HP ET115AV HP xw4400 Workstation - Service and Technical Reference Guide - Page 117

Diagnostic LED codes continued, Table 5-2

Page 117 highlights

Table 5-2 Diagnostic LED codes (continued) Chassis indicator LEDs Power LED and sound activity Diagnosis and service action OR Press the power button. If HDD LED does not illuminate, then: 1. Verify that the unit is plugged into a working AC outlet. 2. Open access panel and verify that the power button harness is properly connected to the inline front panel I/O device assembly connector. 3. Verify that the power supply cables are properly connected to the system board. 4. 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. Blinks red 2 times, once per second, then 2-second pause, 2 beeps 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 CPU heatsink and verify that the fan assembly properly attached. Blinks red 3 times, once per CPU not installed. second, then 2-second pause, 3 beeps 1. Install CPU. 2. Reseat CPU. Blinks red 4 times, once per second, then 2-second pause, 4 beeps 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 faulty device by removing all devices and then reinstalling one at a time until 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. ENWW Diagnostic error codes 107

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Chassis indicator LEDs
Power LED and sound
activity
Diagnosis and service action
OR
Press the power button. If HDD LED does not illuminate, then:
1.
Verify that the unit is plugged into a working AC outlet.
2.
Open access panel and verify that the power button harness is properly connected
to the inline front panel I/O device assembly connector.
3.
Verify that the power supply cables are properly connected to the system board.
4.
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.
Blinks red 2 times, once per
second, then 2-second pause,
2 beeps
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 CPU heatsink and verify that the fan assembly properly attached.
Blinks red 3 times, once per
second, then 2-second pause,
3 beeps
CPU not installed.
1.
Install CPU.
2.
Reseat CPU.
Blinks red 4 times, once per
second, then 2-second pause,
4 beeps
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 faulty device by removing all devices and then reinstalling one at a time
until 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.
Table 5-2
Diagnostic LED codes (continued)
ENWW
Diagnostic error codes
107