Panasonic sb wa 730 gcp service manual

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ORDER NO. MD0503056C3

Service Manual

-:I-'

SB-WA730

Specification
n Active Subwoofer
Type 1 way, 2 speaker system (Bass reflex)
Speaker unit(s)
1. Woofer

2. Woofer

Output sound pressure

Impedance 4 Q

13 cm Cone type

13 cm Cone type

so 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
11.3 kg

Frequency range

Dimensions (W x H x D)
Mass

II General

Active Subwoofer System

SB-WA73OGCP

Colour
(S)...Silver Type

Note :
Specifications are subject to change without notice.
Mass and dimensions are approximate.
n System : SC»HT730(GCP) 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

11 System : SC»HT730(PX)

SB-HT73OP-S
Power supply AC 110V/127V/220-230V/240V,
Front Speaker SB-FS730P
50/6OHZ
P t' 340 W Center Speaker SB-PC730P
ower consump ion Surround Speaker SB-FS731 P
Power consumption approx. 0.9 W
(Standby mode)
A WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

CONTENTS

1 Safety Precautions
1.1. GENERAL GUIDELINES-
2 Before Use -------------------------

Panasonic

Page
3 Before Repair and Adjustment 4
4 Protection Circuitry -- 4

© 2005 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.

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SB-WATIWGCP

5 Handling the Lead-free Solder ------------------------------------------------ 4
5.1. About lead free solder (PbF) .......................................... 4
6 Connection of the Speaker Cables

7 Disassembly Procedure-

7.1. Disassembly flow chart

7.2. Disassembly of the Speaker Unit and Checking of the

PCB. --------------------------------------------------------------------------- 8
3 Voltage Measurement and Waveform Chart ......................... 14
8.1. Voltage Measurement .................................................. 14
8.2. Waveform -------------------------------------------------------------------- 15

9 Block Diagram

10 Notes of Schematic Diagram
11 Schematic Diagram
11.1. Power Circuit

11.2. Transformer Circuit, AC Inlet Circuit and Voltage Selector
Circuit -------------------------------------------------------------------------- 20
12 Printed Circuit Board
12.1. Power P.C.B
12.2. AC Inlet P.C.B., Transformer P.C.B. and Voltage Selector

P.C.B. ----------------------------------------------------------------------- 23
13 Wiring Connection Diagram .................................................. 24
14 Illustration of IC D , Transistors and Diodes ......................... 25
15 Parts Location and Replacement Parts List ......................... 25
15.1. Cabinet ------------------------------------------------------------------------ 27
15.2. Electrical Parts List ------------------------------------------------------- 30

15.3. Packing Materials & Accessories Parts List

15.4. Packaging