Terminal Function; Tx-Rx Unit (X57-6990-10) (A/3) - Kenwood TK-8180 Service Manual

TK-8180
Display unit (X54-3480-10)
Pin No. Name
CN901 (to internal speaker)
1 GND Ground.
2 SPO Speaker output.
CN902 (to TX-RX unit B/3 CN429)
1 SPO Speaker input.
2 SPO Speaker input.
3 SPO Speaker input.
4 SPO Speaker input.
5 SPO Speaker input.
6 SPO Speaker input.
7 GND Ground.
8 8C 8V input.
9 SB Power input of switched power supply.
10 SB Power input of switched power supply.
11 NC Non-connenction.
12 PSW Detection signal output of power switch.
13 GND Ground.
14 GND Ground.
15 MIC MIC signal output.
16 ME MIC ground.
17 GND Ground.
18 PSENS Detection signal output of display unit.
19 RST2 Reset signal input.
20 GND Ground.
21 GND Ground.
22 GND Ground.
23 NC Non-connenction.
24 SHIFT/MODEL Control signal input of beat-shift function.
25 NC Non-connenction.
26 5C 5V output.
27 TXD Serial data signal input.
28 RXD Serial data signal output.
29 GND Ground.
30 GND Ground.
1 BLC MIC backlight control.
2 SB DC 13.6V± 15%, 200mA typ.
3 E Ground.
46

TERMINAL FUNCTION

Description
J901 (MIC jack)
Pin No. Name
4 PTT/TXD PTT : PTT input, TXD : Serial data output.
5 ME MIC ground.
6 MIC MIC signal input.
7 HOOK/RXD HOOK : Hook detection, RXD : Serial data input.
8 DM MIC data detection.

TX-RX unit (X57-6990-10) (A/3)

Pin No. Name
CN701 (to TX-RX unit B/3 CN427)
1 AUXIO6 AUX input/output 6.
2 AUXIO7 AUX input/output 7.
3 AUXIO1 AUX input/output 1.
4 AUXIO2 AUX input/output 2.
5 RXD2 Serial data output 2.
6 AUXIO3 AUX input/output 3.
7 TXD2 Serial data input 2.
8 AUXIO4 AUX input/output 4.
9 AUXIO8 AUX input/output 8.
10 AUXIO5 AUX input/output 5.
11 AUXIO9 AUX input/output 9.
12 AUXO1 AUX input 1.
13 TXD1 Serial data input 1.
14 AUXO2 AUX input 2.
15 RXD1 Serial data output 1.
16 GND Ground.
17 ME MIC ground.
18 MI2 External MIC output.
19 DEO Detected signal input.
20 GND Ground.
21 5C 5V.
22 DI Data signal output.
23 AFO RX filtered audio input.
24 SB Power input after power switch.
25 SB Power input after power switch.
26 SB Power input after power switch.
27 SB Power input after power switch.
28 SB Power input after power switch.
29 SB Power input after power switch.
30 NC Non-connenction.
Description
Description