Brother HL-2250DN Service Manual page 139

(8) Appear the "Password" screen.
Type the "replace" in the box, and click the [OK] button
Close the "Password" screen.
(9) Select "Input information" from Menu.
(10) Appear the "Printer Information" screen.
(11) Select the applicable model name.
(12) Check the port (USB) that the printer is connected through.
(13) Select the "Clear SQ-Wave Detected Count".
(14) Click in the "ON" box.
(15) Click the [OK] button.
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