HP xw4100 Getting Started Manual page 42

Troubleshooting
Problem
System does not power
on and the LEDs on the
front of the workstation
are not blinking.
4–8
Cause
System unable to
power on.
www.hp.com
Solution
Press and hold the power button
for less than 4 seconds. If the
hard drive LED turns green, then:
1. Check that the voltage
selector, located on the rear
of the power supply, is set
to the appropriate voltage
(for the xw4100 only).
Proper voltage setting
depends on your region.
2. Remove the expansion
cards one at a time until the
5.5 V_aux light on the
system board turns on.
3. Replace the system board.
OR
Press and hold the power button
for less than 4 seconds. If the
hard drive LED does not turn on
green then:
1. Check that unit is plugged
into a working AC outlet.
2. Open hood and check that
the power button harness is
properly connected to the
system board.
3. Check that both power
supply cables are properly
connected to the system
board.
4. Check to see if the 5.5
V_aux light on the system
board is turned on. If it is
turned on, then replace the
power button harness.
5. If the 5.5 V_aux light on the
system board is not turned
on, then replace the power
supply.
6. Replace the system board.
Getting Started Guide