Nortel Meridian 1 Replacement Manual page 155

Figure 14
NT7D67CB Power Distribution Unit DC
NT7D67CB
BLO CB
0
Circuit
breakers
4 Unseat the blower unit in the front of the pedestal:
— Remove the grill on the front of the pedestal. Set the toggle switch
on the front of the unit to OFF (left).
— Turn the screws on the front of the unit counterclockwise and pull it
forward several inches (you will see the L-bracket on the rear of the
unit) until the connector disengages from the rear of the PDU.
Do not pull the blower unit out of the pedestal. The unit is heavy and
the blades on the blower may still be rotating up to 2 minutes after the
power is turned off.
System monitor/power supply assembly
J3 J5 J6
CB
1
Filter / Power distribution unit assembly
Replacing equipment
WARNING
J4
Safety cover—the
field terminal block
is behind the cover
Page 155 of 362
NT7D10CA
FLTR / PWR DIST
UNIT ASSY
CB CB
2 3
Circuit
breakers
553-5488
Hardware replacement