Chassis Cover Removal; Appendix A Replacing Memory Component - Cisco AS5350XM Installation Manual

Removing the Chassis Cover
Before working on a chassis or working near power supplies, unplug the power cord on AC units;
Warning
disconnect the power at the circuit breaker on DC units. Statement 12
NVRAM in the universal gateway uses an internal lithium battery to maintain data. Although this is not
a field-serviceable component, we are required to provide the following safety warnings:
Warning There is the danger of explosion if the battery is replaced incorrectly. Replace the battery only with
the same or equivalent type recommended by the manufacturer. Dispose of used batteries according
to the manufacturer's instructions. Statement 1015
Before working on equipment that is connected to power lines, remove jewelry (including rings,
Warning
necklaces, and watches). Metal objects will heat up when connected to power and ground and can
cause serious burns or weld the metal object to the terminals. Statement 43

Chassis Cover Removal

You must open the universal gateway chassis to gain access to its interior components: boot read-only
memory (ROM) software, synchronous dynamic random-access memory, dual in-line memory (SDRAM
DIMMs) modules. (When you replace the boot ROM, you must also remove all feature cards in the
chassis.)
To remove the chassis cover, follow this procedure:
Step 1 Turn the power switch on the universal gateway off and disconnect site power.
Remove all interface cables from the rear panel of the universal gateway.
Step 2
Place the gateway so that the front panel is facing you.
Step 3
Remove the five screws on the chassis cover, as shown in
Step 4
Cisco AS5350XM Universal Gateway Chassis Installation Guide
A-2
Appendix A Replacing Memory Components
Figure A-1.
OL-6417-02