Canon imageRUNNER ADVANCE C350 series Service Manual page 79

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Technical Explanation > Main Controller > Security > Security features(encryption key and certificate, password protection)
● Before / after introduction
The setting neeeds to be specified in Settings / Registration mode ("TPM setting" is set OFF
at the time of shipment from the factory)
1. Enable the feature
2. Backup the TPM key
3. Restore the TPM key
4. Disable the feature
Basically the user should perform this work
Caution:
To set "ON" for TPM setting, be sure to instruct the following points to the user.
• Be sure to backup the TPM key immediately after selecting "ON"
• Keep the password at the time of backup
• Be sure not to lose the USB memory that has saved the backup file of TPM key.
In the case of replacing the TPM PCB due to failure, it is necessary to restore the TPM
key after replacement.
Unless retoration is implemented, security information (password, certificate and
encryption key) cannot be used.
If restore work could not be performed due to lost of USB memory, etc., it is necessary
to first execute [Initialize All Data / Settings] to enable the TPM feature again. This is
due to security issue to keep the setup/register data unchanged.
2 Technical Explanation > Main Controller > Security > Security features(encryption key and certificate, password protection)
1. Enable the feature
Caution:
Setting of "system management encryption number"
Recommend the user (administrator) to set up the system management encryption
number in advance.
Backup of TPM key is performed after selecting "ON" for TPM settings, however,
backup is available only once. Therefore, it is efficient to set the system management
encryption number as a mean to avoid incidents, such as when backup file is obtained
by anyone other than the administrator, etc.
1) Select the following: Management Settings > Data Management > TPM Setting: and select
"ON" for TPM setting.
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