Nortel Meridian 1 Hardware Replacement Manual page 239

Replacing an NT7D10 PDU with an NT7D67CB PDU
a. Connect the green frame ground wire from the PDU to the frame
ground bolt inside the pedestal.
b. Guide the power cable connector through the hole in the top of the
pedestal. Set the PDU in the pedestal and tighten the three
screws that secure it to the pedestal.
5 Install the NT7D10CA system monitor assembly:
a. Connect the small orange connectors (J2 on the PDU, P2 on the
system monitor assembly) on the left side of the PDU.
b. Connect the flat white connector to the small circuit board (P1 on
the PDU, J1 on the system monitor assembly) on the right side of
the PDU.
c. Connect the ribbon cable (set aside when the NT7D10 PDU was
removed) to the system monitor (J2). Guide the connector on the
other end of the cable through the hole in the top of the pedestal
and connect it to module 0.
d. Gently push the system monitor assembly into the pedestal.
6 Tighten the screws that secure the system monitor assembly.
7 Reconnect the cables from module 0:
a. Reconnect the large orange power connector (J1).
b. Replace the I/O safety panel.
c. Replace the rear cover on the module.
8 Reconnect all external wiring to the terminal block on the PDU (see
Figure 43 on page 240):
a. Remove the plastic safety cover over the terminal block.
b. Connect the red BAT (–48 V) wires:
— for modules 0 and 1 connect to the BAT 0,1 terminal
— for modules 2 and 3 connect to the BAT 2,3 terminal
c. Connect the black BATRTN (48 V return) wires:
— for modules 0 and 1 connect to the BATRTN 0,1 terminal
— for modules 2 and 3 connect to the BATRTN 2,3 terminal
d. Connect the orange (or white) wire from the ground bus/LRE in
the power plant to the LRTN terminal.
Page 239 of 250
Hardware Replacement