NEC Express5800 320La, User Manual

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4-2 CRU Replacement and Server Upgrades
General Information
This chapter contains procedures for removing and installing customer-
replaceable units (CRUs) and step-by-step instructions for upgrading your
server system. When you disassemble any part of the server, note the orientation
and placement of any cables or shielding that you remove.
! WARNING
The DC push button on/off switch on the front panel does
not turn off system AC power. Also, +5vdc is present on the
system boards whenever the AC power cord is connected
between the system and an AC outlet. Before performing
any procedures that require the server to be off, first power
off the DC by pushing the power on/off button located on the
front panel. Make sure your system is powered off and the
AC power cord is unplugged from the system. Failure to
disconnect power before opening your system can result in
personal injury and equipment damage.
!
CAUTION
Operating your system with the access cover removed can
damage system components. For proper cooling and airflow,
always replace the access cover before powering on.