Troubleshooting
Troubleshooting Methodology
Chapter 4
48
Offline troubleshooting programs are available on the resource CD that is shipped with your HP Server. To
troubleshoot your system you should be familiar with the Offline Diagnostics Environment (ODE) which runs
in the Extensible Firmware Interface (EFI). Descriptions and user information about offline troubleshooting
tools are available at http://docs.hp.com. The offline tools are available for downloading at
http://software.hp.com.
Using the Front Panel Power Button
The server power button on the front panel operates differently, depending on how long the button is held in
and on what the system is doing when the button is pressed. You must be aware of its uses to properly
troubleshoot the system.
If the server is off, and power is not connected to server power supplies, pressing the power button has no
effect.
If the server is off, and power is connected to server power supplies, the front panel power LED will blink at a
1-Hz rate. In this state, standby power is available to server circuits, but main power is off. Pressing and
holding the power button will accomplish the following:
• 1 – 3 seconds. System power turns on. The e-buzzer will beep if an error is encountered. (Refer to
“Troubleshooting Using Beep Codes (System e-buzzer)” on page 50 for a description of the e-buzzer.)
• 3 – 5 seconds. The e-buzzer will repeat the last stored error message (beep code).
If the server is on and the system is at the EFI, pressing and holding the power button will accomplish the
following:
• 1 – 3 seconds. System power turns off immediately (hard power down).
• 3 – 5 seconds. The e-buzzer will repeat the last stored error message (beep code).
• 5 seconds or longer. System power turns off immediately (hard power down).
If the server is on and the operating system is running, pressing and holding the power button will
accomplish the following:
• 1 – 3 seconds. System power turns off (software controlled power down).
• 3 – 5 seconds. The e-buzzer will repeat the last stored error message (beep code).
• 5 seconds or longer. System power turns off immediately (hard power down).
If the Server Will Not Power Up
Power problems during installation are usually related to the install process. If your server will not power up,
check the LED indicators on the power supply rear panels. Refer to “Rear Panel LEDs” on page 57 and
perform the following:
• If the DC In indicators are lit, it can be assumed that power is available to the server.
• If a fault indicator is lit, reseat the power supply. If the problem persists, remove and reseat boards within
the server. If the problem still persists, replace the power supply and/or the power supply interface board.
• If the DC Out indicators are lit, it can be assumed that power is supplied to the server circuits. If the
console shows that the server is powered up, but server LEDs indicate that power is off, remove and
reseat connectors on the LED status board. (If the problem still persists, replace the LED status board.) If
the console shows that the server is not powered up (server is off), remove and reseat connectors on the
system board. (If the problem still persists, replace the power supply interface board, the MP board, or the
system board.)
