IBM 4957-J10, Руководство пользователя

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Chapter 1. Appliance safety precautions
Observe physical, electrical, and electronic component safety precautions.
Physical
Ensure that your equipment rack is placed in a dust-free, well-ventilated area close to an uninterruptible
power supply (UPS). Leave enough room behind and around the rack for services and sufficient airflow.
• Keep the area around the appliance clean and free of clutter.
• Place the appliance top cover and any appliance components that were removed away from the
appliance or on a table so that they do not accidentally get damaged.
• While you are working on the appliance, do not wear loose clothing such as neckties and unbuttoned
shirt sleeves. They can retain a charge even if you are wearing a wrist strap, or could be pulled into a
fan.
• After you access the inside of the appliance, close the appliance and secure it to the rack unit with the
retention screws after you ensure that all connections are made.
• Close the rack’s front door and all panels and components on the appliances when not servicing to
maintain proper cooling.
Electrical
Basic electrical safety precautions must be followed to protect yourself and the appliance:
• Do not work alone with high-voltage components.
• Be aware of the locations of the power switch on the appliance and the room’s emergency power-off
switch, disconnection switch, or electrical outlet. If an electrical accident occurs, quickly remove power
from the system.
DANGER: A danger of explosion exists if the Onboard battery is installed upside down, which
reverses its polarities. This battery must be replaced only with the same or an equivalent type that
is recommended by the manufacturer. Dispose of used batteries according to the battery
manufacturer’s instructions.
Electronic components
Electrostatic discharge (ESD) is generated by two objects with different electrical charges when they
come into contact with each other. An ESD neutralizes this difference, which can damage electronic
components and printed circuit boards (PCBs). In general, the following measures are sufficient to
neutralize this difference before contact is made to protect equipment from ESD:
• Use a grounded wrist strap that is designed to prevent ESDs.
• Keep all components in their antistatic containers until ready for installation.
• Touch a grounded metal object before you remove any board from its antistatic container.
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