The award for the best link of the day goes to...
jepinto
I am a very contented woman. Through the link
fixyourprinter.com, I was able to get some other tips about my printer. It seems there was a very flimsy pin which had popped out of it's holder. The Blue button tip helped me to get my
printer to feed the paper out of the top thereby ending the constant sound of the Star Trek like voice saying: "excuse me, your printer LaserWriter 320 has paper misfeed."
What had been happening was, the errant pin was supposed to hold the feed in a different position than what it was, and the Blue Button was in the correct feed up mode, I think, but I'not sure, that the misfeeding made the paper either curl, causing a real misfeed; or pop the back door open which caused the light to come on, as though it were a real paper misfeed. Whatever it was, MrsLop (alias, Mrs Fixit) is happy to say the printer is now behaving reasonably well and has printed it's 7425 sheet.
Thank you jepinto for the best link of the day!