Panasonic SB-WA730GCP Service Manual
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Panasonic SB-WA730GCP Service Manual

Panasonic SB-WA730GCP Service Manual

Active subwoofer system
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Specification
n Active subwoofer
Type
Speaker unit(s)
1. Woofer
2. Woofer
Output sound pressure
Frequency range
Dimensions (W x H x D)
Mass
n General
Power supply
Power consumption
Power consumption
(Standby mode)
CONTENTS
1 Safety Precautions
1.1. GENERAL GUIDELINES
2 Before Use
1 way, 2 speaker system (Bass reflex)
Impedance 4 Ω
13 cm Cone type
13 cm Cone type
80 dB/W (1.0 m)
40 Hz-220 Hz (-16 dB)
45 Hz-180 Hz (-10 dB)
201.5 mm x 368.2 mm x 491.5 mm
AC 110V/127V/220-230V/240V,
approx. 0.9 W
Active Subwoofer System
SB-WA730GCP
Colour
(S)...Silver Type
Note :
Specifications are subject to change without notice.
Mass and dimensions are approximate.
n System : SC-HT730(GCP)
n System : SC-HT730(PX)
11.3 kg
50/60Hz
340 W
Page
3
3 Before Repair and Adjustment
3
4 Protection Circuitry
4
© 2005 Matsushita Electric Industrial Co. Ltd.. All
rights
distribution is a violation of law.
ORDER NO. MD0503056C3
Music Center: SA-HT730(GCP)
Satellite Speakers: SB-HT730(P)
Active Subwoofer: SB-WA730(GCP)
Music Center: SA-HT730(PX)
Satellite Speakers: SB-HT730(P)
Active Subwoofer: SB-WA730(GCP)
reserved.
Unauthorized
Page
4
4
copying
and

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Summary of Contents for Panasonic SB-WA730GCP

  • Page 1 ORDER NO. MD0503056C3 Active Subwoofer System SB-WA730GCP Colour (S)...Silver Type Specification n Active subwoofer Type 1 way, 2 speaker system (Bass reflex) Note : Speaker unit(s) Impedance 4 Ω Specifications are subject to change without notice. 1. Woofer 13 cm Cone type Mass and dimensions are approximate.

  • Page 2: Table Of Contents

    SB-WA730GCP 5 Handling the Lead-free Solder 11.2. Transformer Circuit, AC Inlet Circuit and Voltage Selector 5.1. About lead free solder (PbF) Circuit 6 Connection of the Speaker Cables 12 Printed Circuit Board 7 Disassembly Procedure 12.1. Power P.C.B. 7.1. Disassembly flow chart 12.2.

  • Page 3: Safety Precautions

    SB-WA730GCP 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.

  • Page 4: Handling The Lead-Free Solder

    SB-WA730GCP 2 Before Use Be sure to disconnect the mains cord before adjusting the voltage selector. Use a minus (-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will be used.

  • Page 5: Connection Of The Speaker Cables

    SB-WA730GCP 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.

  • Page 6: Disassembly Procedure

    SB-WA730GCP 7 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.

  • Page 7: Disassembly Flow Chart

    SB-WA730GCP 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.

  • Page 8: Disassembly Of The Speaker Unit And Checking Of The

    SB-WA730GCP 7.2. Disassembly of the Speaker Unit and Checking of the P.C.B. 7.2.1. 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...
  • Page 9 SB-WA730GCP · 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 the (+) and (-) cabinet.
  • Page 10 SB-WA730GCP Step 1: Remove 4 screws from the Woofer 2. Step 2: Remove 3 screws from the rear panel. Step 2: Remove the Woofer 2 by detaching the (+) and (-) wires. 7.2.4. Disassembly of the Power Amp Unit Step 3: Pull out the Power Amp Unit slightly as shown.
  • Page 11 SB-WA730GCP Step 3: Disconnect the Voltage Selector from the rear panel. Step 5: Pull out the entire Power Amp Unit. Step 4: Disconnect the connector (CN507) to detach the rear 7.2.5. Disassembly of the Rear Panel and panel. Fan Unit Follow Step (1) to Step (5) described in section 7.2.4.
  • Page 12 SB-WA730GCP 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 (4) described in section 7.2.5. Step 6: Remove 4 screws.
  • Page 13 SB-WA730GCP 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.

  • Page 14: Voltage Measurement And Waveform Chart

    SB-WA730GCP 8 Voltage Measurement and Waveform Chart Note: · Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as standard. Therefore, there may exist some errors in the voltage values, depending on the internal impedance of the DC circuit tester.

  • Page 15: Waveform

    SB-WA730GCP 8.2. Waveform CN501 PIN 1 CN501 PIN 3 CN501 PIN 8 CN501 PIN 21 CD PLAY CD PLAY CD PLAY CD PLAY 17.8Vp-p (10msec.div) 17.6Vp-p (10msec.div) 1.20Vp-p (10msec.div) 5.32Vp-p (10msec.div) CN501 PIN 22 CN501 PIN 24 CN503 PIN 1...

  • Page 16: Block Diagram

    SB-WA730GCP 9 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 Q505 (JK2000) OF SA-HT730GCP-S SWITCHING SL(R)/SURRL(R) FILTER JK501(JK502) SURROUND SPEAKER CCH/CENTRE FILTER JK502 CENTRE SPEAKER...

  • Page 17: Notes Of Schematic Diagram

    SB-WA730GCP 10 Notes of Schematic Diagram (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.

  • Page 18: Schematic Diagram

    SB-WA730GCP 11 Schematic Diagram 11.1. Power Circuit SCHEMATIC DIAGRAM-1 : MAIN SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT : +B SIGNAL LINE C551 IC501 0.01 IC501 RSN311W64D-P POWER HIC E501 K4CZ01000027 R501 R513 4.7K R502 C507 18P 4.7K R514...
  • Page 19 SB-WA730GCP SCHEMATIC DIAGRAM-2 : MAIN SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT : +B SIGNAL LINE JK501 SRLch FRch FLch C519 C518 0.047 0.047 R534 R533 JK502 SRRch CENTER C569 0.047 C520 C523 C521 C522 0.047 0.047 0.047 0.047...

  • Page 20: Transformer Circuit, Ac Inlet Circuit And Voltage Selector Circuit

    SB-WA730GCP 11.2. Transformer Circuit, AC Inlet Circuit and Voltage Selector Circuit SCHEMATIC DIAGRAM-3 : -B SIGNAL LINE : +B SIGNAL LINE Q518 B1AAGC000007 VOLTAGE REGULATOR C581 R588 820K 1000P C555 R589 35V4.7 Q516 R578 B1GACFJJ0016 SYNC SWITCH CN502 D530 D529...

  • Page 21: Printed Circuit Board

    SB-WA730GCP 12 Printed Circuit Board 12.1. Power P.C.B. POWER P.C.B (REPX0480A) CN501 J539 J570 J528 CP502 C550 E500 TO MAIN UNIT D508 J567 R583 J504 J533 C576 C577 D504 R606 Q505 Q506 J512 D558 R521 R522 R581 J521 JK502 C532...
  • Page 22 SB-WA730GCP D562 Q557 Q556 Q552 D508 J567 R583 C570 C580 J504 CN503 J533 C576 J586 R606 R582 Q554 Q555 Q505 Q506 Q501 D560 R558 Q502 D555 D558 Q553 D557 J587 Q520 R564 R402 R581 J544 D599 J588 J543 J578 J553...

  • Page 23: Ac Inlet P.c.b., Transformer P.c.b. And Voltage Selector

    SB-WA730GCP 12.2. AC Inlet P.C.B., Transformer P.C.B. and Voltage Selector P.C.B. AC INLET P.C.B (REPX0480A) (BLU) (BRW) T3.15AL 250V FC501 FC502 T502 (SUB-TRANSFORMER) Q517 JK500 Q516 J6001 J900 AC IN RLY501 C555 R589 110V R578 J6002 Q519 C557 /127V /220-230V/...

  • Page 24: Wiring Connection Diagram

    SB-WA730GCP 13 Wiring Connection Diagram CN501 7..1 TO MAIN UNIT CN503 CP502 CENTER SPEAKER JK502 SURROUND RIGHT SPEAKER SURROUND LEFT SPEAKER FRONT RIGHT SPEAKER CN507 SPEAKER FRONT LEFT SPEAKER JK501 WOOFER CN506 SOLDER SIDE POWER P.C.B.

  • Page 25: Illustration Of Ic 痴, Transistors And Diodes

    SB-WA730GCP 14 Illustration of IC’s, Transistors and Diodes B1AACF000089 RSN311W64D-P B1BCCG000021 B1ACCF000063 B1AAGC000007 B1GCCFJJ0015 B1BACG000036 B1GACFJJ0016 MA2C700A0F 2SD0592ARA B0AACK000004 B0JAPG000019 B0BA5R100013 B0EAKM000117 B0BA6R600008 Cathode Cathode Cathode Anode Anode Anode B0BA5R600016 B0EAKM000122 B0BA01900005 B0FBAM000009 B0BA01100004 B0BA7R000005 Cathode Anode...

  • Page 26: Parts Location And Replacement Parts List

    SB-WA730GCP 15 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.

  • Page 27: Cabinet

    SB-WA730GCP 15.1. Cabinet 15.1.1. Cabinet Parts Location...
  • Page 28 SB-WA730GCP...
  • Page 29 SB-WA730GCP 15.1.2. Cabinet Parts List Ref. No. Part No. Part Name & Description Remarks CABINET AND CHASSIS RFKHBWA730PP SUB WOOFER CAB. ASSY XTB3+12GFJ SCREW B3AAA0000583 LED (RED) RGKX0284-H XTB4+12AFJ WOOD SCREW (TBZP) RKAX0019-KJ LEG CUSHION RYQX0167A-S FRONT PANEL UNIT RMQX0106...

  • Page 30: Electrical Parts List

    SB-WA730GCP 15.2. Electrical Parts List Ref. No. Part No. Part Name & Description Remarks CN503 K1KA15A00159 15P CONNECTOR CN506 K1KA04A00105 4P CONNECTOR Ref. No. Part No. Part Name & Description Remarks CN507 K1KA02A00008 2P CONNECTOR PRINTED CIRCUIT BOARD CP502 K1KA07A00123...
  • Page 31 SB-WA730GCP Ref. No. Part No. Part Name & Description Remarks Ref. No. Part No. Part Name & Description Remarks R513 ERDS2TJ563T 56K 1/4W C508 ECBT1H180JC5 18P 50V R514 ERDS2TJ563T 56K 1/4W C509 ECBT1H220JC5 22P 50V R515 ERDS2TJ563T 56K 1/4W C510...

  • Page 32: Packing Materials & Accessories Parts List

    SB-WA730GCP 15.3. 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 15.4. Packaging FLE0503/P/A/S/E/N/J...

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