Kenwood TK-8180 - Manual (Page 22)

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