TM 11-5895-846-14
(5) Reinstall unit following steps (1) through
(3) Pull out the control monitor panel from the
(4) above in reverse order.
front of the shelf.
u. Removal and Replacement of VF Patching
NOTE
Panel, A25.
Two flying leads are attached to this
(1) Remove the top access panel from the
panel and must be removed from the
side of rack 8 (located above the central distribution
connectors mounted inside the shelf
frame A30).
before the panel can be totally
(2) Loosen captivated screws securing front
withdrawn from the shelf.
panel to rack and pull unit out of rack approximately four
(4) Remove all remaining module boards
inches to gain access to rear connectors.
from shelf.
(3) Starting with the bottom row and working
(5) Remove loose hardware retaining front of
upwards, remove 12 circular connectors from rear of
shelf to rack and work from inside of shelf to remove two
unit.
retaining screws on the sides.
(4) Slide unit out of rack while depressing
(6) Remove two jam nuts on connectors J16
slide stop tabs until clear of slide tracks.
and J17 from inside of shelf which allows the two
CAUTION
connectors to be pushed out of rear apron on unit.
Because of unit weight two persons are
(7) Working from above unit, remove three
required.
circular connectors from rear and slide unit along the
(5) Reinstall unit, following steps (1) through
support rails until clear of rack.
(4) above in reverse order.
(8) Reinstall unit by following steps (1)
v. Removal and Replacement of the Line
through (7) above in reverse order.
Conditioning. Unit No. 2, A26.
y. Removal and Replacement of Multiplexer, A29
(1) Repeat step u above.
(AN/FCC-98.)
(2) Remove all modules from front of unit to
NOTE
gain access to retaining hardware.
Front cover on unit may be left in place
(3) Remove two loose screws retaining unit to
during removal of unit.
side of support rails from inside of shelf and remove
(1) Turn the power switch for rack 8 (located
loose hardware retaining front of unit to rack.
on the power distribution panel) to the OFF position.
(4) Working from above unit, remove six
(2) Remove the bottom access panel from
circular connectors from rear of unit.
the side of rack 8 (located below the central distribution
(5) Remove unit by sliding unit out of rack
frame, A30).
along the support rails.
(3) Remove all loose hardware retaining front
(6) Reinstall unit by following steps (1)
panel to rack.
through (5) above in reverse order.
(4) Carefully slide unit on support rails
w. Removal and Replacement of the Line
(approximately ten inches) out of rack.
Conditioning Unit No. 1, A27.
CAUTION
(1) Repeat steps u and v above.
Because of unit weight, two persons are
(2) Remove all modules from front of unit to
required for removal purposes.
gain access to retaining hardware.
(5) Remove all cabling from connector on
(3) Remove two loose screws retaining unit to
rear of unit.
side of support rails (from inside of shelf), and remove
(6) Carefully pull unit completely out of rack.
loose hardware retaining front of unit to rack.
(7) Reinstall following steps (1) through (6)
(4) Working from above unit, remove six
above in reverse order.
circular connectors from the rear panel.
NOTE
(5) Remove unit by sliding unit out of rack
During step (7) above, observe the
along the support rails.
following cable reinstallation sequence:
(6) Reinstall unit by following step (1) through
(a) Working from operator's right to left,
(5) above in reverse order.
reinstall rectangular connectors with captivated
x. Removal and Replacement of the Controller
screws.
Signaling Shelf, A28.
(b) Reinstall large rectangular connector
(1) Repeat steps u, v, and w above.
with captivated screws.
(2) Loosen the captivated screws securing
(c) Reinstall eight twin-axial plugs.
retaining bar across shelf and remove bar.
(d) Reinstall eight circular connectors
working from bottom to top.
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