NEC HV8600 User Manual page 74

This section contains step-by-step instructions for removal and installation of all
the major system components. When you disassemble the server, note the
orientation and placement of any cables or shielding that you remove.
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 board whenever the AC power cord is connected
between the system and an AC outlet. Before performing
any procedures, 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.
The server management logic on the system board monitors
system voltage changes. When powering down your system,
you may experience a 1- to 5-second delay from the time
you press the push button power on/off switch and your
system powering down. This is normal system operation and
is required by the server management logic.
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.
4-2 Upgrading Your System
!
WARNING
! CAUTION
! CAUTION