Toshiba e-STUDIO 2555C Service Manual page 925

[F] Clear SRAM update Error flags
(1) Turn the power ON while pressing [3] and the [CLEAR] button simultaneously.
(2) Enter the password, and then press the [OK] button. (If the password is not set for Service, press
the [ENTER] button without entering anything.)
(3) After "Firmware Assist Mode" is displayed on the LCD, check that "1: Clear Error Flag in Software
Installation." is marked and press the [START] button.
If not, key in [1] and then press the [START] button.
(4) When "Operation Complete" is displayed on the LCD, clearing the flag is completed.
(5) Turn the power OFF.
[G] Backup ADI key
If the ADI-HDD is installed, follow the steps below. To confirm the type of device, start up the equipment
in the 4C mode.
(1) Turn the power ON while pressing [3] and the [CLEAR] button simultaneously.
(2) Enter the password, and then press the [OK] button. (If the password is not set for Service, press
the [OK] button without entering anything.)
(3) Key in [5] to select "5. Key Backup Restore", and then press the [START] button.
(4) Key in [6] to select "6. ADIKey FROM to SRAM", and then press the [START] button.
(5) Wait until the backup of the ADI key is completed. "Operation Complete" is displayed.
(6) Restart the equipment after the backup is completed.
If you want to perform the backup of the license, do not restart the equipment but perform from
(4) in "[H] Backup encryption key".
[H] Backup encryption key
(1) Turn the power ON while pressing [3] and the [CLEAR] button simultaneously.
(2) Enter the password, and then press the [OK] button. (If the password is not set for Service, press
the [ENTER] button without entering anything.)
(3) Key in [5] to select "5. Key Backup Restore", and then press the [START] button.
(4) Key in [2] to select "2. Key FROM to SRAM", and then press the [START] button.
(5) Wait until the backup of the encryption key is completed. "Operation Complete" is displayed.
(6) Restart the equipment after the backup is completed. If you want to perform the backup of the
license, do not restart the equipment but perform from (4) in "[I] Backup license".
(7) Turn the power OFF.
[I] Backup license
Notes:
If "3. License SRAM to FROM" is performed by mistake, carry out the following procedure.
 P. 9-40 "[ 1 ] Re-registration when the board is replaced"
(1) Turn the power ON while pressing [3] and the [CLEAR] button simultaneously.
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REPLACEMENT OF PC BOARDS/HDD
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