I found two HP Pen Plotters in a closet at work. One is a 2 pen 7470, the
other is a 6 pen 7475.
There is also a bunch of pens (50) that still work..
I powered up the 7470 and it works from the front panel. The self test
prints an *.
I haven't tried the RS232 interface yet.
I don't have the manuals for these plotters. I do have a summary of the
switch setting and RS-232 pinout.
Does anyone want them? Does anyone have access to the manuals?
Michael Holley
www.swtpc.com/mholley