Matsushita Electric SE-HD550, Service Manual

Page: 10 / 34

IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conductive mat on the work table.
Do not touch the legs of IC or LSI with the fingers directly.
- Voltage and signal line
: Positive voltage line
: Negative voltage line
: Audio signal line
8. Schematic Diagram
9. Printed Circuit Board Diagram
10. Type Illustration of ICs, Transistors and Diodes
11. Wiring Connection Diagram
12. Block Diagram
13. 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-retardant
(resistors), high-quality sound (capacitors), low-noise (resistors),
etc. are used.
10