Toshiba e-STUDIO556 Service Manual page 956

[C] When the update of Laser ROM / Engine ROM / PFC ROM failed / Scanner ROM / RADF ROM
failed (e-STUDIO556/656/756/856)
USB update failed
Failed twice or more?
YES
Clear [Update Error Flags].
Assist Mode :
Turn the power ON with [3] +
[CLEAR] + [ON/OFF]
Clear flags.
[1] - > [START]
Update download jig.
" 11.5.1 Laser ROM "
" 11.5.2 Engine ROM/PFC ROM "
" 11.5.3 Scanner ROM "
" 11.5.4 RADF ROM "
Update succeeded?
YES
Check ROM version.
"11.6 Confirmation of the
updated data "
Is ROM version correct?
YES
Update completed
e-STUDIO556/656/756/856/557/657/757/857
FIRMWARE UPDATING
NO
Update USB.
NO
Failed twice or more?
YES
Replace target board.
NO
Update USB.
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Check harness connection.
SYS board < -- > SYS board
NO