Compaq 800 Series Maintenance And Service Manual page 135

Pin Signal
1 Strobe*
2 Data bit 0
3 Data bit 1
4 Data bit 2
5 Data bit 3
6 Data bit 4
7 Data bit 5
8 Data bit 6
9 Data bit 7
*Signal is active low.
Maintenance and Service Guide
Table A-4
Parallel
Pin Signal
10 Acknowledge*
11 Busy
12 Paper out
13 Select
14 Auto line feed*
15 Error*
16 Initialize printer*
17 Select in*
18-25 Signal ground
Connector Pin Assignments
A–3