One World Touch OP 1200, Service Manual

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Service Manual version 1008
OP 1200/1500/1700 (PC920 Intel 945G)
6-63
6.1.6.10. COM2
COM2 is a RS-232, 422 or 485, selected via BIOS setup.
Pin # Signal Pin # Signal
1 DCD/422TX- 2 DSR
3 RXD/422TX+ 4 RTS
5 TXD/422RX+ 6 CTS
7 DTR/422RX- 8 RI
9 GND 10 KEY
6.1.6.11. COM3
COM 3 is an internal RS-232 reserved for touchscreen. Its corresponding pin assignment is listed as
below;
Pin # Signal Pin # Signal
1 DCD 2 DSR
3 RXD 4 RTS
5 TXD 6 CTS
7 DTR 8 RI
9 GND 10 VCC
6.1.6.12. CD1: CD Audio IN
Pin # Signal
1 Left channel
2 CD GND
3 CD GND
4 Right channel
6.1.6.13. IR: IR/CIR Connector
IR
Pin # Signal
1 5V
2 NC
3 IRRX
4 GND
5 IRTX
6 CIRRX