I'm using a PSC 1610 all in one printer. Occasionally, the top half of the printed text is cut off near the bottom of the page. This doesn't happen on the full page but just near the bottom. I've done a cleaning, alignment and have run a diagnostic page. On the alignment and diagnostic pages I get black and color bands. The top portion of the black band is cut off on both. The cartridges are about half full of ink. Should I try anything before I try changing the black cartridge??