Allied Telesis AT-AR021 BRI-U Manuale di installazione e sicurezza - Pagina 4
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4
Installing a PIC
This section describes the procedure for installing a PIC. Follow the same
procedures, in particular the safety procedures and warnings, to replace or remove
a PIC.
1. Read the safety information.
For safety information, see the Installation and Safety Guide for your switch or
router. A copy of this guide can be found on the CD-ROM that came with your
switch or router, or at
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
AR020, AR021 and 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 AR040 NSM if required.
Use the installation instructions in the Network Service Module Installation and
Safety Guide to install an 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.
613-000601 Rev A
www.alliedtelesis.com/support/software/
Port Interface Card
.