Panasonic SB-WA17E, Service Manual, Page: 2 / 36

2 Caution for AC Mains Lead 4
3 Handling the Lead-free Solder 5
3.1. About lead free solder (PbF) 5
4 Before Repair and Adjustment 5
5 Protection Circuitry 5
6 Connection of the Speaker Cables 6
7 Disassembly Procedure 7
7.1. Disassembly flow chart 7
7.2. Disassembly of the Speaker Unit and Checking of the
P.C.B. 9
8 Voltage Measurement and Waveform Chart 15
8.1. Voltage Measurement 15
8.2. Waveform Chart 16
9 Block Diagram 17
10 Notes of Schematic Diagram 18
11 Schematic Diagram 19
11.1. Power Circuit 19
11.2. Transformer Circuit and AC Inlet Circuit 21
11.3. Amplifier Circuit 22
12 Printed Circuit Board 23
12.1. Power P.C.B. 23
12.2. AC Inlet P.C.B. and Transformer P.C.B. 25
12.3. Amplifier P.C.B. 26
13 Wiring Connection Diagram 27
14 Illustration of ICs, Transistors and Diodes 28
15 Parts Location and Replacement Parts List 29
15.1. Cabinet 30
15.2. Electrical Parts List 33
15.3. Packing Materials & Accessories Parts List 36
15.4. Packaging 36
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SB-WA17E / SB-WA17EB