Prevenon of Electrostac Discharge Damage
Device components that are shipped in anstac bags are sensive to damage from stac electricity.
Some components can be impaired by voltages as low as 30 V. You can easily generate potenally
damaging stac voltages whenever you handle plasc or foam packing material or if you move
components across plasc or carpets. Observe the following guidelines to minimize the potenal for
electrostac discharge (ESD) damage, which can cause intermient or complete component failures:
• Always use an ESD wrist strap when you are handling components that are subject to ESD damage,
and make sure that it is in direct contact with your skin.
If a grounding strap is not available, hold the component in its anstac bag (see Figure 99 on page
358) in one hand and touch the exposed, bare metal of the device with the other hand immediately
before inserng the component into the device.
WARNING: For safety, periodically check the resistance value of the ESD grounding
strap. The measurement must be in the range 1 through 10 Mohms.
Averssement Par mesure de sécurité, vériez régulièrement la résistance du bracelet
anstaque. Cee valeur doit être comprise entre 1 et 10 mégohms (Mohms).
• When handling any component that is subject to ESD damage and that is removed from the device,
make sure the equipment end of your ESD wrist strap is aîš‚ached to the ESD point on the chassis.
If no grounding strap is available, touch the exposed, bare metal of the device to ground yourself
before handling the component.
• Avoid contact between the component that is subject to ESD damage and your clothing. ESD
voltages emiîš‚ed from clothing can damage components.
357
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