Kenwood TK-780 Service Manual

Also see for TK-780 series: Programming instructions Instruction manual Service manual supplement Service manual Instruction manual

20TK-780R6R5R84 R51 R13R12R167R24R94R168INSTALLATION1-3. Data Equipment ConnectionThe jumpers must be set to either one for each function.Otherwise, the radio will not work properly.ME/AMR12 (0Ω) R167 (0Ω) Function / DefaultYes No AM DefaultNo Yes MEMI/TXSR94 (0Ω) R24 (0Ω) Function / DefaultYes No TXS DefaultNo Yes MILOK/AMR5 (0Ω) R6 (0Ω) Function / DefaultYes No AMNo Yes LOK DefaultDTC/LOK/TXS/FSWR168 R84 R51 R13 Function / Default(0Ω) (0Ω) (0Ω) (0Ω)No No No Yes LOKYes No No No DTC DefaultNo No Yes No TXSNo Yes No No FSWTX-RX unit (A/2)Component side viewNote : The following parts are not installed at the time ofshipping; R5,R13,R24,R51,R84,R167TX-RX unit (A/2)Foil side view2. Accessory Terminal (TX-RX Unit)2-1. External Connector Accessory Terminal MethodConnector Pin Pin I/O FunctionNo. No. nameCN1 1 DEO O Detect signal output. (Output level :250mVrms; standard modulation)2 AHK I External hook signal input.On hook : L, Off hook : H3 IGN I Ignition sense input.4 DI I External modulation signal input.5 ME – MIC earth.AM I Audio mute signal input.6 MI I Internal MIC input.TXS O Signal indicating whether thetransceiver is transmitting or not.TX : H7 PTT I External PTT signal input.TX : L8 SQ O Squelch signal output. Signal logictype can select "Carrier operate relay"or "Tone operate relay". Active logiclevel or type can select in the KPG-60D.CN2 1 AM I Audio mute signal input.LOK O TX logic signal output. Active logiclevel is low. Active type can beselectable in the KPG-60D.2 MM I MIC mute input.3 DTC I Data control channel signal input.Data channel : L, Normal channel : HTXS O Signal indicating whether the trans-ceiver is transmitting or not.TX : HFSW I Foot switch signal input.Foot sw on : L, Foot sw off : HLOK O TX logic si2gnal output. Active logiclevel is low. Active type can beselectable in the KPG-60D.CN3 1 HOR O Horn alert signal output. Signaloutput for horn relay drive (opencollector). L level during horn drive :Max. sink current 100mA.L level when AUX A is on.2 E – Earth.3 SB O Power output after power switch(DC 13.2V± 15%, 0.75A max.).CN4 1 LOK O TX logic signal output. Active logiclevel is low. Active type can beselectable in the KPG-60D.