🚀 go-pugleaf

Your developer is depleted.  The U22 is the printer trying
to charge the developer.  The only solution is to replace the
developer unit.  There used to be a developer rebuild kit
available.  They discontinued it because of problems.  I
might have one kicking around the shop.  A new developer
is over $150.

Jacques Huard <j_huard@hotmail.com> wrote in message
news:3919E1E7.54B5B595@hotmail.com...
>    I have a Panasonic KXP-4450 and it complains about not having any
> toner.  Let me explain.  When you turn on the printer it displayes 'WARM
> UP' and after it completes this phase it displays the errOr 'TONER
> CHARGING U22' at which time you can here the printer purr while the
> developer toner roller cycles.  This goes on for about a minute and a
> half when finally the printer stops and displays 'CALL SERVICE E13'   I
> have checked the toner tank and even added a little toner (it was
> already full).  The master unit is in excellent condition and the
> printer is in over all good condition particularly since it is so old.
> I looked and found a sensor that must detect the toner/ferrous
> concentration on the bottom of the developer and I am guessing that it
> must not be detecting proper toner concentrations.  Can anyone give me
> some suggestions?  I think that this might be something simple.  I have
> already checked and cleaned all electrical contacts and interior parts
> but no avail...  Thanks for any help.
>
>    Jacques Huard
>
>    j_huard  @  hotmail.com
>