Kenwood TK-760HG, Service Manual

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8
TK-760HG/762HG
54
TERMINAL FUNCTION
CN1 (TX-RX Unit)
Pin No. Name Function
1 8C DC 8V output.
2 5S DC 5V output.
3 AUX5 SMRD : Reset output. *1
4 AUX6 5SC : 5S control (Cannot use). *1
5 NC Non-connection
6 AUX3 SMCK : Clock pulse output. *1
SQ : Squelch detect output. *2
7 AUX1 SMRQ : Ack Req input. *1
PTT : External PTT input. *2
8 AUX4 TXD : Serial control data output. *1
9 AUX2 RXD : Serial control data input. *1
DTC : 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 Ground
.
CN2 (TX-RX Unit)
←→
CN501 (Control Unit)
Pin No. Name Function
1 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/TXS 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 Function
1 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 Function
1 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 Function
1 AM Speaker mute input, active high.
2 MM MIC mute input, active high
3 EMG/TXS EMG : Foot switch input, active low. *3
CN7 (TX-RX Unit)
Pin No. Name Function
1 PA/LI Relay for PA function KAP-1 control.
“H” : PA/LI on, “L” : PA/LI off
2 SPO Audio signal output to KAP-1
3 SPI Audio signal inpt from KAP-1
CN8 (TX-RX Unit)
Pin No. Name Function
1 SP Audio signal output to internal/external speaker.
2 E Ground
J501 (Control Unit)
Pin No. Name Function
1 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 detection
8 CM MIC data detection.
CN101 (PLL/VCO)
←→
TX-RX Unit
Pin No. Name Function
1 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