Installation guide

22
Upgrading System Memory in Cisco 3600 Series Routers
78-3636-05
Replacing DRAM and SDRAM
Figure 9 Installing DRAM SIMMs
Step 5 Ensure that each SIMM is straight (perpendicular to the socket), and that the alignment holes (see
Figure 9) line up with the plastic socket guides on the socket.
Caution It is normal to feel some resistance when installing a SIMM, but do not use excessive force on the SIMM,
and do not touch the surface components.
Step 6 Repeat Step 3 through Step 5 for each SIMM.
Step 7 Proceed to the “Replacing the Cover (Cisco 3620, Cisco 3631, Cisco 3640)” section on page 33.
SDRAM DIMMs (Cisco 3631 and Cisco 3660 Routers)
SDRAM DIMM Location and Orientation
Figure 10 or Figure 11 shows the SDRAM DIMM locations in your router.
H7037
1. Insert the SIMM into the socket
at an angle from vertical.
The socket guide posts fit through
the holes in the SIMM.
3.
The locking springs clip the back
of the SIMM.
4.
View from front of chassis
2. Push the top of the SIMM
down and back.