Installation Instructions

1X UBS Macro B T S FRU 220 V AC P ower Supply Module (PSM) Shelf

Procedure 10 -4 Installing the replacement 220 V AC PSM shelf (Continued)

Using a ﬂat blade screwdriver , turn the ground terminal screw counter clockwise (CCW)

until the terminal is fully open. Insert the earth ground wire into the ground terminal.

Turn the ground terminal screw clockwise (CW) to close the terminal and secure the wire.

Tighten the terminal screw to 4.0 - 4.5 N-m (35 - 40 in-lb).

1 1

Place the cover box, with conduit attached, in position over the AC input terminal block.

Insert the 4 screws to secure the cover box to the PSM shelf . Ensure that the wires are not

pinched.

Using a TORX T20 bit and driver , tighten the 4 screws to 1.6 - 1.8 N-m (14 - 16 in-lb).

Connect the back -up battery cable (if used) the +27 V DC output power connector on the

rear of the 220 V AC PSM shelf by mating the orange connectors.

Connect the +27 V DC output power cable on the rear of the PSM shelf to the +27 V DC

input power cable on the rear of the PDU by mating the orange connectors.

P ower up the 220 V AC UBS Macro BTS frame according to the section: P ower-up the

Frame on page 2- 3 .

Observe the LEDs on the front of the PSMs.

The green LED should be on and the red LED should be off . This indicates normal operation.

There is no optimization required for the PSM shelf 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 .

68P09283A64 -3 10 -15

FOA SEP 2007