HP xw9400 User Manual

Problem Cause Possible Solution
4. Replace the processor fan.
5. Reseat CPU heatsink and verify that the fan assembly
is properly attached.
Workstation does not power on
and the LEDs on the front of
the workstation are not
flashing.
System unable to power on.
CAUTION Disconnect AC power from the
workstation before reseating or replacing
components because there is power to the system
board even when the workstation is powered down.
Press and hold the power button for less than four seconds.
If the hard drive LED turns green, then:
1. Remove the expansion cards.
2. Replace the system board.
OR
If the HDD LED does not illuminate, then:
1. Verify that the unit is plugged into a working AC outlet.
2. Open the access panel, and verify that the power
button harness is properly connected to the inline front
panel I/O device assembly connector.
3. Verify that the power supply cables are properly
connected to the system board.
4. Verify power supply functionality:
a. Disconnect AC power.
b. Remove all internal power supply cables from the
system board.
c. Plug in AC power.
●
If the power supply fan spins and the BIST*
LED lights, then the power supply is good.
Replace the system board.
●
If the power supply fan does not spin or the
BIST* LED does not light, replace the power
supply.
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.
Table 5-3 Minor problems (continued)
ENWW Troubleshooting scenarios and solutions 111

HP xw9400 Specifications

General

Brand	HP
Model	xw9400
Category	Desktop
Language	English