HP Xw6600 - Workstation - 2 GB RAM Technical Reference Manual page 117

Table 5-1 Diagnostic LED codes (continued)
Chassis indicator LEDs
Power LED and sound
activity
Blinks red 2 times (once per
second), then a 2–second
pause, and then 2 beeps
Blinks red 3 times (once per
second), then a 2-second
pause, and then 3 beeps
Blinks red 4 times (once per
second), then a 2-second
pause, and then 4 beeps
ENWW
Diagnosis and service action
3. Verify that the power supply cables are properly connected to the system board.
4. Verify power supply functionality.
a. Disconnect AC power.
b. Remove all internal power supply cables from the system board.
c. Plug in AC power.
◦ If the power supply fan spins and the BIST LED illuminates
supply on page 111), then the power supply is good. Replace the system
board.
◦
If the power supply fan does not spin or the BIST LED does not illuminate
(Testing power supply on page
Thermal shutdown has occurred
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 it does not spin, ensure that the fan
cable is plugged into the system board connector. Ensure that the heatsink is
properly seated.
5. Replace the processor heatsink.
Processor is not installed
1. Install the processor.
2. Reseat the processor.
3. If the problem persists, replace the processor.
Power failure
1. Perform the power supply self-test
2. Open the access panel and ensure that the necessary power supply cables are
connected to the system board.
3. Locate a faulty device by removing all devices and then reinstalling one at a time
until the workstation fails:
a. Disconnect AC power to the workstation.
b. Remove all devices.
c. Reinstall a device
d. Reconnect AC power.
111), then replace the power supply.
(Testing power supply on page
Customer Self Help 107
(Testing power
111).