Installation and Troubleshooting 2- 3
If any of these it e ms ar e d amaged or missing, contact your local supplier or
a 3Com service representative.
3Com suggests you keep the ca rton and anti-static shielding ba g in which
your unit was shipped in case y ou later want to repackage the un it for
storage or shipment.
We also suggest that you re cord the serial number of your Controller
Module. We have provi ded a log for this and other information specific to
modules under the Slot Usage Chart in Appendix B nea r the end of this
manual.
FCC Regulations
FCC regulations require that b lank faceplates cover slots that are not being
used. To comply with this regulation , the concentrator is shipped with 15
blank faceplates and two empty slots. These two slots are left empty
because the ONlin e Con tro ller Modu le an d at l ea st one media mo dule m ust
be installed for the concentrator to be functi onal.
Caution: Do not turn the conc entrator's power supply swi tch on
until you have:
❑verified that the selected site meets the installation requirements
outlined in the following pages
❑completed each of the steps o utlined in Table 2-1.
– Be sure to verify that the correct voltage level ha s be en
selected. An improper se tting may damage the po wer
supply.