Data To Be Handled By Sram; The Kind Of Data To Handle - Canon imageRUNNER ADVANCE C5255 Series Service Manual

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Parts Replacement and Cleaning > Data to be handled by SRAM(with HDD Encryption Board > The kind of data to handle > Handling SRAM data of this machine
Data to be handled by SRAM(with HDD Encryption
Board

The kind of data to handle

Data to operate this machine is largely divided into 2 categories.
System software Common data among the same model
Data in SRAM and HDD Factory settings value for the target machine and the values in Address
on the boards Book and Settings/Registration, etc. entered by the user.
Upgrading and installation is used as the terms to handle the system software.
Backup and restoration is used as the terms to handle data in SRAM and HDD on the boards.
Version-up
System software
Be sure to use the latest possible backup data for the SRAM data of each board.
If restoring the SRAM data backed up long time ago, image failure, etc., may occur due to
mismatch between the backup data and the parameter for host machine adjustment changed
after backup.
■ Handling SRAM data of this machine
With the normal service, the contents of SRAM of the Main Controller PCB 2 can be backed
up to HDD in service mode and restored after replacing the board.
If there is an HDD Encryption Board, the encryption key of the HDD Encryption Board
recorded on SRAM is lost when replacing the Main Controller PCB 2, and the contents of
HDD cannot to be read. Therefore, restoration cannot be done although backup is performed.
When replacing the Main Controller PCB 2, user data needs to be reentered in the same way
as when replacing the HDD with a new one.
4 Parts Replacement and Cleaning > Data to be handled by SRAM(with HDD Encryption Board > The kind of data to handle > Handling SRAM data of this machine
T-4-45
Backup Restore
Settings/Registration
Service Mode
F-4-407
Part to be Description
replaced
Main SRAM of the Main Controller PCB
Controller 2 2 includes user data and MEAP-
related data.
If there are any files backed up
from RUI by the user, restore them
after recovery.
Explain the user that the
reinstallation of everything related
to MEAP is necessary.
Reference: If Meapback.bin
is saved using SST, it can be
restored after replacing the Main
Controller PCB 2. This makes the
reinstallation of everything related
to MEAP unnecessary.
New HDD Install the system software on the
new HDD after formatting it by
SST.
If there are any files backed up
from RUI by the user, restore them
after recovery.
Explain the user that the
reinstallation of everything related
to MEAP is necessary.
Reference: If Meapback.bin
is saved using SST, it can be
restored after replacing the Main
Controller PCB 2. This makes the
reinstallation of everything related
to MEAP unnecessary.
System To upgrade the system version,
installation the Assist Mode of SST is
when the recommended.
HDD is
properly
working.
Backup Enter service mode to make a
of Reader backup of SRAM data into the
Controller HDD.
PCB
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Procedure When TPM is
enabled (ON)
Hold down 2 and 8 to start the After the
machine, and then use SST to system is
clear the encryption key of the HDD properly
Encryption Board. installed,
Use SST or a USB memory device enable TPM
to Format ALL and install the to execute a
system. backup of TPM.
Hold down 2 and 8 to start the After the
machine, and then use SST or a system is
USB memory device to Format ALL properly
and install the system. installed,
enable TPM
to execute a
backup of TPM.
Enter service mode and select the No additional
following: work
COPIER > FUNCTION > SYSTEM >
DOWNLOAD > OK
Use SST to install the system
software in Assist mode.
Select the following to execute No additional
system backup: COPIER > work
FUNCTION > SYSTEM RSRAMBUP
Replace the Reader Controller PCB
Select the following to restore the
system: COPIER > FUNCTION >
SYSTEM RSRAMRES
4-205