User Activity

I have replaced the Printhead. Reinstalled the Software. Still not printing - Blank pages come out. Can anyone make any other suggestions as to other troubleshooting I can do. I LOVE this printer & want to repair it, rather than replace it. Thanks!
Set up my printer for Wireless & it is communicating to the printer. Only problem is that nothing prints . . . Goes through the motions of printing but the page is blank. Any suggestions?  
I love my MX870, but after setting it up on wireless I cannot print anything.  CAnnot even print the head cleaner pages. The Ink Tanks are all full. Seems software related. Can anyone suggest ways to fix this.