Panasonic KX-1T7533G Service Manual page 23

KX-T7533G/KX-T7533G-B
10. SP-PHONE CIRCUIT
1) Transmission signal path
The analog input signal from SP-phone microphone is input to the communication LSI through the IC2 built-in analog
2) Reception signal path
The voice serial data transmitted from PBX is sent to IC2 by the serial transmission. Then the signal is outpout from the
with Q26.
3) Circuit diagram for transmission/reception signal path
Refer to page 39.
393.