Precautions - Nortel Circuit Card Installation Manual

Page 84 of 906 Circuit card installation

Precautions

553-3001-211 Standard 3.00
To avoid personal injury and equipment damage, review the following
guidelines before handling system equipment.
WARNING
Module covers are not hinged; do not let go of the covers.
Lift covers away from the module and set them out of your
work area.
WARNING
Circuit cards may contain a lithium battery. There is a
danger of explosion if the battery is incorrectly replaced.
Do not replace components on any circuit card; you must
replace the entire card.
Dispose of circuit cards according to the manufacturer's
instructions.
To avoid damage to circuit cards from static discharge, wear a properly
connected antistatic wrist strap when you work on system equipment. If a
wrist strap is not available, regularly touch one of the bare metal strips in a
module to discharge static. Figure 15 on
connection points for the wrist strap and the bare metal strips you should
touch.
Handle circuit cards as follows:
• Unpack or handle cards away from electric motors, transformers, or
similar machinery.
• Handle cards by the edges only. Do not touch the contacts or
components.
• Set cards on a protective antistatic bag. If an antistatic bag is not
available, hand-hold the card, or set it in a card cage unseated from the
connectors.
• Store cards in protective packing. Do not stack cards on top of each other
unless they are packaged.
August 2005
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