Read Sharp AR-M351U / AR-M451U (serv.man20) Service Manual online
AR-M351U/M451U, AR-M355U/M455U ROM VERSION-UP METHOD 12 - 4
Rebootable?
YES
NO
Writing by CN6 of the
controller PWB (C.)
Update completed
YES
NO
YES
Write with onboard
collective files (B.)
Update completed
NO
Result: OK ?
Result: OK ?
Remove the boot ROM and
replace it with a spare.
(If another ROM is NG, replace it, too.)
ROM trouble?
Replace the ROM and retry.
YES
NO
YES
NO
YES
NO
Rebootable?
Writing by CN6 of the
controller PWB (C.)
Update completed
Write with onboard
collective files (B.)
Update completed
Result: OK ?
Result: OK ?
Remove the ROM and
replace it with a spare.
ROM trouble?
Replace the ROM and retry.
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