IBM Support

Handling ESD sensitive parts - Servers

Troubleshooting


Problem

Electrostatic Discharge (ESD) Many products use parts that are known to be sensitive to electrostatic discharge (ESD), or static electricity. Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive.

Resolving The Problem

Electrostatic Discharge (ESD)

Many products use parts that are known to be sensitive to electrostatic discharge (ESD), or static electricity. Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge, and can be damaged or destroyed by ESD. ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge. To prevent damage when you work with ESD-sensitive parts, observe the following instructions. Do these in addition to taking all the usual precautions, such as switching off the power and unplugging the power cord before removing adapter cards.

When handling ESD sensitive parts:

  • Keep the ESD-sensitive part in its original protective shipping package (a special ESD bag) until you are ready to install the part into the machine.
  • Make the fewest possible movements with your body to prevent an increase of static electricity from clothing fibers, carpets, and furniture. Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap.
  • Wear a grounded wrist strap against your skin to eliminate static on your body. Put the ESD wrist strap on your wrist. Ensure the machine is turned off. Connect the wrist strap to the serial bracket mounting screw. This discharges any static electricity in your body to the machine frame. (see "Grounding Systems" below).
  • Hold the ESD-sensitive part by its edge connector shroud (cover). Do not touch its pins. If you are removing a pluggable module, use the correct tool.
  • Do not place the ESD-sensitive part on the machine cover or on a metal table. If you need to put down the ESD-sensitive part for any reason, first put it into its special bag. Machine covers and metal tables are electrical grounds. They increase the risk of damage because they make a discharge path from your body through the ESD-sensitive part. (Large metal objects can be discharge paths without being grounded).
  • Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices.
  • Prevent ESD-sensitive parts from being accidentally touched by others. Reinstall machine covers when you are not working on the machine. Avoid contact with other people.
  • If possible, store all ESD-sensitive parts in their original protective shipping packages within a grounded metal cabinet/case.
  • Be extra careful while working with ESD-sensitive parts when cold-weather heating is used because low humidity increases static electricity.
Grounding Systems

The use of a grounding system is desirable but not required to protect against ESD damage. Select a grounding system, such as those listed below, to provide protection that meets the specific service requirement.

  • Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.
  • Use an ESD common ground or reference point when working on a double-insulated or battery-operated system. You can use coax or connector-outside shells on these systems.
  • Use the round ground-prong of the ac plug on ac-operated computers. Proper grounding of the electrical outlet can be verified by a certified electrician.

Notes:

  • Use product-specific ESD procedures when they exceed the requirements noted here.
  • Make sure that the ESD protective devices you use have been certified (ISO 9000) as fully effective.

Document Location

Worldwide

Operating System

BladeCenter:Operating system independent / None

System x:Operating system independent / None

Older System x:Operating system independent / None

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Document Information

Modified date:
23 January 2019

UID

ibm1MIGR-4N3KLN