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 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 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.