Agilent Technologies Infiniium 80000 Series Service Manual page 79

Chapter 5: Troubleshooting
Power Supply Trouble Isolation
These trouble isolation instructions help isolate the problem to the assembly level when the
power system is not operating. Because of advanced power system protection features, the
problem may not be with the supply itself, and therefore you will need to work through the
procedure systematically to determine the source of the fault.
Check the power supply voltages from the power supply. See Figure 5-6 for the location
1
of these test points. Table 5-7 on page 78 shows the allowable range of power supply
voltages.
Figure 5-6
Power Supply Voltage Test Locations
Table 5-7 Power Supply Voltage Limits
Supply Voltage Specification
+12.6 V ± 0.1 V
-12.6 V ± 0.1 V
-5.3 V ± 0.05 V
-5.1 V ± 0.05 V
-6.1 V ± 0.05 V
+5.1 V ± 0.05 V
+3.35 V ± 0.03 V
78
Limits
+12.5 V to +12.7 V
-12.5 V to -12.7 V
-5.25 V to -5.35 V
-5.05 V to -5.15 V
-6.05 V to -6.15 V
+5.05 V to + 5.15 V
+3.32 V to +3.38 V