Product Info

1X UBS Macro B T S FRU P ower Supply Modules (PSMs)
Procedure 10 -5 R eplacing a PSM (Continued)
4
PSM weighs appro ximately 5 kg. Be careful when handling the PSM to prev ent
damage to the equipment and personal injury .
Grasp the handle on the front panel of the PSM with one hand. Slowly pull the PSM out of
the shelf slot while carefully supporting the bottom of the module with the other hand.
5
Properly orient the replacement PSM and insert it into the slot. Slowly
slide the module into the shelf until the rear connectors are fully seated.
Make sure that the PSM is fully engaged with the shelf backplane slot connectors.
6
Using a T25 TORX bit and torque driver , tighten the captive retaining thumbscrew to 2.37
N-m (21 in-lb).
7
Observe the LEDs on the PSM.
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 replacement.
8
Notify the OMC–R operator that the procedure is complete and that alarms should be cleared.
9
OMC–R operator execute “DISABLE EVENTS” command to discontinue monitoring of alarms.
68P09283A64 -3 10 -25
SEP 2007 FOA