HP Integrity rx1600 Operation and Maintenance Guide

Chapter 6
Troubleshooting
Identifying and Diagnosing Hardware Problems
104
a. Turn off the HP Server power switch and unplug the AC power cords and any cables.
b. Disconnect the power distribution cable between the drive cage and the power distribution module and then
reconnect it.
c. Verify that the SCSI interface is correctly installed from SCSI A channel connector on the system board to the
connector on the SCSI cage.
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.
Step 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.
Step 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.