IBM 19 - Manual (Page 375)

Cable Pinouts
LocalTalk
The table below gives the correct pinouts for the printer end of the
8-pin LocalTalk cable used to connect a computer and printer:
Pinout:
LocalTalk Pin No. Name
3 TxD-
4 GND
5 RxD-
6 TxD+
8 RxD+
Macintosh to Serial
The table below gives the correct pinouts for a cable connecting
the Macintosh printer or modem port to the printer serial port. (This
type of cable would be required to reinstall printer system software
from a Macintosh if printer software is not functioning.)
Pinout:
Macintosh
to Serial Host Serial Signal Direction
Pin No. Pin No.
1 5 RTS From Mac
2 4 CTS To Mac
3 3 TxD From Mac
4,8* 7 GND
5 2 RxD To Mac
6 - NC
7 - NC
*Pins 4 and 8 must be connected at DIN-8
Appendix B
T e c h n i c a l S p e c i f i c a t i o n s B - 1 1
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