Components Description - Kenwood TKR-740 Service Manual

TX UNIT (X56-3072-70)
PIN. No Parts name
IC1,2 IC AVR
IC3 IC D/A CONVERTER
IC4 IC SHIFT REGISTER
IC100 IC AVR
IC101 IC PLL
IC102,103 IC AVR
IC105 IC AF AM P
IC106 IC EEPROM
IC107 IC AF AM P
IC108 IC AVR
IC109 IC BUFFER AM P
IC110 IC AVR
IC200 IC AND GATE
IC201 IC PLL
IC202 M OS IC DDS
IC203 IC DC AM P
IC204 IC COM PARATOR
IC205 IC AVR
IC206 IC INVERTER
IC301 IC POWER M ODULE
IC302 IC COM PARATOR
IC303 IC DC AM P
Q1,2 FET VCO OSC
Q3,4 TRANSISTOR DC SWITCH
Q5 FET DC SWITCH
Q6 TRANSISTOR BUFFER AM P
Q7 TRANSISTOR RIPPLE FILTER
Q8 TRANSISTOR DC SWITCH
Q9 TRANSISTOR RF AM P
Q11,12 TRANSISTOR DC SWITCH
Q13 TRANSISTOR RF AM P
Q14 FET RF AM P
Q15 FET BUFFER AM P
Q17,18 FET DC SWITCH
Q21 TRANSISTOR DC SWITCH
Q102 TRANSISTOR BUFFER AM P
Q106 TRANSISTOR DOUBLER
Q107~109 TRANSISTOR RF AM P
Q110 TRANSISTOR DC SWITCH
Q112 FET SQ SWITCH
Q113 FET DC SWITCH
Q114 TRANSISTOR DC SWITCH
Q115 TRANSISTOR RF AM P
Q201 TRANSISTOR VCO OSC
Q202 TRANSISTOR BUFFER AM P
Q203 FET DC SWITCH
Q205 TRANSISTOR RF AM P
Q206 FET DC SWITCH
Q207 TRANSISTOR INVERTER
Q208 FET DC SWITCH
Q240 TRANSISTOR BUFFER AM P
Q241 TRANSISTOR RF AM P
Q242 TRANSISTOR BUFFER AM P

COMPONENTS DESCRIPTION

DESCRIPTION PIN. No Parts name
Q301 TRANSISTOR DC AM P
Q302,304 TRANSISTOR DC SWITCH
Q308 TRANSISTOR DC SWITCH
Q309 TRANSISTOR DC SWITCH
D1-4 VARICAP FREQ. CONTROL
D5,6 VARICAP M ODULATION
D7 DIODE RF SWITCH
D11,12 DIODE CURRENT STEERING
D50,51 LED LOCK INDICATOR
D52 LED TX INDICATOR
D101,103 DIODE RF SWITCH
D201 VARICAP FREQ. CONTROL
D202 VARICAP FREQ. CONTROL
D203 VARICAP M ODULATION
D204 DIODE CURRENT STEERING
D205 DIODE RF DETECTOR
D206 VARISTOR CURRENT PROTECTOR
D303 SURGE ABSORBER SURGE PROTECTOR
D304 DIODE CURRENT STEERING
D305 DIODE REVERSE VOLTAGE PROTECTOR
D306,308 DIODE RF DETECTOR
D310 VARISTOR CURRENT PROTECTOR
D318 DIODE CURRENT STEERING
D320 ZENER DIODE HIGH VOLTAGE PROTECTOR
D500 VARISTOR CURRENT PROTECTOR
TKR-740
DESCRIPTION
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