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Cisco FlexWAN and Enhanced FlexWAN Modules Installation Guide
OL-8357-01
Chapter 1 Installing the FlexWAN and Enhanced FlexWAN Modules
Preparing to Install the FlexWAN or Enhanced FlexWAN Module
Follow these guidelines for preventing ESD damage:
•
Always use an ESD wrist or ankle strap, and ensure that it makes maximum contact with the skin.
Make sure that the wrist or ankle strap is in contact with bare skin.
•
Avoid contact between the printed circuit boards and clothing. The wrist strap only protects
components from ESD voltages on the body; ESD voltages on clothing can still cause damage.
•
The disposable ESD grounding strap supplied with field replaceable units (FRUs) has a metal clip
at one end. Attach the metal clip (equipment end of the strap) to an unfinished (bare metal) chassis
surface.
•
The Catalyst 7600 series chassis also has a built-in ESD grounding connector. This is a banana plug
connector and is identified by the ground symbol next to the connector. See
for an
example of a chassis ESD wrist strap connection.
•
When installing a component, use any available ejector levers or captive installation screws to
properly seat the bus connectors in the backplane or midplane. These devices prevent accidental
removal, provide proper grounding for the system, and help to ensure that bus connectors are
properly seated.
•
When removing a component, use any available ejector levers or captive installation screws to
release the bus connectors from the backplane or midplane.
•
Handle carriers by available handles or edges only; avoid touching the printed circuit boards or
connectors.
•
Place a removed component board-side-up on an antistatic surface or in a static shielding container.
If you plan to return the component to the factory, immediately place it in a static shielding
container.
•
Never attempt to remove the printed circuit board from the metal carrier.
Caution
For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 megohms (Mohm).
Figure 1-1
Example of Chassis ESD Wrist Strap Ground
113742
o
o
PS1
PS2
FAN
LINK
SLOT 2
SLOT 1
PCMCIA
EJECT
AUX
CONSOLE
Enet
RX
TX
RESET
SWITCH/PROCESSOR
TX
UT
P3
UT
P3
UT
P3
UT
P3
RX
UTP
TX
RX
TX
RX
TX
RX
0
1
2
3
TX
UT
P3
UT
P3
UT
P3
UT
P3
RX
UTP
TX
RX
RX
TX
RX
0
1
2
3
ESD wrist strap
ESD ground strap
connector
