Agilent Technologies Infiniium 90000 A Service Manual page 69

Figure 4-15
Fan opening to look through to see the second and third groups of over-voltage indicator LEDs.
The following picture (Figure 4-16) shows the fan opening with the fan removed. This is done
to shows where these LEDs are located on the acquisition assemblies and is not required in
your actual diagnosis. You will be able to see the LEDs through the fan and it, therefore, does
not need to be removed.
Chapter 4: Troubleshooting
The second and third
groups of over-voltage
LEDs are located
behind this fan
Over-Voltage Fault
69