"I have a canon BJ330 that starts printing light and prints nothing. This only happens approx once every 2 months. The unit has ink and it still thinks it's printing but there is no ink on the paper. This has happened a couple of times and so far I haven't figured out what it is that I do to 'correct' the problem. I was thinking that there must be a way to clean the printhead that is not in the service manual. Which I do not have, anyway."
On my DeskJet, I just blow gently into the vent hole on the ink cartridge. I then wipe off blob of ink that forms on on the head and it works like a charm - if you don't get ink all over everything. Perhaps, try the following first:
(From: russrite@magmacom.com).
Remove the sponge from the purge cap carefully, try washing in water carefully, and reinstall it:
Remove the top cover to expose the printer power on the printer when the printhead moves away from home position SHUT OFF the power
You will see a rubber rectangle cap towards the bottom of it is the sponge (called an 'Ink Absorber')
