Components Description; Terminal Function - Kenwood TK-3212 Service Manual

COMPONENTS DESCRIPTION / TERMINAL FUNCTION
TX-RX UNIT (X57-7130-XX)
Ref. No. Part name
IC1 IC PLL system
IC101 IC Comparator (APC)
IC201 IC FM IF system
IC301 IC Audio processor
IC302 IC AF AMP
IC401,402 IC Voltage regulator/ 5V
IC403 IC Voltage detector / Reset
IC404 IC Voltage detector / INT
IC405 IC Microprocessor
IC406 IC EEPROM
IC407 IC Frequency divider
Q1 Transistor Tripler
Q2 Transistor PLL IC f_in AMP
Q3 FET VCO / RX
Q4 FET VCO / TX
Q5 Transistor DC switch / TX VCO
Q6 Transistor RF buffer AMP
Q7 Transistor DC switch / RX VCO
Q8 Transistor Ripple filter
Q9 Transistor RF AMP
Q100 Transistor RF AMP
Q101 FET RF AMP
Q102 FET TX drive AMP
Q103 FET TX final AMP
Q104 Transistor APC switch
Q105 FET APC switch
Q107 Transistor APC switch
Q108 FET APC switch
Q109 Transistor APC switch
Q202 Transistor W/N switch / RX
Q203 Transistor IF AMP
Q204 FET Mixer
Q205 FET RF AMP
Q301 Transistor W/N switch / TX
Q302 Transistor MIC AGC
Q303 Transistor DC switch / SP mute
Q304 Transistor DC switch
Q305 Transistor DC switch / SP mute
Q306 FET SP mute switch
Q316 FET SP mute switch
Q401 Transistor LED switch / Red
Q402 Transistor LED switch / Green
Q403 FET 5T switch
Q404 Transistor 5R switch
Q405 Transistor 5C switch
Q407,408 FET Beat shift switch
Q901 FET W/N switch / TX
Description
TK-3212/3217
Ref. No. Part name
D1 Diode Ripple filter
D2 Varicap Frequency control / TX VCO
D3 Varicap Frequency control / RX VCO
D4 Varicap Frequency control / TX VCO
D5 Varicap Frequency control / RX VCO
D6,7 Varicap Frequency control / TX VCO
D8,9 Varicap Frequency control / RX VCO
Modulator
D10 Varicap
D11 Diode Current steering
D101 Diode TX/RX RF switch
D102 Zener diode APC protect
D103,104 Diode ANT switch
D106 Diode ANT switch
D122 Diode ANT switch
D202 Diode TX/RX RF switch
D203-206 Varicap RF BPF tuning
D210 Varicap RF BPF tuning
D301,302 Diode Detector
D303 Diode Isolation
D401 Diode 5V protection
D402 Diode Reverse protection
D403 LED LED/ Red
D404 LED LED/ Green

TERMINAL FUNCTION

■ CN401
Pin
Name I/O
No.
1 B I B (Battery Voltage)
2 SB O Switched B
3 AFI I Audio input
4 AFO O Audio output
5 GND - GND
6 UP I Encoder pulse input
7 DOWN I Encoder pulse input
8 GND - GND
■ CN402
Pin
Name I/O
No.
1 GND - GND
2 NC - No connection
3 SB O Switched B
4 5M - Power supply
5 GND - GND
6 DI I Transfer data
7 CL I Synchronization clock
8 CE I Chip enable
9 DO O Output data
10 GND - GND
Description
Function
Function
17