Components Description - Kenwood TK-3170 Service Manual
Uhf fm
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Also See for TK-3170:
- Service manual (71 pages) ,
- Function reference (142 pages) ,
- Instruction manual (117 pages)
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TK-3170/3173
Ref. No.
Use / Function
Q23
Transistor
Q24
FET
Q25,26
FET
Q27
Transistor
Q28
FET
Q29
FET
Q30
FET
Q31,32
Transistor
Q33
FET
Q34
FET
Q35
FET
Q501
Transistor
Q502
FET
Q503
FET
Q504
FET
Q505
Transistor
Q506
Transistor
Q507
Transistor
Q601
FET
Q602
FET
Q603
FET
Q604
FET
Q605
Transistor
Q606
FET
Q607
Transistor
Q608
Transistor
Q609
FET
Q701
Transistor
Q702
Transistor
Q703
Transistor
Q704
FET
Q705
FET
D1
Diode
D2
LED
D4
Diode
D5
LED
D7
LED
D8,9
LED
30
COMPONENTS DESCRIPTION
Operation / Condition
AF amplifier DC supply control switch
AF amplifier DC supply switch
MIC ALC
AF mute control switch
AF mute switch
Logic inverter
MIC mute switch
Audio processor clock shift switch
TX HSD side tone mute
Ext. alert input ATT switch
AF mute switch
F-IN amplifier
TX VCO oscillator
RX VCO oscillator
TX/RX VCO DC switch
Ripple filter
RF buffer amplifier
RF amplifier (Common)
RF amplifier
Pre-drive amplifier
TX drive amplifier
RF final amplifier
APC voltage switch
APC voltage switch
APC DC switch
APC mute switch
APC mute switch
2nd local tripler
W/N switch / RX
IF amplifier
Mixer
RF amplifier
5M protect
TX/RX indicator
Back light current control
LCD back light
LCD back light
10 key back light
Ref. No.
Use / Function
D12,13
LED
D14~16
Diode
D17
Diode
D24~27
Diode
D28
Diode
D29
Diode
D30,31
Diode
D32
Diode
D33
Varistor
D501
Diode
D502,503
Diode
D505
Variable
capacitance diode
D507
Variable
capacitance diode
D509
Variable
capacitance diode
D511
Variable
capacitance diode
D513
Variable
capacitance diode
D514
Diode
D515
Diode
D516
Diode
D517
Diode
D601
Zener diode
D604~606
Diode
D608
Diode
D701,702
Diode
D703~708
Variable
capacitance diode
D901
Diode
TH501
Thermistor
TH701,702
Thermistor
F901
Fuse
Operation / Condition
10 key back light
Radio state detector
RX DET mute control voltage
discharge
Key input detect
AF reference voltage bias supply
VOX level detector
MIC input level detector
VOX amplifier gain limiter
Surge absorber
Fast lock up diode
F-IN filter shift switch
Frequency control / TX VCO
Frequency control / TX VCO
Frequency control / RX VCO
Frequency control / RX VCO
TX VCO modulator
Ripple filter stabilization diode
RX local switch
TX RF switch
Fast lock up diode
APC voltage limiter
ANT switch
ANT switch
Ceramic filter W/N switch
RX BPF tuning
Voltage limiter
TX temperature protect
Temperature compensation for ASQL
Fuse : 2.5A/32V/1608 size
(F53-0324-05)
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