Installation guide

Upgrading System Memory in Cisco 3600 Series Routers

78-3636-05

Replacing DRAM and SDRAM

Step 1 Attach an ESD-preventive wrist strap and ensure that it makes good contact with your skin. Connect the

equipment end of the wrist strap to the metal back plate of the chassis, avoiding contact with the

connectors.

Step 2 On the mainboard, locate the SDRAM DIMM sockets. (See Figure 10 or Figure 11.)

Caution Handle the DIMM by the nonconnector edges only; do not press on the center. Handle carefully. DIMMs

are ESD-sensitive components and can be damaged by mishandling.

Step 3 Remove the DIMM by pushing the locking spring clips on both sides outward. This ejects the DIMM

from its socket. (See Figure 14.)

Figure 14 Removing and Installing SDRAM DIMMs

Step 4 Hold the DIMM by the edges with your thumb and index finger and lift it out of the socket. Place it in

an antistatic bag to protect it from ESD damage.

Step 5 If necessary, repeat Step 3 and Step 4 for the other DIMM.

Step 6 Install the new DIMMs as described in the “Installing SDRAM DIMMs” section on page 25.

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Locking spring clips