9
CHAPTER 3: Installation
5. Find the OSD daughterboard that rises above the top of the right-hand end of
the Port Card, shown in Figure 3-1.
Figure 3-1. Top view of the Port Card’s daughterboard, with the two chips
you’ll be replacing shown in black.
6. Look at the two existing chips shown in black in the illustration of the
daughterboard in Figure 3-1. The smaller one on the left will be labeled
“A
a.b
” and the large one on the right will be labeled starting with “O
c.d
”,
where
a, b, c,
and
d
are revision numbers.
If the large right-hand chip is labeled with a revision earlier than O4.2,
you won’t be able to install the Upgrade Kit in the field. Please skip the
remainder of this procedure and call Black Box Technical Support.
If the large right-hand chip is labeled with revision O4.2 or later, use a
PLCC chip puller to carefully remove the two chips from the daughterboard.
7. Use the chip puller to carefully replace the chips you removed in step 6 with
the two chips from the Serial Upgrade Kit, lining up the DOT or pointer and
the notched corners in order to orient the new chips in the same direction
that the old chips were facing.