 B0BA5R100013 DIODE [M]
CONNECTORS
CN501 K1FB125B0095 SYSTEMCONNECTOR [M]
CN502 K1KB07B00020 2PCONNECTOR [M]
CN503 K1KA12A00066 CONNECTOR [M]
CN506 K1KA03A00006 CONNECTOR [M]
CN507 K1KA02A00008 CONNECTOR [M]
CP502 K1KA07A00123 2PCONNECTOR [M]
COILS& TRANSFORMERS
L500 RLQZ371 LINEFILTER [M]
L501 G0AR76Y00001 CHOKECOIL [M]
L502 G0AR76Y00001 CHOKECOIL [M]
L503 G0AR76Y00001 CHOKECOIL [M]
L504 G0AR76Y00001 CHOKECOIL [M]
L505 G0AR76Y00001 CHOKECOIL [M]
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Ref. No. PartNo. PartName& Description Remarks
T501 G4C7AGG00001 POWER TRANSFORMER [M]
T502 G4C2AAJ00005 BACK-UPTRANSFORMER [M]
COMPONENTCOMBINATION
Z501 ERZV10V511CS ZENER [M]
SPEAKER
SP1 EAST17PL21B6 SPEAKER [M]
RELAY
RLY501 RSY0040M-0 PRIMARYRELAY [M]
FUSES
F1 K5D202BK0005 250V2AFUSE [M]
FUSE HOLDERS
FC501 EYF52BC FUSE HOLDER [M]
FC502 EYF52BC FUSE HOLDER [M]
FUSE PROTECTOR
FP1 K5G502AA0002 5AFUSE PROTECTOR [M]
HOLDERS
H500 K1YF12000002 12PWIREHOLDER [M]
H505A RMR0312 3PCABLEHOLDER [M]
H505B RMR0312 3PCABLEHOLDER [M]
JACKS
JK500 K2AA2B000004 JK AC INLET [M]
JK501 K4BC06B00043 JK [M]
JK502 K4BC04B00075 JK SPEAKER [M]
EARTH TERMINAL
E500 K4CZ01000027 TERMINAL [M]
E501 K4CZ01000027 TERMINAL [M]
WIRES
W1 REE1205 WIREUNIT [M]
W2 REE1204 WIREUNIT [M]
W500 REX1146 WIREUNIT [M]
W505 RWJ1103320XX 3PSTRAND TYPE WIRE [M]
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19

Ref. No. PartNo. PartName& Description Remarks
RESISTORS
R401 ERDS2TJ224T 220K 1/4W [M]
R402 ERDS2TJ102T 1K 1/4W [M]
R403 ERDS2TJ104T 100K 1/4W [M]
R501 ERDS2TJ472T 4.7K 1/4W [M]
R502 ERDS2TJ472T 4.7K 1/4W [M]
R503 ERDS2TJ153T 15K 1/4W [M]
R504 ERDS2TJ153T 15K 1/4W [M]
R505 ERDS2TJ153T 15K 1/4W [M]
R506 ERDS2TJ153T 15K 1/4W [M]
R507 ERDS2TJ392T 3.9K 1/4W [M]
R508 ERDS2TJ392T 3.9K 1/4W [M]
R509 ERDS2TJ472T 4.7K 1/4W [M]
R510 ERDS2TJ472T 4.7K 1/4W [M]
R511 ERDS2TJ153T 15K 1/4W [M]
R512 ERDS2TJ153T 15K 1/4W [M]
R513 ERDS2TJ563T 56K 1/4W [M]
R514 ERDS2TJ563T 56K 1/4W [M]
R515 ERDS2TJ563T 56K 1/4W [M]
R516 ERDS2TJ563T 56K 1/4W [M]
R517 ERDS2TJ563T 56K 1/4W [M]
R518 ERDS2TJ563T 56K 1/4W [M]
R519 ERDS2TJ824T 820K 1/4W [M]
R520 ERDS2TJ223T 22K 1/4W [M]
R521 ERDS2TJ103T 10K 1/4W [M]
R522 ERDS2TJ273T 27K 1/4W [M]
R523 ERDS2TJ124T 120K 1/4W [M]
R524 ERDS2TJ124T 120K 1/4W [M]
R525 ERDS2TJ154T 150K 1/4W [M]
R526 ERDS2TJ124T 120K 1/4W [M]
R527 ERDS2TJ124T 120K 1/4W [M]
R528 ERDS2TJ154T 150K 1/4W [M]
R529 ERDS2TJ223T 22K 1/4W [M]
R530 ERD25FVJ1R0T 1 1/4W [M]
R531 ERD25FVJ1R0T 1 1/4W [M]
R532 ERDS2TJ472T 4.7K 1/4W [M]
R533 ERDS1FVJ100T 10 1/2W [M]
R534 ERDS1FVJ100T 10 1/2W [M]
R535 ERDS1FVJ100T 10 1/2W [M]
R536 ERDS1FVJ100T 10 1/2W [M]
R537 ERDS1FVJ100T 10 1/2W [M]
R538 ERDS1FVJ100T 10 1/2W [M]
R539 ERDS2TJ101T 100 1/4W [M]
R540 ERDS2TJ101T 100 1/4W [M]
R541 ERDS2TJ101T 100 1/4W [M]
R542 ERDS2TJ101T 100 1/4W [M]
R543 ERDS2TJ101T 100 1/4W [M]
R544 ERDS2TJ101T 100 1/4W [M]
R545 ERDS2TJ224T 220K 1/4W [M]
R546 ERDS2TJ102T 1K 1/4W [M]
R547 ERDS2TJ394T 390K 1/4W [M]
R548 ERDS2TJ334T 330K 1/4W [M]
R549 ERDS2TJ473T 47K 1/4W [M]
20