From: Bill on
I've been using this Xerox Docuprint P 12 for years and have collected
spare toner cartridge assemblies when they have been available. I
believe it's similar to a LaserJet II.

It has started printing a grey line about1/2inch wide down every page,
so the question is should I unwrap and install one of my hugely (to me
anyway) expensive toner cartridges in the hope that that will cure the
problem, or is it likely to be a fault somewhere else in the machine. If
it's the latter I can put the unopened toner on ebay or somewhere.

I've tried wiping the slider thing across the toner assembly, but that
hasn't helped. Is there anything else to try?
--
Bill