Hi I don't know about this device but the MF4770n that i have has either an internal battery or capacitor that is charged when it is switched on and holds the setup for a month or so. Maybe yours is the same and is failing.
Cheers, Ralph On Tue, Nov 25, 2025, 06:01 Dr Rainer Woitok <[email protected]> wrote: > Greetings, > > after a few days of not using our scanner I switched it on yesterday, > but it failed to connect to our WiFi until I again set the pass phrase. > Today though, it did connect after powering up. > > Does anybody out there know what kind of storage holds this pass phrase > and whether or not some coin cell is involved which may have drained? > Searching the manual for "coin" and "cell" did not turn up anything, but > this could just mean that replacing the coin cell requires some screw > drivers and thus is not as straight forward as replacing an ink cart- > ridge. > > Any hints welcome :-) > > Sincerely, > Rainer > >
