Turning Off The Power During The Version-Up Procedure; Version-Up Procedure Flowchart - Sharp AR-M550N Service Manual

5. Turning OFF the power during the
version-up procedure
If the power is turned OFF during the version-up procedure, normal
writing of data cannot be assured even though the machine can be
booted again.
In such a case, use the spare PCU PWB ROM, the MFP control PWB
ROM (boot, program), and the scanner control PWB ROM each of
which includes the program to be operated, and perform the version-
up procedure again.
Replace with the spare PCU, the controller boot, the scanner control
PWB ROM, and perform procedure "4." for the replaced ROM again to
write data into it.
NO
Remove the BOOT Flash ROM and
replace it with a spare one. (If there is
any NG Flash ROM, replace it, too.)
Write with an empty
socket. (5.)
Result: OK?
NO
If the Flash ROM itself is
defective, replace it with a
new one and try again.
Booted normally?
YES
Update completed
YES
Update completed
AR-M550/M620/M700 ROM VERSION-UP METHOD 10 - 5

6. Version-up procedure flowchart

Write the on-board
files collectively. (4.)
Set again.
Result: OK?
NO
YES
Setting mistake? (6.)
NO
YES
NG is BOOT?
NO
YES
NG is SCAN FAX?
NO
YES
Write the on-board files
collectively. (4.)
Result: OK?
NO
YES
Update completed