SC818 Chassis User's Guide Chapter 1- Introduction A. Safety Guidelines A-1 Electricity Safety ! General Electrical Safety Guidelines Use the exact type of power cords as required. Be sure to use power cord(s) that came with safety certifi ca- tions. The power cord(s) must be compliant with the AC voltage require- ments in your region. Plug the Power cord(s) into a socket that is properly grounded before turning on the power. Take extra precautionary measures when working with high voltage components. It is not recommended to work alone. Before removing or installing chassis components, be sure to disconnect the power fi rst. Turn off the system before you dis- connect the power supply. A-2.
ESD Safety Guidelines Electric Static Discharge (ESD) can damage electronic com ponents. To ! prevent damage to your system board, it is important to handle it very carefully. The following measures are generally suffi cient to protect your equipment from ESD. Use a grounded wrist strap designed to prevent static discharge. Keep all components and printed circuit boards (PCBs) in their antistatic bags until ready for use. Touch a grounded metal object before removing chassis components or the motherboard from the antistatic bag. Do not let components or PCBs come into contact with your clothing, which may retain a charge even if you are wearing a wrist strap.
Handle a motherboard by its edges only; do not touch its components, peripheral chips, memory modules or contacts. When handling processors, chips or modules, avoid touching their pins. Put the motherboard or components back into their antistatic bags when not in use. For the grounding purpose, make sure that your chassis provides excellent conductivity between the power supply, the case, the mounting fasteners and the motherboard. 1-4