KX-DT390RU - Panasonic PBX Service Manual (repair manual). Page 6

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6
KX-DT390RU/KX-DT390RU-B
4.2.
Circuit Operations
4.2.1.
Power supply circuit
The circuit converts the voltage supplied from PBX into the power supply of +3.3V by IC5(Switching Regulator IC).
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