It is possible that your printer suction pipe has fallen off the carriage.
The only way to refit it is to completely remove from the outer casing and refit it from the underside, thJacken tie it with a twist or two of wire.
Also the ink jets can become blocked. I have this problem too!
Hence it is still on the bench!
Running the startup priming can quickly suck the ink from the cartridges as well. You could try resetting the cartridge chips with a resetting device, to give a full reading. Also make sure that the contacts are clean.
Jack
November 2007