248 Upgrade and Maintenance Manual TX140 S1
Expansion cards and backup units
I There are different BBUs available. Please notice the position of the
three bolts (see circles in figure 121 and figure 122) to recognise the right
position for installing the BBU in the BBU holder.
Figure 121: Installing the BBU in the BBU holder (example A)
Figure 122: Installing the BBU in the BBU holder (example B)