Kenwood TK-260G ユーザーズマニュアル

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TK-260G/270G
23
IC1
IC
RF Power Module
IC2
IC
PLL system
IC3
IC
Comparator (APC)
IC4
IC
FM IF system
IC5,6
IC
Shift register
/ Output expander
IC7
IC
Voltage regulator
/ 5V
IC8
IC
Voltage detector
/ Reset
IC9
IC
Voltage detector
/ INT
IC10
IC
EEPROM
IC11
IC
AF Power amplifier
IC12
IC
Flash memory
IC13
IC
Microprocessor
IC14
IC
Audio processor
IC15(1/2)
IC
2Tone amplifier
IC15(2/2)
IC
AF Pre amplifier
IC16(1/2)
IC
Bias buffer
IC16(2/2)
IC
AF Buffer amplifier
IC17
IC
D/A converter (TX AF adjustment)
IC18
IC
DTMF decoder
IC19
IC
Active filter
/ For LSD in
IC301
IC
VCO 1/2 divider
Q1
Transistor
PLL IC fin amplifier
Q2
Transistor
VCO oscillation (TX)
Q3
Transistor
RF Buffer amplifier
Q4
Transistor
RF amplifier
Q6
Transistor
RF amplifier
/ TX driver
Q7
FET
DC switch
Q8,Q9
Transistor
DC switch
Q10
FET
VCO oscillation (RX)
Q11
Transistor
Ripple filter
Q12
Transistor
Tripler
Q13
Transistor
DC switch
Q14
Transistor
2
nd
 IF W/N switch sets to on when Narrow
Q15
Transistor
DC switch
Q16
Transistor
DC switch
/ 5R
Q17
Transistor
2
nd
 IF W/N switch sets to on when Wide
Q18
Transistor
DC switch
/ 5T, Save
Q19
FET
Mixer
Q20,Q21
Transistor
DC switch
/ 5T, Save
Q22
Transistor
IF amplifier
DISPLAY UNIT (X54-3250-10) (TK-270G Only)
Q23
Transistor
DC switch
/ W/N audio amplitude adjust
Q24
Transistor
DC switch
/ LED (Red)
Q25
Transistor
DC Switch
/ LED (Green)
Q26
Transistor
DC switch
/ Squelch
Q27
FET
DC switch
/ 5T, Save
Q28
Transistor
DC switch
/ 5M
Q30
FET
SP Mute switch
Q31
Transistor
Clock frequency shift
Q32~34
Transistor
DC switch
/ SP Mute
Q35(1/2)
FET
Mute switch
/ MIC line mute
Q35(2/2)
FET
DC switch
Q36
FET
Mute switch
Q301
FET
RF amplifier
D1
Diode
Unlock detect
D2
Variable
Frequency control
capacitance diode
D3
Diode
ANT switch
D4
Variable
Frequency control
capacitance diode
D5
Diode
TX/RX switch
D6
Variable
TX modulation
capacitance diode
D7
Diode
ANT switch
D8
Zener Diode Overload protection
D9
Variable
Frequency control
capacitance diode
D10
Diode
ANT switch
D11
Variable
Frequency control
capacitance diode
D12
Diode
Current steering
D13,14
Diode
RF switch (2
nd
 IF wide/narrow)
D15
Diode
Reverse protection
D17
Diode
Model check
D18
LED
LED/ Red, Green
D19
Diode
Model check
D21
Diode
Voltage drop
D22
Diode
Reverse protection
D23
Diode
Voltage clamp
D302,303,305
Variable
Rf BPF turnig
capacitance diode
IC501
IC
LCD driver
Q501
Transistor
Current driver
/ LCD back light LED AVR
Q502
Transistor
DC switch
D505
Diode
Speed up
D506
LED
LCD back light
D507
Diode
Voltage reference
D508~510 LED
LED
/Key pad back light
D511
LED
LCD back light
D512~516 LED
LED
/Key pad back light
Ref. No.
Use/Function
Operation/Condition
Ref. No.
Use/Function
Operation/Condition
TX-RX UNIT (X57-587X-XX)
Ref. No. Use/Function
Operation/Condition
DESCRIPTION OF COMPONENTS