Technical Explanation > Main Controller > Security Function (Encryption Key, Certificate and Protection of Password) > Works to be Done Before and After Introduction

CAUTION: Causes of backup failure

In the following cases, a message indicating that the backup has failed and its cause

are displayed. Take appropriate measures.

• No USB flash drive is connected.

• Two or more USB flash drives are connected.

• Not enough space on USB flash drive.

• The connected USB flash drive is read-only.

• No key.

CAUTION: Storing the USB flash drive

Advise users of the following.

• Store the USB flash drive under lock and key.

• Do not store the backup files of the TPM keys in a USB flash drive at a location to

which the general public has access, such as on a server.

NOTE: Name of the backup file of the TPM key

The serial number of the machine is automatically assigned to the name of the backup

file.

Technical Explanation > Main Controller > Security Function (Encryption Key, Certificate and Protection of Password) > Works to be Done Before and After Introduction

● Restoration of TPM key

The operation is almost the same as that of backup.

Differences:

When the restoration is completed, restart (turning OFF and then ON the Main Power Supply

Switch) is required.

1) Connect the USB flash drive containing the saved TPM key.

2) Execute Management Settings > Data Management > TPM Settings, and click [Restore

TPM Key].

3) Enter the password set at backup operation.

4) When the screen appears confirming the start of restoration, click [OK]. Restoration starts.

5) When the screen indicating the completion of restoration is displayed, click [OK], remove

the USB flash drive, and then turn OFF and then ON the Main Power Supply Switch.