Cisco Systems AS5350XM ユーザーズマニュアル

This appendix contains procedures on how to replace memory components in the Cisco AS5350XM 
universal gateway field-replaceable units. The appendix contains the following sections: 

This section describes how to open the chassis by removing the chassis cover.

You need the following tools:

Medium Phillips screwdriver 

Small or medium flat-blade screwdriver

Note the following safety recommendations:

Before opening the unit, disconnect the telephone-network cables to avoid contact with 
telephone-network voltages. Statement 1041

Do not work on the system or connect or disconnect cables during periods of lightning activity. 
Statement 1001