Panasonic sb wa 930 pp service manual
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Page 1
ORDER NO. MD050101501
Service Manual
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
SB-WA930
1 way, 2 speaker system (Bass reflex)
Impedance 49
15 cm (5-7/8") Cone type
15 cm (5-7/8") Cone type
84 dB/W (1.0 m)
34 Hz-220 HZ (-16 dB)
38 Hz-190 HZ (-10 dB)
285 mm x402 mm x 520 mm
(11-7/32" x 15-13/16" x 20-15/32)
15 kg (33.1 lbs)
AC 120V, 60Hz
Active Subwoofer System
SB-WA930PP
Colour
(S)...Silver Type
n System: SC-HTQSOP-S Music Center: SA-HT93OP-S
Speaker system: SB-HT930P-S
Subwoofer: SB-WAQSOPP-S
Music Center: SA-HT93OPC-S
Speaker system: SB-HTQ3OPC-S
Subwoofer: SB-WA930PP-S
n System: SC-HTQSOPC-S
Note :
Specifications are subject to change without notice.
Mass and dimensions are approximate.
Power consumption 390 W
SB-HT930P-S consists of :
SB-PCSSOP-S x 1, SB-F893OP-S x 2 and SB-F8931P-S x 2
A WARNING
This serVice inlormation 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 nonetechnical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced prolessional 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
Page
1 Safety Precautions ------------------------------------------------------- 3
1.1. GENERAL GUIDELINES ---------------------------------------- 3
Panasonic
Page
2 Handling the Lead-free Solder ........................................ 5
2.1. About lead free solder (PbF) ................................... 5
© 2005 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
Page 2
SB-WA930PP
3 Before Repair and Adjustment ---------------------------------------- 5
4 Protection Circuitry ------------------------------------------------------ 5
5 Connection of the Speaker Cables ---------------------------------- 6
6 Disassembly Procedure ------------------------------------------------ 7
6.1. Disassembly flow chart ------------------------------------------ 7
6.2. Disassembly of the Speaker Unit and Checking of the
P.C.B.
7 Voltage Measurement and Waveform Chart
7.1. Voltage Measurement --------------------- ..15
7.2. Waveform --------------------------------------------------------- 15
8 Block Diagram ----------------------------------------------------------- 17
9 Notes of Schematic Diagram ---------------------------------------- 13
10 Schematic Diagram ---------------------------------------------------- 19
10.1. Power Circuit ----------------------------------------------------- 19
10.2. AC Inlet Circuit and Transformer Circuit .................... 21
10.3. Amplifier Circuit .................................................. 22
11 Printed Circuit Board .................................................. 23
11.1. Power P.C.B. ----------------------------------------------------- 23
112- AC Inlet P.C.B. and Transformer P,C.B_ -------------------- 25
11.3. Amplifier P.C.B. -------------------------------------------------- 26
12 Wiring Connection Diagram ...................
13 illustration of lC [I , Transistors and Diodes
14 Parts Location and Replacement Parts List--
14.1. Cabinet ------------------------------------------------------------ 30
14.2. Electrical Parts List ---------------------------------------------- 33
14.3. Packing Materials 8. Accessories Parts List ---------------- 36
14.4. Packaging -------------------------------------------------------- 35