Kenwood TK-2170 Service Manual

Also see for TK-2170 SERIES: Service manual Function reference Instruction manual Instruction manual Specifications

TK-217029Pin No. Port Name I/O Function94 BB RDF/FD I BB RDF/FD95 TCLK/DTRDO I BB TCLK and DTRDO96 5RC O 5R control97 KEY1O O Key matrix output98 KEY2O O Key matrix output99 KEY3O O Key matrix output100 KEY4O O Key matrix output101~108 D7~D0 I/O Data bus 7~0109 DT O Serial data110 CK O Serial clock111 AUX3 I/O Auxiliary 3112 AUX1 I/O Auxiliary 1113 AUX6 I/O Auxiliary 6114 AUX2 O Auxiliary 2115 AUX5 O Auxiliary 5116 AUX4 I/O Auxiliary 4117 BATTSEL I BATT select118 THP I TX thermal input119 VOLIN I VOL input120 VOXIN I VOX input121 ASQ I RX analog SQ. input122 RSSI I RX RSSI input123 BATTLVL I BATT level124 AGND - DGND (Vss)125 LSDIN I Low speed data input126 VREF - 5V (Vref)127 AVCC - 5V (AVcc)128 KEY1 O Key matrix 1 inputTX-RX unit (X57-7000-XX)Ref. No. Use / Function Operation / ConditionIC1 IC Voltage detector / INTIC2 IC Voltage regulator / 5VIC3 IC Voltage detector / RESETIC4 IC Shift registerIC5 IC Shift registerIC6 IC LCD driverIC7 Microprocessor MicroprocessorIC8 IC Flash memoryIC9 IC EEPROMIC10 IC DET amplifier / VREFIC11 IC LSD filterIC12 IC TX SUM amplifierIC13 IC Audio processorIC14 IC AF switchIC15 IC RX HSD filterIC16 IC D/A converterIC17 IC TCXO buffer amplifierIC18 IC AF amplifierIC19 IC RX BPF tune voltage amplifierIC501 IC PLL systemIC601 IC Comparator (APC)IC701 IC FM IF systemQ1 Transistor 5T voltage controlQ4 (1/2) Transistor AVR / 5CQ4 (2/2) Transistor AVR / 5TQ5 (1/2) FET 5TC switchQ5 (2/2) FET Save switchQ6 Transistor 5C voltage controlQ7 FET TX/RX indicator controlQ8 Transistor 5R control switchQ9 Transistor 5MS control switchQ12 Transistor Back light controlQ13 Transistor Back light DC supplyQ14 FET RX AF muteQ15 FET SSB DC supply control switchQ16 Transistor SSB DC supply switchQ17 Transistor CPU clock shift switchQ19 FET VOX level detector control switchQ21 Transistor AF switchSEMICONDUCTOR DATA / COMPONENTS DESCRIPTION