Fan Problems - HP ProLiant series Troubleshooting Manual

NOTE: It is recommended that no more than two DLT drives per bus exist.
•
If using an external DLT drive that requires a SCSI terminator to be secured to the unused SCSI IN
connector on the back of the drive, be sure the SCSI terminator is connected.
DLT drives can be daisy chained, but do not connect more than three units per SCSI controller. The
last DLT drive in the chain requires the SCSI terminator.
•
Check cables for damaged or bent connectors.
An error occurs during backup, but the backup is completed
Action: Contact the software vendor for more information about the message. If the error does not
disrupt the backup, you may be able to ignore the error.

Fan problems

General fan problems are occurring
Action:
Be sure the fans are properly seated and working.
1.
Follow the procedures and warnings in the server documentation for removing the access panels
a.
and accessing and replacing fans.
Unseat, and then reseat, each fan according to the proper procedures.
b.
Replace the access panels, and then attempt to restart the server.
c.
Be sure the fan configuration meets the functional requirements of the server. Refer to the server
2.
documentation.
Be sure no ventilation problems exist. If you have been operating the server for an extended period
3.
of time with the access panel removed, airflow may have been impeded, causing thermal damage to
components. Refer to the server documentation for further requirements.
Be sure no POST error messages
4.
displayed while booting the server that indicate temperature violation or fan failure information.
Refer to the server documentation for the temperature requirements for the server.
Access the IML to see if any event list error messages (on page 114) relating to fans are listed.
5.
Replace any required non-functioning fans and restart the server. Refer to the server documentation
6.
for specifications on fan requirements.
Be sure all fan slots have fans or blanks installed. Refer to the server documentation for requirements.
7.
Verify the fan airflow path is not blocked by cables or other material.
8.
Hot-plug fan problems are occurring
Action:
Check the LEDs to be sure the hot-plug fans are working. Refer to the server documentation for LED
1.
information.
NOTE: For servers with redundant fans, backup fans may spin up periodically to test functionality. This is
part of normal redundant fan operation.
Be sure no POST error messages
2.
displayed.
Be sure hot-plug fan requirements are being met. Refer to the server documentation.
3.
("POST error messages and beep
("POST error messages and beep
codes" on page 84) are
codes" on page 84) are
Hardware problems 34