Sending Signal; Reception Signal - Panasonic KX-TG5431BXS Service Manual

KX-TG5431BXS / KX-TGA542BXS

23.5. Sending Signal

The voice signal from the microphone is input to DSP (42, 43). CN331 is the headset jack. When the headphone is connected,
the Q331 detect it. The input from the microphone of the Handset (MIN, MIP) is cut and the microphone signal from the headset
is input to DSP (36). Also the power for the microphone is supplied from DSP (20) and the power is turned OFF on standby.

23.6. Reception Signal

The voice signal from the Base Unit is output to DSP (33) (HSSPOUT). This signal is led to the headset jack (CN331). The
signal through the headset jack and the other signal output from DSP (34) drives the speaker. When the headset is inserted to
the jack, the voice signal is cut at the jack, so the sound does not come out from the speaker, but from the headset only.
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