Kenwood TK-7180H Service Manual page 68

Pin No. Name
30 DM DTMF MIC data output
J901 (MIC jack)
1 BLC MIC backlight control
2 SB DC 13.6V± 15%, 200mA typ.
3 E Ground
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 (X57-6980-XX) (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
TERMINAL FUNCTION
Description
Description
TK-7180H/7182H
Pin No. Name
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 No connection
J701 (ACC 25-pin)
1 NC No connection
2 RXD1 Serial data input 1. RS-232C level.
Input voltage range : ± 30V max.
L≤0.4V, H≥2.4V, Zi≥5kΩ
3 TXD1 Serial data output 1. RS-232C level.
L≤–5V, H≥5V/3kΩ load, Zo≤2kΩ
4 AUXI/O9 AUX input/output 9.
Active low with 47kΩ pull-up to 5V
5 DI Data signal input.
2.0Vp-p typ.
6 MI2 External MIC input (DC-coupled)
7 GND Ground
8 AUXI/O8 AUX input/output 8. Same as AUXI/O9
9 TXD2 Serial data output 2. TTL level.
L≤0.7V, H≥4.2V/25kΩ load, Zo≤1kΩ
10 RXD2 Serial data input 2. TTL level.
Input voltage range : +5/0V max.
L≤0.8V, H≥4.2V
11 GND Ground
12 AUXI/O7 AUX input/output 7. Same as AUXI/O9
13 AUXI/O6 AUX input/output 6. Same as AUXI/O9
14 SB Power output after power switch.
DC13.6V± 15%, 2.0A max.
15 AUXO2 AUX output 2. Open collector (500mA max.)
(Default none) L≤0.3V
16 AUXO1 AUX output 1. Same as AUXO2
17 AFO RX filtered audio output (DC-coupled).
AF low level output.
Wide : 700mVp-p typ.
Narrow : 700mVp-p typ. (Standard modulation)
18 GND Ground
19 DEO Detected signal output (DC-coupled).
740mVp-p typ.
20 AUXI/O5 AUX input/output 5. Same as AUXI/O9
Description
67