Zhone IMACS 8000, User Manual

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Reference Guide 2-7
System Installation Power Supplies and Ringing Generators
2.4.4 Installing the System Power Cards
Next, install power supplies, AC-to-DC power converters and ringing generators into the
system chassis as described in this section. However, do not apply power to the system until
you finish installing these cards, AND after making the power and ground connections to the
chassis as described in the next section of this chapter.
CAUTION!
Failure to follow the procedures mentioned above will result in damaging the boards.
2.4.5 Talk Battery Supply Fuses
The talk battery fuses for the DC Power Supply are in removable cartridges next to the DC
input socket on the rear panel. They are only for external power supplied to the V
N
leads and
are not to the power supplied by the AC-DC converter. The power supply should have a 5Amp
fuse on it. Refer to the system specifications section in this manual
2.4.6 AC Power Supply and DC Power Supply Fuses
The AC power supply and DC Power Supply fuses are built in to the supplies. When
unpacking the unit, an AC power cord will be in the box. The AC inlet connector is located in
the front or rear of the chassis. Refer to the system specifications section in this manual
2.4.7 Installing AC or DC Power Supplies
To install the AC or DC power supply in a chassis, first remove the rear panel covering the
power slot. Then, hold the power supply by its metal handle and align the printed circuit board
(PCB) edges with the rail guides of either power supply slot (F1 or F2). Push the unit in until
it is firmly seated in the backplane connector. For redundant power supplies, also insert a
second AC or DC power supply into the adjacent slot.
When the AC or DC power supply is installed and power is applied, the green LED on the
front panel of the power supply should light. A problem exists if this LED does not light.
Verify that the power supply is properly seated in the connector. Also check the external power
source and connections to the power supply. If the power supply is properly seated, and the
external power source and power connections are operational, replace the power supply.
Replace the rear panel cover.