Since i changed the empty Black catridge (using anoriganal HP product CE320a)
the printed docs are a very faint Grey. All print jobs have faint grey instead of black.
The Three color catridges are at 55% and black is at 95%.
Is this a problem with the Sensors ?? if so where are they and how can i clean them ?
No Error messages.
any one have an idea ??
best regards
John
