User's Manual Part 2

PAF-0813-E0-001 Field Replacement Procedures
044-05287 Rev A 4-7
Subrack
To remove and replace the subrack, shown in Figure 4-5, perform the steps in Table 4-7.
Figure 4-5 Subrack Removal and Replacement
CAUTION: Support rear of Subrack when removing from rack. The subrack may disengage
suddenly from the sliding brackets.
Table 4-8 Subrack Removal and Replacement Procedure
Step Action
1. At affected subrack, set all MCPA OFF/ON/RESET switches to OFF
2. At breaker panel, set all subrack associated circuit breakers to OFF
3. Disconnect all semi-rigid RF cables between subrack and duplexer
4. Disconnect subrack alarm cables
5. At rear of subrack, label and disconnect all breaker panel DC power connections,
maintaining DC Power cable service loop
6. Remove four mounting screws from both sides of subrack
7. Slide subrack forward out of frame until completely disengaged from sliding brackets.
Ensure rear of subrack is supported to prevent subrack from suddenly disengaging
8.
Install new subrack in reverse order of removal
DC POWER
+27V
RETURN
0
1
2
3
0
1
2
3
S
T
A
T
U
S
R
E
S
E
T
S
T
A
T
U
S
R
E
S
E
T
S
T
A
T
U
S
R
E
S
E
T
PC
I/O
P
C
I/O
P
C
I
/
O
S
T
A
T
U
S
R
E
S
E
T
P
C
I/O
Alcatel Lucent
Alc
ate
l Lucent
Alc
ate
l Lucent
Alcatel Lucent
Subrack
Four screws located
on both sides of subrack
DC power
connection
s