Product Info

1X UBS Macro B T S FRU Break er Module Assembly (BMA)

Procedure 9 -4 Installing the replacement BMA (Continued)

• Properly position the replacement BMA on the PDU output bus bars.

• Align the BMA screw holes with the appropriate screw holes on the PDU output bus

bars.

• Insert the mounting screws.

• Using a TORX T25 driver , tighten all BMA mounting screws to 4.8 N-m (42.25 in-lb).

Reattach the PDU front panel cover to the PDU as follows:

• See Figure 9-1 PDU Front P anel Removal/Installation Detail on page 9- 12 .

• Align the PDU front panel cover with the PDU circuit breaker actuators and power

connectors while inserting the PDU front panel cover latch tabs into the retainer on

the left and right front ends of the PDU .

• Slide the PDU front panel cover onto the front of the PDU .

• Firmly press on the ends of the PDU front panel until each end tab snaps into place.

Set all PDU front panel circuit breakers to the off (pulled out) position.

Reconnect all applicable cables to the PDU front panel connectors. Make sure that each

cable is connected to the proper PDU front panel power connector .

P ower up the UBS Macro BTS frame according to the section: P ower-up the Frame on

page 2- 3 .

There is no optimization required for the BMA replacement.

A T THE OMCR

Restore site signaling operations according to Procedure 3-3 Restore site signaling

operations procedure for a packet BTS on page 3- 10 .

Reference diagrams

Figure 9 -1 shows details for removing and installing the PDU front cover . Figure 9 -2 shows

BMA mounting details.

68P09283A64 -3 9 -11

FOA SEP 2007