Keysight Technologies N9040B UXA Signal Analyzer Service Guide 455
Assembly Replacement Procedures
Motherboards
Motherboards
There are three motherboards in the UXA. The front motherboard (A8 Front
Motherboard), rear motherboard (A7 Rear Motherboard), and bottom
motherboard (A24 Motherboard Interconnect board). Figure 15-102 shows the
locations of the motherboards with most of the other assemblies removed.
Figure 15-102 Motherboard Locations
Front Motherboard (A8 Front Motherboard)
Removal
1. Remove the instrument outer case. Refer to the “Instrument Outer Case”
removal procedure.
2. Remove the top brace and card cage brace. Refer to the “Top Brace and
Card Cage Brace” removal procedure.
3. Remove the front frame. Refer to the “Front Frame Assembly” removal
procedure.
4. Remove all of the card cage assemblies. Refer to the “Card Cage Boards”
procedures.
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