Kenwood TK-3401D Service Manual page 13

Ref. Part Name
No.
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
Q403 Transistor
Q404 FET
Q405 FET
Q600 Transistor
Q601 FET
Q602 FET
Q603 FET
Q604 Transistor
Q605 Transistor
Q606 FET
Q703 FET
Q704 Transistor
Q705 Transistor
Q706 Transistor
Q707 FET
Q708 Transistor
Q709 Transistor
Q710 Transistor
Q711 Transistor
Q712 Transistor
Q713 FET
Q714 Transistor
Q715 Transistor
Q716 FET
D4 Variable capacitance diode RX VCO tune
D5 Variable capacitance diode TX VCO tune
Description
DC switch (Assist)
PLL Fin amplifier
Q1 control
Rippler filter
RX VCO
TX VCO
Q8 control
TX/RX VCO DC switch
Buffer amplifier
RF amplifier
Pre-drive amplifier
Discharge switch
APC control switch
Drive amplifier
DC switch (APC)
Final amplifier
DC switch (Power control)
DC switch (Power control)
Tripler (2nd local)
1st IF amplifier
1st mixer
RX RF amplifier
DC switch (BUSY LED)
DC switch (50T)
DC switch (50R)
DC switch (MIN VOL)
DC switch (RED LED)
DC switch (BLUE LED)
DC switch (33MS )
Level shift (TXD)
MIC mute switch
MIC AGC amplifier
MIC AGC amplifier
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)
Ref. Part Name
No.
D7 Variable capacitance diode RX VCO tune
D9 Variable capacitance diode TX VCO tune
D10 Diode
D11 Variable capacitance diode TX assist
D12 Variable capacitance diode RX assist
D13 Variable capacitance diode Modulation
D14, 15 Diode
D200 Zener diode
D201- Diode
204
D400- Variable capacitance diode RX BPF tuning
404
D405 Variable capacitance diode RX notch tune
D600 Diode
D601 LED
D602 LED
D603 Diode
D604 LED
D700, Diode
701
D702 Diode
D703 Diode
Description
Speed up
TX/RX switch
Over voltage protection
Antenna switch
Voltage drop
Green (BUSY)
Red (TX)
Voltage prevention
Blue
AF detector (MIC)
AF detector (VOX)
Limiter
(No.RA012<Rev.001>)1-13