Thanks for your quick response.
I neglected to mention that I had attempted to disable the printer's chip sensor using the procedure on page 4 of the instructions before I corresponded with you. I did it again this morning and got the same message: "Wrong cartridge. Release ink lever," then, "Replace with new cartridge" with a blinking light on the #1 black.
Following the instructions for 7600/9600 (Item #4), when I got to "ED Mode," pressing "Enter" did not enable "Down Arrow to 0." I had to press the right arrow to enable
"Scroll Down to *0."
I then pressed "Enter" and turned the power off and, as I mentioned above, got the "Wrong cartridge..." message.
Any ideas on what I should try next?
Thanks again, TomL