HP xw8400 Service And Technical Reference Manual page 113

Table 5-2 Diagnostic LED codes (continued)
Power LED and Sound Activity
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
Blinks red 7 times, once per second,
then 2 second pause, 7 beeps.
Blinks red 8 times, once per second,
then 2 second pause, 8 beeps
Blinks red 9 times, once per second,
then 2 second pause, 9 beeps
ENWW
Chassis Indicator LEDs
Power supply failure.
1. Open the access panel, and be sure the four-wire power supply cable is properly connected
system board.
2. Locate faulty device by removing all devices and then reinstalling one at a time until workstatio
Replace the device causing the failure. Continue adding devices to ensure all are functioning p
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 go
Replace the system board.
●
If the power supply fan does not spin or the BIST LED does not light, replace the p
supply.
Pre-video memory error.
●
Reseat memory modules.
●
Replace memory modules one at a time to find the faulty module.
● Replace third-party modules with HP memory.
●
Replace system board.
Pre-video graphics card error.
For systems with integrated graphics, replace system board.
For systems with graphic cards:
● Reseat the graphics card.
●
Replace the graphics card.
●
Replace the system board.
System board failure (ROM detected failure before video).
Replace system board.
Invalid ROM based on bad checksum.
1. Reflash ROM.
2. Replace system board.
System powers on but is unable to boot.
1. Replace the system board.
2. Replace the processor.
Diagnosis and Service Action
Diagnostic error codes 105