Oracle X5-2L, Service Manual, Page: 38 / 324

Troubleshoot Hardware Faults Using the Oracle ILOM Web Interface
38 Oracle Server X5-2L Service Manual • May 2015
Action
: Check that the AC cables are connected to both power supplies. Check that the power
supplies are operational (the PSU indicator panel should have a lit green AC OK indicator).
Ensure that the power supply is properly installed. A power supply that is not fully engaged
with its internal connector does not have power applied and does not have a lit green AC OK
indicator.
Prevention : When a power supply fails, replace it immediately. To ensure redundancy, the
server has two power supplies. This redundant configuration prevents server downtime, or
an unexpected shutdown, due to a failed power supply. The redundancy allows the server to
continue to operate if one of the power supplies fails. However, when a server is being powered
by a single power supply, the redundancy no longer exists, and the risk for downtime or an
unexpected shutdown increases. When installing a power supply, ensure that it is fully seated
and engaged with its connector inside the drive bay. A properly installed power supply has a lit
green AC OK indicator.
Top Cover
The server top cover is an important component for a properly functioning server. The top cover
is vital to the server cooling subsystem because it helps to maintain the pressure areas within
the server, and the top cover also protects against accidental exposure to hazardous voltages
and damage to internal components. For these reasons, the server top cover is interlocked to
the server power. The interlock is created by a switch that is mounted inside the server on the
housing for the power supply. The switch engages when the cover is installed, allowing power