Toshiba e-studio 2555c, Service Manual

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© 2012-2013 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
8 - 211
8.3.24 Other service call
[F100_0] HDD format error (Operation failure of key data)
[F100_1] HDD format error (HDD encryption key data damaged - one board)
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)

P. 11-5 "11.2 Firmware Updating with USB Device"
Classification Contents
Other service call
HDD format error: Operation of HDD key data fails.
Check item Measures
Setting Reboot the equipment.
If it cannot be recovered, reinstall the software in the following
procedure.
1. Install the system firmware.

P. 11-5 "11.2 Firmware Updating with USB Device"
Classification Contents
Other service call HDD format error: Encryption key data of either the SYS board
or the SRAM board for the SYS board are damaged.
Check item Measures
Encryption key status Check the displayed message. ([3] + [C] + [POWER]
→
5. Key
Backup Restore)
SRAM Key
Status
FROM Key
Status
Measure
OK AccessFailed Replace the SYS board.

P. 9-22 "9.2.4 Precautions and Procedures when replacing
the SYS board" (all steps)
OK KeyNull Recover the encryption key on the SYS board.

P. 9-22 "9.2.4 Precautions and Procedures when replacing
the SYS board" ([D]Restore encryption key)
KeyBroken
AccessFailed OK Replace the SRAM board (for the SYS board). (USB backup
data are not used)

P. 9-26 "9.2.5 Precautions and procedure when replacing
the SRAM board (for the SYS board)" (all steps)
KeyNull OK Recover the encryption key on the SRAM board.

P. 9-26 "9.2.5 Precautions and procedure when replacing
the SRAM board (for the SYS board)" ([H]Backup encryption
key)
KeyBroken