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Solving Power Supply Problems; Testing Power Supply - HP Xw9400 - Workstation - 16 GB RAM Reference Manual

Hp xw9400 workstation - service and technical reference guide.
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Solving power supply problems

Testing power supply

Before reseating or replacing the power supply, use the BIST feature to determine if the power supply
still works.
To test the power supply:
1.
Disconnect AC power to the workstation.
2.
Disconnect all internal power supply cables.
3.
Plug in AC power.
a.
If the green BIST LED on the rear of the workstation is lit and the fan is spinning, the power
supply is functional.
b.
If the green BIST LED is not lit or the fan is not spinning, replace the power supply.
Figure 6-1
Table 6-4
Power supply problems
Problem
Power supply shuts down
intermittently.
140 Chapter 6 System diagnostics and troubleshooting
BIST LED
Power supply fault.
Cause
Replace the power supply.
Solution
ENWW

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