Description Of Components - Kenwood TK-7102 Service Manual

TK-7102
Display Unit (X54-3340-20)
SYMBOL PARTS NAME
D1~4 LED
D5 LED
D6 LED
D7~10 LED
D11 LED
D12 LED
Q1 TRANSISTOR
Q2,3 TRANSISTOR
Q4 TRANSISTOR
Q5 TRANSISTOR
Q6,7 TRANSISTOR
Q8 TRANSISTOR
Q9,10 TRANSISTOR
TX-RX Unit (X57-6290-20)
Ref. No. Use/Function
D1 DIODE
D2 DIODE
D3 DIODE
D4 DIODE
D6 DIODE
D7 DIODE
D9 VARICAP
D10 VARICAP
D11 VARICAP
D12 VARICAP
D13 DIODE
D14 VARICAP
D15 DIODE
D16 DIODE
D18 DIODE
D19 DIODE
D20 DIODE
D21 VARICAP
D22 VARICAP
D23 DIODE
D24 DIODE
D25 VARICAP
D26 VARICAP
D27 DIODE
D30 DIODE
D31 DIODE
16

DESCRIPTION OF COMPONENTS

DISCRIPTION
KEY BACKLIT
MONITOR KEY LIGHT
PROGRAMMABLE KEY LIGHT
CHANNEL KEY LIGHT
BUSY
TRANSMIT
MONITOR KEY LIGHT SW
CHANNEL KEY LIGHT SW
BUSY LIGHT SW
PROGRAMMABLE KEY LIGHT SW
CHANNEL KEY LIGHT SW
TRANSMIT LIGHT SW
KEY BACKLIT SW
Operation/Condition
SURGE ABSORPTION /PTT
SURGE ABSORPTION /HOOK
SURGE ABSORPTION /MICBL
SURGE ABSORPTION /CM
DC SWITCH
VOTAGE DROPPED
RX VCO
TX VCO
RX VCO
TX VCO
IF SWITCH (WIDE/NARROW)
MODULATION
IF SWITCH (WIDE/NARROW)
LIPPLE FILTER
RECTIFICATION
RF SWITCH(TX/RX)
TEMPERATURE COMPENSATION
RF BPF TUNING
RF BPF TUNING
TEMPERATURE COMPENSATION
LIMITTER
RF BPF TUNING
RF BPF TUNING
TEMPERATURE COMPENSATION
ANT SW
ANT SW
Ref. No. Use/Function
D34 DIODE
D36 DIODE
D38 DIODE
D39 DIODE
D41 POLY SW
D43 DIODE
D44 DIODE
Q2 FET
Q3 TRANSISTOR
Q4 TRANSISTOR
Q5 TRANSISTOR
Q6 TRANSISTOR
Q7 FET
Q10 FET
Q11 FET
Q12 TRANSISTOR
Q13 TRANSISTOR
Q14 TRANSISTOR
Q15 TRANSISTOR
Q16 TRANSISTOR
Q18 TRANSISTOR
Q19 TRANSISTOR
Q20 TRANSISTOR
Q21 FET
Q22 FET
Q23 TRANSISTOR
Q24 TRANSISTOR
Q25 TRANSISTOR
Q26 FET
Q27 TRANSISTOR
Q29 TRANSISTOR
Q30 TRANSISTOR
Q31 TRANSISTOR
Q32 TRANSISTOR
Q33 TRANSISTOR
Operation/Condition
APC VOLTAGE DETECT
APC VOLTAGE DETECT
REVERSE CONNECT PROTECTION
OVER VOLTAGE DETECTION
CURRENT PROTECTION
OR GATE /Mic Mute, AGC
AGC
Emergency Mic mute
/Active while MICEM is H
RF AMP /PLL Fin
CHARGE PUMP
CHARGE PUMP
BUFFER AMP
/16.8MHz 3rd over tone
T/R SW
RX VCO
TX VCO
T/R SW
BEAT SHIFT
/Active while Beat shift is on
LIPPLE FILTER
BUFFER AMP /Output of VCO
IGNITION /Ignition Sens.
SQL AMP
IF AMP
RF AMP /Output of VCO
MIXER
AF MUTE
/Active while Mute1 is H
RF AMP /Drive stage
BUFFER AMP /RX Audio
RF AMP /Drive stage
RF AMP /LNA
APC CONTROLLER
DC SWITCH(8R)
/Active while RX
DC SWITCH(8T)
/Active while TX
DC SWITCH(8R)
/Active while RX
AF MUTE
/Active while Mute2 is H
DC SWITCH(8T)
/Active while TX