HP xw9300 Service And Technical Reference Manual page 145

Table 5-24 Power Supply Problems (continued)
Problem
Power LED flashes RED once
every two seconds.
Cause
Power failure (power supply
is overloaded).
Solution
1. Check if a device is causing the problem by
removing ALL attached devices. Power on the
system. If the system enters the POST,
then power off and replace one device at a time
and repeat this procedure until failure occurs.
Replace the device causing the failure. Continue
adding devices one at a time to ensure all
devices are functioning properly.
2. Check the power supply functionality.
a. Disconnect the AC power.
b. Remove all internal power supply cables
from the system board.
c. Plug in the AC power.
• If the power supply fan spins and the
BIST LED lights, the power supply is
functional, so replace the system board.
• If the power supply fan does not spin or
the BIST LED does not light, replace the
power supply.
Troubleshooting Scenarios and Solutions 145