Kenwood TK-80 Service Manual
Also see for TK-80: Service manual
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Contents
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TK-8097KAT-2 (Internal Automatic Antenna Tuner)1. Automatic 1) Display: 2MHz Oscilloscope AT TC1 Check SW meter decreases,antenna Mode: CW Dummy then AT is stop.tuner check Dummy load: 20Ω loadSet silver-point of TC1 to 45°Press [AT TUNE] key2) Dummy load: 150ΩPress [AT TUNE] key3) Dummy load: 50ΩPress [AT TUNE] keyTerminal FunctionCN No. Pin No. Pin Name FunctionCN3 1 POD1 VC101 position detection signal2 POD2 VC102 position detection signal3 VREF AT reference voltage (5V)4 ATG AT GND5 PR22 Motor rotation direction control 46 PR21 Motor rotation direction control 37 PR12 Motor rotation direction control 28 PR11 Motor rotation direction control 19 ATA AUTO/THRU switch10 APRE Preset control select11 SPED Motor speed control12 ATI Preset AT install. “L”: Install13 14S 14V (switched)14 5A 5V15 DGND Digital GND16 DGND Digital GNDItem ConditionMeasurement Adjustment Specifications/RemarksTest-equipment Unit Terminal PartsUnit MethodAdjustmentSilver-pointCN No. Pin No. Pin Name FunctionW1 1 AT1 AT signal 12 GND GNDW2 1 AT2 AT signal 22 GND GNDW103 1 24AT AT band bata 22.00000~26.99999MHz2 21AT AT band bata 19.00000~21.99999MHz3 18AT AT band bata 14.50000~18.99999MHz4 28AT AT band bata 27.00000~29.99999MHz5 14AT AT band bata 8.00000~14.49999MHz6 4AT AT band bata 2.40000~4.49999MHz7 7AT AT band bata 4.50000~7.99999MHz8 GND GND |
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