Canon imageRUNNER ADVANCE C350 series, Руководство по обслуживанию, Страница: 487 / 1173

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Disassembly/Assembly > Data to be handled by SRAM(with HDD Encryption Board > The kind of data to handle > Handling SRAM data of this machine
Disassembly/Assembly > 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
on the boards
Factory settings value for the target machine and the values in Address
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.
System software
Settings/Registration
Service Mode
Backup Restore Version-up
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 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, and the contents of HDD
cannot to be read. Therefore, restoration cannot be done although backup is performed.
When replacing the Main Controller PCB, user data needs to be reentered in the same way
as when replacing the HDD with a new one.
T-4-87
F-4-475
Part to be
replaced
Description Procedure When TPM is
enabled (ON)
Main
Controller
SRAM of the Main Controller PCB
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.
1. Use SST to backup the "sramimg.
bin."
2. Replace the Main Controller PCB.
3. Use SST to restore the "sramimg.
bin."
After the
system is
properly
installed,
enable TPM
to execute a
backup of TPM.
Reference: If Meapback.bin
is saved using SST, it can be
restored after replacing the Main
Controller PCB. 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.
1. Hold down 2 and 8 to start the
machine.
2. Use SST to Format ALL.
3. Install the system.
After the
system is
properly
installed,
enable TPM
to execute a
backup of TPM.
Reference: If Meapback.bin
is saved using SST, it can be
restored after replacing the Main
Controller PCB. This makes the
reinstallation of everything related
to MEAP unnecessary.
System
installation
when the
HDD is
properly
working.
To upgrade the system version,
the Assist Mode of SST is
recommended.
1. Enter service mode and select the
following: COPIER > FUNCTION
> SYSTEM > DOWNLOAD > OK
2. Use SST to install the system
software in Assist mode.
No additional
work
Backup
of DC
Controller
PCB
Enter service mode to make a
backup of SRAM data into the
HDD.
1. Select the following to execute
system backup: COPIER
> FUNCTION > SYSTEM
DSRAMBUP
2. Replace the DC Controller PCB.
3. Select the following to restore the
system: COPIER > FUNCTION >
SYSTEM DSRAMRES.
No additional
work