HOW TO DELETE FAX MEMORY IN BROTHER MFC 640 CW

SOURCE: how do i errase memory from my brother fax machine

Putting the machine in Maintenance Mode will allow clearing all memory, but will also allow you to enter things which can totally mess up your machine, so be careful here...
Entering maintenance mode, method 1:
From normal ready state, enter:
Menu
* (Star on phone keypad)
2
8
6
4
[You MUST touch all those buttons within 2 seconds, or the machine will just leave you in the menus somewhere. If you slow down to let it finish beeping, you'll miss it. Press Stop and try it again, faster. Look for the word MAINTENANCE on the display, and/or all light flashing together.]
Some Brother models dont use method 1; they require Method 2:
Menu
Black Start
Up-arrow
Up-arrow
Up-arrow
Up-arrow
Success is indicated the same way as in Method 1. Try either method to see what works.
Once in Maintenance Mode, you have two choices. For either one, just enter the two-digit number. You don't touch Start or Enter, just the two digits.
91 Clears all memory except your phone directory and a few important things like that.
01 Clears everything, leaving your machine just like when you first unboxed it.
99 Takes the machine out of Maintenance Mode. It will take a minute to go through its entire startup routine, as if you'd just plugged it in.

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