Re: MacBook Air unable to connect to Epson ET-3800 printer
Wondering in what way you are trying to connect the Mac and wi-fi-printer,
and, if you haven't seen it already:
whether Apple Support's online article (link below) can help:
Add and manage printers on Mac - Apple Support
Eg: says:
"To use a printer, you must add it to your list of printers in Printers & Scanners settings. (If you switched from using a Windows computer to a Mac, Printers & Scanners settings is similar to the Printing control panel in Windows.)
When you add a printer, macOS uses AirPrint to connect to the printer. With AirPrint, you can print without installing an app, additional drivers or other software that could compromise your privacy.
If your printer isn’t compatible with AirPrint, install the latest software that came with the printer or from the manufacturer’s website."
Article also says:
"Before you begin
- On your Mac, update your printer software: Check with your printer’s manufacturer whether any updates are available.
- Prepare your printer: Use the instructions for your printer to unpack it, install ink or toner, and add paper. Turn on the printer and make sure it’s not displaying any errors."
If needed: There's a lot more info. in the linked article.
Please feel free to let us know if you need more assistance.