HP Integrity Server rx4640 manual Power Shuts Off and Does Not Come Back On

		Troubleshooting
		Possible Problems
Step	6.	Verify that the server is plugged into a power source that is within specifications described on the
		label of the power supply.
Step	7.	Make sure that the internal SCSI chain is terminated and that termination is not enabled on any of
		the drives. Note that LVD SCSI termination is provided on the cable.
Step	8.	Check that the processors are installed in the correct sockets and that terminators are installed in
		all unused sockets.
Step	9.	Reset the main memory DIMMs.

Step 10. If date and time or customer settings are being cleared, the I/O baseboard battery may need to be replaced.

The Server LED or Diagnostic LEDs Are Not On and No Error Messages Appear

If the server does not work (with no LEDs illuminated) and no error messages appearing, check the following:

Step	1.	Make sure that all cables and the ac power cord are plugged into their proper receptacles.
Step	2.	Make sure that the ac outlet is working. If the server is plugged into a switched multiple-outlet box,
		make sure that the switch on the outlet box is turned on.
Step	3.	Make sure that the server is turned on (the power-on light should be green and the fans should be
		on).
Step	4.	Turn the server off, wait at least twenty seconds, then turn the server back on to see if the failure
		can be cleared.
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 Shuts Off 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, internal dc rails))

•Power supply failure (if only one power supply is installed in the server)

•More than one fan has failed

If the server powers-off, and before you try a restart, do the following:

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