Panasonic SB-WA520GC Service Manual
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Panasonic SB-WA520GC Service Manual

Active subwoofer system
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Specification
n Active subwoofer
Type
Speaker unit(s)
Woofer
Output sound pressure
Frequency range
Dimensions (W x H x D)
Mass
n General
Power supply
Power consumption
Power consumption in standby
mode
Note :
Specifications are subject to change without notice.
Mass and dimensions are approximate.
CONTENTS
1.1. GENERAL GUIDELINES
2 Before Use
1 way, 1 speaker system (Bass
reflex)
Impedance 4 Ω
17 cm cone type
80 dB/W (1.0 m)
32 Hz-220 Hz (-16 dB)
36 Hz-190 Hz (-10 dB)
209 x 361 x 463 mm
11 kg
AC 110/127/220-230/240 V,
50/60 Hz
220 W
0.9 W
Page
Active Subwoofer System
SB-WA520GC
Colour
(S)... Silver Type
n System : SC-HT520GC
n System : SC-HT520GCP
n System : SC-HT520GCS
n System : SC-HT520GS
SB-HT520P-S consists of :
SB-FS520P-S x 4 and SB-PC520P-S x 1
3
3 Handling the Lead-free Solder
3
3.1. About lead free solder (PbF)
4
© 2004 Panasonic AVC Networks Singapore Pte.
Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
ORDER NO. MD0403115C3
Music Center: SA-HT520GC
Satellite speakers: SB-HT520P
Active Subwoofer: SB-WA520GC
Music Center: SA-HT520GCP
Satellite speakers: SB-HT520P
Active Subwoofer: SB-WA520GC
Music Center: SA-HT520GCS
Satellite speakers: SB-HT520P
Active Subwoofer: SB-WA520GC
Music Center: SA-HT520GS
Satellite speakers: SB-HT520P
Active Subwoofer: SB-WA520GC
Page
4
4

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Summary of Contents for Panasonic SB-WA520GC

  • Page 1 1 Safety Precautions 3 Handling the Lead-free Solder 1.1. GENERAL GUIDELINES 3.1. About lead free solder (PbF) 2 Before Use © 2004 Panasonic AVC Networks Singapore Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    SB-WA520GC 4 Before Repair and Adjustment 10 Schematic Diagram 5 Protection Circuitry 11 Printed Circuit Board 6 Connection of the Speaker Cables 12 Wiring Connection Diagram 7 Connection of the Wiring Diagram 13 Illustration of IC 痴, Transistors and Diodes...

  • Page 3: Safety Precautions

    SB-WA520GC 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, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

  • Page 4: Before Repair And Adjustment

    SB-WA520GC 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-WA520GC 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: Connection Of The Wiring Diagram

    SB-WA520GC 7 Connection of the Wiring Diagram...

  • Page 7: Disassembly Procedure

    SB-WA520GC 8 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: Disassembly Of The Speaker Unit And Checking Of The P.c.b.s

    SB-WA520GC 8.2. Disassembly of the Speaker Unit and Checking of the P.C.B.s. guide. Step 5: Remove the screws from the subwoofer. · Disassembly of Power Amp unit. Step 1: Remove all the screws. Step 2: Remove the stand base. Steps 6 & 7: Remove the screws.
  • Page 9 SB-WA520GC Step 9: Release the connector CN506 then pull out the entire Step 13: Remove the screws from the AC Inlet Power Amp unit. P.C.B. Steps 14 & 15: Remove the screws. Steps 10 & 11: Remove all the screws.
  • Page 10 SB-WA520GC Step 2: Remove the screws from the IC501. Step 17: Remove the screws. Step 3: Remove the screw. Step 18: Place the P.C.B. as shown for checking. · Replacement of the Power IC and Transistor Step 4: Replacement of the Power IC and Transistor.

  • Page 11: Block Diagram

    SB-WA520GC 9 Block Diagram IC501 RSN311W64B-P POWER HIC POWER CONTROL CIRCUIT POWER CONTROL/PROTECTION CIRCUIT 12(11) (25) (19) D501 D502 Q506 INTERFACE TO MAIN SWITCH BLOCK (JK2000) OF Q505 SA-HT520GC/GCP/ GCS/GS-S SWITCHING SURRL(R) FILTER JK501(JK502) SURROUND SPEAKER CENTRE FILTER JK502 CENTRE...

  • Page 12: Schematic Diagram

    SB-WA520GC 10 Schematic Diagram (All schematic diagrams may be modified at any time with the quality sound (capacitors), low-noise (resistors), etc. are development of the new technology) used. When replacing any of components, be sure to use only manufacturer´s specified parts shown in the parts list.
  • Page 13 SB-WA520GC SCHEMATIC DIAGRAM-1 : MAIN SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT : +B SIGNAL LINE IC501 C551 IC501 0.01 RSN311W64B-P POWER HIC E501 K4CZ01000027 R501 R513 4.7K R502 C507 18P 4.7K R514 C508 18P R524 120K D501-D502 R506...
  • Page 14 SB-WA520GC SCHEMATIC DIAGRAM-2 : MAIN SIGNAL LINE : -B SIGNAL LINE POWER CIRCUIT : +B SIGNAL LINE R597 C564 R594 1200P Q514 R592 R403 R599 Q513 100K C565 R571 C568 R591 R593 R572 470K 3.3K 0.01 6.8K C562 IC502 5600P...
  • Page 15 SB-WA520GC SCHEMATIC DIAGRAM-3 : -B SIGNAL LINE : +B SIGNAL LINE Q518 B1AAGC000007 VOLTAGE REGULATOR C570 R588 0.01 C555 R589 35V4.7 Q516 R578 KRC102MTA SYNC SWITCH CN502 D530 D529 R580 B0EAKM000122 MA2C700A0F PCONT Q517 POWER CIRCUIT R587 B1BACG000009 2.7K D527, D528...

  • Page 16: Printed Circuit Board

    SB-WA520GC 11 Printed Circuit Board POWER P.C.B (REPX0332D) J570 CN501 J581 J528 CP502 R543 R544 R540 TO MAIN UNIT Q513 R539 C537 J504 R542 R572 R554 E500 R541 J533 Q514 C532 R522 R521 R537 J415 R545 JK502 C522 J515 CENTRE...
  • Page 17 SB-WA520GC C537 CN503 R554 C541 J505 J513 J544 R570 Q520 J402 D518 J567 J403 J586 J568 J404 J587 J569 J405 J588 J560 J406 H505B J417 R527 /W505 J584 R502 R598 R517 R504 Q503 R508 C511 R507 R503 R528 D533 R568...
  • Page 18 SB-WA520GC AC INLET P.C.B (REPX0332D) FC502 FC501 (BLU) (BRW) F1 T3.15AL 250V T502(SUB TRANSFORMER) JK500 Q516 L500 J500 C555 J501 R589 R578 C557 AC IN J502 110/127/ C558 220-230/240V J503 50/60HZ C570 C571 Q518 R588 RLY501 J526 Q517 J527 J540...

  • Page 19: Wiring Connection Diagram

    SB-WA520GC 12 Wiring Connection Diagram CN501 TO MAIN UNIT CN503 7..1 CP502 CENTER SPEAKER JK502 SURROUND RIGHT SPEAKER LED P.C.B. SURROUND LEFT SPEAKER CN507 H505B/ FRONT RIGHT W505 SPEAKER SPEAKER FRONT LEFT JK501 SPEAKER WOOFER...

  • Page 20: Illustration Of Ic 痴, Transistors And Diodes

    SB-WA520GC 13 Illustration of IC’s, Transistors and Diodes C0AABB000055 KTA12710YTA KTC3199GRTA B1GCCFJJ0015 RSN311W64B-P B1AAGC000007 KRC102MTA B1BACG000009 MA2C700A0F B0HARM000017 B0BA9R600002 B0AACK000004 B0BA7R000005 Cathode Cathode Anode Anode B0JAPG000019 SLI325URCT31 B0EAKM000122 B0BA5R100013 Cathode Cathode Anode Cathode Cathode Anode Anode Anode...

  • Page 21: Parts Location And Replacement Parts List

    SB-WA520GC 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-retardent (resistors), high-quality sound (capacitors), low noise (resistors), etc are used.

  • Page 22: Cabinet

    SB-WA520GC 14.1. Cabinet 14.1.1. Cabinet Parts Location...
  • Page 23 SB-WA520GC 14.1.2. Cabinet Parts List Ref. Part No. Part Name & Description Remarks CABINET AND CHASSIS RFKHBWA520GC ACT SUB WOOFER ASS’Y RMVX0077-J SPEAKER UNIT GUARD RMQX0088-J EVA PACKING (WOOFER) RGKX0255-SJ STAND ORNAMENT RGRX0033D-BJ REAR PANEL REM0072-3 SHE187-6J PCB SUPPORT RMN0203...

  • Page 24: Electrical Parts List

    SB-WA520GC 14.2. Electrical Parts List Ref. Part No. Part Name & Description Remarks CN502 K1KB07B00020 2P CONNECTOR Ref. Part No. Part Name & Description Remarks CN503 K1KA12A00066 CONNECTOR CN506 K1KA03A00006 CONNECTOR PRINTED CIRCUIT BOARD CN507 K1KA02A00008 CONNECTOR REPX0332D POWER P.C.B./ AC INLET...
  • Page 25 SB-WA520GC Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R571 ERDS2TJ332T 3.3K 1/4W RESISTORS R572 ERDS2TJ223T 22K 1/4W R573 D0XGR10JA005 0.1 1/10W R401 ERDS2TJ224T 220K 1/4W R575 ERDS2TJ682T 6.8K 1/4W R402 ERDS2TJ102T...
  • Page 26 SB-WA520GC Ref. Part No. Part Name & Description Remarks C551 ECBT1H103KB5 0.01 50V C552 F1D1H1040002 0.1 50V C553 ECQE1104KF3 0.1 100V C554 ECQE1104KF3 0.1 100V C555 ECEA1VKA4R7B 4.7 35V C556 ECBT1H103KB5 0.01 50V C557 F2A1C101A234 100P 16V C558 ECA1CM102B 1000 16V...

  • Page 27: Packing Materials & Accessories Parts List

    SB-WA520GC 14.3. Packing Materials & Accessories Parts List Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks PACKING MATERIALS RPNX0232 POLYFOAM RPFX0071 MIRAMAT BAG 14.4. Packaging FLE0403N/S/A/P/E...

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