Supermicro SC745S2-800VB, User Manual

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2-3
Chapter 2: System Safety
DVD-ROM Laser: CAUTION - this server may have come equipped with a
DVD-ROM drive. To prevent direct exposure to the laser beam and hazard-
ous radiation exposure, do not open the enclosure or use the unit in any
unconventional way.
2-5 General Safety Precautions
Keep the area around the chassis clean and free of clutter.
Place the chassis top cover and any system components that have been
removed away from the system or on a table so that they won’t accidentally
be stepped on.
While working on the system, do not wear loose clothing such as neckties
and unbuttoned shirt sleeves, which can come into contact with electrical
circuits or be pulled into a cooling fan.
Remove any jewelry or metal objects from your body, which are excellent
metal conductors that can create short circuits and harm you if they come
into contact with printed circuit boards or areas where power is present.
After accessing the inside of the system, close the system back up and
secure it to the rack unit with the retention screws after ensuring that all
connections have been made.
2-6 System Safety
Electrostatic discharge (ESD) is generated by two objects with different electrical
charges coming into contact with each other. An electrical discharge is created to
neutralize this difference, which can damage electronic components and printed
circuit boards. The following measures are generally suffi cient to neutralize this
difference before contact is made to protect your equipment from ESD:
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.
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.