Zhone MXK, Руководство по установке оборудования

Страница: 47 / 78

Install the MXK
MXK Hardware Installation Guide
47
20
Turn on the power to power supply A (and to power supply B, if present).
The system is now live and ready to initialize the slot cards as they are
installed. In the absence of any slot cards, there is no activity on the system.
The power A and power B LEDs on the front panel of the unit should be solid
green, indicating power is normal. For information on the chassis LEDs, see
Read the LEDs on page 63 .
Connect power to the rear of the MXK 823 and
ground the chassis
Power on the MXK 823 chassis is located on both the front of the chassis and
the rear of the chassis. This section describes connecting power to the rear of
the chassis.
To provide redundant power supplies and easy access, two terminal blocks,
side A and side B, are located at the chassis rear. To provide additional
redundancy each terminal block contains four terminals, two RTN for positive
wires and two –48 DC for negative wires. Located near each terminal block is
a stud used to connect the ground wire cable and an on/off switch for the
power.
Figure 20 displays the location and contents of the terminal blocks.
For the procedure on connecting the wiring between the MXK terminal block
and the power supplies on the front of the MXK chassis, see
Connect power to
the front of the MXK and ground the chassis on page 42 .
Figure 20: Terminal blocks on the rear of the MXK chassis
A
RTN
-48VDC
OFF
O
FF
O
FF