Allied Telesis AT-AR020 PRI EI/TI, AT-AR027VOLP-FXS, AT-AR021 (S)BRI-S/I manual Installing a PIC

Installation and Safety Guide 5

Installing a PIC

This section describes the procedure for installing a PIC. You should also follow this procedure, in particular the safety procedures and warnings, when replacing or removing a PIC.

Caution You cannot install PICs into an AT-AR040 NSM that has power applied to it. This includes NSMs that have been deactivated using the hot swap button, but not physically removed from the switch or router. To ensure that all power is removed from the NSM bay, you must either physically remove it from the switch or router using the hot swap method, or disconnect all power sources to the switch or router.

1.Read the safety information.

For safety information, see the Installation and Safety Guide shipped with your switch or router. You can also download the complete documentation for your switch or router from www.alliedtelesis.com/support/software/.

2.Gather the tools and equipment you will need.

A medium-sized flat-bladed screwdriver may be useful when loosening the PIC thumbscrews. You should also have any cables required for connecting the PIC to a wide area network or other network devices.

3.Remove power to the switch or router.

Warning Do not install a PIC into an NSM bay or PIC bay base unit without first removing power from the switch or router. Be sure to disconnect both the main power supply and any attached redundant power supply. Installing a PIC with the switch or router powered ON can damage the PIC, NSM and base unit.

4.Remove all TNV connections to existing PICs.

Warning Remove any cables attached to the external WAN ports of the AT-AR020, AT-AR021 and AT-AR027 PICs, as these supply TNV into the switch or router. Dangerous voltages may be present on some parts of the board, even if the switch or router is powered OFF.

5.Install the AT-AR040 NSM if required.

Use the installation instructions in the Network Service Module Installation and Safety Guide to install an AT-AR040 NSM.

6.Remove the PIC bay faceplate, NSM PIC bay faceplate, or existing PIC.

Loosen the thumbscrews to remove the faceplate or PIC. Keep the faceplate for future use. If you remove the PIC, replace the faceplate to prevent dust and debris from entering the switch or router and to maintain proper airflow.