Removal and Replacement of Circuit Card Assembly Rack 1A2

TM 11-6625-2937-13

(4) Loosen, but do not remove, four Allen

(7) Loosen, hut do not remove, four Allen

screws (6) on right side support of electrical equipment

screws (6) on left side support of electrical equipment

housing 1A1.

housing IAI.

(5) Loosen, but do not remove, four nuts (12)

(8) Place control-interface unit on its right side.

securing power supply AI PSI (7) to rear panel of control

(9) Remove six Allen screws (12) and

interface unit.

associated washers from end plate of electrical

NOTE

equipment housing IA].

It may be necessary to disconnect five

(10)Place control-interface unit in normal

wires on power supply AIPSI (para 5-18a)

operating position.

to perform step (6).

(11)Remove 20 screws (16) and associated

(6) Loosen power supply AIPSI (7) sufficiently to

washers from front panel (fig. 5-3).

gain access to the four Allen screws (6) on left side

(12)Grasp handles on front panel; pull straight

support of electrical equipment housing IA 1. Repeat

back until circuit card assembly rack (11) separates and

step (5) as required.

clears electrical equipment housing IA].

(7) Loosen, but do not remove, four Allen

b. Replacement.

Replace electrical equipment

screws (6) on left side support of electrical equipment

housing IA I as follows:

housing IAI.

(1) Position replacement electrical equipment

(8) Place control-interface unit on its right side.

housing IAI (15) so that it mates with front panel of circuit

(9) Remove six Allen screws (12) and

card assembly rack I A2 (I 1).

associated washers from end plate of electrical

(2) Secure electrical equipment housing IA I to

equipment housing IAI.

front panel of circuit card assembly rack I A2 by

(10)Place control-interface unit in normal

tightening 20 screws (16) and associated washers.

operating position.

(3) Place control-interface unit on its right side.

(11)Remove 20 screws (16) and associated

(4) Replace six Allen screws (12) and

washers from front panel (fig. 5-3).

associated washers previously remolded from end plate

(12)Grasp handles on front panel; pull straight

of electrical equipment housing I A 1.

back until circuit card assembly rack (11) separates and

(5) Place control-interface unit in normal

clears electrical equipment housing IAI.

operating position.

b. Replacement. Replace circuit card assembly

(6) Tighten four Allen screws (6) and associated

rack I A2 as follows:

washers on left side support of electrical equipment

(1) Position replacement electrical equipment

housing 1A1.

housing IAI (15) so that it mates with front panel of circuit

(7) Secure power supply AI-SI (7) in place by

card assembly rack IA2 (11).

tightening four nuts (12) If necessary, reconnect wires

(2) Secure electrical equipment housing I AI to

previously disconnected from A1PS1.

front panel of circuit card assembly rack I A2 by

(8) Tighten four Allen screws (6) on right side

tightening 20 screws (16) and associated washers.

support of electrical equipment housing I A].

(3) Place control-interface unit on its right side.

(9) Reconnect connectors P 1 (9) and P2 (10) to

(4) Replace six Allen screws (12) and

JI 5 and J16, respectively, f)n circuit card assembly rack

associated washers previously removed from end plate

IA2 (I1).

of electrical equipment housing IAI.

(10)Secure connectors Pi and P2 to J15 and

(5) Place control-interface unit in normal

J16, respectively, by tightening four screw lock

operating position.

assemblies (8).

(6) Tighten four Allen screws (6) and associated

(11)Replace top and bottom access covers (para

washers on left side support of electrical equipment

5-14b).

housing 1A1.

5-22. Removal and Replacement of Circuit Card

(7) Secure power supply AIPSI (7) in place by

tightening four nuts (12). If necessary, reconnect wires

Assembly Rack 1A2 (fig 5-3)

previously disconnected from AIPSI .

a. Removal. Remove circuit card assembly rack

(8) Tighten four Allen screws (6) on right side

1A2 (11, fig. 5-3) as follows

support of electrical equipment housing I A 1.

(1) Remove top and bottom access covers

(9) Reconnect connectors P1 (9) andP2 (10)

from control-interface unit (para 8-14a). Place control-

to15 and J16, respectively, on circuit card assembly rack

interface unit in its normal operating position.

IA2 (I1).

(2) Loosen four .screw lock assemblies (8)

(10)Secure connectors P1 and P2 to 115 and

securing connectors Pi (9) and P2 (10) to J15 and J16,

J16, respectively, by tightening four screw lock

respectively, on circuit card assembly rack I A2 (I1).

assemblies (8).

(3) Disconnect connectors PI and P2 from J15

(11)Replace top and bottom access covers (par

and J16, respectively. and ,set aside carefully.

5-14b).

5-15