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Cisco 3600 Series Hardware Installation Guide
OL-2056-02
Chapter 5 Installing Memory in the Router
Replacing the ROM
Figure 5-18 Inserting Flash Memory 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 to avoid damaging them.
Step 4 Check the alignment of each SIMM to make sure that it is straight and that the alignment holes are lined
up with the plastic socket guides.
Step 5 When you finish replacing Flash memory SIMMs, and have installed all internal components, proceed
to either of these sections:
• Replacing the Cover on a Cisco 3620 or Cisco 3640 Router, page 5-30
• Replacing the Cisco 3660 Mainboard Tray, page 5-33
Replacing the ROM
Cisco 3620, Cisco 3640, and Cisco 3660
To upgrade the router ROM software to a new ROM monitor version, you must replace the existing
ROM.
You will need the following tools:
• ROM extraction tool or a small flat-blade screwdriver
• Needlenose pliers
• One 32-pin plastic leaded chip carrier (PLCC) for removing the ROM chip from the Cisco 3660
mainboard
H7084
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.