Keysight N9038A - Page 50

50 Keysight N9038A MXE Service Guide
Boot Up and Initialization
Potential Problems During Boot Process
5. Referring to Figure 2-7, verify that the Fan_P Failure LED on the A7
Midplane board is off.
Is the Fan_P LED off?
If yes:
Measure the voltage level at Test Point 522 on the A7
Midplane board.
Is the Test Point 522 voltage between +7 and +15 VDC?
If yes:
Proceed to step 6.
If not:
Replace the A6 Power Supply
assembly.
If not:
Replace the A6 Power Supply assembly.
Figure 2-7 A7 Midplane Board - Fan_P Failure LED / Test Point 522
Before replacing the power supply, verify the midplane and motherboard interconnects are
mechanically secure.