65
F
F
o
o
r
r
t
t
r
r
e
e
s
s
s
s
9
9
5
5
0
0
0
0
/
/
9
9
3
3
0
0
0
0
O
O
n
n
l
l
i
i
n
n
e
e
M
M
a
a
n
n
u
u
a
a
l
l
H
ousing
In
structi
o
n
Open
A
1.
Open the front panel door and remove the side panels. See “
Opening the housing panels
” on
page 38 for more information.
2.
See which of the fan is defective. Refer to the LED located at the bottom side of each fan.
3.
Insert your forefinger into the grasp hole and use your thumb to press the latch to release the
defective fan.
4.
Pull out the fan and replace it with a good one. Make sure that the fan is operating properly.
5.
Close the chassis panel.
