Are you getting - 'Internals need service message'?
Download the following software
This may come to you in Russian, if it does search the page for the English version
Set it to your machine model.
Right clickin the bottom task bar icon.
Learn to use the various modes offered- especially 'Reset Counters' and 'Echange cartridges'
Remove all the carts and reset them firmly one by one.
Still in trouble?
Take a look at click here