with low power loss and low heat radiation.
Circuit Operation: / IC301 is a regulated power supply. The voltage at point A is regulated to 4.5 V
by IC301. / The voltage at point B is dropped by D306 to 4.1 V. / The voltage at point C is dropped
by D511 to 3.8 V.
The voltage at point D is dropped by Q304 to 4.3V
The voltage at point E is dropped by Q601 to 3.6V
12.5. DTMF Signal
When the DTMF data from the Handset is received, the DTMF signal is output from pin 36 of
IC501 and sent to the line through Q131.
12.6. Line Sending Signal
The coded signal input from the RF unit is decoded by IC501. / The audio signal output from IC501
-36 and is input to telephone line.
56
Содержание KX-TG2650N
Страница 2: ...1 LOCATION OF CONTROLS 1 1 Base Unit 2 ...
Страница 3: ...1 2 Handset 3 ...
Страница 5: ...3 SETTINGS 3 1 Connections 5 ...
Страница 7: ...3 2 Battery Charge 3 2 1 Battery Strength 3 2 2 Recharge 3 2 3 Battery Information 7 ...
Страница 8: ...3 3 Selecting the Dialing Mode 8 ...
Страница 9: ...3 4 Selecting the Line Mode 9 ...
Страница 10: ...4 OPERATION 4 1 Making Calls 4 1 1 With the Handset 10 ...
Страница 11: ...11 ...
Страница 12: ...12 ...
Страница 13: ...4 1 2 With the Base Unit Digital Duplex Speakerphone 13 ...
Страница 14: ...14 ...
Страница 15: ...4 2 Answering Calls 15 ...
Страница 16: ...16 ...
Страница 19: ...4 4 3 Viewing the Caller List 19 ...
Страница 20: ...20 ...
Страница 21: ...4 4 4 Calling Back from the Caller List 4 4 5 Editing the Caller s Phone Number 4 4 5 1 With the handset 21 ...
Страница 22: ...4 4 5 2 With the base unit 22 ...
Страница 23: ...4 4 6 Storing Caller List Information in the Directory 23 ...
Страница 24: ...4 4 7 Erasing Caller List Information 24 ...
Страница 25: ...5 DISASSEMBLY INSTRUCTIONS 25 ...
Страница 26: ...26 ...
Страница 28: ...6 2 Assembly the LCD to P C Board Handset 28 ...
Страница 31: ...7 1 Check Power 31 ...
Страница 32: ...7 2 Error Indication 7 3 Check SP Phone Voice Transmission 32 ...
Страница 33: ...7 4 Check SP Phone Voice Reception 7 5 Check Battery Charge 33 ...
Страница 34: ...7 6 Check Link 34 ...
Страница 38: ...7 7 4 Check Table for RF Block 38 ...
Страница 42: ...7 8 Check Handset Voice Transmission 42 ...
Страница 43: ...7 9 Check Handset Voice Reception 43 ...
Страница 44: ...7 10 Check Call ID 44 ...
Страница 45: ...8 TEST MODE AND ADJUSTMENT 8 1 Test Mode Flow Chart for Base Unit 45 ...
Страница 51: ...9 5 Explanation of DSP Data Communication 9 5 1 Calling 51 ...
Страница 66: ...15 1 IC501 16 CPU DATA Handset 16 1 IC201 66 ...
Страница 67: ...17 EXPLANATION OF IC TERMINALS RF Unit Base Unit 17 1 IC101 67 ...
Страница 68: ...68 ...
Страница 69: ...18 HOW TO REPLACE FLAT PACKAGE IC 18 1 Preparation SOLDER 69 ...
Страница 72: ...72 ...
Страница 73: ...20 CABINET AND ELECTRICAL PARTS Handset 21 ACCESSORIES AND PACKING MATERIALS 73 ...
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