Toshiba e-STUDIO5540C Service Manual page 197

[F109_2] Key consistency error (Signature Check public key damage)
Classification
Other service call
Check Item
Setting
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
Key consistency error - Public key data used for Integrity Check
are damaged.
Reboot the equipment.
If it cannot be recovered, reinstall the software in the following
procedure.
(1) Install the OS data.
(2) Reinstall the master data and application program.
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