Power Goes Off On The Server And Does Not Come Back On - HP Integrity RX4640 Operation Manual

Step 5. Make sure that all boards are installed properly and the processors are installed in the correct slot.
They must be seated firmly in their slots and any cables must be connected firmly.
Step 6. If the server stopped working after you installed a new board, remove the board and turn on the
server. If your server now works, check the installation instructions received with the new board for
correct installation method. If the new board is preventing the server from powering on, it is likely
to have a serious electrical problem.
Step 7. If the server still does not work, remove all boards and options that you have installed (do not
remove the hard disk drives) and turn on the server.
Step 8. Add boards and options one at a time to determine which one is causing the problem.
Step 9. If you have added any memory, make sure that the DIMMs are seated properly in the board. Also
check the DIMM configuration, and that the DIMMs are matched pairs.

Power goes off on the server and does not come back on

When certain critical conditions exist, the server shuts down all power.
The critical conditions that may shut down the server are:
• Critical temperature fluctuations or changes
• Voltage problems (external AC line)
• Power supply failure
If the server powers-off, and before you try a restart, do the following:
Step 1. Examine the front panel LEDs for warning or fault indications. The system LED will be flashing
yellow with a warning indication and flashing red with a fault indication. See "Front Control Panel
LEDs" on page 74.
Step 2. Examine the QuickFind Diagnostic Panel for indications of specific warning or fault indications.
The diagnostic LEDs present patterns that categorize the source of the warning or fault. See
"QuickFind Diagnostic Panel LEDs" on page 76.
Step 3. Check to make sure power is getting to the server. Plug a known working device into the power
outlet.
Step 4. Check for proper ventilation for the server. The server should have at least three inches of space
around the front and rear for proper airflow when installed in a rack.
NOTE
Step 5. Check the system specifications and make sure the environmental temperature and voltage are in
the specified guidelines.
Step 6. Monitor the system to make sure you are not experiencing further temperature and voltage
problems.
Chapter 5
Temperature problems may be caused by a fluctuating power supply.
Troubleshooting
Possible Problems
73