Panasonic sb wa 930 pp service manual

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