HP XW3400 - Manual (Page 127)

Activity Beeps Possible Cause Recommended Action
Red Power LED flashes nine
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
9 System powers on but is
unable to boot.
1 . Check that the voltage selector, located on the
rear of the power supply (some models), is set
to the appropriate voltage. Proper voltage
setting depends on your region.
2 . Replace the system board.
3 . Replace the processor.
Red Power LED flashes ten
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
10 Bad option card. 1 . Check each option card by removing the card
(one at a time if multiple cards), then power
on the system to see if fault goes away.
2 . Once a bad card is identified, remove and
replace the bad option card.
3 . Replace the system board.
System does not power on and
LEDs are not flashing.
None System unable to power
on.
Press and hold the power button for less than 4
seconds. If the hard drive LED turns green, the
power button is working correctly. Try the
following:
1 . Check that the voltage selector (some models),
located on the rear of the power supply, is set
to the appropriate voltage. Proper voltage
setting depends on your region.
2 . 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 the 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 5V_aux light on the system
board is turned on. If it is turned on, then
replace the power button harness. If the
problem persists, replace the system board.
5 . If the 5V_aux light on the system board is not
turned on, remove the expansion cards one at
a time until the 5V_aux light on the system
board turns on. It the problem persists,
replace the power supply.
Table C-2 Diagnostic Front Panel LEDs and Audible Codes (continued)
ENWW Interpreting POST diagnostic front panel LEDs and audible codes 117