Many services gateway hardware components are sensitive to damage
from static electricity. Some components can be impaired by voltages
as low as 30 V. You can easily generate potentially damaging
static voltages whenever you handle plastic or foam packing material
or if you move components across plastic or carpets. Observe the following
guidelines to minimize the potential for electrostatic discharge (ESD)
damage, which can cause intermittent or complete component failures:
Always use an ESD wrist strap or ankle strap, and verify
that it is in direct contact with your skin.
For safety, periodically check the resistance value of the ESD
strap. The measurement should be in the range of 1 to 10 Mohms.
When handling any component that has been removed from
the chassis, verify that the equipment end of your ESD strap is attached
to one of the ESD points on the chassis, which are shown in Figure 7.
Avoid contact between the component and your clothing.
ESD voltages emitted from clothing can still damage components.
When removing or installing a component, always place
it component-side up on an antistatic surface, in an antistatic card
rack, or into an electrostatic bag (see Figure 6). If you are returning a component,
place it into an electrostatic bag before packing it.
Figure 6: Placing a Component into
an Electrostatic Bag