General Safety Precautions; Esd Precautions - Silicon Graphics Rackable H2106-G7 System User's Manual

General Safety Precautions

ESD Precautions

!
007-5683-004
Follow these rules to ensure general safety:
• Keep the area around the Rackable H2106-G7 system clean and free of clutter.
• The Rackable H2106-G7 system weighs approximately 69 lbs (27.2 kg.) when fully loaded.
When lifting the system, two people at either end should lift slowly with their feet spread out
to distribute the weight. Always keep your back straight and lift with your legs.
• 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.
Caution: 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 sufficient to neutralize this difference before contact is
made 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 the board 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.
General Safety Precautions
29