HP Workstation xw4100, Сервисное и техническое руководство

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hp workstation xw4100 service and technical reference guide 5–21
system diagnostics and troubleshooting
Workstation powered
off automatically and
the Power LED flashes
Red two times, once
every second, followed
by a two second pause. Processor thermal
protection activated:
A fan may be blocked
or not turning.
OR
The heatsink is not
properly attached to
the processor. 1. Ensure workstation air vents are not
blocked and the cooling fan is
running.
2. Open hood, press power button,
and see if the processor fan spins.
If not spinning, make sure the fan’s
cable is plugged onto the system
board header. Ensure the fan is
fully/properly seated or installed.
3. Replace the processor fan.
4. Reseat processor heatsink and
verify that the fan assembly is
properly attached.
System does not power
on and the LEDs on the
front of the workstation
are not flashing. System unable to
power on. 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 is set
to the appropriate voltage.
2. Remove the expansion cards one at
a time until the 3.3 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 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. If the 3.3 V_aux light on the system
board is on, then replace the power
button harness.
5. If the 3.3 V_aux light on the system
board is off, then replace the power
supply.
6. Replace the system board.
solving minor problems (continued)
problem cause possible solution