Brother DCP-L8400CDN Service Manual page 372

1.1.2 Installing the firmware
■
Installing the firmware using USB flash memory
Memo:
- Installing the firmware using a USB flash memory is not possible in deep sleep mode.
Open and close the front cover, etc. to quit the deep sleep mode before installing the
firmware.
- Install the Sub firmware, Panel firmware, Main firmware, and High-voltage firmware in this
order.
- Never disconnect the AC cord of the machine or computer, or the USB flash memory
during installing.
- If installing the firmware using a USB flash memory fails and an error message is
displayed on the LCD or no characters are displayed on the LCD, install the firmware
using a computer referring to
<Operating procedure>
(1) Save the program files (such as LZXXXX_$.djf) which are necessary for installing the
firmware to the USB flash memory.
(2) While the machine is in the ready state, connect the USB flash memory drive to the USB
direct interface on the front of the machine.
(3) When the machine detects the USB flash memory, the program names are displayed on
the LCD. Press the
(4) Press the program name that you want to install on the LCD to start installing.
(5) When installation is completed, the machine automatically restarts.
(6) Repeat steps (3) to (4) to install necessary firmware.
(7) When all firmware installation has been completed, remove the USB flash memory from
the USB direct interface.
"■ Installing the firmware using computer" in this
or key to display the program name that you want to install.
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chapter.
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