Open up the printer, and look for the "carriage" that goes back and forth (on metal rails) over the paper while printing. This is the printhead.
You'll remove the ink cartridges from the printer, then remove the carriage/print head (there will be a small lever at the side/rear of it that lifts up to release) and clean the metal electrical contacts/pins on back of the head, as well as where they made up inside the printer.
Dry well, then reseat the head and cartridges.
Then reset the machine:
unplug power at the wall outlet
wait 5 minutes
press and hold the power/on button for 60+ seconds
keep holding while plugging back in, and for another 60 seconds after, then release
If still no change, then replacing the head would be the next step. Again though, this simply isn't worth it. The cost of the head alone is up to twice much as a new printer, and it isn't even a guaranteed fix, it's only about a 50/50 shot of it working. Your printer has 2 separate heads, one for black/yellow, and one for cyan/magenta, both have to be replaced:
If looking for a replacement, I’d recommend any of the Epson workforce series printers. They tend to be very reliable, are easy to set up and use, have good print quality, and reasonably priced ink. Example: http://amzn.to/1DUoWAl
If you have any other questions, just let me know. Otherwise, please do remember to rate my service prior to logging off, hopefully I have earned an “excellent”. I also invite you to contact me directly with any future support needs at http://bit.ly/1Md4aNC
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