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SAFETY
Protecting Against Static Electricity
CAUTION
Circuit boards are susceptible to damage caused by electrostatic discharge. You
must keep this in mind as you handle the circuit boards. Refer to Vertical
publication IMI01-005, Handling of Electrostatically Sensitive Components, for
general information. Specific handling precautions are also included in this
installation manual.
The telephone system may include some installed circuit boards when it arrives at your site. The equipment
cabinets provides universal slots that will accept either line or station boards.
When removing or installing circuit boards in the cabinets, you must
wear a static discharge wrist strap
. Be sure
that the strap is touching bare skin and is connected to an AC or earth ground.
Disconnect the AC power cord
from the AC outlet (or extenral battery back-up system if applicable) before you
remove or install the circuit board.Whenever you remove a circuit board from a cabinet, immediately place the
board in a static protection bag while you still have your wrist strap in place and properly grounded.
When removing circuit boards from an installation location for servicing,
always transport them to a static-safe
work area in static protection bags
. If you do not already have a static-safe work area, you can create one by
arranging a work area as detailed in the illustration.
SAFETY AND REGULATORY CONSIDERATIONS
ESD Protective
Work surface
Static Wrist Strap
Common Point Ground
Typical Earth Ground
ESD Protective Mat
ESD Protective Mat
DX-120 Installation Manual - Technical Manual Vol I
Summary of Contents for comdial DX-120
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