Compaq Prosignia 190 Maintenance And Service Manual page 32

4 Data Bit 2
5 Data Bit 3
6 Data Bit 4
7
Data Bit 5
8
Data Bit 6
9
Data Bit 7
* = Active low
Connector
Connector
13 Select
14 Auto Linefeed*
15 Error*
16
Initialize Printer*
17
Select In*
18-25
Signal Ground
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Serial Connector
Pin Signal
1 Carrier Detect
2 Receive Data
3 Transmit Data
4 Data Terminal Ready
5 Signal Ground
6 Data Set Ready
7 Ready to Send
8 Clear to Send
9 Ring Indicator
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Keyboard/Mouse
Pin Signal