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COMSPHERE 3000 Series Carrier
3-10 December 1994 3000-A2-GA31-80
Power Transformer Unit
Installation
The carrier derives its low voltage ac power from the
power transformer unit mounted at the bottom of the
carrier.
Preinstallation Inspection
Check the unit for physical damage. Ensure that the
unit has not been damaged, possibly causing a short
circuit of internal components. If the power transformer
unit shows signs of shipping damage, report this
immediately to your shipping representative and also to
your AT&T Paradyne representative. Otherwise, tighten
any screws that may have worked loose with a
screwdriver and proceed with the installation.
If an SDCP is to be installed in the carrier, inspect the
SDCP and its cable at this time, as well, and report any
damage.
Installation
If installing an SDCP in the carrier, the ribbon cable
that provides power to the SDCP must be installed before
the power transformer unit is installed.
SDCP Ribbon Cable Installation
To install the SDCP ribbon cable:
Procedure
1. Decide on the most convenient height for the
SDCP. This is usually at eye level (probably the
second or third carrier from the top of the cabinet).
2. Remove the cover plate from the selected carrier
by unscrewing the four captive screws
(Figure 3-1).
3. At the front of the carrier (Figure 3-6), slide the
fan module straight out and set it aside.
Figure 3-6. Power Transformer Unit Installation