Jose,

The 50 Error Code on the HP Laserjet II & III indicates that the Fuser or the
AC Powersupply is bad.  The fuser is the item in the rear that gets hot.
Normally it will be approx 300 degrees and it burns the toner to the paper.
It could be the AC Powersupply as the AC Power supply supplies the AC to the
Halogen Light bulb in the Fuser which is what keeps the temp at the desired
temp.

there is an off chance the DC Controller is also bad.

To replace the fuser you can normally get them for approx 50-60.00 US.

Larry Peterson

"Jose E. Dominguez" wrote:

> David go to partsnowinc.com and see what you can find there. Perhaps price
> the manual and/or the technical repair manual, depending on how much you
> want to fix it. It's a good printer. Try these place for error codes,
> http://www.all-laser.com/error.shtml
>
> HTH,
>
> Jose
>
> "Nasser, David" wrote:
>
> > Good Folk,
> >
> > An older friend needed a cpu fan and a video card for
> > his desktop system. So I brought over some parts and
> > fixed it for him.
> >
> > As payment, he insisted I take an HP Laserjet III that
> > had been given to him (not working) and which he
> > evidently dropped (damage unknown) while loading. :-)
> >
> > Now, I've always wanted an old LJ 'cause they do pretty
> > good fast text print and probably don't have the
> > 'leventy-seven zillion bells/whistles which the
> > newer printers have.
> >
> > I doubt I can fix it. But I gotta try.
> >
> > Searched the web (especially hp.com, Lord Love 'Em),
> > found next to nothing.
> >
> > Does anyone have some idea where I might be able
> > to find a manual for such a beasty? Does anyone
> > have an error code description for:
> >
> >    "50 Service"
> >
> > flashing on the control panel display?
> >
> > It is an HP LJ III Model # 33449.
> > I get the idea most of it works the same as
> > a LJ II.
> >
> > Any/all suggestions would be appreciated.
>
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--
Larry Peterson
SDSU Computing Services
ADM 124, Box 2201
Brookings, SD 57007
Fax 605.688.4605
Phone 605.688.6776

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