[sane-devel] Scanner Canon Maxify MB5150 lost WiFi pass phrase

[Ralph Little]

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 <rainer.woitok at gmail.com>
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
>
>
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