28
Service Supplement
BX900
S1
Replacing the midplane
Replacement routines
©
c
o
gn
it
a
s
.
G
e
s
e
lls
c
h
ft
f
ü
r T
e
c
h
ni
k
-D
o
k
u
m
e
n
ta
ti
o
n m
b
H
200
9
P
fad
: R
:\
B
X
9
0
0
\S
e
rv
ic
e
-S
u
ppl
e
m
en
t\
V
e
rs
ion_
20
09-
06
\A
rc
h
iv
\B
X
900
S
1_s
up
pl
.e
n
\B
X
9
00S
1
_
s
upp
l_
e
n
.k
0
4
Step 3: Installing the midplane
Figure 11: Positions of the guide pin bushes
Ê
Carefully place the midplane on the guide pins on the back of the rear
chassis. The holes for this purpose are marked by circles in
figure 11
.
Ê
Secure the midplane using the twelve screws that you kept when you
removed it, see
page 27
.
Step 4: Installing the rear chassis
To install the rear chassis, follow the same procedure as for removing it, except
in reverse order, see
page 24
.
