Pro 7900 and 9900 Field Repair Guide 10/6/10
RTC & USB ID Adjustment Printer Component, Software Item, LCD Display, Printer Button Page 344.
RTC & USB ID Adjustment
Note: The RTC & USB ID sets the Printer’s System Clock and/or resets the USB ID.
1. From the Servprog.exe for the 7900 and 9900, select Adjustments (Individual).
Click on Adjustments (Individual)