HP xw6400 Service And Technical Reference Manual page 119

Table 5-2 Diagnostic LED codes (continued)
Chassis indicator LEDs
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
Blinks red 7 times, once per
second, then 2-second pause,
7 beeps.
ENWW
Diagnosis and service action
CPU not installed.
1. Install CPU.
2. Reseat CPU.
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.
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 system board.
Pre-video graphic card error.
For systems with integrated graphics, replace system board.
For systems with graphic cards:
1. Reseat the graphic card. Power on the system.
2. Replace the graphic card.
3. Replace the system board.
System board failure (ROM detected failure before video).
Replace system board.
Diagnostic error codes 109