Brother DCP-L8400CDN Service Manual page 514

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Windows Vista/Windows 7/Windows 8/Windows 8.1
(1) Check that the power cord of the machine is unplugged from the electrical outlet.
Disconnect the USB cable that connects the machine with your computer.
(2) Turn ON your computer.
(3) Double-click Setup.exe inside the Brother Maintenance USB Printer folder that was saved
in a temporary folder. The following screen appears. Click the [Next] button.
The following screen is displayed during installation.
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