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HP Xw8400 - Workstation - 4 GB RAM User Manual Page 117

Hp xw8400 service and technical reference guide.
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Table 5-2
Diagnostic LED codes (continued)
Power LED and Sound
Activity
Blinks red 3 times, once per
second, then 2-second pause, 3
beeps
Blinks red 4 times, once per
second, then 2 second pause, 4
beeps
Blinks red 5 times, once per
second, then 2 second pause,
5 beeps
Blinks red 6 times, once per
second, then 2 second pause,
6 beeps
ENWW
Chassis Indicator LEDs
CPU not installed.
1.
Check to see that the processor is present.
2.
Reseat the processor.
Power supply failure.
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.
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 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 lights, then the power supply
is good. Replace the system board.
If the power supply fan does not spin or the BIST* LED does not light, replace
the power supply.
Pre-video memory error.
1.
Reseat DIMMs
2.
Replace DIMMs one at a time to isolate faulty module
3.
Replace third-party memory with HP memory.
4.
Replace system board.
Pre-video graphics card error.
For systems with integrated graphics, replace the system board.
For systems with graphics cards, perform the following steps.
1.
Reseat the graphics card.
2.
Replace the graphics card.
3.
Replace the system board.
Diagnosis and Service Action
Diagnostic error codes
107

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