12
KX-TCA275CE
4.2.6.
RX Audio Path
Receiver
Burst data is input from RF Module to pin 26 (RXDA) of IC3.
In IC3, the burst data is converted to ADPCM, then to analog signal, and sent from pin 110 (LSR+) and pin 111 (LSR-) to the
receiver.
Headset
When the headset is inserted, a signal to the receiver is cut off and audio signal from pin 110 (LSR+) of IC3 is input to the head-
set.
Speakerphone
In Speakerphone mode, the BBIC (IC3) makes pin 1 of IC5 from Low to High.
And an audio signal from pin 112 (LSR_HS) of IC3 is sent to a monitor speaker through speaker Amplifier IC (IC5).
Summary of Contents for KX-TCA275CE
Page 15: ...15 KX TCA275CE 5 Location of Controls and Components 5 1 Handset ...
Page 16: ...16 KX TCA275CE ...
Page 19: ...19 KX TCA275CE 7 Operating Instructions 7 1 Soft Keys ...
Page 20: ...20 KX TCA275CE ...
Page 21: ...21 KX TCA275CE 7 2 Handset Setting Menu Layout ...
Page 23: ...23 KX TCA275CE 7 5 DISPLAY ...
Page 25: ...25 KX TCA275CE 7 7 Function Keys ...
Page 26: ...26 KX TCA275CE 7 8 Flexible Keys ...
Page 27: ...27 KX TCA275CE 7 9 Caller ID ...
Page 28: ...28 KX TCA275CE 7 10 Character Mode Table ...
Page 31: ...31 KX TCA275CE Charger Unit NO Display On the LCD ...
Page 32: ...32 KX TCA275CE 5V Circuit 8 2 Battery Charge Trouble Handset 8 2 1 Charge On ...
Page 33: ...33 KX TCA275CE 8 2 2 Charge Off ...
Page 34: ...34 KX TCA275CE 8 3 LED Trouble Handset 8 3 1 Key Back Light 8 3 2 Charging And Ringing LED ...
Page 36: ...36 KX TCA275CE 8 6 No Voice Transmission ...
Page 37: ...37 KX TCA275CE 8 7 No Voice Reception 8 7 1 Talk Mode ...
Page 39: ...39 KX TCA275CE 9 Service Fixture Tools ...
Page 46: ...46 KX TCA275CE 4 6 Downloading Start After several seconds Display shows Flash Program Start ...
Page 65: ...65 KX TCA275CE 16 2 Cabinet and electrical Parts Location 16 2 1 Handset ...
Page 66: ...66 KX TCA275CE 16 2 2 Charger Unit ...
Page 67: ...67 KX TCA275CE 16 2 3 Accessories and Packing Materials ...