AR-C150 (serv.man12). ARC150 Firmware Upgrade Procedure - Sharp Copying Equipment FAQ (repair manual). Page 4

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3 . Flash ROM version up procedure
(Preliminary procedure)
1) Remove the right upper cabinet of the machine. (2 screws)
2) Remove the shield plate and the stopper shaft. (3 screws)
A. By using a computer and the ICU MAIN PWB,
the program data of Flash ROM is written from
the computer to the Flash FOM of the AR-C150
ICU MAIN PWB.
1) Check that the power of the machine is turned off. Install the Flash
ROM which is to be upgraded (copied) to the write socket of the
ICU MAIN PWB.
2) Connect the personal computer and the level converter.
3) Connect the serial I/F connector on the ICU-MAIN PWB with the
level converter.
4) Turn on the personal computer, and start the Windows.
5) Turn on the power of the machine.
6) Set the data communication speed of the computer.
– 1 – From Start 
 Setup 
 Program, select "Control panel."
– 2 – Click "System."
LED 1 
 
LED 2 
 
Write
socket
Read
socket
Level converter
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