Kenwood TK-7180 Service Manual

Also see for TK-7180: Modification Information Function reference Brochure & specs Specification Instruction manual

TK-718022Display unit (X54-3480-10)Ref. No. Part Name DescriptionIC901 IC Voltage regulator/ 5VIC902 IC MicroprocessorIC903 IC LCD driverQ901,902 Transistor HOOK switchQ904 Transistor TX indication LED switchQ905 Transistor BUSY indication LED switchQ906 Transistor Dimmer switch controlQ907 Transistor Dimmer switchQ909 Transistor Backlight control switchQ910 Transistor 8C switchQ911 Transistor 8C switch controlQ913 Transistor Backlight controlD901,902 Zener diode Voltage protectionD903 Varistor Current limitterD904~906 Diode Surge protectionD907 LED TX/Busy indicationD909~920 LED LCD backlightD921~930 LED KEY backlightTX-RX unit (X57-6980-10)Ref. No. Part Name DescriptionIC1 IC Power moduleIC71,72 IC DC amp for TX APCIC171 IC RX 1st mixerIC172 IC FM IF system ICIC251 IC DC-DC converterIC301 IC PLL system ICIC302 IC PLL CP switchIC401 IC EEPROMIC402 IC RTC processorIC403 IC Shift registerIC404 IC MicroprocessorIC405 IC Flash memoryIC406 IC HSD BPF/HSD compalatorIC407 IC DET amp/Data LPF (DB-25)IC408 IC LSD buffer amp/VCXO bias ampIC409 IC LSD LPF/Voltage DC-referenceIC410 IC D/A converterRef. No. Part Name DescriptionIC411 IC RF BPF tuning voltage DC ampIC412 IC Modulation LPF/DET ampIC413 IC AF switch ICIC414 IC MIC ampIC415 IC AQUA-LIC416 IC Level converter IC (RS-232C)IC417 IC Audio ICIC801 IC Voltage detector (CPU reset)IC802 IC Voltage detector (INT)IC803 IC Voltage regulator/ 8VIC804,805 IC Voltage regulator/ 5VIC807 IC Voltage regulator/ 5VQ1 Transistor TX pre-driverQ2 Transistor TX driverQ3 Transistor TX gate switchQ72 FET High/Low power switchQ73 Transistor High/Low power switchQ103 Transistor Front-end LNAQ171,172 Transistor IF ampQ173,174 Transistor W/N CF switch controlQ175 Transistor Noise ampQ176 FET DET mute switchQ177 Transistor W/N CF switch controlQ178 Transistor W/N discrete switchQ180 Transistor W/N CF switch controlQ251 Transistor Ripple filterQ301 Transistor PLL f-in doubler ampQ302~304 Transistor PLL LPFQ305 Transistor PLL f-in filter switch controlQ306,307 FET TX/RX VCOQ308~310 Transistor TX/RX VCO switchQ311 Transistor VCO buffer ampQ312 Transistor Ripple filterQ313 Transistor VCO buffer ampQ314 Transistor PLL f-in filter switch controlQ402 Transistor Beat shift switchQ403 FET AF switch (Voice)Q405 Transistor AQUA control switchQ406 FET AF switch (LSD)Q409 Transistor AF mute switchCOMPONENTS DESCRIPTION