Kenwood TK 7180 Service Manual 2

Page 9

1 TERMINAL FUNCTION

1.5 Front Panel Terminal

(TK-7180/ 8180 only)

The front panel terminal is equipped with the 14-pin
connector.

Table 1-5 The Front Panel Terminal Pin Assignment

"7112 Name l/O Function
1 SPI I Front Panel Speaker Input
2 GND < Ground
3 8C - 8 V Power Supply
4 SB ~ Power Supply (Switched B)
5 RA O Audio Output (for SP'MIC)
6 PSW I Power Switch Control Input
7 MIC l Mic input
8 ME ~ Mic Ground
9 PSENS l Panel Sens Input
10 TXD O Serial Data Output
11 RXD I Serial Data Input
12 GND ~ Ground
13 SHIFT O Beat Shift Output
14 RST2 O Sub-u com Reset Output

1.6 Modification of Serial Port
Level

(TK-7180/ 8180 only)

The TXD2 and RXD2 of the 25-pin connectors are
configured at the C MOS level (0/ 5 V) as a factory default
setting.

You can convert the level to the R8232 level (:12 V) by
configuring the port. The following procedures shows how
to change the serial port level to the RS232 level.

1. Remove the top cover of the TK-7180/ 8180
transceiver.

- Lift the top cover by widening two side tabs. Then,
pull upward to remove the top cover from the
transceiver body.

Version: 1.13 USA

Modification Information 5