Oki MC770 - Page 148

45584901TH Rev.1
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Oki Data CONFIDENTIAL
[F109_5] Key consistency error (encryption key for ADI-HDD is damaged)
Classification Contents
Other service call Keyconsistencyerror-EncryptionkeyforADI-HDDisdamaged.
Check item Measures
Encryption key status
confirmation
Checkthemessagedisplayedby[3]+[C]+[POWER]
→
5.KeyBackup
Restore.
Take measures given in the following table according to the messages displayed in the SRAM
KeyStatusandFROMKeyStatuselds.
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
FROMKey
Status
Measure
* AccessFailed Replace the CU board.

P. 6-16 "6.2.4 Precautions and Procedures when replacing the CU
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"9.1.4Cloningprocedure[B]Restoreprocedure")
2. Recover the encryption key/license on the CU board.
Follow the procedures below noted in "6.2.4Precautions and
Procedures when replacing the CU board".
[D] Restore ADI key (only when ADI-HDD is installed)
[E] Restore encryption key
[F] Restore license
AccessFailed * Replace the SRAM board (for the CU board).

P. 6-20 "6.2.5 Precautions and procedure when replacing the
SRAM board (for the CU board)" (all steps)
OK KeyNull/
KeyBroken
Recover the ADI key on the CU board.

P. 6-16 "6.2.4 Precautions and Procedures when replacing the CU
board" ([D]Restore ADI key)
KeyNull/
KeyBroken
OK Recover the encryption key on the SRAM board.

P. 6-20 "6.2.5 Precautions and procedure when replacing the
SRAM board (for the CU board)" ([G]Backup ADI key)
KeyNull/
KeyBroken
KeyNull/
KeyBroken
<No USB backup data>
1.CreatethepartitionintheHDD,andreinstallthesystemsoftware.

P. 6-11 "6.2.3 Precautions and procedures when replacing the
HDD"(Performstep3orlaterin“[E]Replace/FormatHDD”)
<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"9.1.4Cloningprocedure[B]Restoreprocedure")
2. Recover the encryption key/license on the CU board.
Follow the procedures below noted in "6.2.4Precautions and
Procedures when replacing the CU board".
[D] Restore ADI key (only when ADI-HDD is installed)
[E] Restore encryption key
[F] Restore license