Brother MFC5490CN Service Manual page 360

After replacing the main PCB with the one used for any other machine or when
changing programs
Unplug the power cord from the electrical outlet and make sure that the machine is
connected with your PC using a USB cable.
While holding down the 5 key, plug the power cord into an electrical outlet.
Then press the Mono Start key (Black Start key).
The black and white pattern appears on the LCD as shown on the previous page. The
machine is ready to receive programs or data for firmware installation from the connected
PC.
< To load programs from the PC >
(1) On your PC, run "filedg32.exe."
The Filedrgs window will appear as shown below.
(2) Drag and drop the firmware (e.g., lz0023_a.pmu) onto the Brother Maintenance USB
Printer driver icon in the Filedrgs window shown above.
Note: To use a firmware file, extract it beforehand by double-clicking. It is a self-
extracting file having the extension .exe.
After approx. 2 to 5 minutes, the loading operation is complete and the machine
automatically reboots and returns to the standby state.
(3) On the machine, display the version of the firmware installed on the LCD by
simultaneously pressing the * and # keys to check it.
Sample version number shown on the LCD: A0307252244:CF30
(4) If the displayed version number is identical with the firmware version you installed,
the loading operation has been successfully finished.
App. 2-7
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