I have the same printer, which is now out of commission. I talked to an authorized service person and they told me that it's a known problem with the mechanism and that it has to be sent to HP to be fixed. They are replacing the entire insides for about $60 (a price the service person quoted). Since ours was three years old, we just bought a new printer. Eli & Miri Oren wrote: > > My HP InkJet 660C printer makes loud "Klick" sounds and part of the > printing is blurred. > While this happens on "Normal" and "High quality", the results on > "fast" mode are acceptable (but still, the printer keeps klicking...) > Any idea what should I look for ? > ELI OREN >