Problem Cause Solution
Workstation powers off and
the Power LED flashes red
2 times (once every
second), followed by a 2-
second pause.
Processor thermal
protection is activated.
A fan might be blocked
or not turning.
OR
The processor heatsink
fan assembly is not
properly attached to the
processor.
1. Ensure that the workstation air vents are
not blocked.
2. Open the access panel and press the
workstation power button.
3. Verify that the system fan is running.
4. Verify that the processor heatsink fan
spins.
If the heatsink fan is not spinning, verify
that the fan cable is plugged into the
system board connector. Verify that the fan
is properly seated.
5. Replace the processor heatsink.
Power LED flashes red
(once every 2 seconds).
Power failure (power
supply is overloaded).
1. Determine whether a device is causing the
problem by performing the following:
a. Disconnect AC power.
b. Remove all attached devices.
c. Power on the workstation.
If the system enters the POST, perform the
following:
a. Power off the workstation.
b. Replace one device at a time and
repeat this procedure until a failure
occurs.
c. Replace the device causing the failure
d. Continue adding devices one at a time
to verify that all devices are
functioning.
2. Verify power supply functionality.
a. Disconnect AC power.
b. Remove the internal power supply
cables from system board (you do not
need to remove power supply from
chassis).
c. Plug in AC power.
●
If the power supply fan spins and
the LED illuminates (see
Testing
power supply on page 68), the
power supply is good. Replace the
system board.
●
If the power supply fan does not
spin or the LED does not
illuminate (see
Testing power
supply on page 68), replace the
power supply.
Table 11-2 Power supply problems (continued)
ENWW Troubleshooting scenarios and solutions 69
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