DX-C310, DX-C311, DX-C400, DX-C401 (serv.man90). CORRECTION OF DSK INSTALLATION - Sharp Copying Equipment Technical Bulletin (repair manual). Page 2

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MX-C401  MX-FR12U/FR13U (DATA SECURITY KIT)  7 – 3
3)
Turn ON the power switch on the operation panel.
F. DSK firmware installation
(1)
Entering the boot mode
1)
When the power is turned ON, the main program error is dis-
played.
2)
The above error message is displayed for 10 sec. Then the fol-
lowing message is displayed.
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.
* 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.
(2)-1. Key functions and operations in the boot mode
• 8.5 Inch LCD model
• 4.3 Inch LCD model
(2)-2. Functions in the boot mode
The following two functions are available in the boot mode.
(2)-3. 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
Key name in the 
normal mode
Key name in the 
boot mode
Function
Start key 
(Monochrome)
[OK] key
Performs the selected item or 
function.
Home key
[MENU] key
Selects a menu.
Clear key
[BACK] key
Selects a menu. 
(Serves as a cancel key in the 
execution check screen.)
Job status key
[UP] key
Selects an item.
System setting 
key
[DOWN] key
Selects an item.
1
Main Program Error!!
Emergency Prog Init
Please wait
Version Check
IcM:UNUSUAL
JOB STATUS
IMAGE SEND
HOME
PRINT
READY
DATA
DATA
LINE
SYSTEM
SETTINGS
LOGOUT
DOWN key
UP key
BACK key
MENU key
OK key
Key name in the 
normal mode
Key name in the 
boot mode
Function
Start key 
(Monochrome)
[OK] key
Performs the selected item or 
function.
Home key
[MENU] key
Selects a menu.
Clear key
[BACK] key
Selects a menu. 
(Serves as a cancel key in the 
execution check screen.)
Job status key
[UP] key
Selects an item. 
System setting 
key
[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.
LOGOUT
COPY
PRINT
OK
BACK
JOB STATUS
SYSTEM
SETTINGS
IMAGE SEND
READY
DATA
DATA
LINE
DOWN key
BACK key
UP key
MENU key
OK key
Version Check
IcM:UNUSUAL
Firm Update
From USB Memory
MENU key
BACK key
MENU key
BACK key
Firm Update
From USB Memory
Firm Update
> 0100P200.sfu
: Apr. 20 2009
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