Is the computer only connected to the Router via Ethernet, or does it use Wifi also?
Appletalk can only be active on one interface at a time.
Do these printers only allow Appletalk setup?
Any electrical storms or problems in your area lately? Ethernet ports are very sensitive & may quit working, giving you a cable isn't connected warning when they go out.
The computer is only connected via Ethernet. No Wifi.
They are older printers and only allow Appletalk setup.
No storms or recent problems.
Only thing that's different – as far as I know – is that one time I didn't follow my usual shut down procedure and left apps open.
And, the mystery is why/how one printer works if AppleTalk is actually off. And, if it's the Ethernet port or cable that is the problem, how can the one printer still print?
Thanks for your assistance.
Swapping cables from one printer to the other didn't help. However, that gave me the idea of removing the cables from the router and plugging them directly into the computer. Bypassing the router has them printing again! So, the router is the culprit. I'll replace it asap. Meanwhile, I can live with the direct hookups for the 2 printers. Oddly, the third printer works fine going through the router so I'll leave that as is for now.
I had given up until your suggestions pointed me in the "cable swap" direction. BDAqua, thanks for your help resolving this.