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Troubleshooting 52
General hardware problems (on page 53)
Internal system problems (on page 56)
System open circuits and short circuits (on page 62)
External device problems (on page 62)
Mouse and keyboard problems (on page 63)
Network controller problems (on page 64)
Power problems
Power source problems
Action:
1. Press the Power On/Standby button to be sure it is on. If the server has a Power On/Standby button that
returns to its original position after being pressed, be sure you press the switch firmly.
2. Plug another device into the grounded power outlet to be sure the outlet works. Also, be sure the power
source meets applicable standards.
3. Replace the power cord with a known functional power cord to be sure it is not faulty.
4. Replace the power strip with a known functional power strip to be sure it is not faulty.
5. Have a qualified electrician check the line voltage to be sure it meets the required specifications.
6. Be sure the proper circuit breaker is in the On position.
7. If Enclosure Dynamic Power Capping or Enclosure Power Limit is enabled on supported servers, be sure
there is sufficient power allocation to support the server. For more information, see the following
documents:
o The HP Power Capping and HP Dynamic Power Capping for ProLiant servers technology brief on
the HP website
(http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01549455/c01549455.p
df)
o The HP BladeSystem Onboard Administrator User Guide on the HP website
(http://www.hp.com/go/bladesystem/documentation)
8. Be sure no loose connections exist ("Loose connections" on page 41).
Power supply problems
Action:
1. Be sure no loose connections (on page 41) exist.
2. If the power supplies have LEDs, be sure they indicate that each power supply is working properly. Refer
to the server documentation. If LEDs indicate a problem with a power supply, replace the power supply.
3. Be sure the system has enough power, particularly if you recently added hardware, such as hard drives.
Additional power supplies may be required. Use the server documentation for product-specific
information.