Instruction manual

INTUITY Messaging Solutions Release 4
MAP/5P Maintenance 585-310-186
Issue 3
October 1997
Getting Inside the Computer
Page 4-2Protecting against Damage from Electrostatic Discharge
4
Protecting against Damage from
Electrostatic Discharge
!
CAUTION:
Read this section before unpacking the MAP/5P. You
must
observe proper
grounding techniques to prevent the discharge of static electricity from your
body into ESD-sensitive components.
Circuit cards and packaging materials that contain ESD-sensitive components
are usually marked with a yellow-and-black warning symbol (Figure 4-1
).
Figure 4-1. ESD Warning Symbol
To avoid damaging ESD-sensitive components, follow these rules:
■ Handle ESD-sensitive circuit cards only after attaching a wrist strap to
your bare wrist. Attach the other end of the wrist strap to a ground that
terminates at the system ground, such as any unpainted metallic chassis
surface.
■ Handle a circuit card by the faceplate or side edges only (Figure 4-2 and
Figure 4-3
).
!
CAUTION:
Ensure that your palm is not in contact with the non-component side
of the board.
ATTENTION
OBSERVE PRECAUTIONS
FOR HANDLING
ELECTROSTATIC
SENSITIVE
DEVICES