Panasonic SB-WA840EE


Чтобы посмотреть этот PDF файл с форматированием и разметкой, скачайте его и откройте на своем компьютере.
5 ConnectionoftheSpeakerCables
6 DisassemblyProcedure
6.1. Disassemblyflowchart
6.2. DisassemblyoftheSpeakerUnitandCheckingofthe
P.C.B.
7 VoltageMeasurementandWaveformChart
7.1. VoltageMeasurement
7.2. WaveformChart
8 BlockDiagram
9 NotesofSchematicDiagram
10 SchematicDiagram
10.1. PowerCircuit
11 PrintedCircuitBoard
11.1. PowerP.C.B.
12 WiringConnectionDiagram
13 IllustrationofICs,TransistorsandDiodes
14 PartsLocationandReplacementPartsList
14.2. ElectricalPartsList
14.3. PackingMaterials&AccessoriesPartsList
14.4. Packaging
SB-WA840EE
Fig.1
1.1.2.
LEAKAGE
CURRENTHOTCHECK(SeeFigure1.)
SB-WA840EE
2 BeforeRepairandAdjustment
DisconnectACpower,dischargePowerSupplyCapacitorsC546~C549througha10
,1Wresistortoground.
DONOTSHORT-CIRCUITDIRECTLY(withascrewdriverblade,forinstance),asthismaydestroysolidstatedevices.
Afterrepairsarecompleted,restorepowergraduallyusingavariac,toavoidovercurrent.
CurrentconsumptionatAC230V,50HzinNOSIGNALmodeshouldbe~410mA.
3 ProtectionCircuitry
Theprotectioncircuitrymayhaveoperatedifeitherofthefollowingconditionsarenoticed:
Nosoundisheardwhenthepoweristurnedon.
Stopsduringaperformance.
Thefunctionofthiscircuitryistopreventcircuitrydamageif,forexample,thepositiveandnegativespeakerconnectionwiresare
shorted,orifspeakersystemswithanimpedancelessthantheindicatedratedimpedanceoftheamplifierareused.
Ifthisoccurs,followtheprocedureoutlinesbelow:
1. Turnoffthepower.
SB-WA840EE
5 ConnectionoftheSpeakerCables
BesuretoconnectspeakercablesbeforeconnectingtheACpowersupplycord.
Theloadimpedanceofanyspeakerusedwiththisunitmustbe4
Besuretoconnectthecablefromtherightspeakertotherightterminalandthecablefromtheleftspeakertotheleftterminal.
1. Stripofftheoutercovering,andtwistthecenterconductor.Makesurethebareendsofthewiresarenotunravelled.(Iftheyare,
twistthemtightagain.)
2. Insertthewiretotherearpaneloftheunitandclosethelever.
SB-WA840EE
Somechassiscomponentsmayhavesharpedges.
Becarefulwhendisassemblingandservicing.
6 DisassemblyProcedure
ATTENTIONSERVICER
1.
Thissectiondescribesproceduresforcheckingtheoperationofthemajorprintedcircuitboardsandreplacingthe
maincomponents.
2.
Forreassemblyafteroperationchecksorreplacement,reversetherespectiveprocedures.
Specialreassemblyproceduresaredescribed
whenrequired.
3.
Selectitemsfromthefollowingindexwhenchecksorreplacementarerequired.
DisassemblyoftheFrontPanelUnit
Disassemblyofthe
Woofer1
Disassemblyofthe
Woofer2
DisassemblyofthePowerAmpUnit
DisassemblyoftheRearPanelandFanUnit
SB-WA840EE
6.1.2. DisassemblyofRear
Assembly
SB-WA840EE
6.2.1. DisassemblyoftheFrontPanel
Step1:
Steps2:
Step3:
UsethescrewdrivertoslightlyliftuptheFrontPanel
Unitasarrowshown.
BecarefulwiththebosseswhicharegluedtotheSubwoofer
CabinetAssembly.
Step4:
RemovetheFrontPanelUnit
fromthe
Subwoofer
CabinetAssembly.
6.2. DisassemblyoftheSpeakerUnitandCheckingoftheP.C.B.
SB-WA840EE
AssemblyoftheFrontPanelUnit.
Step1:
Cleanupalltheglueatthe6Bosspointsand
replacewiththenormalglue.
Step2:
ReplacetheFrontPanelUnitfirmlybacktothe
cabinet.
6.2.2. DisassemblyoftheWoofer1
FollowStep(1)toStep(4)describedinsection6.2.1.
Step1:
Remove4screwsfromthe
Woofer1.
Step2:
Removethe
Woofer1by
SB-WA840EE
Step1:
Remove4screwsfromthe
Woofer2.
Step2:
Removethe
Woofer2by
Step1:
Laythespeakerunitasshown.Remove6screwsfrom
thebottomofthewooferunit.
Step2:
Remove3screwsfromtherearpanel.
SB-WA840EE
Step3:
PulloutthePowerAmpUnitslightlyasshown.
Step4:
DisconnectconnectorCN506.
Step5:
PullouttheentirePowerAmpUnit.
6.2.5. DisassemblyoftheRearPaneland
FanUnit
FollowStep(1)toStep(5)describedinsection6.2.4.
Step1&2:
Remove7screwsfromtherearpanel.
Step3:
Step4:
Remove4screwsfromtherearpanel.
SB-WA840EE
Step5:
LaytherearpanelandremovetheFanUnitasarrow
shown.
6.2.6. Disassemblyandcheckingofthe
Step1:
RemovetheP.C.B.supportbypushingtheclawsas
arrowshown.
Step2:
Disconnecttheconnector(CN502).
Step3:
Step4&5:
Remove6screws.
Step6:
Remove4screws.
Step7:
SB-WA840EE
6.2.7. ReplacementofPowerICand
Transistor
FollowStep(1)toStep(5)describedinsection6.2.4.
FollowStep(1)toStep(3)describedinsection6.2.5.
Step1:
DesolderthePowerICandTransistorterminal.
Step2:
Remove2screwsandPowerIC501.
Step3:
RemovethescrewandTransistorholder.
Step4:
SB-WA840EE
7 VoltageMeasurementandWaveformChart
IndicatedvoltagevaluesarethestandardvaluesfortheunitmeasuredbytheDCelectroniccircuittester(high-impedance)
withthechassistakenasstandard.
Therefore,theremayexistsomeerrorsinthevoltagevalues,dependingontheinternalimpedanceoftheDCcircuittester.
Circuitvoltageandwaveformdescribedhereinshallberegardedasreferenceinformationwhenprobingdefectpoint
becauseitmaydifferfromactualmeasuringvalueduetodifferenceofMeasuringinstrumentanditsmeasuringcondition
andproductitself.
7.1. VoltageMeasurement
MODEECBECBECBECB
CD PLAY0.10.10.803.7-0.26.013.66.60.10.80
STANDBY06.0003.6-0.36.011.36.5000
1234567891011121314151617181920
CD PLAY0067.5-67.6033.2-33.300.1
-0.233.5-33.6-10.50067.6
STANDBY0016.80.4
MODE212223242526
CD PLAY-67.5
STANDBY0.4
MODEECBECB123ECBECB
CD PLAY05.2005.2000-1.500.800.800.8
STANDBY00.7000.700000-0.30-0.30-0.3
MODEECBECBECBECB ECB
CD PLAY5.233.55.6-11.3-33.5-11.90-1.500-11.30.2 -11.35.0-11.3
STANDBY0.4-0.3-0.300.10.100000000.40
MODEECBECBECBECB
CD PLAY5.1-4.74.75.2-00.4-0.20.35.20
STANDBY0.4000.50.4000.300.30.70
Q520Q552
7.2. WaveformChart
CD PLAY
CD PLAY
CD PLAY
CD PLAY
CD PLAY
CD PLAY
CD PLAY
CD PLAY
SB-WA840EE
8 BlockDiagram
FILTER
222318
15361
147
12(11)24
INTERFACE
FL2
VOLTAGE
REGULATOR
D513-D515,
D517
D527~D530
RSN311W64D-P
FAN
MOTOR
( ) Indicates Pin No. of Right ChannelNote : Signal Lines are applicable to the Left Channel only.
: MAIN SIGNAL LINE
SB-WA840EE
(Allschematicdiagramsmaybemodifiedatanytimewiththe
developmentofthenewtechno
Thevoltagevalueandwaveformsarethereferencevoltage
ofthisunitmeasuredbyDCelectronicvoltmeter(high
impedance)andoscilloscopeonthebasisofchassis.
Accordingly,theremayarisesomeerrorinvoltagevalues
andwaveformsdependingupontheinternalimpedanceof
thetesterorthemeasuringunit.
markhavespecial
SB-WA840EE
10 SchematicDiagram
10.1. PowerCircuit
RELAY
C511 22P
R511
B1AACF000117
B1AACF000117
B1AACF000117
RSN311W64D-P
24
23
22
21
20
19
18
17
16
15
14
13
12
2
4
6
8
9
7
5
3
1
2
: MAIN SIGNAL LINE
: -B SIGNAL LINE
TO FAN
TO
MAIN CIRCUIT
100
R584
47K
220K
50V 10P
C577
16V 10
10K
C647
6.3V 470
B0AACK000004
B0EAKM000117
FAN MOTOR DRIVE
FAN MOTOR DRIVE
FAN MOTOR DRIVE
0.01
B0BA01100004
25V 330
220K
1K
4.7K
FAN MOTOR DRIVE
FAN MOTOR DRIVE
100K
C578
0.01
0.01
2.2M
4.7K
R581
6.8K
50V 2.2
22K
C514 6.3V100
R528
150K
D508
26252423222120191817161514131211109
FAN MOTOR DRIVE
SCHEMATIC DIAGRAM-1
B0AACK000004
R549 3.9K
390K
C534
50V33
R548
330K
SB-WA840EE
Q511
C550 0.01
B0BA01100004
D511
4
6
7
5
3
1
SCHEMATIC
12
2
4
6
8
9
7
5
1
1
2
4
1
2
3
4
B1BCCG000023
R610
4.7
R600
47K
R601
47K
0.1
C524
0.1
C526
0.1
C527
0.1
C528
0.047
SB-WA840EE
250V 2.0A
C555
35V4.7
FC501
10K
D500
B1GACFJJ0018
PCONT
VOLTAGE REGULATOR
B1AACF000117
ELF15N035AN
W1
W2
R401
220K
R590
1K
Q519
G4C7AGK00005
D527~D530
G4C2AAJ00005
2
4
6
8
9
7
5
3
1
4
6
7
5
3
1
SCHEMATIC DIAGRAM-3
SCHEMATIC
SCHEMATIC
150
AC IN
230V / 50Hz
SB-WA840EE
11 PrintedCircuitBoard
11.1. PowerP.C.B.
ABCDEFG
65432
SB-WA840EE
GHIJKLM
C547
Q505
J504
J508
R515
R525
C509
C510
C512
R516
R526
R514
R524
C506
C502
C501
C504
R510
R509
R512
R508
R503
R504
R527
R517
R528
R506
R501
R513
R523
R570
R532
J546
J547
J548
D508
1
J563
R519
R602
R562
R559
J555
J556
R560
C551
R600
R568
C543
D564
Q520
Q501
R520
C507
C545
D561
D566
D565
J588
J579
J565
J511
J564
J598
97
J541
J584
J587
J544
J520
J549
J552
J542
J566
J535
R583
R581
R603
R558
D562
D557
D560
C553
C554
Q557
C579
C575
Q512
R609
D502
D511
C516
C515
D513
D514
D517
J633
J629
J632
J631
J628
J509
12
2
3
4
5
6
7
10
11
B
E
C
B
E
C
B
E
C
B
E
C
B
E
C
B
E
C
B
E
C
B
E
C
B
E
C
B
E
C
B
E
C
B
E
C
SB-WA840EE
ABCDEFG
AC VOLTAGE LINE.
PLEASE DO NOT TOUCH THIS P.C.B
SECONDARYPRIMARY
123456789101112
SB-WA840EE
12 WiringConnectionDiagram
.
1
+
SOLDER SIDE
CN502
POWER P.C.B.
.
1
24
.
2
JK501
1
1
2
RIGHT SPEAKER
FRONT RIGHT
FRONT LEFT
LEFT SPEAKER
SB-WA840EE
13 IllustrationofICs,TransistorsandDiodes
Ca
Cathode
Ca
Anode
C
B
26
B1AACF000117
B
E
B1BCCG000023
Anode
B
B0BA01100004
Cathode
E
B
Cathode
SB-WA840EE
14 PartsLocationandReplacementPartsList
SB-WA840EE
SB-WA840EE
SB-WA840EE
14.1.2. CabinetPartsList
Ref.No.
PartNo.
PartName&Description
SUBWOOFERCABASSY
1-1
1-2
LED(RED)
1-3
RGKX0284-H
1-4
WOODSCREW(TBZP)
1-5
RKAX0019-KJ
LEGCUSHION
RYQX0167A-S
FRONTPANELUNIT
EVAPACKING(WOOFER)
RGNX0277G-S
SPECLABEL
REM0072-4
RGRX0040W-H
REARPANEL
RHD30065-1S
RHD30090-1
RHD30119-S
RMC0158-S2
TR-FIXTURE
RMG0606-K
FANINSULATOR
PCBHOLDER
WOOFERSPACER
EVAPACKING(WOOFERSPACER)
SCREW(TBZP)
SB-WA840EE
14.2. ElectricalPartsList
Ref.No.
PartNo.
PartName&Description
PRINTEDCIRCUITBOARD
[M]RTL
INTEGRATEDCIRCUITS
RSN311W64D-P
ICHIC(PBF)
SYSTEMCONNECTOR
7PCONNECTOR
12PCONNECTOR
4PCONNECTOR
Ref.No.
PartNo.
PartName&Description
2PCONNECTOR
7PCONNECTOR
COILS&TRANSFORMERS
LINEFILTER
CHOKECOIL
CHOKECOIL
CHOKECOIL
CHOKECOIL
CHOKECOIL
POWERTRANSFORMER
SUB-TRANSFORMER
COMPONENTCOMBINATION
POWERRELAY
250V2AFUSE
FUSEHOLDERS
FUSEHOLDER
FUSEHOLDER
FUSEPROTECTOR
5AFUSEPROTECTOR
12PWIREHOLDER
JKSPEAKERTERMINAL
JKSPEAKER
EARTHTERMINAL
PRIMARYWIRE(BROWN)
PRIMARYWIRE(BLUE)
220K1/4W
1K1/4W
4.7K1/4W
4.7K1/4W
15K1/4W
15K1/4W
15K1/4W
15K1/4W
3.9K1/4W
3.9K1/4W
SB-WA840EE
Ref.No.
PartNo.
PartName&Description
4.7K1/4W
4.7K1/4W
15K1/4W
15K1/4W
56K1/4W
56K1/4W
56K1/4W
56K1/4W
56K1/4W
56K1/4W
820K1/4W
22K1/4W
10K1/4W
27K1/4W
120K1/4W
120K1/4W
150K1/4W
120K1/4W
120K1/4W
150K1/4W
22K1/4W
11/4W
11/4W
4.7K1/4W
101/2W
101/2W
101/2W
101/2W
101/2W
101/2W
220K1/4W
1K1/4W
390K1/4W
330K1/4W
3.9K1/4W
100K1/4W
10K1/4W
1501/4W
3.9K1/2W
4.7K1/4W
1K1/2W
220K1/4W
3.9K1/2W
1.5K1/2W
1501/4W
1.8K1/2W
10K1/4W
1.8K1/2W
1.5K1/4W
10K1/4W
3.3K1/4W
221/4W
6.8K1/4W
220K1/4W
1001/4W
47K1/4W
2.7K1/4W
1501/4W
10K1/4W
1K1/4W
47K1/4W
47K1/4W
4.7K1/4W
10K1/4W
2.2M1/4W
222W
1.5K1/2W
4.71/4W
101/4W
101/4W
101/4W
101/4W
101/4W
Ref.No.
PartNo.
PartName&Description
1000P50V
1000P50V
1000P50V
1000P50V
1000P50V
1000P50V
18P50V
18P50V
22P50V
22P50V
22P50V
22P50V
0.04750V
1006.3V
0.01500V
0.01500V
0.0116V
0.04750V
0.04750V
0.04750V
0.04750V
0.04750V
0.04750V
0.0150V
0.0150V
0.150V
0.150V
0.04750V
0.150V
1000P50V
1000P50V
1000P50V
1000P50V
3350V
1000P50V
10050V
0.150V
3300100V
4700100V
4700100V
3300100V
0.0116V
0.0150V
0.1100V
0.1100V
4.735V
0.0150V
2216V
100016V
0.0150V
1050V
0.04750V
33025V
10050V
1000P50V
0.0150V
0.0150V
10P50V
1016V
0.0150V
0.0150V
2.250V
4706.3V
SB-WA840EE
Ref.No.
PartNo.
PartName&Description
PACKINGMATERIALS
Ref.No.
PartNo.
PartName&Description
MIRAMATBAG
14.3. PackingMaterials&AccessoriesPartsList
14.4. Packaging
SB-WA840EE
FLE0503/J/A/S/E/N

Приложенные файлы

  • pdf 11239683
    Размер файла: 2 MB Загрузок: 0

Добавить комментарий