Panasonic SB-WA530EB User manual

nActive subwoofer
Type 1 way, 2 speaker system, Bass
reflex
Speaker unit(s)
1. Woofer 13 cm Cone type, 4Ω
2. Woofer 13 cm Cone type, 4Ω
Output sound pressure level 80 dB/W (1.0 m)
Frequency range 40 Hz-220 Hz (-16 dB)
45 Hz-180 Hz (-10 dB)
Dimensions (W x H x D) 201.5 x 368.2 x 491.5 mm
Mass 11.3 kg
nGeneral
Power consumption 250 W
1 Safety Precautions 3
1.1. GENERAL GUIDELINES 3
2 Caution for AC Mains Lead 4
3 Handling the Lead-free Solder 5
3.1. About lead free solder (PbF) 5
©2005 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SB-WA530EB
Colour
(S)... Silver Type
Power supply AC 230-240V, 50Hz
Note :
Specifications are subject to change without notice.
Mass and dimensions are approximate.
nSystem : SC-HT530(EB) Music Center : SA-HT530(EB)
Satellite Speakers : SB-HT530(EB)
Active Subwoofer : SB-WA530(EB)
4 Before Repair and Adjustment 5
5 Protection Circuitry 5
6 Connection of the Speaker Cables 6
7 Disassembly Procedure 7
7.1. Disassembly flow chart 7
Active Subwoofer System
Specification
CONTENTS
Page Page
ORDER NO. MD0502044C2

7.2. Disassembly of the Speaker Unit and Checking of the
P.C.B. 8
8 Voltage Measurement and Waveform Chart 14
8.1. Voltage Measurement 14
8.2. Waveform 14
9 Block Diagram 15
10 Notes of Schematic Diagram 16
11 Schematic Diagram 17
11.1. Power Circuit 17
11.2. Transformer Circuit and AC Inlet Circuit 19
12 Printed Circuit Board 20
12.1. Power P.C.B. 20
12.2. AC Inlet P.C.B. and Transformer P.C.B. 22
13 Wiring Connection Diagram 23
14 Illustration of ICs, Transistors and Diodes 24
15 Parts Location and Replacement Parts List 25
15.1. Cabinet 26
15.2. Electrical Parts List 29
15.3. Packing Materials & Accessories Parts List 31
15.4. Packaging 31
2
SB-WA530EB

1 Safety Precautions
1.1. GENERAL GUIDELINES
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
3. After servicing, check for leakage current to prevent from being exposed to shock hazards.
1.1.1. LEAKAGE CURRENT COLD CHECK
1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on
the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the
chassis, the reading should be between 1MΩand 5.2Ω.
When the exposed metal does not have a return path to the chassis, the reading must be .
Fig. 1
1.1.2. LEAKAGE CURRENT HOT CHECK (See Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15µF capacitors, between each exposed metallic part on the set and a
good earth ground such as a water pipe, as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may
be used to make the hot checks, leakage current must not exceed 1/2 milliamp. Should the measurement is outside of the limits
specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to
the customer.
3
SB-WA530EB

2 Caution for AC Mains Lead
4
SB-WA530EB

3 Handling the Lead-free Solder
3.1. About lead free solder (PbF)
Distinction of PbF P.C.B. :
P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.
Caution:
·
Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 - 70°F (30 - 40°C) higher.
Please use a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F
(370 ± 10°C).
· Pb free solder will tend to splash when heated too high (about 1100°F/600°C).
· When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the
soldering points with the Pb free solder until it melts enough.
4 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C546~C549 through a 10 Ω, 1 W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 230~240V, 50Hz in NO SIGNAL mode should be ~410 mA.
5 Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
· No sound is heard when the power is turned on.
· Stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
5
SB-WA530EB

6 Connection of the Speaker Cables
· Be sure to connect speaker cables before connecting the AC power supply cord.
· The load impedance of any speaker used with this unit must be 4Ω.
· Be sure to connect the cable from the right speaker to the right terminal and the cable from the left speaker to the left terminal.
1. Strip off the outer covering, and twist the center conductor. Make sure the bare ends of the wires are not unravelled. (If they are,
twist them tight again.)
2. Insert the wire to the rear panel of the unit and close the lever.
6
SB-WA530EB

Some chassis components may have sharp edges.
Be careful when disassembling and servicing.
7 Disassembly Procedure
“ATTENTION SERVICER”
1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the
main components.
2. For reassembly after operation checks or replacement, reverse the respective procedures.
Special reassembly procedures are described only when required.
3. Select items from the following index when checks or replacement are required.
7.1. Disassembly flow chart
The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the
servicing.
To assemble the unit, reverse the steps shown in the chart below.
7.1.1. Disassembly of Front Panel Assembly
7.1.2. Disassembly of Rear Assembly
7
SB-WA530EB

7.2.1. Disassembly of the Front Panel
Unit
Step 1: Slot in a steel ruler to give a gap between the Front
Panel Unit and the Subwoofer Cabinet Assembly as arrow
shown.
Steps 2: Slot a piece of wood chip in between the Front Panel
Unit and the steel ruler as arrow shown.
Step 3: Use the screwdriver to slightly lift up the Front Panel
Unit as arrow shown.
Note:
Be careful with the bosses which are glued to the Subwoofer
Cabinet Assembly.
Step 4: Remove the Front Panel Unit from the Subwoofer
Cabinet Assembly.
7.2. Disassembly of the Speaker Unit and Checking of the P.C.B.
8
SB-WA530EB

· Assembly of the Front Panel Unit.
Step 1: Clean up all the glue at the 6 Boss points and
replace with the normal glue.
Step 2: Replace the Front Panel Unit firmly back to the
cabinet.
7.2.2. Disassembly of the Woofer
Speaker 1
Follow Step (1) to Step (4) described in section 7.2.1.
Step 1: Remove 4 screws from the Woofer 1.
Step 2: Remove the Woofer 1 by detaching the (+) and (-)
wires.
7.2.3. Disassembly of the Woofer
Speaker 2
Follow Step (1) to Step (4) described in section 7.2.1.
9
SB-WA530EB

Step 1: Remove 4 screws from the Woofer 2.
Step 2: Remove the Woofer 2 by detaching the (+) and (-)
wires.
7.2.4. Disassembly of the Power Amp
Unit
Step 1: Lay the speaker unit as shown. Remove 6 screws from
the bottom of the woofer unit.
Step 2: Remove 3 screws from the rear panel.
10
SB-WA530EB

Step 3: Pull out the Power Amp Unit slightly as shown.
Step 4: Disconnect connector CN506.
Step 5: Pull out the entire Power Amp Unit.
7.2.5. Disassembly of the Rear Panel and
Fan Unit
Follow Step (1) to Step (5) described in section 7.2.4.
Step 1 & 2: Remove 7 screws from the rear panel.
Step 3: Disconnect the connector (CN507) to detach the rear
panel.
Step 4: Remove 4 screws from the rear panel.
11
SB-WA530EB

Step 5: Lay the rear panel and remove the Fan Unit as arrow
shown.
7.2.6. Disassembly and checking of the
AC Inlet P.C.B., Power P.C.B. and
Transformer P.C.B.
Follow Step (1) to Step (5) described in section 7.2.4.
Follow Step (1) to Step (3) described in section 7.2.5.
Step 1: Remove the P.C.B. support by pushing the claws as
arrow shown.
Step 2: Disconnect the connector (CN502).
Step 3: Lift up the AC Inlet P.C.B. as arrow shown.
Step 4 & 5: Remove 6 screws.
Step 6: Remove 4 screws.
Step 7: Connect back the connector CP502 between Power
and AC Inlet P.C.B. for checking.
12
SB-WA530EB

7.2.7. Replacement of Power IC and
Transistor
Follow Step (1) to Step (5) described in section 7.2.4.
Follow Step (1) to Step (3) described in section 7.2.5.
Step 1: Desolder the Power IC and Transistor terminal.
Step 2: Remove 2 screws and Power IC501.
Step 3: Remove the screw and Transistor holder.
Step 4: Detach the Power IC and Transistor from Heat sink.
13
SB-WA530EB

8 Voltage Measurement and Waveform Chart
8.1. Voltage Measurement
ERROR: E:\asa\DAND\手配分_A-24_L-6\A4\md0502044c2\wa530eb.pdf
8.2. Waveform
CN501 PIN 1
CD PLAY
19.0Vp-p (10msec.div)
CN501 PIN 3
CD PLAY
18.8Vp-p (10msec.div)
CP501 PIN 21
CD PLAY
5.32Vp-p (10msec.div)
CN501 PIN 22
CD PLAY
7.0Vp-p (10msec.div)
CN503 PIN 1
CD PLAY
68.0Vp-p (10msec.div)
CN503 PIN 7
CD PLAY
68.0Vp-p (10msec.div)
CN503 PIN 9
CD PLAY
19.6Vp-p (10msec.div)
CN503 PIN 10
CD PLAY
19.2Vp-p (10msec.div)
CN503 PIN 11
CD PLAY
7.12Vp-p (10msec.div)
CN503 PIN 12
CD PLAY
7.04Vp-p (10msec.div)
CN501 PIN 8
CD PLAY
1.08Vp-p (10msec.div)
14
SB-WA530EB

9 Block Diagram
FILTER
Q506
Q505
Q503
D502
D501
Q516
SYNC
PCONT
POWER CONTROL
CIRCUIT POWER CONTROL/PROTECTION CIRCUIT
26
(25)
22 23 18
(19)
2015 3 6 1
(2)
9
13 14 7 4
21 16 8512(11) 24
SWITCH
INTERFACE
SWITCH
SWITCH
SYNC
SWITCH
-
+
-
+
-
+
-
+
SL(R)
SUBWOOFER
C IN
FL IN(FR IN)
SUB IN
SL IN(SR IN)
+DI SENS +VD +VCC HI +VCC LOW FL_O(R) C_O SUB_O SL_O(R) IN GND DISP HMUT AC IN IH DET -VCC LOW -VCC HI -VD -DI SENS
FILTER
FILTER
FILTER
FL(R)/FRONTL(R)
CENTRE
Q517
VOLTAGE
REGULATOR
F1
Z501
Q501,
Q502
SWITCH
DC_DET
Q520
INTERFACE
SWITCH Q511
HP_CNT
Q515,Q519
DCDET
SWITCH
VOLTAGE
REGULATOR
D511,D512,
D516,D518
T501
T502
D508
AC2
AC1
TO MAIN
BLOCK
(JK2000) OF
SA-HT530EB-S
FL1
FL2
B
Q512
VOLTAGE
REGULATOR
E500
D513-D515,
D517
D527~D530
POWER HIC
SIGNAL LINES
IC501
RSN311W64D-P
JK500
AC INLET
RLY501
POWER TRANSFORMER
SUB
TRANSFORMER
JK502
CENTRE
SPEAKER
SUBWOOFER
JK501
FRONT
SPEAKER
JK501(JK502)
SURROUND
SPEAKER
Q552~Q557
FAN
MOTOR
DRIVE
L500
( ) Indicates Pin No. of Right Channel Note : Signal Lines are applicable to the Left Channel only.
B B
B B
B
B
B
: MAIN SIGNAL LINE
B
BB
B
M
A
15
SB-WA530EB

(All schematic diagrams may be modified at any time with the
development of the new technology)
Note:
· The voltage value and waveforms are the reference voltage
of this unit measured by DC electronic voltmeter (high
impedance) and oscilloscope on the basis of chassis.
Accordingly, there may arise some error in voltage values
and waveforms depending upon the internal impedance of
the tester or the measuring unit.
· Importance safety notice :
Components identified by mark have special
characteristics important for safety. Furthermore, special
parts which have purposes of fire-retardant (resistors), high-
quality sound (capacitors), low-noise (resistors), etc. are
used. When replacing any of components, be sure to use
only manufacturer´s specified parts shown in the parts list.
Caution !
IC, LSI and VLSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
· Cover the parts boxes made of plastics with aluminium foil.
· Put a conductive mat on the work table.
· Ground the soldering iron.
· Do not touch the pins of IC, LSI or VLSI with fingers directly.
10 Notes of Schematic Diagram
16
SB-WA530EB

11 Schematic Diagram
11.1. Power Circuit
R501
4.7K
CN501
CN507
D502
D501
Q501 Q502
R546
1K
R504
15K
D501-D502
B0JAPG000019
E501
K4CZ01000027
Q520
B1GCCFJJ0015
INTERFACE SWITCH
IC501
R502
4.7K
R506
15K
R505
15K
R503
15K
FLin
IN GND
FRin
SUBin Cin -VD +VD SRin SLin RELAY -Di SENS +Di SENS IH DET DISP HMUT SL_O SR_O GND AC IN C_O -VCC LOW +VCC LOW SUB_O -VCC HI +VCC HI FR_O FL_O
26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 87654321
C501
1000P
C503
1000P
C506 1000P
C505 1000P
R513
56K
C507 18P
C508 18P
R514 56K
R516 56K
C510 22P
R515 56K
C509 22P
R517 56K
C511 22P
R518 56K
C512 22P
R509
4.7K
R510 4.7K
R507
3.9K
R511
15K
R512
15K
R508 3.9K
C516
0.01 C515
0.01
C517
0.01
R402
1K Q503
R532
4.7K
R523 20K
R524
120K
R526
120K
R527
120K
C513
0.047
R519
820K
R530 1
R531 1
R521 10K
R522 27K
R545
220K Q506
B1GCCFJJ0015
INTERFACE SWITCH
Q505
B1AACF000089
SWITCHING
Q501-Q502
B1AACF000089
SWITCH
Q503
B1AACF000089
SWITCH
IC501
RSN311W64D-P
POWER HIC
C551
0.01
+
-
R525
150K
D558,D559
B0AACK000004
D555
B0AACK000004
D562
B0AACK000004
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
2
4
6
8
9
7
5
3
1
1
2
: +B SIGNAL LINE
: MAIN SIGNAL LINE
: -B SIGNAL LINE
TO FAN
TO
MAIN CIRCUIT
(JK2000) OF
SA-HT530EB-S
R583
100
R584
47K
D559
D558
R582
220K
C576
50V 10P
C577
16V 10
R603
10K
C647
6.3V 470
D560
B0AACK000004
R606 22
D557
B0EAKM000117
C575
0.01
Q555 Q555
2SD0592ARA
FAN MOTOR DRIVE
Q556
B1ACCF000063
FAN MOTOR DRIVE
Q554
B1ACCF000063
FAN MOTOR DRIVE
Q554
C574
0.01
D556
B0BA01100004
C570
25V 330
R564
220K
R563
1K
R602
4.7K
Q552
B1ACCF000063
FAN MOTOR DRIVE
Q553
2SD0592ARA
FAN MOTOR DRIVE
Q552 R559
10K
R558
100K
C578
0.01
C579
0.01
R604
2.2M
R562
4.7K
R581
6.8K
Q553
Q557
C580
50V 2.2
R529 22K
Q556
R520
22K
C514 6.3V100
R528
150K
D508
B0AACK000004
Q557
2SD0592ARA
FAN MOTOR DRIVE
C504 1000P
C502 000P
SCHEMATIC DIAGRAM-1
POWER CIRCUIT
AC1
DC_DET
AC2
SYS6V
HP_CNT
D.GND
FL
HELP
A.GND
A.GND
FR
SL
A.GND
SR
C
A.GND
SW
A.GND
PCONT
SYNC
FL
AC2
FL
AC1
Fan Control
D503
D503
MA2C700A0F
D504
B0AACK000004
C529 0.1
R549 3.9K
R547
390K
C534
50V33
R548
330K
17
SB-WA530EB

CN506
JK501
JK502
CN503
CP502
D564
D566
D563
D565
D510
B0BA5R600016
D509
B0BA5R100013
D563-D566
B0BA01900005
E500
K4CZ01000027
Q511
B1BACG000036
VOLTAGE REGULATOR
SUB WOOFFER
SRRch
CENTER
C518
0.047
R533
10
R534
10
C519
0.047
R577
1.5K
C533
1000P
C532
1000P
C531
1000P
C530
1000P
C550 0.01
C547
100V4700
C546
100V3300
C545
0.1
R570
10K
C549
100V3300
C548
100V4700
C544
50V100
R568
150
C543
1000P
R569
1.8K
C560
50V10
R567
1.5K
C520
0.047 C521
0.047
C522
0.047
C523
0.047
R535
10
R536
10
R537
10
R538
10
R609
1.5K
D561
B0BA01100004
C572
50V100 R560
150
C573
1000P R561
3.9K
D509
SRLch
FRch
FLch
PCONT
GND
SYNC
SYS6V
SUB+B
R571
1.8K
D517
B0HARM000017
D512
B0HARM000017
D511
B0HARM000017
D518
B0HARM000017
D516
B0EAKM000122
D514
B0HARM000017
D513
B0HARM000017
C553
0.1
C554
0.1
D515
B0EAKM000122
D515
R621 10
R622 10
R623 10
R624 10
R625 10
L501 0.7µH
L502 0.7µH
L503 0.7µH
L504 0.7µH
L505 0.7µH
C569
0.047
FP1 5A
2
4
6
7
5
3
1
TO
AC INLET
CIRCUIT
(CN502) ON
SCHEMATIC
DIAGRAM-3
SCHEMATIC DIAGRAM-2
POWER CIRCUIT : +B SIGNAL LINE
: MAIN SIGNAL LINE
: -B SIGNAL LINE
-
-
-
1
2
3
4
5
6
TO
TRANSFORMER
CIRCUIT
(H500/W500) ON
SCHEMATIC
DIAGRAM-3
+
+
+
3
12
11
10
2
4
6
8
9
7
5
1
3
1
2
4
1
2
3
4
R565 3.9K
Q512
B1BCCG000021
VOLTAGE REGULATOR
R610
4.7
R600
47K
R601
47K
FP1
K5G502AA0002
C525
0.1
C524
0.1
C526
0.1 C527
0.1
C528
0.047
18
SB-WA530EB

11.2. Transformer Circuit and AC Inlet Circuit
F1
250V 2.0A
C555
35V4.7
CN502
H500/W500
FC502 FC501
D500
R589
10K
D500
B0AACK000004
Q516
B1GACFJJ0016
SYNC SWITCH
PCONT
D.GND
SYNC
SYS6V
SUB+B
R578
10K
R580
22
R587
2.7K
C556
0.01
C557
16V22
C558
16V1000
C559
0.01
R579
3.3K
Q517
B1BACG000036
VOLTAGE REGULATOR
Q515,Q519
B1AACF000089
DC DET SWITCH
D528
D527
RLY501
K6B1AEA00003
Z501
ERZV10V511CS
JK500
L500
ELF15N035AN
W1
W2
R401
220K
R590
1K
Q515Q519
T501
G4C7AGK00005
D527~D530
B0EAKM000122
D529
D525
B0BA6R600008
D530
T502
G4C2AAJ00005
GND
12
11
10
2
4
6
8
9
7
5
3
1
2
4
6
7
5
3
1
SCHEMATIC DIAGRAM-3
TO
POWER CIRCUIT
(CN503) ON
SCHEMATIC
DIAGRAM-2
TRANSFORMER CIRCUIT
: +B SIGNAL LINE
: -B SIGNAL LINE
TO
POWER CIRCUIT
(CP502) ON
SCHEMATIC
DIAGRAM-2
AC INLET CIRCUIT
15
14
13
12
11
10
2
4
6
97
5
3
1
16
17
43
21
R588
150
220
230
240
AC IN
230~240V
50Hz
19
SB-WA530EB

12 Printed Circuit Board
12.1. Power P.C.B.
ABCDEFG
1
2
3
4
5
6
7
8
9
POWER P.C.B (REPX0473B)
A
R549 R547
D504
C529 R545
C547
C548
C549
Q506
Q505
D503
R548
C534
J567
J504
J533
J507 J508
D559
D558
D508
J599
J561
J562
J563
R529
R519
J579 J565
J576
J511
J537
J574
J575
J596
J595
J594
J593
J538
J577
J532
J598
J591
R625
R622
J570
J528
R624
J536
J597
J410
R535
R565
R583
R581
R536
C522
C532
C531
C530
C519
C520
C518
C521
C569
R
6
R538
R530
R531
R533
R534
R537
Q
5
D502
CN506
CN507
CN501
IC501
C576
JK501
JK502
J626
J501
D501
C513
R621
R623
CP502
R577
D516 J581J627
J502
E500
C533
C550
J573
J539
J572
J571
J534
J521
J568
C577
R522
R521
J592
C523
J512
503
504
502
505
501
C526
C527
C524
C525
C528
SURROUND EFT
SPEAKER
FRONT RIGHT
SPEAKER
SURROUND RIGHT
SPEAKER
TO MAIN UNIT
CENTRE
SPEAKER
FRONT EFT
SPEAKER
1
4
2
1
25
24
23
22
21
20 19
18 17
16 15
14
13
12 11
10 9
87
65
4
3
2
1
1
17
1
3
2
2
3
65432
B
E
C
B
E
C
E
1-SR
2
3-C
4
6
5-S
4
3-FR
2
1-F
20
SB-WA530EB