Compaq Deskpro 4000N - Desktop PC, Maintenance & Service Manual

Page: 136 / 174

A-2 Connector Pin Assignments
Table A-3
Parallel Interface
Connector and Icon Pin Signal
1 2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19 20 21 22 23 24 25
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18-25
Strobe
Data Bit 0
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
Acknowledge
Busy
Paper End
Select
Auto Linefeed
Error
Initialize Printer
Select IN
Signal Ground
Table A-4
Serial Interfaces
Connector and Icon Pin Signal
1 2 3 4 5
6 7 8 9
1
2
3
4
5
6
7
8
9
Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator