Oki MC770 - Page 154

45584901TH Rev.1
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Oki Data CONFIDENTIAL
[F520] Operating system start error
Classification Error item
Other service call The operating system fails to start.
Check item Measures
Setting 1. Reboot.
2.Ifithasstillnotrecovered,reinstallthesystemsoftware.
3.Ifitstillpersistsafterstep2,perform[3]+[C]+[POWER]
→
3,and
then reinstall the system software.
Notes:
Userdatawillbedeletedwhen[3]+[C]+[POWER]
→
3 is
performed.
[F521] Integrity check error
Classification Error item
Other service call The program data fails to be authenticated.
Check item Measures
Setting Restarttheequipment.
Iftheerrorisnotrecoveredafterrestartingtheequipment,reinstall
software following the procedure below.
1. Reinstall the system software and application program.

P. 6-11 "6.2.3 Precautions and procedures when replacing the
HDD"
[F550] Encryption partition error
Classification Error item
Other service call The encryption partition fails to be read and written.
Check item Measures
Setting • Recovertheencryptionkeywith[3]+[C]+[POWER]
→
5.
[F600] F/W update error
Classification Error item
Other service call The firmware fails to be updated.
Check item Measures
Setting 1.Perform[3]+[C]+[POWER]
→
[1]
→
[START] for "Clear Error Flag
in Software Installation".
2. Reinstall the firmware in error displayed on the F600 error screen.