Oki MB760 Service Manual page 143

SRAM Key
Status
KeyMismatch
* AccessFailed or KeyMismatch
[F109_6] key consistency error (administrator password error for aDI-HDD authentication)
Classification
Other service call
Check item
Encryption key status
confirmation
Take measures given in the following table according to the messages displayed in the SRAM
Key Status and FROM Key Status fields.
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
OK
KeyNull/
KeyBroken
45641001TH Rev.1
FROM Key
Status
KeyMismatch <The error occurs when the SYS board is replaced> Recover the
encryption key on the SYS board. (Transfer the license from SYS-
SRAM to SYS-FROM.)
 P. 6-18 "6.2.4 Precautions and Procedures when replacing the SYS
board"([C] Restore ADI key)
<The error occurs except when the SYS board is replaced>
Recover the encryption key on the SRAM board. (Transfer the license
from SYS-FROM to SYS-SRAM.)
 P. 6-22 "6.2.5 Precautions and procedure when replacing the
SRAM board (for the SYS board)"([G] Backup ADI key)
Key consistency error - Administrator password error for ADI- HDD
authentication.
Check the message displayed by [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 SRAM board (for the SYS board).
 P. 6-22 "6.2.5 Precautions and procedure when replacing the
SRAM board (for the SYS board)" (all steps)
KeyNull/ Recover the ADI key on the SYS board.
KeyBroken  P. 6-18 "6.2.4 Precautions and Procedures when replacing the SYS
board" ([C] Restore ADI key)
OK Recover the encryption key on the SRAM board.
 P. 6-22 "6.2.5 Precautions and procedure when replacing the
SRAM board (for the SYS board)" ([G] Backup ADI key)
Oki Data CONFIDENTIAL
Measure
Content
Measures
Measure
5-60 /