Printronix L1024 - Manual (Page 120)

B–16 Host I/O Interfaces
Diagnostic Port
This interface is used for connection with a computer port to run diagnostic tests
using software driven diagnostics. The connections, with a six pin RJ11
connector, are made as shown in Figure B–2 and Table B–7.
1 6
Figure B–2. Diagnostic Port
Table B–7. Diagnostic Port Interface Pin Assignments
Pin Signal Direction
1 No Connection
2 RX To Printer
3 GND
4 TX From Printer
5 Ground
6 No Connection