Cisco 3600 Series Note de configuration - Page 5

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Do not touch the power supply when the power cord is connected. For systems with a

Warning

power 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 translated versions of this

warning, refer to the Regulatory Compliance and Safety Information document that accompanied the

router.)

The following warning applies to routers with DC power supplies:

Before performing any of the following procedures, ensure that power is removed from

Warning

the DC 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 translated versions of this warning, refer to the

Regulatory Compliance and Safety Information document that accompanied the router.)

Follow this procedure to remove the chassis cover:

Turn OFF power to the router.

Step 1

Before opening the chassis, disconnect the telephone-network cables to avoid contact

Warning

with telephone-network voltages. (To see translated versions of this warning, refer to the Regulatory

Compliance and Safety Information document that accompanied the router.)

Warning

Do not work on the system or connect or disconnect cables during periods of lightning

activity. (To see translated versions of this warning, refer to the Regulatory Compliance and Safety

Information document that accompanied the router.)

Remove all network interface cables from the rear panel.

Step 2

If the router is rack- or wall-mounted, remove it from the rack or wall.

Step 3

Place the router so the front panel is closest to you. Remove the three screws located on

Step 4

top of the cover near the front edge. (Figure 2 shows these screws for the Cisco 3620

cover, and Figure 3 shows the screws for the Cisco 3640 cover.) Set the screws aside in a

safe place.

Lift the front edge of the cover about 1 inch (2.5 cm) above the chassis, as shown in

Step 5

Figure 1.

Cisco 3600 Series Memory Upgrade Configuration Note

Removing the Cover