Cisco 3600 Series Configuration Note - Page 14

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Cisco 3600 Series Configuration Note

Upgrading Flash Memory

Figure 8
View from front of chassis
Caution
not touch the surface components.
Step 5
If you are finished replacing SIMMs, continue with the section "Replacing the Cover" later in this
document.
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 the existing 4-MB SIMM with an 8-MB SIMM 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.
Figure 9
14 Cisco 3600 Series Memory Upgrade Configuration Note
Installing DRAM SIMMs
1. Insert the SIMM into the socket
at an angle from vertical.
2. Push the top of the SIMM
down and back.
3.
The socket guide posts fit through
the holes in the SIMM.
4.
The locking springs clip the back
of the SIMM.
It is normal to feel some resistance, but do not use excessive force on the SIMM, and do
Repeat Step 2 through Step 4 for each SIMM.
Flash-Memory SIMM Orientation and Alignment
Alignment holes
Connector edge
Polarization notch