numeric pad not illuminated when resetting the drum on my MFC-L2720DW

Joined
Oct 15, 2017
Messages
5
I just reset the toner count on my MFC-L2720DW following these instructions I found by googling:

Access Settings: Press the Menu button, then use the arrow keys to navigate to Settings > All Settings > Machine Info > Parts Life.

Reset: Press and hold the # (pound) key until the reset menu appears.

Confirm: Select Drum, then confirm by pressing OK or Yes, and press the Home button. The printer will initialize, and the error message should clear.

The only problem I had was that after getting to the second step in the above procedure, the numeric key pad with the "#" was not visible. Fortunately, after using a function (copy) that displays the numeric pad, and marking where the "#" is located with a bit of tape, I found that pressing and holding at this location did the trick.

that said, if a function like resetting a drum needs the numeric pad, wouldn't it be a good idea for it to be illuminated so it can readily be seen?
 
Joined
Oct 23, 2025
Messages
6
Those actions are undocumented secret sauce so hiding the keypad is part if keeping them secret. these are in internal service documents that still haven't found their way to tge public. Apparently brother employees are very loyal

The 8850 had a similar reset that used the invisible keypad. I went to fax mode and outlined the keys with tape. Don't cover them as the capacitive coupling won't work
 
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