Appendix C: Field-Replaceable Units
7750 SR-a4 and SR-a8 Installation Guide 193
Removing a CPM-a
Figure 70 shows how to remove a CPM-a from the 7750 SR-a4 chassis. Table 98 describes
the features. The same method applies to the CPM-a cards in the 7750 SR-a8 chassis.
Figure 70: Removing a CPM-a
Required tools:
• #2 Phillips or flat blade screw driver
To remove a CPM-a:
Step 1. Disconnect all cables connected to the CPM-a ports.
Step 2. Use a screwdriver to loosen the captive screws.
Step 3. Grip the CPM-a captive fasteners and slide the CPM-a out of the slot.
Table 98: Removing a CPM-a Features
Key Description
1 Slot guide
2 Captive screws
3 Threaded receptacle
7750
S
R
-
a4 Fan T
r
a
y
Pwr
S
t
at
S
l
o
t
L
ayo
u
t
1
/
1
X
P
1
/
2
1
/
3
1
/
4
1
CP
M
A
C
P
M
B
7
7
50
SR-
a
4
S
e
r
vic
e
Ro
u
ter
P
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r
S
t
a
t
P
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7
7
5
0
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1
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1
0
0
GE
-
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at
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1
A
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2
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3
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4
L
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5
A
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6
L
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7
A
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8
L
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9
A
ct
10
L
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11
A
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1
2
L
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13
Act
1
4
L
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15
Ac
t
16
L
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17
Act
18
L
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19
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2
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7750
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DTE
P
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M-a
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Co
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C
om
pact
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ash
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Ac
t
Lnk
Ac
t
Ma
j
or Mi
nor
P
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7
7
5
0
MD
A-a
X
P
1
0
-
1
0
G
B-
S
FP
+
10
Lnk
A
ct
9
Lnk
A
c
t
8
Lnk
Act
7
Lnk
Act
6
Lnk
Act
5
Lnk
A
c
t
4
Lnk
A
ct
3
L
nk
Act
2
Lnk A
ct
1
Lnk
Ac
t
Pw
r
7
7
5
0
M
D
A
-a
4
4
-
1
G
B-
CS
FP
/
S
FP
S
tat
L
n
k
/
A
c
t
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
2
3
3
3
4
3
5
3
6
3
7
3
8
3
9
4
0
4
1
4
2
4
3
4
4
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
Air
F
ilt
er
Ac
c
e
s
s
7
7
5
0
S
R
-a
4
S
y
ncE/15
8
8
A
larm
s
1
P
P
S
A
CO/
LT
C
r
i
t
i
c
a
l
Lnk
DTE
P
w
r
7
7
5
0
C
P
M-a
S
t
a
t
Co
n
so
l
e
M
gmt
O
E
S
B
I
TS
C
om
pact
Fl
ash
DCE
Ac
t
Lnk
Ac
t
M
a
j
or
M
i
nor
1
3
2
2
24559
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