Components Description - Kenwood TK-3402(U) Service Manual

TX-RX unit (X57-8320-10)
Ref. No. Use / Function
IC2 IC
IC3 IC
IC200 IC
IC400 IC
IC600 IC
IC601 IC
IC602 IC
IC603 IC
IC604 IC
IC605 IC
IC700 ROM IC
IC702 MCU
IC703 IC
IC704 IC
IC705 IC
IC706 IC
IC707 IC
IC708 IC
IC709 IC
Q1 FET
Q2 TRANSISTOR
Q3 FET
Q4 TRANSISTOR
Q5 FET
Q6 FET
Q7 FET
Q8 FET
Q9 TRANSISTOR
Q10 TRANSISTOR
Q201 TRANSISTOR
Q203 TRANSISTOR
Q205 FET
Q206 FET
Q207 TRANSISTOR
Q208 FET
Q209 FET
Q210 TRANSISTOR
Q400 TRANSISTOR
Q401 TRANSISTOR
Q402 TRANSISTOR
Q403 TRANSISTOR
Q404 FET
Q405 FET
Q600 TRANSISTOR
Q601 FET

COMPONENTS DESCRIPTION

Operation / Condition
PLL system
DC AMP(CV)
DC AMP(APC)
IF system
Voltage detector(INT)
Voltage regulator(50M)
Voltage regulator(50C)
Voltage regulator(50V)
Voltage regulator(33M)
Voltage detector(reset)
EEPROM
Microprocessor
Voltage regulator(33B)
DC AMP(BPF1 tune)
Baseband system
DC AMP(VOX)
AF power amplifi er(EXT)
AF amplifi er
AF power amplifi er(INT)
DC switch(MOD)
Fin buffer amplifi er
Q1 conrol
Ripple fi llter
RX-VCO
TX-VCO
Q8 control
T/R VCO DC switch
Buffer amplifi er
RF amplifi er
Pre-amplifi er
Dischage switch
APC control switch
Drive amplifi er
DC swich(APC)
Final amplifi er
DC swich(Power control)
DC swich(Power control)
Tripler(2nd LO)
Q402 control
W/N switch
1st IF amplifi er
1st mixer
RX RF amplifi er
DC switch(BUSY-LED)
DC switch(50T)
TK-3402(U)/3402/3407
Ref. No. Use / Function
Q602 FET
Q603 FET
Q604,605 TRANSISTOR
Q606 FET
Q701,702 TRANSISTOR
Q703 FET
Q704 TRANSISTOR
Q705,706 TRANSISTOR
Q707 FET
Q708 TRANSISTOR
Q709 TRANSISTOR
Q710 TRANSISTOR
Q711 TRANSISTOR
Q712 TRANSISTOR
Q713 FET
Q714 TRANSISTOR
Q715 TRANSISTOR
Q716 FET
D601 LED
D602 LED
D604 LED
D1 DIODE
VARIABLE CAPACITANCE
D4
DIODE
VARIABLE CAPACITANCE
D5
DIODE
VARIABLE CAPACITANCE
D7
DIODE
VARIABLE CAPACITANCE
D9
DIODE
D10 DIODE
VARIABLE CAPACITANCE
D11
DIODE
VARIABLE CAPACITANCE
D12
DIODE
VARIABLE CAPACITANCE
D13
DIODE
D14 ,15 DIODE
D200 ZENER DIODE
D201-204 DIODE
VARIABLE CAPACITANCE
D400-404
DIODE
VARIABLE CAPACITANCE
D405
DIODE
D600 DIODE
D603 DIODE
D605 ZENER DIODE
D700,701 DIODE
D702 DIODE
D703 DIODE
Operation / Condition
DC switch(50R)
DC switch(MIN-VOL)
DC switch(TX,BLUE-LED)
DC switch(33MS)
Beat shift switch
Level shift(TXD)
MIC mute switch
MIC AGC AMP
Level shift(RXD)
DC switch(EXT-PTT)
Q710 control
DC switch(IC707 SB)
Q715 control
Pop noise mute control
AF switch(EXT SP)
DC switch(IC709 SB)
Q714 control
AF switch(EXT SP)
GREEN(BUSY)
RED(TX)
BLUE
Speed up(PLL UL)
RX VCO tune
TX VCO tune
RX VCO tune
TX VCO tune
Speed up
TX assist
RX assist
MOD
T/R switch
Over voltage protection
ANT switc
RX BPF tuning
RX notch tune
Voltage drop
Voltage prevention
Over voltage protection
AF detector(MIC)
AF detector(VOX)
Limiter
15