Canon imageRUNNER ADVANCE C350 series Service Manual page 82

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Technical Explanation > Main Controller > Security > Security features(encryption key and certificate, password protection)
3. Restore of TPM Key
Procedure is about the same as the backup work.
Difference between restore work and backup work:
Rebooting is necessary (turn OFF and then ON the main power) after completion of restore
work.
1) Connect the USB memory that saves TPM key.
2) Select the following: Management setting > Data management > TPM setting; and click
[Restore TPM key].
3) Enter the password that has been specified at backup work.
4) Once the screen to confirm restore start is shown, click [OK] to start restore.
5) Once the restore completion screen is shown, click [OK] and remove the USB memory, and
turn OFF and then ON the main power switch.
2 Technical Explanation > Main Controller > Security > Security features(encryption key and certificate, password protection)
Caution:
Cause of restore failure
In the case of the following, a message is shown indicating restore failure and its cause.
Be sure to perform appropriate remedy.
• USB memory is not connected.
• 2 or more USB memories are connected.
• Connected USB memory is with security feature.
• There is no TPM key in the USB memory.
• The TPM key in the USB memory is not appropriate for the target machine.
• Mismatched entry password
• [Initialize All Data /Setting] is executed after obtaining backup of TPM key.
• The Flash is faulty.
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