Toshiba e-STUDIO5540C Service Manual page 196

Check Item
Setting
[F109_0] Key consistency error (Consistency check operation error)
Classification
Other service call
Check Item
Setting
SRAM board (for SYS board)
SYS board
Replace parts
SRAM board
SYS board
[F109_1] Key consistency error (SRAM encryption AES key data damage)
Classification
Other service call
Check Item
Setting
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Perform [3]+[C]+[POWER]-> [3.Format HDD], and then install
the system software by performing [4]+[9]+[POWER]->
[4.System Software(HD data)].
Notes:
The following items will be deleted by performing
[3]+[C]+[POWER]-> [3.Format HDD].
• Message Log
• Job Log
• Spool Data (Print, Email reception)
• Template
Key consistency error - Key consistency check on each key
data fails.
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.
If the error is not cleared after the software reinstallation,
replace the SRAM board.  P. 9-35"9.2.6 Precautions and
Procedures when replacing SRAM board (for SYS board)"
If the error is not cleared after this (see above), replace the
SYS board.  P. 9-30"9.2.4 Precautions and Procedures
when replacing the SYS board"
Key consistency error - AES key data used for SRAM
encryption 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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Measure
Contents
Measure
Remarks
Contents
Measure
e-STUDIO5540C/6540C/6550C/5560C/6560C/6570C
ERROR CODE and TROUBLESHOOTING
8