Read Sharp MX-M350N / MX-M350U / MX-M450N / MX-M450U (serv.man7) Service Manual online
MX-M350/M450 N/U ROM VERSION-UP 12 - 5
YES
NO
YES
NO
YES
NO
Remove the BOOT Flash ROM and
replace it with a spare one. (If there is
any NG Flash ROM, replace it, too.)
replace it with a spare one. (If there is
any NG Flash ROM, replace it, too.)
Booted normally?
Write the on-board files
collectively. (4.)
Result: OK?
Result: OK?
Update completed
Update completed
Write with an empty
socket. (5.)
If the Flash ROM itself is
defective, replace it with a
new one and try again.
defective, replace it with a
new one and try again.
YES
NO
YES
NO
YES
NO
Booted normally?
Remove the Flash ROM
and replace it with a
spare.
and replace it with a
spare.
Write the on-board files
collectively. (4.)
collectively. (4.)
Result: OK?
Update completed
Write with the empty socket.
(6.)
Result: OK?
Update completed
If the Flash ROM itself is
defective, replace it with a
new one and try again.
defective, replace it with a
new one and try again.
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