You can download the manual from Software & Downloads
here.
Then work through
this article and see
here to diagnose the printing problem. Make sure the print quality is set for photos in the print preferences or properties.
You might try cleaning the cartridge contacts as described
here.
Make sure you are using a good quality paper, that it is feeding correctly,
I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!