11 Apr
2008
11 Apr
'08
1:14 p.m.
--- "Roy J. Tellason" <rtellason at verizon.net> wrote:
First is that right next to the usual parallel
connection there's another
connector, a DB25. That bit seems to be a little
loose, and I'm thinking
plug-in board maybe?
Yup. A lot of OkiData printers had their parallel
ports on a plug in card, which in turn has a connector
on it for a piggyback serial interface board. IIRC
it's held in with some plastic clips.
The other thing is that attached to that connector
is a little adapter, which
has an RJ-45 socket on the back side of it. The
plug side of it has only a
small number of the 25 pins actually installed. If
I can figure out a way to
pop the shell open maybe I'll trace it out,
otherwise I'll probably take the
ohmmeter approach. :-)
That's pretty common as well for serial interfaces.
Using these little RJ45 adapter dongles made serial
cables much easier (and cheaper). Need null modem?
Change the dongle. In-wall wiring was easier, with
RJ45's at the wall. There isn't much of a standard
wiring for these, unfortunately. They were sold as
"kits" with no pins inserted, and a prewired RJ45
connector. You inserted the pins into the DB25 and
clipped the thing together.
-Ian