168                                                                      Keysight FieldFox Handheld Analyzers Service Guide
Repair and Replacement Procedures
Processor Upgrade Procedures
7-
14.Place the RTC board onto the System board shield and secure with the two 
screws. Torque to 9 in-lbs.
15.Remove the System board to FPIB cable (W14) from the old A5 System 
board and install it on the new board.
16.Reinstall the I/O side panel. Refer to “Replacing the I/O Side Panel, Doors, 
and Gasket” on page 120.
17.Perform the steps under “Final Assembly Procedure” on page 164.
18.Change the nameplate, remove old nameplate. Refer to Figure 7-13 on 
page 124. Choose the appropriate model number nameplate overlay for 
your analyzer, remove the protective baking to expose the adhesive, and 
adhere it in the location shown. Refer to Figure 7-41 for the new 
nameplate with red Keysight logo. 
19.Proceed “Post-Repair Procedures” on page 165. Download and install the 
latest Firmware for the CPU2 from Fieldfox Series Firmware Updates.
Figure 7-40  Installing the nut ring 
Figure 7-41  New Keysight Nameplate