
The digital voice signal from the Base Unit is changed to a Analog signal by IC303 and sent to
the speaker.
8.1.4. SENDING VOICE SIGNAL
The Analog input signal from Microphone is changed to a digital signal. And sent to the Base
Unit.
8.1.5. RESET CIRCUIT
The IC304 monitors the battery voltage. It becomes "High" when the battery voltage is over
3.2V. Setting the Power SW (SW300) to ON (H), IC309 outputs "High", IC307(1) / RES becomes
"High", then the reset is released. When the battery voltage is under 3.2V, the reset is released
by putting the unit on the charger.
Summary of Contents for KX-TD7895 - Digital Spread Spedtrum Telephone
Page 3: ...3 2 CONNECTIONS OF HANDSET ...
Page 4: ...3 3 BASE UNIT ...
Page 5: ...4 DISASSEMBLY INSTRUCTIONS 4 1 BASE UNIT ...
Page 6: ...1 Remove the four screws A and remove the Bottom Cabinet ...
Page 9: ...2 Take the Battery out of the Rear Cabinet after disconnecting the Connector ...
Page 10: ...3 Remove two Screws D from the Rear Cabinet ...
Page 12: ...6 Remove the Antenna from the Front Cabinet after removing the Screw E ...
Page 13: ...7 Remove the RF unit from the Main Board ...
Page 20: ...34 CHARGE I ON OFF ...
Page 23: ...6 4 RF UNIT FREQUENCY TABLE ...
Page 32: ...10 TROUBLESHOOTING GUIDE 10 1 NO VOICE RECEPTION 10 2 NO VOICE TRANSMISSION ...
Page 33: ...10 3 NO LINK BASE UNIT ...
Page 39: ...12 CABINET AND ELECTRICAL PARTS LOCATION 12 1 BASE UNIT ...
Page 40: ...12 2 HANDSET ...
Page 41: ...12 3 CHARGER ...
Page 42: ...13 ACCESSORIES AND PACKING MATERIALS ...
Page 46: ... CAPACITORS ...
Page 63: ......
Page 64: ......