Precautions - NEC Express5800 320La User Manual

Precautions

The following warnings and cautions apply throughout this chapter. Only a
technically qualified person should integrate and configure the system.
The only procedures that can safely be done with the system power on is
removing or installing (hot-swapping) an SCA disk drive/carrier assembly in the
SCSI hot-swap drive cage, hot-swapping a failed power supply, hot-swapping a
failed device module, or hot swapping a CPU or PCI module. Note that hot-
swapping a PCI module or a CPU module requires that the other module be
operating properly. For any other procedures inside the system, turn off system
power and disconnect the AC power cord (s).
Before doing any procedures in this chapter that require the
server to be off, make sure that your system is powered off
and unplug all AC power cords. Failure to disconnect power
before opening your system can result in personal injury and
equipment damage.
System power on/off. The DC push-button on/off switch (a
convex button) on the front panel DOES NOT turn off the
system AC power. To remove power from system, you must
unplug the AC power cords (from wall outlets or power
supply).
Hazardous conditions, power supply. Hazardous voltage,
current, and energy levels are present inside the power
supply. There are no user serviceable parts inside it;
servicing should be done by technically qualified personnel.
Hazardous conditions, devices & cables. Hazardous
electrical conditions may be present on power, telephone,
and communication cables. Turn off the system and
disconnect the power cords, telecommunications systems,
networks, and modems attached to the system before
opening it. Otherwise, personal injury or equipment damage
can result.
! WARNING
CRU Replacement and Server Upgrades 4-3