Assist Mode (3C); General Description; Operating Procedure; Firmware Assist Mode - Toshiba e-STUDIO477S Service Manual

3.9

Assist Mode (3C)

3.9.1

General description

This is a mode to operate the partitions of HDD, initialize the SRAM data, erase the HDD/SRAM data,
back up/restore the encryption key and licences.
Functions:
• Clearing update error flag (Clear Error Flag in Software Installation)
• Formatting data storage partition (Format Root Partition)
• Creating HDD partition (Format HDD)
• Formatting SRAM data (Clear SRAM)
• Backing up/restoring encryption key and license (Key Backup Restore)
• Erasing HDD securely (Erase HDD Securely)
• Erasing SRAM securely (Erase SRAM Securely)
• Clearing service tech password (Clear Service Tech)
3.9.2

Operating Procedure

(1) Turn ON the power while [3] button and [CLEAR] button are pressed simultaneously.
The following screen is displayed.

Firmware Assist Mode

Select number(1-8) and press START key
1. Clear Error Flag in Software Installation
2. Format Root Partition
3. Format HDD
4. Clear SRAM
5. Key Backup Restore
6. Erase HDD Securely
7. Erase SRAM Securely
8. Clear Service Tech Password
(2) Select the item with the digital keys and press the [START] button.
3.9.3 Functions
[A] Clearing update error flag (Clear Error Flag in Software Installation)
Even if the firmware downloading has been completed normally, the Recovery Mode may accidentally
start up and an F600 error occurs when the power is turned ON again. In this case, clear the Update
Error flags used in the download process with this function. (Normally, the flags are automatically
cleared in the download process.)
Also in the case the Recovery Mode accidentally starts up after the replacement of SRAM on the SYS
board, the flags are cleared with this function.
[B] Formatting data storage partition (Format Root Partition)
When a defect occurs on the UI data, etc. which are stored in the HDD, the partition with the stored UI
data, etc. is formatted with this function.
Do not use this function since it is not normally necessary. HDD data must be installed after performing
this function.
e-STUDIO477S/527S/477SL
SELF-DIAGNOSTIC MODE
Fig. 3-6
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