Checking the Serial Number of the Machine
You can check the serial number of the machine using Web Image Monitor.
Launch the Web browser.
Enter "http://(IP address of the machine or host name)/" on the address bar of the Web browser, and then press the Enter key.
Click [Device Info] on the [Status/Information] menu.

In the "System" category, check the serial number (an alphanumeric character string) next to "Machine ID".
Click [Back].