Rx Vco Unit (X58-4780-10); Tx Vco Unit (X58-4790-10); Components Description - Kenwood TKR-750 Service Manual

Ref. No. Part name
IC7 IC Shift register
IC9 IC FM IF system
IC10,11 IC Voltage regulator
IC600 IC EEPROM
IC601 IC Voltage detector
IC602 IC Shift register
IC603 IC Bus transceiver
IC604 IC CPU
IC605 IC Multiplexer
IC606 IC Bus transceiver
IC607,608 IC AF amplifier
IC609 IC Flash ROM
IC610,611 IC AF amplifier
IC612 IC Inverter
IC613 IC Counter
IC614 IC CODEC
IC615 IC D/A converter
IC616,617 IC AF amplifier
IC618 IC DSP
IC619 IC AF amplifier
IC620 IC RS-232C transceiver
IC621 IC NAND gate
IC622 IC Multiplexer
IC623 IC Shift register
IC624~628 IC Voltage regulator
IC629 IC AF power amplifier
IC630 IC Voltage regulator
IC631,632 IC AF amplifier
Q1~3 Transistor RF amplifier
Q4 Transistor Wide/Narrow switch
Q5,6 Transistor DC switch
Q7 Transistor Noise amplifier
Q8,9 Transistor RF amplifier
Q10 Transistor Current control
Q11 Transistor RF amplifier
Q12~15 Transistor Ripple filter
Q16~19 Transistor DC switch
Q23~26 Transistor DC switch
Q27 Transistor Wide 5kHz/Wide 4kHz switch
Q600 FET DC switch
Q601 Transistor DC switch
Q602 FET DC switch
Q603 Transistor Inverter

COMPONENTS DESCRIPTION

Description Ref. No. Part name
Q604 FET
Q605 Transistor
Q606 Transistor
Q607~609 Transistor
Q610 FET
Q611,612 Transistor
Q613,614 Transistor
Q615 Transistor
D1~4 Diode
D5 Diode
D7 Diode
D8 Diode
D11 Zener diode
D12 Diode
D13 Diode
D600 Diode
D606~612 Diode
D614~616 Diode
D618~623 Diode
D626 Varistor
D627,628 Diode
D629 Diode

RX VCO Unit (X58-4780-10)

Ref. No. Part name
IC300 IC
Q300~302 Transistor
Q350,351 FET
Q352~354 Transistor
Q355 Transistor
D350~353 Varicap

TX VCO Unit (X58-4790-10)

Ref. No. Part name
IC300 IC
Q300,301 Transistor
Q302 Transistor
Q350,351 FET
Q352~354 Transistor
Q355 Transistor
D350~353 Varicap
D354,355 Varicap
TKR-750
Description
DC switch
Inverter
AF mute switch
DC switch
DC switch
DC switch
Current control
DC switch
Wide/Narrow switch
Noise detection
DC switch
TX switch
Surge protector
DC switch
Noise detection
Surge protector
Surge protector
Surge protector
Surge protector
Current protector
Reverse current protector
Surge protector
Description
PLL
Buffer amplifier
VCO OSC
DC switch
Buffer amplifier
Frequency control
Description
PLL
Active filter
Buffer amplifier
VCO OSC
DC switch
Buffer amplifier
Frequency control
Modulation
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