Description Of Components - Kenwood TK-8102H Service Manual

Display Unit (X54-3340-20)
Ref. No. Parts Name
D1~4 LED Key backlit
D5 LED Monitor key light
D6 LED Programmable key light
D7~10 LED Channel key light
D11 LED Busy
D12 LED Transmit
Q1 Transistor Monitor key light switch
Q2,3 Transistor Channel key light switch
Q4 Transistor Busy light switch
Q5 Transistor Programmable key light switch
Q6,7 Transistor Channel key light switch
Q8 Transistor Transmit light switch
Q9,10 Transistor Key backlit switch
TX-RX Unit (X57-6390-20)
Ref. No. Parts Name
D1 Diode Surge absorption / PTT
D2 Diode Surge absorption / HOOK
D3 Diode Surge absorption / MICBL
D4 Diode Surge absorption / CM
D6 Diode DC switch
D7 Diode Votage dropped
D9 Varicap RX VCO
D10 Varicap TX VCO
D11 Varicap RX VCO
D12 Varicap TX VCO
D13 Diode IF switch (Wide/Narrow)
D14 Varicap Modulation
D15 Diode IF switch (Wide/Narrow)
D16 Diode Lipple filter
D18 Diode Detection
D19 Diode RF switch (TX/RX)
D21,22 Varicap RF BPF tuning
D23 Diode Temperature compensation
D24 Diode Limitter
D25,26 Varicap RF BPF tuning
D28 Varicap RF BPF tuning

DESCRIPTION OF COMPONENTS

Description
Description
Ref. No. Parts Name
D38 Diode Reverse connect protection
D39 Diode Over voltage detection
D41 Poly switch Current protection
D43 Diode OR gate /MIC mute, AGC
D44 Diode AGC
D800 Diode Voltage protection
D801~804 Diode ANT switch
D805,806 Diode APC voltage detect
D807 Diode Temperature compensation
Q2 FET MIC mute
/ Active while MICEM is H
Q3 Transistor RF amplifier / PLL F in
Q4,5 Transistor Charge pump
Q6 Transistor Buffer amplifier
/ 16.8MHz 3rd over tone
Q7 FET T/R switch
Q10 FET RX VCO
Q11 FET TX VCO
Q12 Transistor T/R switch
Q13 Transistor Beat shift
/ Active while beat shift is on
Q14 Transistor Lipple filter
Q15 Transistor Buffer amplifier / Output of VCO
Q16 Transistor Ignition / Ignition sens.
Q18 Transistor Noise amplifier
Q19 Transistor IF amplifier
Q20 Transistor RF amplifier / Output of VCO
Q21 FET Mixer
Q22 FET AF mute
/ Active while MUTE1 is H
Q23 Transistor RF amplifier / Preamplifier
Q24 Transistor Buffer amplifier / RX audio
Q25 Transistor RF amplifier / Drive stage
Q26 FET RF amplifier / LNA
Q27 Transistor APC control
Q29 Transistor DC switch (8R)
/ Active while RX
Q30 Transistor DC switch (8T)
/ Active while TX
TK-8102H
Description
17