Nortel Networks BCM200/400 - Manual (Page 243)

Chapter 20 Preparing hardware for maintenance or upgrades 243
BCM200/400 4.0 Installation and Maintenance Guide
To remove the base function tray
1 Shut down the system (see “Performing a system shutdown” on page 239 ).
2 Disconnect the BCM system from the AC power outlet.
3 Disconnect any connectors from the front of the base function tray.
4 Attach one end of the grounding strap to your wrist and the other end to a grounded metal
surface.
5 Remove the main unit top cover. Refer to “Removing the main unit top cover” on page 252 .
6 Remove the base function tray latch screws and place them in a safe location.
7 Move the base function tray latches to the unlocked position. See Figure 107 .
8 Grasp the base function tray latches and partially remove the base function tray from the main
unit. Do not exert force on the DS30 cables or connectors.
9 Disconnect the DS30 cable connectors from the media services card. If necessary, remove the
WAN card to access the DS30 cables, see
“To remove the WAN card” on page 309 .
Figure 107 Remove the base function tray
10 Remove the base function tray completely from the main unit. Remove the base function tray
carefully to prevent damage to the cables and connectors.
11 Place the base function tray on a flat, clean, and static-free surface.
Slide base function tray
partially
away from the main
unit
3
2
Move base function tray latches to the
unlocked position
Disconnect DS30 cables
from the MSC
Unfasten base function tray
latch screws
1
4