I have good ews and bad news.
The good news: it was the power cable; my printer is working.
The bad news: I have to stand to scan pages. I put the final page into the scanner and sat down. Annabelle, who likes to sleep in my chair, decided to sleep and I sat on her; I lost my balance and fell onto the floor. I ended up opn my back, and I could noit raise myself to get up. I lay there for a while yelling for help that never came, then I managed to reach my cell phone and called Jen. She came down and helped me up. Luckioly, nothing was injured in the fall.