HP Xw4600 - Workstation - 2 GB RAM Technical Reference Manual page 122

Table 6-1 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
Blinks red 5 times (once per
second), then a 2-second
pause, and then 5 beeps
Blinks red 6 times (once per
second), then a 2-second
pause, and then 6 beeps
Blinks red 7 times (once per
second), then a 2-second
pause, and then 7 beeps
112 Chapter 6 System diagnostics and troubleshooting
Diagnosis and service action
Thermal shutdown has occurred:
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 determine whether the processor
fan spins. If it does not spin, ensure the fan cable is plugged into the system board.
Ensure that the fan is properly seated.
3. If the fan is plugged in and seated but not spinning, then replace processor fan.
4. Reseat the processor heatsink and verify that the fan assembly is properly
attached.
Processor not installed
1. Install processor.
2. Reseat processor.
Power supply failure.
1. Open the access panel, and be sure the four-wire power supply cable is properly
connected to the system board.
2. Locate a faulty device by removing all devices and then reinstalling one at a time
until the workstation fails. Replace the device causing the failure. Continue adding
devices to ensure all are functioning properly.
3. Verify the 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, 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, replace the power supply.
Pre-video memory error.
1. Reseat memory modules.
2. Replace memory modules one at a time to find the faulty module.
3. Replace third-party modules with HP memory.
4. Replace the system board.
Pre-video graphic card error. For systems with integrated graphics, replace the system
board. For systems with graphic cards:
1. Reseat the graphic card. Power on the workstation.
2. Replace the graphic card.
3. Replace the system board.
System board failure (ROM detected a failure before video). Replace system board.
ENWW