Cisco 3620 Installation Guide download pdf (Page 14)

14 Cisco 3600 Series Memory Upgrade Conﬁguration Note

Upgrading Flash Memory

Step 3 Beginning with bank 0, insert the SIMM into the connector slot at an angle, tilted toward

the right side of the chassis. Rock the SIMM into a vertical position (see Figure 8), using

the minimum amount of force required. When the SIMM is properly seated, the socket

guide posts ﬁt through the alignment holes, and the connector springs click into place.

Step 4 Ensure that each SIMM is straight and that the alignment holes (as shown in Figure 7)

line up with the plastic guides on the socket.

Figure 8 Installing DRAM SIMMs

Caution

It is normal to feel some resistance, but do not use excessive force on the SIMM, and do

not touch the surface components.

Step 5 Repeat Step 2 through Step 4 for each SIMM.

If you are ﬁnished replacing SIMMs, continue with the “Replacing the Cover” section on page 21.

Upgrading Flash Memory

Cisco 3600 series routers contain one or two 80-pin Flash-memory SIMMs for storing the system

software image. These SIMMs are not interchangeable with DRAM SIMMs. You can upgrade Flash

memory by replacing an existing SIMM with a SIMM that has greater capacity, or by adding a

SIMM to the second Flash-memory socket.

SIMMs are manufactured with a polarization notch to ensure proper orientation and alignment holes

to ensure proper positioning, similar to those shown in Figure 9. Cisco 3600 series Flash SIMM

cards are installed with the connector edge down, the polarization notch near the front of the chassis,

and the component side facing the right side of the chassis.

H7037

1. Insert the SIMM into the socket

at an angle from vertical.

The socket guide posts fit through

the holes in the SIMM.

The locking springs clip the back

of the SIMM.

View from front of chassis

2. Push the top of the SIMM

down and back.

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Cisco 3620 Installation Guide Page 14