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The wires inside of an ESD strap are prone to damage over time. When using an unmonitored kit, it is best
practice to regularly test the strap prior to each service call, and at a minimum, test once per week. A wrist
strap tester is the best method for doing this test. If you do not have your own wrist strap tester, check
with your regional office to find out if they have one. To perform the test, plug the wrist-strap's bonding-
wire into the tester while it is strapped to your wrist and push the button to test. A green LED is lit if the test
is successful; a red LED is lit and an alarm sounds if the test fails.
Wrist Strap Tester
Insulator Elements
It is critical to keep ESD sensitive devices, such as plastic heat sink casings, away from internal parts that are
insulators and often highly charged.
Unacceptable — DIMM lying on an insulator part
(plastic heat sink shroud)
Consider the Working Environment
Before deploying the ESD Field Service kit, assess the situation at the customer location. For example,
deploying the kit for a server environment is different than for a desktop or portable environment. Servers
are typically installed in a rack within a data center; desktops or portables are typically placed on office
desks or cubicles.
Always look for a large open flat work area that is free of clutter and large enough to deploy the ESD kit
with additional space to accommodate the type of system that is being repaired. The workspace should
Acceptable — DIMM separated from the
insulator part
5/7
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