
266
Upgrade and Maintenance Manual
BX924
S4
System board components
©
c
o
gn
ita
s.
G
e
se
lls
ch
ft fü
r T
ech
n
ik
-D
o
ku
m
en
ta
tio
n
m
b
H
2
0
13
Pf
a
d:
C
:\P
ro
g
ra
m
m
e
\F
C
T
\ti
m
_a
pp
\ti
m
_l
oca
l\w
or
k\PI
C
H
O
L\
O
B
J_
D
O
KU
-2
0
56
9-
00
1.
fm
10.5.3 Removing the system board
Ê
Remove the following components from the system board as shown in the
related sections:
– Heat sink: see section
"Removing processor heat sinks" on page 219
I
Leave the processor on the defective board for now.
– Memory modules: refer to section
"Removing processor heat sinks" on
page 219
I
Ensure to take note of the memory modules’ mounting positions
for reassembly.
– Mezzanine cards: refer to the section
"Removing processor heat sinks"
on page 219
I
Ensure to take note of the controllers’ mounting positions and
cable connections for reassembly.
– UFM: refer to section
"Replacing the UFM" on page 238
Figure 120: Detaching the system board (A)
Ê
Remove the screw from the system board (see circle).