[rescue] LaserJet 4 glitch

[wa2egp at att.net]

-------------- Original message ----------------------
From: Phil Stracchino <alaric at metrocast.net>
>
> hike wrote:
> > On Sat, Oct 25, 2008 at 6:03 PM, Phil Stracchino <alaric at metrocast.net>wrote:
> >> My trusty Laserjet 4M Plus (now something like 14 years old) has
> >> developed a minor but annoying problem.  Every time it first warms up
> >> from power-saving mode to begin a print job, it is convinced that it has
> >> a paper jam.  99 times out of 100, it's imagining it.  Simply opening
> >> and closing the top cover without touching anything else clears the
> >> problem, and it goes on to print without further ado.  Nevertheless,
> >> it's annoying.
> >>
> >> Has anyone else ever encountered this problem, and know the cure?
> > 
> > The problem, from my experience is a worn, failing part.
> > 
> > if it gives an error code, the code will give the problem and the hp printer
> > book will give the fix.
> 
> Nope, no error code.  Just "Paper jam".
> 
> > if your hp has a metal frame, it is worth replacing the part.
> 
> It's a 14-year-old LaserJet 4 from when HP was still HP.  Of *course* it
> has a metal frame.  :)

Maybe the sensor that indicates a paper jam needs to be readjusted or replaced.  Just a thought.

Bob