Removing and Replacing a CPM-a
194 7750 SR-a4 and SR-a8 Installation Guide
Step 4. Place the CPM-a on an antistatic surface or in an antistatic bag.
Step 5. Do one of the following:
a. If you are installing a replacement CPM-a, go to Replacing a CPM-a on page
194.
b. If you are not installing a replacement CPM-a module, insert an impedance
panel in the empty slot.
Replacing a CPM-a
The following procedure assumes that you have removed the CPM-a, as described in
Removing a CPM-a.
Figure 71 shows how to replace a CPM-a in the 7750 SR-a4 chassis. Table 99 describes the
features. The same method applies to the CPM-a in slot 7 of the 7750 SR-a8 chassis.
Figure 71: Replacing a CPM-a
Table 99: Replacing a CPM-a Features
Key Description
1 Chassis slot guide
2 Captive screws
7750
S
R
-
a4 Fan T
r
a
y
Pw
r
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
CP
M
B
77
50 SR-a4
S
e
r
vic
e
Ro
u
ter
P
w
r
S
t
a
t
P
wr
7
7
5
0
M
D
A
-
a
X
P
1
-
1
0
0
GE
-CF
P
S
t
at
Ln
k
P
wr
7
7
5
0
M
D
A
-a
20-
1G
B-
TX
S
t
at
L
n
k
1
A
c
t
2
L
n
k
3
A
ct
4
L
n
k
5
A
ct
6
L
n
k
7
A
ct
8
L
n
k
9
A
ct
10
L
n
k
11
A
ct
1
2
L
n
k
13
A
ct
1
4
L
n
k
15
Ac
t
16
L
n
k
17
Act
18
L
n
k
19
Act
2
0
P
w
r
7750
SR-a
S
t
at
Sy
ncE1
/5
8
8
A
lar
m
s
1
P
P
S
A
CO
LT
Cri
t
i
c
a
l
Lnk
DTE
P
w
r
7
7
5
0
CP
M-a
S
t
at
Co
n
so
l
e
M
gmt O
E
S
B
I
TS
C
om
pact
Fl
ash
DCE
Ac
t
Lnk
Ac
t
Ma
j
or Mi
nor
P
wr
S
t
at
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
Lnk
A
ct
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
75
0
S
R
-a4
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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