Electrostatic Discharge (ESD) Damage
2-4 Sixth Edition 95741
•To clean the work surface, use a mild detergent and water, and make sure
that the surface is completely dry before you use it.
•Periodically check the electrical resistance of the ground cord and the wrist-
strap coil cord.
Note: The ground cord should measure less than 1.2 MΩ, and the coil cord
should measure between 0.8 and 1.2 MΩ. Repair or replace the
cords if they no longer meet these requirements.
ESD-Protection Procedure
Remember that each customer environment is different. Address all the
customer’s concerns before you work on any equipment.
Prepare the Work Area
1. Before you service the equipment, unfold the grounding-kit work surface
completely and place it on a convenient surface.
2. Attach one end of the ground cord to the work surface; secure the snap
fastener.
Note: You will attach the free end in a later step.
3. Slip on an ESD wrist strap. Make sure that the strap is comfortable and
makes contact with the entire circumference of your wrist.
4. Snap one end of the coil cord to the wrist band.
Access the Equipment
5. Carefully open the doors to the equipment or remove the covers from the
equipment. Do not touch any internal components.
CAUTION:
Be sure that you are properly grounded before you touch any internal
components.
6. Attach the free end of the coil cord to the most appropriate place:
a. If you are working on components from a small piece of equipment,
attach the free end of the coil cord to the grounding-kit work surface. In
addition, be sure that you touch an unpainted metal surface on the
equipment before you touch an internal component.
b. If you are working on components from a large piece of equipment,
attach the free end of the coil cord to a grounding jack or to an
unpainted metal surface inside the equipment.