Alcatel-Lucent 7750 SR-a4 - Installing a Fan Tray

Installing Components
7750 SR-a4 and SR-a8 Installation Guide 109
Installing a Fan Tray
The fan tray is chassis specific. The 7750 SR-a4 has four axial fans. The 7750 SR-a8 chassis
requires a larger fan tray, which has six axial fans. The fan tray is mandatory, and must be
installed in the vertical slot on the left side of the chassis.
Figure 35 shows how to install the SR-a4 fan tray in the 7750 SR-a4 chassis. Table 47
describes the features. The same installation method applies to the SR-a8 fan tray in the
7750 SR-a8 chassis.
Figure 35: Installing the Fan Tray (7750 SR-a4)
Required tools:
• #2 Phillips or flat blade torque driver
To install the fan tray:
Step 1. Align the fan tray with the guides in fan tray slot (Key 1 in Figure 35).
7750
S
R
-
a4 Fan T
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a
y
Pwr
Stat
S
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ot
Lay
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t
1
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Ro
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7750 SR
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6
L
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9
Ac
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10
L
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k
11
Ac
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12
L
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13
Ac
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14
L
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15
A
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L
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Ac
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8
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7
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1
0
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1
0
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B-
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+
10
Lnk Ac
t
9
Lnk A
c
t
8
Ln
k
A
c
t
7
Ln
k
A
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t
6
Lnk A
c
t
5
Ln
kAc
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4
Lnk
A
c
t
3
Lnk
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t
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Act
1
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kAct
Pwr
7
7
5
0
M
DA-a
4
4
-
1
G
B-
CS
FP
/
S
F
P
S
t
a
t
L
n
k
/
Ac
t
1
2
3
4
5
6
7
8
9
10
11
1
2
1
3
1
4
15
16
25
26
27
28
29
30
31
32
33
34
3
5
36
37
38
39
40
41
42
43
44
17
18
19
20
21
22
23
24
A
ir
F
ilt
er
Ac
c
es
s
7
75
0
S
R
-a4
24586
P
wr
7
7
5
0
CP
M
-
a
S
t
at
7750 SR
-
a4 Fan T
r
ay
P
w
r
S
t
at
S
l
o
t
L
ay
o
u
t
1
/
1
X
P
1
/
2
1
/
3
1
/
4
1
CP
M
A CP
M
B
2
1
2
Table 47: Fan Tray Installation Features
Key Description
1 Chassis slot guide for fan tray
2 Captive screws