Installation guide

Upgrading System Memory in Cisco 3600 Series Routers

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Replacing DRAM and SDRAM

Figure 8 Removing DRAM SIMMs

Step 4 Hold the SIMM 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 Repeat Step 3 and Step 4 for each SIMM.

Step 6 Install the new SIMMs as described in the next section “Installing DRAM SIMMs.”

Installing DRAM SIMMs

Follow these steps to install DRAM SIMMs:

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 DRAM SIMM sockets. (See Figure 5 or Figure 6.)

Caution Handle the SIMM by the nonconnector edges only; do not press on the center. Handle carefully. SIMMs

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

Step 3 Hold the SIMM with the polarization notch on the right, near the front of the chassis, and with the

connector edge at the bottom.

Step 4 Beginning with bank 0, insert the SIMM into the socket at an angle, tilted toward the right side of the

chassis. Rock the SIMM into a vertical position (see Figure 9) using the minimum amount of force

required. When the SIMM is properly seated, the socket guideposts fit through the alignment holes, and

the locking spring clips click into place.

2. Push the top of the

SIMM forward and down.

1. Pull the locking spring clips outward.

SIMM

polarization

notch

Top view

Front of chassis

H7038