MX-2640N, MX-2640NR, MX-2640FN, MX-3140N, MX-3140NR, MX-3140FN, MX-3640N, MX-3640NR, MX-3640FN (serv.man37). Installation Manual Revised June 2014. - Sharp Copying Equipment Service Manual (repair manual). Page 102

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  MX-FR41U (DATA SECURITY KIT)  20 – 2
D. Turn ON the power of the main unit
1)
Connect the power plug of the machine to the power outlet,
and turn ON the main power switch and the operation panel
power switch.
E. Firmware update procedures
(1) Entering the boot mode
1)
After power on, light the backlight and no message on the
screen.
2)
Few seconds later, the screen displays the following message.
3)
The machine enters the boot mode which indicates that there
is an error in the main program.
(2) Operations in the boot mode
When the machine is booted in the boot mode, the firmware ver-
sion check, the firmware install, and the version-up operation can
be performed.
NOTE: In the boot mode, the following keys are used for operation.
Note that the functions of the keys in the boot mode differ
from those in the normal mode.
a. Key functions and operations in the boot mode
b. Functions in the boot mode
The following two functions are available in the boot mode.
c. Selection of functions in the boot mode
There are two functions available in the boot mode. These modes
can be selected by pressing [MENU] key and [BACK] key.
(3) Firmware install and version-up procedures in the 
boot mode
1)
Boot the machine in the boot mode. When the Version Check
display is indicated, press [MENU] key, and the machine
enters the Firm Update mode.
2)
Insert the USB memory which includes the update firmware file
(SFU file) into the USB port of the machine, and press [OK]
key.
SFU file display
3)
Select the firmware file (SFU file) of the target.
Use [UP] key and [DOWN] key to select the target file.
When [OK] key is pressed with the directory name displayed,
the control can enter the lower level directory. (However, one-
step lower level)
When [BACK] key is pressed in the lower level directory, the
control can return to the upper level directory.
4)
Press [OK] key.
The selected firmware file (SFU) is read. (It takes about 1 min-
ute.)
Display of reading file data
Key name
Functions in the CN update mode
[OK] key
Executes the selected function or item.
[MENU] key
Selects a menu.
[BACK] key
Selects a menu.
(Serves as a cancel key in the execution check 
screen.)
[UP] key
Selects an item.
[DOWN] key
Selects an item.
Function
Content
Firmware 
version check 
function
Displays the firmware version of the ICU PWB, the 
SCU PWB, the PCU PWB, and the FAX PWB.
Firmware install 
(update) function
Installs (revises) the firmware by transmitting data 
from the PC which is connected to the ICU PWB, the 
SCU PWB, the PCU PWB, the FAX PWB, and other 
options with the USB memory or the USB cable.
 
-AIN
 
 
5PDATE
 
 
6ERSION
 
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Version Check
IcM:UNUSUAL
Firm Update
    From USB Memory
 
[MENU] key
[BACK] key
[MENU] key
[BACK] key
 
&IRM
 
 
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;50=
;"!#+=
 
&IRM
 
 
&IRM
 
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: '13/Oct
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