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Maintaining the Cisco 12008 7-87
Upgrading Memory on a Line Card
Step 5 As one end of the DIMM is released, grasp the top corners of the DIMM with
the thumb and forefinger of each hand and pull the DIMM completely out of its
socket.
Note Handle the DIMM only by its top corners; do not touch the memory chips
or the keyed insertion fingers along the bottom of the DIMM (see Figure 7-32).
Step 6 Immediately place the module in an antistatic bag to protect it from ESD
damage.
Repeat Step 4 through Step 6 for any remaining DIMMs that you want to remove.
Note If you are upgrading buffer memory, both DIMM sockets of a given pair (either the
transmit buffer or the receive buffer) must be populated with an SDRAM DIMM of the
same size.
Proceed to the following section to install new DIMMs in the line card.
Installing a New DIMM on a Line Card
To install new DRAM or SDRAM DIMMs in the Cisco 12008, perform the following steps:
Step 1 Put on an antistatic wrist strap and attach the equipment end of the strap to the
bare metal surface of the line card carrier.
Step 2 Remove the new DIMM from its protective antistatic bag.
Step 3 Grasp the DIMM only by its top corners; do not touch the memory chips or the
keyed insertion fingers along the bottom edge of the DIMM.
Step 4 To position the DIMM for insertion, orient it at the same angle as the DIMM
socket. Note the two notches (keys) on the bottom edge of the module. These
keys ensure proper registration of the DIMM in the socket.