Casio QT-2000 Service Manual page 11

3-2. Interface pin asignment
Com1: Hand held scanner HHS-9 (Location : CN2 on E580-CNB)
Pin No. Description
1 TXD1
2 RXD1
3 RTS1
4 CTS1
5 DSR1
6 DTR1
7 GND
8 NC
9 VCC
10 NC
11 GND
12 NC
13 NC
14 NC
15 GND
Com2 : R/J printer (Location : CN1 on E580-CNB)
Pin No. Description
1 NC
2 RXD2
3 TXD2
4 DTR2
5 GND
6 DSR2
7 RTS2
8 CTS2
9 NC
Com3 : Modem / PC (Location : CN4)
Pin No. Description
1 CD3
2 RXD3
3 TXD3
4 DTR3
5 GND
6 DSR3
7 RTS3
8 CTS3
9 CI3
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