User's Manual
Chapter 4: System Safety
4-1
    Chapter 4  
System Safety
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Basic electrical safety precautions should be followed to protect yourself from 
harm and the system from damage:
 Be aware of the locations of the power on/off switch on the chassis as well as 
the room's emergency power-off switch, disconnection switch or electrical 
outlet. If an electrical accident occurs, you can then quickly remove power 
from the system. 
 Do not work alone when working with high voltage components.
 Power should always be disconnected from the system when removing or 
installing main system components, such as the serverboard, memory 
modules and the DVD-ROM and fl oppy drives (not necessary for SATA 
drives). When disconnecting power, you should fi rst power down the system 
with the operating system and then unplug the power cords from all the power 
supply modules in the system. 
  When working around exposed electrical circuits, another person who is 
familiar with the power-off controls should be nearby to switch off the power 
if necessary. 
 Use only one hand when working with powered-on electrical equipment. This 
is to avoid making a complete circuit, which will cause electrical shock.  
Use extreme caution when using metal tools, which can easily damage any 
electrical components or circuit boards they come into contact with. 
 Do not use mats designed to decrease electrostatic discharge as protection 
from electrical shock. Instead, use rubber mats that have been specifi cally 
designed as electrical insulators. 
 The power supply power cord must include a grounding plug and must be 
plugged into grounded electrical outlets.
4-1 Electrical Safety Precautions










