HP xw4400 Service And Technical Reference Manual page 126

Table 5-2 Diagnostic LED codes (continued)
Chassis indicator LEDs
Power LED and sound
activity
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
116 Chapter 5 System diagnostics and troubleshooting
Diagnosis and service action
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.
ENWW