HP ProLiant DL140 User Manual page 58

58 HP ProLiant 100 Series Server User Guide
PPM problems
Action: If the PPMs are not integrated on the system board:
1. If applicable, check the PPM LEDs to identify if a PPM failure occurred. For
information on LEDs, refer to the server documentation.
2. Reseat each PPM, and then restart the server.
3. If reseating the PPMs is not effective, remove all but one PPM, restart the
server to see if the PPM is working, and then install each PPM individually,
cycling power each time. Follow the warnings and cautionary information in
the server documentation.
System open circuits and short circuits
Action:
1. Check the server LEDs to see if any statuses indicate the source of the
problem. For LED information, refer to the server documentation.
2. Remove all power sources to the server.
3. Be sure no loose connections (on page 23) exist in the area.
4. Be sure each component in the area is working. Refer to the section for each
component in this guide.
If you cannot determine the problem by checking the specific area, perform each
of the following actions. Restart the server after each action to see if the problem
has been corrected.
•
Reseat all I/O expansion boards.
CAUTION: Do not operate the server for long periods without
the access panel. Operating the server without the access panel results
in improper airflow and improper cooling that can lead to thermal
damage.
CAUTION: Do not operate the server for long periods without
the access panel. Operating the server without the access panel results
in improper airflow and improper cooling that can lead to thermal
damage.