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24.1. Outline
Handset consists of the following ICs as shown in
BLOCK DIAGRAM (HANDSET)
().
- DECT BBIC (Base Band IC): IC1
- All data signals (forming/analyzing ACK or CMD signal)
- All interfaces (ex: Key, Detector Circuit, Charge, DC/DC Converter,
EEPROM, LCD)
- RF Module: IC3
- PLL Oscillator
- Detector
- Compress/Expander
- Amplifier for transmission and reception
- AMP: IC2
- Single OP_AMP for SP
- MIDI (Musical Instrument Digital Interface): IC4
- 16-Tone 32-Poly PCM Sound Generator
- Port (LED direct driver with PWM)
- EEPROM: IC10
- Temporary operating parameters (for RF, etc.)
Refer to
EEPROM LAYOUT (HANDSET)
().
24.2. Power Supply Circuit/Reset Circuit
Circuit Operation:
When power on the Handset, the voltage is as follows;
BATTERY(2.2 V ~ 2.6V: J1) L1, D1, Q2 (1.8V) Q3 (2.7V) Q1 (4.0V)
The Reset signal generates IC1 (78) and 1.8V.
24.3. Charge Circuit
Circuit Operation:
When charging the handset on the Base Unit, the charge current is as follows;
DC+(5.5V ~ 6V) D1 R4, R5 (Base) (Handset) L4 Q4 D7
F1 ... Battery ... BATTERY- R43 GND CHARGE-(Handset) CHARGE-
(Base) GND DC-(GND)
In this way, the BBIC on Handset detects the fact that the battery is charged.
The charge current is controlled by switching Q5 of Handset.
Refer to Fig.101 in
Power Supply Circuit
().
24.4. Battery Low/Power Down Detector
82
Содержание KX-TCA150EXV
Страница 9: ...9 ...
Страница 13: ...6 3 Setting the Ringer Volume 6 3 1 Base unit 13 ...
Страница 14: ...6 3 2 Handset 6 4 Settings Menu Chart 6 4 1 Base Unit 14 ...
Страница 15: ...6 4 2 Handset 6 5 PIN Code 15 ...
Страница 27: ...27 ...
Страница 29: ...8 3 Redialling 8 4 Phonebook 29 ...
Страница 32: ...8 4 3 Phonebook Character Table 8 4 4 Storing the Number in the Phonebook 32 ...
Страница 33: ...8 4 5 Hot Key Speed Dial 33 ...
Страница 35: ...8 5 Handset Registration to a Base Unit 35 ...
Страница 36: ...Note for Service At step 7 enter Finally Handset will be linked to Base Unit 36 ...
Страница 37: ...8 6 Base Unit Selection 37 ...
Страница 39: ...9 2 Text Entry 39 ...
Страница 40: ...Cross Reference SMS Character Table 40 ...
Страница 41: ...9 3 SMS Character Table 41 ...
Страница 42: ...9 4 Reading Displaying a Message 9 4 1 In the Outgoing List 42 ...
Страница 43: ...9 4 2 In the Incoming List 43 ...
Страница 44: ...44 ...
Страница 45: ...9 5 Changing the SMS Service Centre Numbers 45 ...
Страница 46: ...46 ...
Страница 47: ...9 6 Turn the SMS Feature ON OFF 9 7 Receiving a Text Message 10 DISASSEMBLY INSTRUCTIONS 10 1 Base Unit 47 ...
Страница 54: ...54 ...
Страница 55: ...Cross Reference Power Supply Circuit Reset Circuit Adjustment Base Unit 12 3 2 Handset 55 ...
Страница 76: ...19 HOW TO CHECK THE HANDSET RECEIVER 1 Prepare the digital voltmeter and set the selector knob to ohm 76 ...
Страница 77: ...meter 2 Put the probes at the receiver terminals as shown below 77 ...
Страница 84: ...27 CPU DATA BASE UNIT 27 1 IC2 BBIC 84 ...
Страница 105: ...105 ...
Страница 106: ...33 CABINET AND ELECTRICAL PARTS LOCATION HANDSET 34 CABINET AND ELECTRICAL PARTS LOCATION CHARGER UNIT 106 ...
Страница 107: ...35 ACCESSORIES AND PACKING MATERIALS 107 ...
Страница 108: ...35 1 KX TCD505CXV 35 2 KX TCA151EXV 108 ...
Страница 109: ...36 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 36 1 Base Unit 109 ...
Страница 132: ...TP3 R2 27 TP4 D1 2 1 J1 pinL DC_PLUG 22 Charge_minus TP1 TP2 R1 Charge_plus SCHEMATIC DIAGRAM CHARGER UNIT ...
Страница 137: ...PbF D1 J1 CIRCUIT BOARD CHARGER UNIT Component View ...
Страница 138: ...PbF R1 R2 TP4 TP1 TP2 TP3 CIRCUIT BOARD CHARGER UNIT Flow Solder Side View ...
Страница 139: ...PbF IC7 IC8 IC4 IC6 IC3 IC2 C103 1 1 1 1 22 44 23 1 8 4 5 38 65 102 103 128 64 39 24 48 25 11 28 18 Marked ...
Страница 141: ...IC3 IC2 IC1 IC10 PbF Marked ...
Страница 142: ...MIC INT 9 6 3 MAIL SP SW1 SOFT_A CLEAR TALK S1 0 8 5 2 7 4 1 R LED7 LED4 LED9 IC4 IC5 LED6 LED5 PbF Marked ...
Страница 143: ...PbF D1 J1 Marked PbF R1 R2 TP4 TP1 TP2 TP3 Marked Component View Flow Solder Side View ...
Страница 147: ...PbF R1 R2 TP4 TP1 TP2 TP3 Digital Volt Meter 12Ω 2W A DC Power Supply 6V ...