Operations Guide, Fourth Edition - HP Integrity rx1620

d. Check the SCSI bus for proper loading,
e. Reconnect the AC power cords and any cables. Restart the HP Server to determine
whether the LEDs now become illuminated during the boot. If not, contact your reseller.
4. If the LED indicator on a single disk drive is not illuminated during boot, the disk drive
may be installed incorrectly, or its lightpipes may be damaged.
Check the lightpipe on the disk drive as follows:
a. Remove the disk drive.
b. Inspect the lightpipes for damage. If a lightpipe is damaged, contact your reseller.
CAUTION: The lightpipes are fragile. Be careful not to damage them when you inspect
them or when you reinsert the disk drive.
c. Reinstall the disk drive.
d. Restart the HP Server to determine whether the LED now becomes illuminated during
the boot. If not, contact your reseller.
5. Use the EFI shell command info io to check the SCSI drives.
Identifying and Diagnosing Hardware Problems
Should a failure occur, the system LED, the LAN LED, the diagnostic LEDs, and the system event
log (SEL) will help you identify the problem:
• LEDs. The system LED, LAN LED, and diagnostic LEDs on the display panel of the server
change color and blink in different patterns to help identify specific problems. LEDs on the
front and rear panels of the server display LAN activity.
• The System Event Log (SEL) provides detailed information about the errors identified by
the LEDs.
If the LEDs and SEL do not give you enough information for you to identify the problem you
are experiencing, HP also provides diagnostic tools with each operating system.
Power and System LEDs
The Power and System LEDs indicate the state of the system. When the System LED is blinking
yellow or red, a problem exists.
NOTE: When the optional management processor (MP) card is installed, the four diagnostic
LEDs on the display panel are disabled.
Systems with the Optional Management Processor Card Installed
The following system LED states exist for systems having a optional management processor card
installed.
Table 4-2 System LED States
StateSystem LED
OffOff
Running OSSolid green
Booting or running code other than operating system (boot or diagnostic).Blinking green
Identifying and Diagnosing Hardware Problems 79