Nortel Meridian 1 Hardware Replacement Manual page 236

Page 236 of 250
553-3001-520 Standard 17.00 January 2002
Replacing an NT7D10 PDU with an NT7D67CB PDU
c. Disconnect the system monitor ribbon cable from the PDU and
from the module and set it aside for reconnection with the
replacement NT7D67CB PDU.
d. Disconnect the large orange power connector (J1) from the PDU.
Note: To disconnect the power plug, you must press a latch trip on the
front and rear of the plug. You may need to use a screwdriver blade
against the latch trip on the front of the plug.
7 Tag and disconnect cables to the NT8D22 System Monitor card.
Loosen the two screws on the card faceplate and remove it.
8 Remove the six screws that position the NT7D10 PDU. Carefully pull
the unit straight out and set it on the floor next to the pedestal (see
Figure 41 on page 237)
CAUTION
Damage to Equipment
The PDU cannot be completely removed from the
pedestal until wires to the field wiring terminal block
are disconnected. Label wires carefully. Improper
wiring can cause system damage.
9 Tag and then disconnect all wiring to the field wiring terminal block.
10 Locate the frame ground wire from the field wiring terminal block to the
frame ground bolt inside the pedestal. Disconnect this wire at the
ground bolt.
11 Remove the field wiring terminal block:
a. Remove the cover over the terminal block.
b. Remove the four screws that secure the terminal block and lift it
out of the pedestal.
12 Move the NT7D10 PDU out of the work area.