52 Keysight Technologies N9040B UXA Signal Analyzer Service Guide
Boot Up and Initialization Troubleshooting
Potential Problems During Boot Process
Figure 2-3 A7 Midplane Board +5.1V_STBY LED
Most DC power supplies come from the A6 Power Supply assembly. However, the most
convenient measurement location for most of the DC supplies is the A7 Midplane. Many power
supply LED's are accessible once the instrument cover has been removed.