Kenwood TK-860HG Service Manual

Contents

56TK-860HG/862HGTERMINAL FUNCTIONCN1 (TX-RX Unit)Pin No. Name Function1 8C DC 8V output.2 5S DC 5V output.3 AUX5 SMRD : Reset output. *14 AUX6 5SC : 5S control (Cannot use). *15 NC Non-connection6 AUX3 SMCK : Clock pulse output. *1SQ : Squelch detect output. *27 AUX1 SMRQ : Ack Req input. *1PTT : External PTT input. *28 AUX4 TXD : Serial control data output. *19 AUX2 RXD : Serial control data input. *1DTC : Data channel control/External hook input.CHDATA : Channel control serial data input.10 ALT Alert tone input.11 AFO Receiver audio signal output.12 AFI Reseiver audio signal input.13 MII Transmit audio signal input.14 MIO Transmit audio signal output.15 GND GroundCN2 (TX-RX Unit) ←→ CN501 (Control Unit)Pin No. Name Function1 SFTDT Serial data for IC9 (Shift register).2 UL Lock detect.3 PLST Strobe signal for IC3 (PLL IC).4 PLDT Serial data for IC3 (PLL IC).5 PLCK Clock pulse for IC3 (PLL IC).6 RSSI Receive signal strength indicator.7 ASQ Analog squelch.8 TO Transmit sub-tone signal output.9 SFTST Strobe signal for IC9 (Shift register).10 DAST Strobe signal for IC6 (Shift register).11 CNTDT Control serial data for IC6.12 CNTCK Control clock pulse for IC6.13 W/N Change signal of wide or narrow.14 CTO Received sub-tone signal.15 DTMFIO DTMF signal.16 MO Modulation signal.17 AFO Receiver audio signal.18 SB Switched B.19 SB Switched B.20 PSW Power switch.21 AUX3 Optional unit control signal.22 AUX1 Optional unit control signal.23 AUX4 Optional unit control singal.24 AUX2 Optional unit control signal.25 EMG Foot switch input signal.26 8C DC 8V.27 MM MIC mute.28 MI External MIC input signal.29 OE Output enable.30 ALT Alert tone signal.31 DEO Receiver detector output.32 MII Transmit audio signal input.33 MIO Transmit audio signal output.34 GND Grond.CN3 (TX-RX Unit)Pin No. Name Function1 HOR Horn alert/call output.2 E Ground.3 SB Switched B+, DC 13.6V output, Maximum 1A.CN4 (TX-RX Unit)Pin No. Name Function1 DEO Receiver detector output.Level : 0.5Vrms (Atandard modulation)2 DTC Data channel control/External hook input.3 IGN Ignition sense input.4 DI Data modulation input.5 ME External microphone ground.6 MI EXternal microphone input.7 PTT External PTT input, active low.8 SQ Squelch detect output.CN5 (TX-RX Unit)Pin No. Name Function1 AM Speaker mute input, active high.2 MM MIC mute input, active high3 EMG EMG : Foot switch input, active low. *3CN7 (TX-RX Unit)Pin No. Name Function1 PA/LI Relay for PA function KAP-1 control.“H” : PA/LI on, “L” : PA/LI off2 SPO Audio signal output to KAP-13 SPI Audio signal inpt from KAP-1CN8 (TX-RX Unit)Pin No. Name Function1 SP Audio signal output to internal/external speaker.2 E GroundJ501 (Control Unit)Pin No. Name Function1 MBL MIC backlight control.2 PSB 13.6V.3 GND Ground.4 PTT/TXD PTT.5 ME MIC ground.6 MIC MIC signal input.7 HOOK/RXD Hook detection8 CM MIC data detection.CN101 (PLL/VCO) ←→ TX-RX UnitPin No. Name Function1 CV Control voltage input.2 MD Modulation input.3 8CL 8V input.4 E Ground.5 HT Signal output.6 RX (ST) Switched transmit input. H : Transmit*1 : SmarTrunk OMNI mode*2 : MDT mode*3 : Emergency mode

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