Read Panasonic KX-TG2560B / KX-TG2560S Service Manual online
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KX-TG2560B/KX-TG2560S
8. RX Data Circuit/Hard Mute Circuit
The AF signal output from the RF unit is filtered and amplified by a filter amplifier with a 500 Hz cutoff connected to pins 23
through 24 of IC401. The resulting demodulated data waveform is then input to RX DATA pin 59 of the IC701.
If there is data from the handset during talk operation, the handset data is as shown below to prevent the data from leaking onto
the line. After the data arrives to DSP, muting is applied by the DSP.
Circuit Diagram
59
23
IC701
IC401
R728
C402
13 AF OUT
Data Amp
24
R407
9. ID Code Setting
When the Handset is placed on the base unit, new ID data is output from pin 97 of the DSP after the charge detector operates.
After passing through data amplifier Q312 and the charge terminal, the data is sent to the Handset.
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