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Chapter 4 Troubleshooting - HP xw4100 Setup And Troubleshooting Manual

Hp xw series workstations.
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Table 4-3
Diagnostic Lights and Audible Codes (continued)
Activity
Green Power LED blinks
four times, once per
second.** No beeps.
For the following LED activity and beeps, the beeps will be heard through the chassis speaker. Blinks and beeps will be repeated for
5 cycles, after that, only the blinks will continue to repeat.
Red Power LED blinks two
times, once every second,
followed by a two-second
pause. Two beeps.
Red Power LED blinks three
times, once every second,
followed by a two-second
pause. Three beeps.
Red Power LED blinks four
times once every second,
followed by a two-second
pause. Four beeps.
20

Chapter 4 Troubleshooting

Possible Cause
only) or normal Suspend
mode.
Workstation in Suspend to
Disk or "Hibernate" mode.
Processor thermal
protection activated:
A fan may be blocked or not
turning.
OR
The heatsink/fan assembly
is not properly attached to
the processor.
Processor not installed (not
an indicator of bad
processor).
Power failure (power supply
is overloaded)
Recommended Action
None
CAUTION
Internal components may be powered even when
the system is off. To prevent damage, disconnect the workstation
power cord before you remove a component.
1.
Ensure that the workstation air vents are not blocked and the cooling
fan is running.
2.
Open the access panel, press power button, and see if the processor
fan spins. If the processor fan is 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.
If fan is plugged in and seated properly, but is not spinning, the
problem may be in the processor fan. Contact HP for assistance.
4.
Verify that the fan assembly is properly attached. If problems persist,
there may be a problem with the processor heatsink. Contact HP for
assistance.
1.
Check to see that the processor is present.
2.
Reseat the processor.
CAUTION
Internal components may be powered even when
the system is off. To prevent damage, disconnect the workstation
power cord before you remove a component.
1.
Open the access panel and ensure the following connections are
secure on the system board:
24–pin main power (all systems)
4–pin CPU (xw4000 series)
8–pin CPU (xw6000/xw8000/xw9000 series)
4–pin memory (xw8000/xw9000 series)
2.
Check if a device is causing the problem by removing ALL attached
devices (such as hard, diskette, or optical drives, and expansion
cards.) 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 that is causing
the failure. Continue adding devices one at a time to ensure all
devices are functioning properly.)
3.
Check the power supply functionality.
a. Disconnect the AC power.
b. Disconnect ALL internal power supply cables.
ENWW

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