KX-NS1000UC (serv.man6) — Panasonic PBX Service Manual (repair manual). Page 9

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9
KX-NS1000UC
4.2.
Power Supply Block Diagram
[PNLP2543 (MPS6933)] Operation
Part 1   AC Section and Rectifier circuit
From AC input to the rectifier smoothing circuit.
Part 2  Main Converter
Provides a description of the main converter that insulates primary DC voltage and converts it to secondary (32V output).
Part 3  Output Voltage Section
Describes the circuit that converts main converter output to 15V.
Part 4  Alarm Signal Transmission Section
Describes the circuit that transmits AC and DC alarm signal.
Part 5  Protective Circuit Operation Section
Overvoltage/overheat protection circuits.
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