Turning Off The Power During The Version-Up Procedure; Version-Up Procedure Flowchart - Sharp MX-M550U Service Manual

12) "CN5" and the selection menu of slot numbers is displayed.
Select "CN6" to which the target ROM is inserted to with Up/
Down keys, and press OK key.
13) The LED flashes and the display is changed in the following
sequence.
When "Result: OK" is displayed in a few minutes, press Up/
Down keys to check that there is no display of "Result: NG.".
CN Update ***-> CN5
Writing Data
CN Update ***-> CN5
Result : OK
14) Turn off the machine.
15) Remove the ROM from the empty slot CN6 for ROM copy on
the MFP control PWB ROM.
16) Install the ROM with the revised version to the PWB.
17) Turn on the machine, and use SIM 22-5 to check that the ROM
version is normally upgraded.
* Precautions on transferring a ROM program data with the
file transfer tool File2PRN
For successful transferring a ROM program data with the file
transfer tool File2PRN, the following conditions should be
met:
• When transferring a ROM program data with the file trans-
fer tool File2PRN, the destination machine must be con-
figured as a printer.
• The PC must have an appropriate printer driver installed
and configured with an I/F port to use.
D. Countermeasures against "Result: NG"
Factors of "Result: NG"
The following cases may be factors of "Result: NG."
* The DIP switch for write protect is not set properly.
* The FAX cable is not connected. (NG for FAX)
* ROM defect (Very rare case)
5. Turning OFF the power during the
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 per-
form the version-up procedure again.
Replace with the spare PCU, the controller boot, the scanner con-
trol PWB ROM, and perform procedure "C. Version-up procedure
3" for the replaced ROM again to write data into it.

6. Version-up procedure flowchart

Set again.
MX-M700N ROM VERSION-UP 10 – 5
version-up procedure
Write the on-board
files collectively. (4.)
Result: OK?
NO
YES
Setting mistake? (6.)
NO
YES
NG is BOOT?
NO
YES
NG is SCAN FAX
PCU,MAIN?
NO
YES
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