Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!cs.utexas.edu!bcm!shell!tardis!got
From: got@tardis (Gordon Tillman)
Newsgroups: comp.sys.next
Subject: Problem: ?Could not open /dev/np0!
Keywords: printer, np0, problems
Message-ID: <1991Apr21.030827.20464@shell.shell.com>
Date: 21 Apr 91 03:08:27 GMT
Sender: usenet@shell.shell.com (USENET News System)
Distribution: usa
Organization: Shell Oil
Lines: 43

Hello all!

I was happily computing away on my '030 NeXT and went
to print something.  I got an error message saying that
I did not have a printer attached.

After making a quick check of all cables and retrying
to no avail, I tried using the command

    /usr/etc/nppower on

The command returns: ?Could not open /dev/np0!

The man page on nppower says:

    `?Could not open /dev/np0!' will be printed if no printer is
    connect to the printer port.

Well, since then, I have ohm'd out the printer cable.  It's ok.  I checked
to make sure I had AC power to the printer.  That's fine too.

I even pulled the metal plate off the bottom of the printer and looked 
around.  I removed the little board that the interface cable plugs in
to and saw a fuse on it.  I checked the fuse -- it's good.

I also tried booting off another disk to make sure that I didn't have
a software problem.

Does anyone have any ideas of what else I might try?



Thanks a million for any advice!


Gordon Tillman
Shell Oil
got@shell.com


-- 
Gordon Tillman                                        got@shell.com
Operational Programming - Geophysical                 Shell Oil Co.