45584901TH Rev.1
3-18 /
Oki Data CONFIDENTIAL
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
Fig. 3-6
(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 CU 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.