Installation Instructions

R20 1X UBS Macro B T S Hardw are Installation Adding a third PSM (–48 V or 220 V AC only)
Procedure
Procedure 3 -6 contains the steps for adding a third PSM to the PSM shelf .
Procedure 3 -6 Adding a 3rd PSM to the PSM shelf
1
Use a T25 TORX bit and driver to completely loosen the captive retaining
thumbscrew on the filler plate that covers slot 3 of the PSM shelf . Remove
the filler plate.
2
PSM weighs appro ximately 5 kg. Be careful when handling the PSM
to prev ent damage to the equipment and personal injury .
Install the appropriate PSM into PSM shelf slot 3 as follows:
1. Grasp the handle on the front panel of the PSM with one hand while
carefully supporting the bottom of the module with the other hand.
2. Properly orient the PSM and insert it into the slot.
3. 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.
3
Using a T25 TORX bit and torque driver , tighten the captive retaining
thumbscrew to 2.37 N-m (21 in-lb).
68P09283A62 -3 3 -21
PRELIMINARY A UG 2007