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Panasonic SB-WA730 Service Manual
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Panasonic SB-WA730 Service Manual

Active subwoofer system
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Specification
n Active subwoofer
Type
Speaker unit(s)
1. Woofer
2. Woofer
Output sound pressure level
Frequency range
Dimensions (W x H x D)
Mass
n General
Power consumption
Power supply
CONTENTS
1 way, 2 speaker system, Bass reflex
13 cm (5-1/8") Cone type, 4Ω
13 cm (5-1/8") Cone type, 4Ω
80 dB/W (1.0 m)
40 Hz-220 Hz (-16 dB)
45 Hz-180 Hz (-10 dB)
201.5 x 368.2 x 491.5 mm
(7-15/16" x 14-1/2" x 19-3/8")
11.3 kg (24.9 lbs)
AC 120V, 60Hz
Active Subwoofer System
SB-WA730
Colour
(S)...Silver Type
Note :
Specifications are subject to change without notice.
Mass and dimensions are approximate.
SB-HT730P-S consists of :
SB-FS730P-S X 2, SB-FS731P-S x 2 and SB-PC730P-S x 1
n System : SC-HT730P-S
n System : SC-HT730PC-S
340 W
Page
3
3
5
5
© 2004 Matsushita Electric Industrial Co. Ltd.. All
rights
distribution is a violation of law.
ORDER NO. MD0411542C1
Music Center: SA-HT730P-S
Satellite Speakers: SB-HT730P-S
Active Subwoofer: SB-WA730PP-S
Music Center: SA-HT730PC-S
Satellite Speakers: SB-HT730P-S
Active Subwoofer: SB-WA730PP-S
reserved.
Unauthorized
copying
A6
Page
5
5
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Summary of Contents for Panasonic SB-WA730

  • Page 1: Table Of Contents

    ORDER NO. MD0411542C1 Active Subwoofer System SB-WA730 Colour (S)...Silver Type Specification n Active subwoofer Type 1 way, 2 speaker system, Bass reflex Note : Speaker unit(s) Specifications are subject to change without notice. 1. Woofer 13 cm (5-1/8”) Cone type, 4Ω...
  • Page 2 SB-WA730PP 6.1. Disassembly flow chart 11 Printed Circuit Board 6.2. Disassembly of the Speaker Unit and Checking of the 11.1. Power P.C.B. P.C.B. 11.2. AC Inlet P.C.B. and Transformer P.C.B. 7 Voltage Measurement and Waveform Chart 12 Wiring Connection Diagram 7.1.

  • Page 3: Safety Precautions

    SB-WA730PP 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.
  • Page 4 SB-WA730PP 1.1.3. Caution for fuse replacement...

  • Page 5: Handling The Lead-Free Solder

    SB-WA730PP 2 Handling the Lead-free Solder 2.1. 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.

  • Page 6: Connection Of The Speaker Cables

    SB-WA730PP 5 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.

  • Page 7: Disassembly Procedure

    SB-WA730PP 6 Disassembly Procedure “ATTENTION SERVICER” Some chassis components may have sharp edges. Be careful when disassembling and servicing. 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.
  • Page 8 SB-WA730PP 6.1.2.
  • Page 9 SB-WA730PP 6.2. Disassembly of the Speaker Unit and Checking of the P.C.B. 6.2.1. Disassembly of the Front Panel Unit Step 3: Use the screwdriver to slightly lift up the Front Panel Unit as arrow shown. Step 1: Slot in a steel ruler to give a gap between the Front Note: Panel Unit and the Subwoofer Cabinet Assembly as arrow Be careful with the bosses which are glued to the Subwoofer...
  • Page 10 SB-WA730PP · Assembly of the Front Panel Unit. Step 1: Remove 4 screws from the Woofer 1. 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 Step 2: Remove the Woofer 1 by detaching wires the (+) and cabinet.
  • Page 11 SB-WA730PP Step 4: Remove the Woofer 2 by detaching the wires (+) and Step 2: Remove 3 screws from the rear panel. (-). 6.2.3. Disassembly of the Power Amp Unit Step 3: Pull out the Power Amp Unit slightly as shown. Step 1: Lay the speaker unit as shown.
  • Page 12 SB-WA730PP Step 3: Disconnect the connector (CN507) to detach the rear panel. Step 5: Pull out the entire Power Amp Unit. Step 4: Remove 4 screws from the rear panel. 6.2.4. Disassembly of the Rear Panel and Fan Unit Follow Step (1) to Step (5) described in section 6.2.3. Step 5: Lay the rear panel and remove the Fan Unit as arrow shown.
  • Page 13 SB-WA730PP arrow shown. Step 2: Disconnect the connector (CP502). Step 3: Lift up the AC Inlet P.C.B. as arrow shown. Step 7: Connect back the connector CP502 between Power AC Inlet P.C.B. for checking. 6.2.6. Replacement of Power IC and Transistor Step 4 &...
  • Page 14 SB-WA730PP Step 3: Remove the screw and Transistor holder. Step 4: Detach the Power IC and Transistor from Heat sink.
  • Page 15 SB-WA730PP 7 Voltage Measurement and Waveform Chart 7.1. Voltage Measurement INLET P.C.B. Ref No. Q515 Q516 Q517 Q519 MODE CD PLAY -0.4 12.5 STANDBY -0.4 TRANSFORMER P.C.B. IC501 Ref No. MODE CD PLAY 63.2 -63.1 30.4 -30.4 -0.1 -0.2 30.7 -30.7 -10.5 63.3...
  • Page 16 SB-WA730PP 7.2. Waveform CP502 PIN 4 CP502 PIN 6 CN503 PIN 4 CN503 PIN 7 CD PLAY CD PLAY CD PLAY CD PLAY 5.32Vp-p (10msec.div) 1.18Vp-p (10msec.div) 63.6Vp-p (10msec.div) 63.6Vp-p (10msec.div) CN503 PIN 10 CN503 PIN 11 CN503 PIN 13 CN503 PIN 14 CD PLAY CD PLAY...
  • Page 17 SB-WA730PP 8 Block Diagram IC501 RSN311W64D-P POWER HIC POWER CONTROL CIRCUIT POWER CONTROL/PROTECTION CIRCUIT 12(11) (25) (19) D501 D502 Q506 INTERFACE SWITCH TO MAIN BLOCK (JK2000) OF Q505 SA-HT730VP/PC-S SWITCHING SL(R)/SURRL(R) FILTER JK501(JK502) SURROUND SPEAKER CCH/CENTRE FILTER JK502 CENTRE SPEAKER FILTER SUBWOOFER FL(R)/FRONTL(R)
  • Page 18 SB-WA730PP 9 Notes of Schematic Diagram · Ground the soldering iron. (All schematic diagrams may be modified at any time with the development of the new technology) · Do not touch the pins of IC, LSI or VLSI with fingers directly. Note: ·...
  • Page 19 SB-WA730PP 10 Schematic Diagram 10.1. Power Circuit SCHEMATIC DIAGRAM-1 : MAIN SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT : +B SIGNAL LINE IC501 C551 IC501 0.01 RSN311W64D-P POWER HIC E501 K4CZ01000027 R501 R513 4.7K R502 C507 18P 4.7K R514 C508 18P R524 120K...
  • Page 20 SB-WA730PP SCHEMATIC DIAGRAM-2 : MAIN SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT : +B SIGNAL LINE JK501 SRLch FRch FLch C519 C518 0.047 0.047 R533 R534 JK502 SRRch CENTER C569 0.047 C520 C521 C522 C523 0.047 0.047 0.047 0.047 SUB WOOFFER R535 R536...
  • Page 21 SB-WA730PP 10.2. Transformer Circuit and AC Inlet Circuit SCHEMATIC DIAGRAM-3 : +B SIGNAL LINE C555 R589 35V4.7 Q516 R578 B1GACFJJ0016 SYNC SWITCH CN502 HELP R580 PCONT D.GND Q517 POWER CIRCUIT R587 D528 B1BACG000036 2.7K (CP502) ON SYNC B0EAKM000122 VOLTAGE REGULATOR SCHEMATIC SYS6V DIAGRAM-2...
  • Page 22 SB-WA730PP 11 Printed Circuit Board 11.1. Power P.C.B. POWER P.C.B (REPX0470A) CN501 J539 J570 J528 CP502 C550 E500 TO MAIN UNIT D508 J567 R583 J504 J533 C576 D504 C577 R606 Q505 Q506 J512 D558 R521 R522 R581 J521 JK502 C532 CENTRE SPEAKER R537...
  • Page 23 SB-WA730PP D562 Q557 Q556 Q552 D508 J567 R583 C570 C580 J504 CN503 J533 C576 J586 R606 R582 Q505 Q506 Q501 D560 R558 Q502 D555 D558 Q553 D557 J587 Q520 R564 R402 R581 J544 J588 D599 J543 J578 J553 J630 J554 D598 J555 J569...
  • Page 24 SB-WA730PP 11.2. AC Inlet P.C.B. and Transformer P.C.B. AC INLET P.C.B (REPX0470A) (BLU) (BRW) 125V 5A FC501 FC502 T502 (SUB-TRANSFORMER) Q517 Q516 J6001 J900 RLY501 J6002 C555 R589 R578 Q519 C557 AC IN C558 J6003 120V 60Hz J901 J6004 C571 Q515 R588 R500...
  • Page 25 SB-WA730PP 12 Wiring Connection Diagram CN501 7..1 TO MAIN UNIT CN503 CP502 CENTER SPEAKER JK502 SURROUND RIGHT SPEAKER SURROUND LEFT SPEAKER CN507 FRONT RIGHT SPEAKER FRONT LEFT SPEAKER JK501 SPEAKER WOOFER CN506 SOLDER SIDE POWER P.C.B. SOLDER SIDE T501(POWER TRANSFORMER) TRANSFORMER P.C.B.
  • Page 26 SB-WA730PP 13 Illustration of IC’s, Transistors and Diodes B1GCCFJJ0015 RSN311W64D-P B1ACCF000063 2SD0592ARA B1BCCG000021 B1GACFJJ0016 B1BACG000036 B1AACF000089 B0FBAM000009 MA2C700A0F B0BA5R600016 B0BA01900005 B0BA5R100013 B0BA01100004 B0BA6R600008 Cathode Cathode Anode Anode B0AACK000004 B0JAPG000019 B0EAKM000122 B0EAKM000117 Cathode Cathode Anode Anode...
  • Page 27 SB-WA730PP 14 Parts Location and Replacement Parts List Notes: · Important 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 these components, be sure to use only manufacturer’s specified parts shown in the parts list.
  • Page 28 SB-WA730PP 14.1. Cabinet 14.1.1. Cabinet Parts Location...
  • Page 29 SB-WA730PP...
  • Page 30 SB-WA730PP 14.1.2. Cabinet Parts List Ref. Part No. Part Name & Description Remarks CABINET AND CHASSIS RFKHBWA730PP SUB WOOFER CAB ASS’Y XTB3+12GFJ SCREW B3AAA0000583 LED (RED) RGKX0284-H XTB4+12AFJ WOOD SCREW (TBZP) RKAX0019-KJ LEG CUSHION RYQX0167-S FRONT PANEL UNIT RMQX0106 EVA PACKING (WOOFER) RGNX0273-S SPEC LABEL XTS4+16JFJ...
  • Page 31 SB-WA730PP 14.2. Electrical Parts List Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks COMPONENT COMBINATION PRINTED CIRCUIT BOARD Z501 ERZV10V511CS ZENER REPX0470A POWER P.C.B./ AC INLET [M] RTL SPEAKER P.C.B./ TRANSFORMER P.C.B. EAS13PL20A 13CM SPEAKER UNIT INTEGRATED CIRCUITS...
  • Page 32 SB-WA730PP Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R522 ERDS2TJ273T 27K 1/4W C516 F1B2H103A060 0.01 500V R523 ERDS2TJ124T 120K 1/4W C517 ECBT1C103NS5 0.01 16V R524 ERDS2TJ124T 120K 1/4W C518 F1D1H473A012 0.047 50V R525 ERDS2TJ154T 150K 1/4W...
  • Page 33 SB-WA730PP 14.3. Packing Materials & Accessories Parts List Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PACKING MATERIALS RPNX0295 POLYFOAM (ASW) RPFX0071 MIRAMAT BAG 14.4. Packaging FLE0411/P/A/S/E/N...