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10.5. POWER SUPPLY CIRCUIT
This circuit converts the voltage supplied from PBX into the power supply voltage of +3.3V by
IC6(Switching Regulator IC).
IC10 controls the power supply circuit as below to turn IC6 on in low consumption current at
starting up.
- Input Voltage approx. 30V or less IC10-pin 1 L IC6 OFF
- Input Voltage approx. 30V or more IC10-pin 1 HiZ IC6ON
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Summary of Contents for KX-T7630
Page 4: ...4 ...
Page 8: ...8 1 NO OPERATION Note Refer to 1 5 of WAVEFORM for waveform 8 2 LCD DOES NOT OPERATION 8 ...
Page 9: ...Note Refer to 6 of WAVEFORM for waveform 8 3 HANDSET DOES NOT WORK Receive Send 9 ...
Page 10: ...Note Refer to 7 8 of WAVEFORM for waveform 8 4 HEADSET DOES NOT WORK Receive Send Note 10 ...
Page 27: ...13 CABINET AND ELECTRICAL PARTS LOCATION 27 ...