Compaq A3000 scan issue (by 3 users)

I have had this all-in-one for several years with no issues. The other day I tried to scan something to print and an error message on the display says "Add Right Cart." It just beeps and will not scan. Both cartridges are new, I cleaned the contacts and replaced them, I printed a test page, printed a "clean the heads" page, and everything seems fine. I also printed a picture I had saved on the computer and it prints just fine. I tried restarting the computer and restarting the printer. I have checked all the connections. Everything seems fine. I then decided to try and just scan the image to the PC and then print it off. But, the scanner started scanning and then just stopped about a 1/8th of the way across. I went and looked at the saved image and it was fine except that it was only an 1/8th of the page. I then tried to rescan it but an error message came up saying that the scanner was locked and needed to be unlocked. There isnt even a utility to do that! I restarted the printer, the scanner bar reset, and I tried it again. Same result.
So, those are my two issues, both were discovered at the same time, and I havent had either of those problems before. I just wanted to know if anyone had any ideas before I go out and buy a new all-in-one. Thank-you in advance