Brother HL-2440 Service Manual page 154

15) Paper Size Setting (A4/Letter)
You can select the paper size setting (A4/Letter) of the machine body. Whenever you
switch this mode, the setting is changed over from the present one to other.
You can verify the setting change by LEDs when releasing the SW supporter.
When the Toner and Drum LEDs light for 1 second, the paper size is set to Letter. When
launched without LED lighting, the paper size is set to A4.
16) Printing for Maintenance
This is to print a list of all maintenance information including printer coverage
information. (There is not the development of each national language, and only
English.)
Fig. 5-2
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