HP Xw4600 - Workstation - 2 GB RAM Technical Reference Manual page 125

To test the power supply:
1. Unplug the AC power.
2. Disconnect all internal power supply cables from the system board.
3. Plug in AC power.
●
If the green BIST LED (illustrated below) on the rear of the workstation is illuminated and the
fan is spinning, the power supply is functional.
● If the green BIST LED is not illuminated or the fan is not spinning, replace the power supply.
Figure 6-1 Testing power supply with BIST LED
Table 6-3 Power supply problems
Problem
Power supply shuts down
intermittently.
ENWW
Cause
Power supply fault.
Solution
Replace the power supply.
Customer Self Help 115