If The Output Is Distorted Or Unintelligible; If The Plotter Has Drawn A Different Plot Than The One You Were Expecting; If Pen Settings Seem To Have No Effect - HP Designjet 350C User Manual

If the output is distorted or unintelligible

There is a possible explanation if the serial interface is in use:
If you are using a serial interface between the plotter and your computer, make
sure the plotter's serial interface settings match the settings and requirements of
your software and hardware. To check or change the plotter's settings, use the
Setup Sheet.
If the plotter has drawn a different plot than the one you were
expecting
?!
You may have pressed Replot (giving you a copy of the last plot) or may have
accidentally initiated one of the plotter's internal plots. For a summary of these
plots and how to print them, see page 5–2.

If pen settings seem to have no effect

!
You may have changed them in the Setup Sheet but forgotten to fill in the oval
called "Use settings from tables below."
You may expect the software-driven pen settings but the Setup Sheet is set to
"Use settings from tables below".
Solving problems with plot position or content
Troubleshooting
9–11