Nortel Passport 15000, Hardware Installation And Maintenance, Page: 650 / 874

650 Chapter 17 Hardware procedures
241-1501-240 5.2S2
Preparing the NEBS 2000 frame for installing adapter
brackets
Prepare the NEBS 2000 frame to accommodate installing NEBS 2000 frame-
to-EIA adapter brackets.
Prerequisites
• You must be familiar with “Safety considerations and best practices”
(page 53).
• The NEBS-to-EIA adapter brackets are required to mount 19-inch wide
equipment onto the 21-inch wide NEBS 2000 frame.
Procedure steps
1 When a NEBS 2000 frame has a Passport 15000 or 20000 switch
installed in it, cable management brackets are installed on the front of the
frame uprights, on the side of the uprights near the front, or both. If any
brackets are on the front surface of the frame uprights, record their
location and whether their arms point frontwards or rearwards.
2 While facing the front of the switch, unfasten the pairs of thread-forming
10-mm (3/8-in.) hex-head screws of the top 3 brackets on each side of the
frame.
3 Put the screws and brackets aside to be re-installed later.
4 On the front of the NEBS 2000 frame, locate the first screw hole or dimple
above the mounting ear of the air-flow grill. The air-flow grill is located
immediately above the Passport 15000 or 20000 cooling unit.
5 Locate any cable management brackets at the rear of the frame. Record
the location and whether the arms point forwards or rearwards of any
bracket in the top half of the frame.
6 Unfasten the 10-mm (3/8-in.) screws of the cable brackets on the back of
the frame.
7 Put the screws and brackets aside to be re-installed later.