Accessing The Mainboard - Cisco 3600 Series Installation Manual

Accessing the Mainboard

Accessing the Mainboard
This section describes how to open the system in order to access the router's internal components such
as memory modules and the ROM. You need a number 2 Phillips or flat-blade screwdriver to perform
this procedure.
Do not touch the power supply when the power cord is connected. For systems with a power
Warning
switch, line voltages are present within the power supply even when the power switch is OFF and
the power cord is connected. For systems without a power switch, line voltages are present
within the power supply when the power cord is connected. To see translations of the warnings
that appear in this publication, refer to the Regulatory Compliance and Safety Information
document that accompanied this device.
Before performing any of the following procedures, ensure that power is removed from the DC
Warning
circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services
the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the
circuit breaker in the OFF position. To see translations of the warnings that appear in this
publication, refer to the Regulatory Compliance and Safety Information document that
accompanied this device.
Removing the Cisco 3620 or Cisco 3640 Router Cover
Use the following procedure to remove the cover:
Power OFF the router. However, to channel ESD voltages to ground, do not unplug the power cable.
Step 1
Before opening the chassis, disconnect the telephone-network cables to avoid contact with
Warning
telephone-network voltages. To see translations of the warnings that appear in this publication,
refer to the Regulatory Compliance and Safety Information document that accompanied this
device.
Remove all network interface cables from the rear panel.
Step 2
Place the router so that the front panel is facing you. Remove the three screws located on top of the cover
Step 3
near the front edge. (See
Lift the front edge of the cover until it clears the front of the chassis. (See
Step 4
Pull the cover toward you until the metal tabs on the rear edge separate from the chassis bottom. (See
Step 5
Figure 5-1
Lift the cover until it is free from the chassis and set it aside.
Step 6
When you are ready to replace the cover, see the
Router" section on page
Cisco 3600 Series Hardware Installation Guide
5-2
Figure 5-1 or
or Figure 5-2.)
5-30.
Figure 5-2.) Set the screws aside in a safe place.
"Replacing the Cover on a Cisco 3620 or Cisco 3640
Chapter 5 Installing Memory in the Router
Figure 5-1 or Figure 5-2.)
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