I have a CX3600 printer, i think the head layouts are very similar. You can try www.internet-ink.co.uk who will sell you a special ink cartridge that has cleaning fluid instead of ink, I found that useful. However, if you're desperate, you can apply a cotton bud to the underside of the ink cartridges as they sit in the printer. After a small amount of rummaging around you'll find ink on the cotton bud head - that's where the printing head is. Use a couple of cotton buds and see if that clears any blockage. DON'T use force and try and scrub an ink blockage off, you'll only damage the nozzles.
Duck Fart, September 2006
