Kenwood TK-8180 User Manual
TK-8180
22
Display unit (X54-3480-10)
Ref. No.
Part Name
Description
IC901
IC
Voltage regulator/ 5V
IC902
IC
Microprocessor
IC903
IC
LCD driver
Q901,902
Transistor
HOOK switch
Q904
Transistor
TX indication LED switch
Q905
Transistor
BUSY indication LED switch
Q906
Transistor
Dimmer switch control
Q907
Transistor
Dimmer switch
Q909
Transistor
Backlight control switch
Q910
Transistor
8C switch
Q911
Transistor
8C switch control
Q913
Transistor
Backlight control
D901,902
Zener diode
Voltage protection
D903
Varistor
Current limitter
D904~906
Diode
Surge protection
D907
LED
TX/Busy indication
D909~920
LED
LCD backlight
D921~930
LED
KEY backlight
TX-RX unit (X57-6990-10)
Ref. No.
Part Name
Description
IC1
IC
Power module
IC71,72
IC
DC amp for TX APC
IC171
IC
RX 1st mixer
IC172
IC
FM IF system IC
IC251
IC
DC-DC converter
IC301
IC
PLL system IC
IC302
IC
PLL CP switch
IC401
IC
EEPROM
IC402
IC
RTC processor
IC403
IC
Shift register
IC404
IC
Microprocessor
IC405
IC
Flash memory
IC406
IC
HSD BPF/HSD compalator
IC407
IC
DET amp/Data LPF (DB-25)
IC408
IC
LSD buffer amp/VCXO bias amp
IC409
IC
LSD LPF/Voltage DC-reference
IC410
IC
D/A converter
Ref. No.
Part Name
Description
IC411
IC
RF BPF tuning voltage DC amp
IC412
IC
Modulation LPF/DET amp
IC413
IC
AF switch IC
IC414
IC
MIC amp
IC415
IC
AQUA-L
IC416
IC
Level converter IC (RS-232C)
IC417
IC
Audio IC
IC801
IC
Voltage detector (CPU Reset)
IC802
IC
Voltage detector (INT)
IC803
IC
Voltage regulator/ 8V
IC804,805
IC
Voltage regulator/ 5V
IC807
IC
Voltage regulator/ 5V
Q1
Transistor
TX pre-driver
Q2
Transistor
TX driver
Q3
Transistor
TX gate switch
Q70
Transistor
High/Low power switch
Q72
FET
High/Low power switch
Q103
Transistor
Front-end LNA
Q171,172
Transistor
IF amp
Q173,174
Transistor
W/N CF switch control
Q175
Transistor
Noise Amp
Q176
FET
DET mute switch
Q177
Transistor
W/N CF switch control
Q178
Transistor
W/N discrete switch
Q179
Transistor
W/N CF switch control
Q251
Transistor
Ripple filter
Q301
Transistor
PLL f-in doubler amp
Q302,303
Transistor
PLL LPF
Q306,307
FET
TX/RX VCO
Q308~310
Transistor
TX/RX VCO switch
Q311
Transistor
VCO buffer amp
Q312
Transistor
Ripple filter
Q313
Transistor
VCO buffer amp
Q402
Transistor
Beat shift switch
Q403
FET
AF switch (Voice)
Q405
Transistor
AQUA control switch
Q406
FET
AF switch (LSD)
Q409
Transistor
AF mute switch
Q410,411
Transistor
MIC AGC
Q412
FET
AF mute switch
COMPONENTS DESCRIPTION