6 Cisco 12012 Gigabit Switch Router Switch Fabric Cards Replacement Instructions
Tools and Parts Required
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which can occur when electronic boards or components are
handled improperly, can result in intermittent or complete failures.
Following are guidelines for preventing ESD damage:
• Always use an ESD-preventive wrist strap or ankle strap and ensure that it makes good skin
contact.
• When removing or installing a component, connect the equipment end of a ground strap to one
of the two ESD connection sockets on the front edge of the upper card cage or to bare metal on
the frame.
• If you are returning a replaced component to the factory, immediately place it in a static shielding
bag to avoid ESD damage.
• The wrist strap only protects the board from ESD voltages on the body; ESD voltages on clothing
can still cause damage.
Caution For safety, periodically check the resistance value of the antistatic strap. The measurement
should be between 1 and 10 megohms.
Tools and Parts Required
You need the following tools and parts to install or replace a clock and scheduler card or switch
fabric card:
• 1/4-inch flat-blade screwdriver
• ESD-preventive wrist strap.
• The replacement card, either a clock and scheduler card (Product Number GSR12-CSC=) or a
switch fabric card (Product Number GSR12-SFC=)
