ESD procedures

Purpose

Following is a list of the ESD-sensitive parts in the system console. Always wear the ESD wrist strap when you work on or touch any of these parts.

• All logic FRUs (cards and planars)
• All disk drives
• Any cables that are connected to ESD-sensitive parts.

See How to attach the ESD wrist strap.

To prevent damage when you work with ESD-sensitive parts, complete these instructions carefully.

• Keep the ESD-sensitive part in a special ESD bag until you are ready to install the part into the computer.
• Make the fewest possible movements with your body to prevent an increase of static electricity from clothing, fibers, carpets, and furniture.
• If instructed to do so, turn off the power before you remove ESD-sensitive parts.
• Just before you touch the ESD-sensitive part, discharge to the computer any static electricity in your body by touching the metal frame or cover of the computer. If possible, keep one hand on the frame when you install or remove an ESD-sensitive part.
• Never touch or work on any electronic circuits without wearing the ESD wrist strap.

  Touching the logic system board pins without wearing the ESD wrist strap (for example, while you count the pins) can cause logic card failures. Touching the voltmeter leads when you measure system board pins or cable connections can also cause ESD damage.

• Do not place any ESD-sensitive parts on the computer cover or on a metal table because large metal objects can become discharge paths if they are not grounded. If you must set aside an ESD-sensitive part, first place it into the special ESD bag.
• Prevent ESD-sensitive parts from being accidentally touched by other personnel such as service support representatives or customers. Reinstall all covers when you are not working on the computer.
• If possible, keep all ESD-sensitive parts in a grounded metal case.
• Be careful when you work with ESD-sensitive parts in cold weather. Low humidity and heating increase static electricity.