The following cable configurations will support serial connections to the
Personal LaserWriters, the original LaserWriters and the LaserWriter II family.
Use a RS-232 Null Modem cable. The DB-25 end goes into the printer, and
depending on what kind of port it has, either a DB-9 or DB-25 goes into the
computer.
Cable configuration for DB-9 to DB-25:
PC Printer
DB9 DB25
1 4
2 2
3 3
4 5&6
5 7
6&8 20
7 8
9 NC
PC Printer
DB25 DB25
1 1
2 3
3 2
4 5
5 4
6 8&20
7 7
8&20 6
PC Printer
DB 25 DB9 (LW Pro)
1 5
2 2
3 3
4 8
5 7
6 1&4
7 5
8&20 6
PC Printer
DB9 DB9
1&4 6
2 3
3 2
5 5
6 1&4
7 8
8 7
Article Change History:
11/18/93- Added corrected cable pinouts