Components Description - Kenwood TK-2202 Service Manual

TX-RX UNIT (X57-6870-20)
Ref. No. Use/Function
IC1 IC PLL system
IC2 IC VCO 1/2 Divider
IC101 IC Comparator (APC)
IC201 IC FM IF system
IC301 IC Audio processor
IC302 IC AF AMP
IC401 IC Voltage regulator/ 5V
IC402 IC Voltage regulator/ 5V
IC403 IC Voltage detector / Reset
IC404 IC Voltage detector / INT
IC405 IC Microprocessor
IC406 IC EEPROM
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 FET RF Buffer AMP
Q7 Transistor DC switch / RX VCO
Q8 FET Ripple filter
Q9 Transistor RF AMP
Q102 Transistor RF AMP
Q103 FET TX Drive AMP
Q104 Transistor APC switch
Q105 FET APC switch
Q106 FET TX Final AMP
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 FET 5R switch
Q405 Transistor 5C switch
Q407 FET Beat Shift switch
Q408 FET Beat Shift switch

COMPONENTS DESCRIPTION

Operation/Condition
TK-2202/2206
Ref. No. Use/Function
D1 Diode Ripple Filter
Variable
D4 Frequency control / TX VCO
capacitance diode
Variable
D5 Frequency control / RX VCO
capacitance diode
Variable
D7 Frequency control / TX VCO
capacitance diode
Variable
D9 Frequency control / RX VCO
capacitance diode
Variable
D10 Modulator
capacitance diode
D11 Diode Current steering
D101 Diode TX/RX RF switch
D102 Zener diode APC protect
D103 Diode ANT switch
D104 Diode ANT switch
D105 Diode ANT switch
D106 Diode ANT switch
D202 Diode TX/RX RF switch
Variable
D203 RF BPF tuning
capacitance diode
Variable
D204 RF BPF tuning
capacitance diode
Variable
D205 RF BPF tuning
capacitance diode
Variable
D206 RF BPF tuning
capacitance diode
D301 Diode Detector
D302 Diode Detector
D303 Diode Isolation
D401 Diode 5V Protection
D402 Diode Reverse Protection
D403 LED LED/ Red
D404 LED LED/ Green
ADDITIONAL PCB
Ref. No. Use/Function
Q901 FET W/N Switch/ TX
Operation/Condition
Operation/Condition
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