HP LH4r HP Netserver Service Handbook, Volume 2 - Mid - Page 93

On = Steady green Flash = Regular, slow flash (1 Hz) Blink = Regular, fast flash Double-blink = Irregular, double-flash The diagnostic LEDs are located on the the processor board, are labeled DIMM 0 through 3, and correspond to DIMM sockets 0 through 3. The LEDs are visible from either side of the board, and can also be viewed through the NetServer's rear panel cooling perforations. Diagnostic LEDs: DIMM 3 DIMM 2 DIMM 1 DIMM 0 Memory Error Codes LED Code Off Definition No DIMM installed or Non-EEPROM DIMM installed On Flash HP DIMM installed Inappropriate HP DIMM installed or Hard memory error Blink Double Blink Non-HP DIMM installed Inappropriate non-HP-DIMM installed or Hard memory error Hard memory error LED Processor Error Codes Alternating LED Codes: LED LED LED LED 0 1 2 3 ON-OFF-OFF-ON & OFF-ON-ON-OFF Definition Processor chip overtemperature Action N/A (Normal) Reseat the DIMM or Move it to another socket or Replace DIMM N/A (normal) Replace with appropriate HP DIMM or Run Diagnostic Assistant to find the problem Run Diagnostic Assistant to find the problem N/A (normal for non-HP DIMM) Replace with appropriate DIMM or Run Diagnostic Assistant to find the problem Run Diagnostic Assistant to find the problem Run Diagnostic Assistant to find the problem Action Check fans for function. Wait for system to cool down (20-25 minutes) and press the 85