TM 9–1200–215–34&P
2–51
2–24.
BACKPLANE MAINTENANCE INSTRUCTIONS CONTINUED
a.
REMOVAL CONTINUED
CAUTION
The connector panel assembly is
attached by cables to internal
components of ACU and cannot be
moved very far from housing without
putting strain on those cables. Exercise
caution when removing bottom cover
from ACU housing. Failure to comply
may result in damage to equipment.
5.
Remove ACU connector panel assembly (4) by
removing 16 screws (5) and 16 flat washers (6).
Lift connector panel assembly off housing (3).
CAUTION
The EMI shielding gasket is vital to this
piece of equipment and is easily
damaged.
Handle with care when
removing or replacing it.
Failure to
comply may result in damage to
equipment.
6.
Inspect EMI shielding gasket (7) in groove in
housing (3) for cuts, nicks, or signs of
stretching. Discard EMI shielding gasket if
unserviceable.
7.
Remove 1553 CCA in accordance with
procedure outlined in paragraph 2–15.
8.
Remove Discrete I/O and Servo CCAs in
accordance with procedure outlined in
paragraph 2–16.
9.
Remove TCIM CCA in accordance with
procedure outlined in paragraph 2–17.
10. Remove CPU CCA in accordance with
procedure outlined in paragraph 2–18.
NOTE
Tag all cables before removing to
aid in installation.
11.
Disconnect cable connectors (8, 9, and 10)
from backplane at J15, J16, and J17,
respectively, by loosening two captive screws
(11) on each connector.
12. Remove Power Supply Assembly in
accordance with procedure outlined in
paragraph 2–19.
11
8
9
10
11
4
5
6
3
7