Oki MB760 Service Manual page 128

[F100_2] HDD format error (HDD encryption key data damaged - both boards)
Classification
Other service call
Check item
Encryption key status
Take appropriate countermeasures shown in the table below according to the messages displayed
in "SRAM Key Status" and "FROM Key Status".
Remarks:
If the error is not cleared, reinstallation of the system firmware / system software and application
is needed. ([4]+[9] → Power-ON)
SRAM Key
Status
*
AccessFailed
KeyNull/
KeyBroken
* AccessFailed, KeyNull or KeyBroken
45641001TH Rev.1
HDD format error: Encryption key data of both the SYS board and the
SRAM board for the SYS board are damaged.
Check the displayed message. ([3] + [C] + [POWER] → 5. Key Backup
Restore)
FROM Key
Status
AccessFailed Replace the SYS board.
 P. 6-18 "6.2.4 Precautions and Procedures when replacing the SYS
board" (all steps)
<With USB backup data: All key data recovery>
1. Recover all the data on the SRAM board.
[5] + [9] + [POWER] → 2. Restore SRAM Data from USB (For
details, see "9.1.4 Cloning procedure [B]Restore procedure")
2. Recover the encryption key/license on the SYS board.
Follow the procedures below noted in "6.2.4 Precautions and
Procedures when replacing the SYS board".
[C] Restore ADI key (only when ADI-HDD is installed)
[D] Restore encryption key
[E] Restore license
* Replace the SYS board.
 P. 6-22 "6.2.5 Precautions and procedure when replacing the
SRAM board (for the SYS board)" (for the SYS board, all steps)
KeyNull/ <No USB backup data>
KeyBroken 1. Reinstall the system software.
 P. 8-4 "8.2 Firmware Updating with USB Device"
<With USB backup data: All key data recovery>
1. Recover all the data on the SRAM board.
[5] + [9] + [POWER] → 2. Restore SRAM Data from USB (For
details, see "9.1.4 Cloning procedure [B]Restore procedure")
2. Recover the encryption key/license on the SYS board.
Follow the procedures below noted in "6.2.4 Precautions and
Procedures when replacing the SYS board".
[C] Restore ADI key (only when ADI-HDD is installed)
[D] Restore encryption key
[E] Restore license
Oki Data CONFIDENTIAL
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