Opening the Chassis
This section describes the procedure for opening the chassis by removing the chassis cover.
Warning Do not touch the power supply when the power cord is connected. For systems with a 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 publication.)
Tools Required
You will need the following tools to open the chassis:
Medium-size flat-blade screwdriver (1/4 inch [0.625 cm])
●
Size M 3.5 (metric) hex-head nut driver (optional)●
Removing the Chassis Cover
You must open the chassis to access its interior components. When opening the chassis, refer to Parts A and B
in Figure B-1.
Warning Before opening the chassis, disconnect the telephone-network cables to avoid contact with
telephone-network voltages. (To see translated versions of this warning, refer to the Regulatory
Compliance and Safety Information publication.)
Take the following steps to remove the chassis cover:
Step 1 Power OFF the router.
Step 2 Disconnect all cables from the rear panel of the router.
Step 3 Turn the unit upside down so that the top of the chassis is resting on a flat surface, and the front of the
chassis is facing toward you. (See Figure B-1, Part A.)
Step 4 Remove the single screw located on the bottom of the chassis (on the side closest to you). Note that the
chassis is comprised of two sections: top and bottom.
Step 5 If required, insert a medium-size flat-blade screwdriver into the slots shown in Figure B-1, Part A, and
gently rotate the blade so that the top and bottom sections separate slightly.
Step 6 Holding the chassis with both hands, position it as shown in Figure B-1, Part B.
Step 7 Pull the top section away from the bottom section. (See Figure B-1, Part B.) The fit is very snug, so it
may be necessary to pry the chassis sections apart at one end and then the other until they separate.
Figure B-1: Chassis Cover Removal
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520mnt.htm (2 of 7) [10/27/2000 3:08:02 PM]
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