The configuration page (called the "printer settings" page) on a Brother HL-2240 printer gives a lot of information about the machine, including total page count, recent errors, serial number, and the estimated amount of drum yield and toner yield left.
To print the printer settings page, press the Go button (the button with the green line on it) three times.
To print the printer settings page, press the Go button (the button with the green line on it) three times.