Panasonic SB-WA880 Service Manual
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Panasonic SB-WA880 Service Manual

Panasonic SB-WA880 Service Manual

Active subwoofer system
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ORDER NO. MD0502022C2
Active Subwoofer System
SB-WA880EB
Colour
(S)... Silver Type
SPECIFICATIONS
Specification
1
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Summary of Contents for Panasonic SB-WA880

  • Page 1 ORDER NO. MD0502022C2 Active Subwoofer System SB-WA880EB Colour (S)... Silver Type SPECIFICATIONS Specification PDF created with pdfFactory Pro trial version www.pdffactory.com...

  • Page 2: Safety Precautions

    Note : Specifications are subject to change without notice. Mass and dimensions are approximate. Music Center: SA-HT880(EB) System : SC-HT880(EB) Satellite Speakers: SB-HT880(EB) Active Subwoofer: SB-WA880(EB) Music Center: SA-HT880W(EB) System : SC- HT880W(EB) Satellite Speakers: SB-HT880(EB) Digital Tx & Rx: SH-HT880W(EB) Active Subwoofer: SB-WA880(EB) 2005 Matsushita Electric Industrial Co.

  • Page 3: General Guidelines

    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: Caution For Ac Mains Lead

    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.

  • Page 5: Handling The Lead-Free Solder

    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.

  • Page 6: Before Repair And Adjustment

    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.

  • Page 7: Disassembly Procedure

    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 8 7.1.2. Disassembly of Rear Assembly 7.2. Disassembly of the Speaker Unit and Checking of the P.C.B. 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.
  • Page 9 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. PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 10 Step 4: Remove the Front Panel Unit from the Speaker Cabinet Assembly Unit as arrow shown. - Assembly of the Front Panel Unit. Step 1: Clean up the remaining glue at the 6 bosses points and replace with the normal glue. PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 11 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. PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 12 Step 2: Remove the Woofer 1 by detaching the (+) red and (-) black wires. 7.2.3. Disassembly of the Woofer Speaker 2 Follow Step (1) to Step (4) described in section 7.2.1. Step 1: Remove 4 screws. Step 2: Remove the Woofer 2 by detaching the (+) red and (-) black wires. 7.2.4.
  • Page 13 Step 1: Lay the speaker unit as shown. Remove 7 screws from the bottom of the woofer unit. Step 2: Remove 3 screws from the rear panel. Step 3: Pull out the Power Amp Unit slightly as arrow shown. PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 14 Step 4: Disconnect connector (CN604). 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. PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 15 Step 1 & 2: Remove 6 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. Step 5: Lay the rear panel and remove the Fan Unit as arrow shown. 7.2.6.
  • Page 16 Step 1: Check both the Amplifier P.C.B. and AC Inlet P.C.B.. 7.2.7. Disassembly and checking of the 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 &...
  • Page 17 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: Disconnect the connector (CN502). Step 2: Remove the AC Inlet P.C.B. by pulling the P.C.B. support claw arrow shown). Step 3: Desolder the terminals of IC601, Transistors Q601 and Q602.

  • Page 18: Voltage Measurement And Waveform Chart

    Step 6: Remove 2 screws and the transistor holders. Step 7: Flip the Power P.C.B. as shown to desolder the terminals of the Power IC501, Transistors Q511 and Q512. 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.

  • Page 19: Schematic Diagram

    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.
  • Page 20 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. - The parenthesized indications in the Remarks columns specify the areas or colour.
  • Page 21 PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 22 15.1.2. Cabinet Parts List PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 23 Ref. No. Part No. Part Name & Description Remarks CABINET AND CHASSIS RFKHBWA880EB SUB WOOFER CAB ASS’Y XTB4+12AFJ WOOD SCREW (TBZP) B3AAA0000583 LED (RED) RGKX0284-J XTB3+12GFJ SCREW RKAX0019-KK LEG CUSHION RYQX0180-S FRONT PANEL UNIT RMQX0110 EVA PACKING (WOOFER) RGNX0291A-S SPEC LABEL XTS4+20JFJ SCREW REM0072-4...
  • Page 24 Ref. No. Part No. Part Name & Description Remarks PRINTED CIRCUIT BOARD REPX0471D POWER P.C.B./ AC INLET P.C.B./ TRANSFORMER P.C.B. [M] RTL REPX0472B AMPLIFIER P.C.B. [M] RTL INTEGRATED CIRCUITS IC501 RSN311W64D-P IC HIC (PBF) IC601 RSN312H24A-P IC HIC TRANSISTORS Q501 B1AACF000117 TRANSISTOR Q502...
  • Page 25 Ref. No. Part No. Part Name & Description Remarks D559 B0AACK000004 DIODE D560 B0AACK000004 DIODE D561 B0BA01100004 DIODE D562 B0AACK000004 DIODE D563 B0BA01900005 DIODE D564 B0BA01900005 DIODE D565 B0BA01900005 DIODE D566 B0BA01900005 DIODE D597 B0FBAM000009 DIODE D598 B0FBAM000009 DIODE D599 B0FBAM000009 DIODE D601...
  • Page 26 SPEAKER PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 27 Ref. No. Part No. Part Name & Description Remarks EAS15PL05A SPEAKER UNIT RELAY RLY501 K6B1AEA00003 RELAY FUSE K5D502BK0006 5A CURRENT FUSE FUSE HOLDERS FC501 EYF52BCY FUSE HOLDER FC502 EYF52BCY FUSE HOLDER FUSE PROTECTOR K5G502AA0002 5A FUSE PROTECTOR HOLDERS H503 K1YF15000004 15P WIRE HOLDER H601 K1YF10000006...
  • Page 28 R502 ERDS2TJ472T 4.7K 1/4W PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 29 Ref. No. Part No. Part Name & Description Remarks R505 ERDS2TJ153T 15K 1/4W R506 ERDS2TJ153T 15K 1/4W R509 ERDS2TJ472T 4.7K 1/4W R510 ERDS2TJ472T 4.7K 1/4W R511 ERDS2TJ153T 15K 1/4W R512 ERDS2TJ153T 15K 1/4W R513 ERDS2TJ563T 56K 1/4W R514 ERDS2TJ563T 56K 1/4W R515 ERDS2TJ563T 56K 1/4W...
  • Page 30 Ref. No. Part No. Part Name & Description Remarks R587 ERDS2TJ272T 2.7K 1/4W R588 ERDS2TJ151T 150 1/4W R589 ERDS2TJ103T 10K 1/4W R590 ERDS2TJ102T 1K 1/4W R600 ERDS2TJ473T 47K 1/4W R601 ERDS2TJ473T 47K 1/4W R602 ERDS2TJ472T 4.7K 1/4W R603 ERDS2TJ103T 10K 1/4W R604 ERDS2TJ225T 2.2M 1/4W...
  • Page 31 Ref. No. Part No. Part Name & Description Remarks C513 F1D1H473A012 0.047 50V C514 ECEA0JKA101B 100 6.3V C515 F1B2H103A060 0.01 500V C516 F1B2H103A060 0.01 500V C517 ECBT1C103NS5 0.01 16V C518 F1D1H473A012 0.047 50V C519 F1D1H473A012 0.047 50V C522 F1D1H473A012 0.047 50V C523 F1D1H473A012 0.047 50V...

  • Page 32: Packing Materials

    Ref. No. Part No. Part Name & Description Remarks C609 F1B2H103A060 0.01 500V C610 F1B2H103A060 0.01 500V C611 ECBT1H102KB5 1000P 50V C612 ECBT1H102KB5 1000P 50V C613 ECKR1H103ZF5 0.01 50V C614 ECKR1H103ZF5 0.01 50V C615 F1D1H473A012 0.047 50V C616 F1D1H473A012 0.047 50V C617 ECBT1H103KB5 0.01 50V...
  • Page 33 FLE0501/A/S/E/N/J PDF created with pdfFactory Pro trial version www.pdffactory.com...
  • Page 34 AC INLET P.C.B (REPX0471D) (BLU) (BRW) T5AL 250V FC501 FC502 T502 (BACK UP TRANSFORMER) Q517 JK500 L500 Q516 J6001 RLY501 C555 R589 R578 J6002 Q515 C557 AC IN C558 J6003 230V-240V 50Hz Q519 J6004 R588 C556 J6007 R580 J6005 J6008 CN502 7 6 5 4 3 2 1 CAUTION...
  • Page 35 SCHEMATIC DIAGRAM-1 : MAIN SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT : +B SIGNAL LINE C551 IC501 IC501 0.01 RSN311W64D-P POWER HIC E501 K4CZ01000027 R501 R513 4.7K R502 C507 18P 4.7K R514 C508 18P R524 120K D501-D502 R506 B0JAPG000019 R516 R526 C510 22P...
  • Page 36 SCHEMATIC DIAGRAM-2 : MAIN SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT JK502 CENTER S Rch JK501 S Lch F Rch L501 G0AR76Y00001 L502 F Lch G0AR76Y00001 R621 R622 CN603 L505 G0AR76Y00001 C569 C519 C518 R625 0.047 0.047 0.047 AMPLIFIER C526 C527 C528...

  • Page 37: Power Circuit

    SCHEMATIC DIAGRAM-3 : -B SIGNAL LINE : +B SIGNAL LINE C555 R589 35V4.7 Q516 R578 B1GACFJJ0018 SYNC SWITCH CN502 HELP D527~D530 R580 B0EAKM000122 PCONT D.GND Q517 POWER CIRCUIT R587 B1BACG000048 2.7K D528 (CP502) ON SYNC D530 VOLTAGE REGULATOR SCHEMATIC SYS6V DIAGRAM-2 C559 0.01...
  • Page 38 SCHEMATIC DIAGRAM-4 : MAIN SIGNAL LINE : -B SIGNAL LINE AMPILIFIER CIRCUIT : +B SIGNAL LINE IC601 IC601 RSN312H24A-P POWER HIC CN604 R619 L601 C607 18P SUBWOOFER R629 L601,L602 SPEAKER UNIT G0AR76Y00001 R620 L602 C608 18P H603 R630 /W603 C615 C611 0.047 1000P...
  • Page 39 AC INLET P.C.B. Ref No. Q515 Q516 Q517 Q519 MODE CD PLAY -0.2 11.9 STANDBY -0.3 11.5 POWER P.C.B. IC501 Ref No. MODE CD PLAY 31.0 31.0 64.5 -64.4 31.9 -31.9 -0.2 32.2 -32.1 -10.4 64.5 STANDBY 14.0 -0.2 -0.1 -0.2 -0.1 14.0...
  • Page 40 CN501 PIN 1 CN501 PIN 3 CN501 PIN 8 CN501 PIN 21 CD PLAY CD PLAY CD PLAY CD PLAY 17.6Vp-p (10msec.div) 17.4Vp-p (10msec.div) 1.10Vp-p (10msec.div) 5.24Vp-p (10msec.div) CN501 PIN 22 CN501 PIN 24 CN503 PIN 1 CN503 PIN 3 CD PLAY CD PLAY CD PLAY...
  • Page 41 POWER P.C.B. SOLDER SIDE CN501 TO MAIN UNIT 7..1 CP502 CN602 H503/W500 1..8 CN601 JK502 CENTRE SPEAKER SURROUND RIGHT SPEAKER SURROUND LEFT SPEAKER FRONT RIGHT CN603 SPEAKER FRONT LEFT CN507 SPEAKER JK501...

  • Page 42: Signal Lines

    IC501 RSN311W64D-P POWER HIC POWER CONTROL CIRCUIT POWER CONTROL/PROTECTION CIRCUIT 11(12) TO MAIN (25) (19) BLOCK (JK2000) OF D501 SA-HT880EB-S Q506 INTERFACE SWITCH D502 Q505 SWITCHING SL(R) FILTER JK501(JK502) SURROUND SPEAKER JK502 FILTER CENTRE SPEAKER FILTER CN603 SUBWOOFER FRONTL(R) JK501,CN603 FILTER FRONT Q602...
  • Page 43 RSN311W64D-P B1BACG000048 RSN312H24A-P B1GCCFJJ0016 B1AACF000117 B1BCCG000023 2SD0592ARA B1ACCF000094 B1BAAJ000003 B0BA5R100013 B1GACFJJ0018 B0BA01200008 B0BA6R600008 B0BA02300017 Cathode Anode B0BA01900005 B0JAPG000019 B0FBAM000009 B0AACK000004 MA2C700A0F B0BA01100004 B0EAKM000117 B0BA01400009 B0BA5R700008 Cathode Cathode Anode Anode B0EAKM000122 Cathode Anode...
  • Page 44 AMPLIFIER P.C.B (REPX0472B) H601/ H602/W602 W601 J616 CN604 J675 R634 D608 D609 J665 D602 R635 H603 /W603 C606 R631 C615 C621 D601 L601 J678 J696 R629 J627 R624 J644 J686 D604 C608 J619 C616 C619 D605 R620 R633 C611 R630 D603 Q603 C612...
  • Page 45 POWER P.C.B (REPX0471D) CN501 J570 J528 CP502 C550 D508 E500 J567 TO MAIN UNIT J504 R583 J533 C576 D504 R522 R521 Q506 J512 D558 D559 R581 R611 JK502 Q505 R577 CENTRE C532 SPEAKER R537 SURROUND RIGHT 1-SR SPEAKER R622 J593 SURROUND LEFT J594 5-SL...
  • Page 46 D508 D562 J567 Q557 Q556 J504 R583 Q552 C580 H503/W500 CN602 J533 C576 Q553 R582 D504 Q555 Q554 R606 J586 Q501 D560 R558 Q506 Q502 D555 D558 D559 J529 D557 Q520 R564 J587 R402 R581 CN601 Q505 J544 D599 J588 J904 J578 J543...

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