Replacement of Jack Sets on Subpanels A and C

TM 11-5895-1123-34

a. Replacement of Jack Sets on Subpanel D (fig. 3-

(10) Twist the jack inward and slip the tube into the

3).

sleeve.

(1) Remove the TTY/low level patch panel (patch

(11) Insert and tighten the mounting screw to secure

panel) as outlined in paragraph 320 above.

the jack to the rear of the subpanel.

(2) Place the patch panel front down with subpanel

(12) Lift the E and F subpanels back into their

D towards the front.

position in the front frame of the patch panel.

(3) Remove the two screws holding the defective

(13) While supporting the E and F subpanels, set the

jack set to the rear of the panel.

patch panel upside down with its face forward.

(4) Lift the defective jack set upward until the tubes

(14) Replace the 12 mounting screws into the front of

clear the sleeves.

the patch panel and secure the subpanels into place.

(5) Twist the jack set outward from the panel.

(15) Replace the patch panel back in the rack by

(6) Tag the wires connected to the jack set.

using the replacement procedures in paragraph 322

(7) If wires are wrapped to the connectors, cut the

below.

wires as close as possible to the connectors. If wires are

c. Replacement of Jack Sets on Subpanels A and

soldered to the connectors, unsolder them.

C (fig. 3-3).

(8) Prepare the wires for soldering and using good

(1) Remove the communications TTY/low level

soldering practices, solder the wires to the connectors on

patch panel from the rack as outlined in paragraph 320

the replacement jack set.

above.

(9) Twist the jack set inward and lower the tubes

(2) Remove the 24 screws on the front panel which

into the sleeves.

hold subpanels A, B, C, and D to the patch panel frame.

(10) Insert and tighten the two mounting screws to

(3) While providing support to the subpanels, set the

secure the jack set to the rear of the panel.

patch panel face down with the A and D subpanels

(11) Place the patch panel back into the rack using

towards the front.

replacement procedures in paragraph 322 below.

(4) Reach under the face of the patch panel and

b. Replacement of Jack Panels on Subpanels E or

push the subpanels upward to release them from the

F (fig. 3-3).

frame.

(1) Remove the communication TTY/low level patch

(5) Gradually work the subpanels forward by inching

panel from the rack by using the removal procedures in

the D, A, B, and C subpanels forward, in that order to

paragraph 320 above.

free them from the drawer.

(2) Remove the 12 screws from the front of the

(6) If necessary, spread the A, B, and C subpanels

patch panel that hold subpanels E and F to the frame.

apart, and remove the two mounting screws holding the

(3) While holding the subpanels in place, turn the

defective jack set to the subpanel.

patch panel face down with the E and F subpanels

(7) Pull upward on the defective jack set until the

towards the front.

tubes are out of the sleeves and then twist the jack set

(4) Reach under the front panel and push upwards

outward.

on the E and F subpanels and free them from the patch

(8) Tag the wires connected to the rear connections

panel and note which subpanel is E and which is F (5) If

of the jack set.

necessary, spread the two subpanels apart and remove

(9) If the wires are connected by wirewrap

the mounting screw holding the defective jack to the

connections, cut the wires as close as possible to the

back of the subpanel.

connectors. If the wires are soldered to the jack set,

(6) Lift the defective jack from the subpanel until the

unsolder them.

tube clears the sleeve and twist the jack outwards.

(10) Prepare the wires for soldering and using good

(7) Tag the wires connected to the jack connectors.

soldering practices solder the wires to the connectors on

(8) If the wires are connected by wire wrapped

the replacement jack set.

connections, cut the wires as close as possible to the

(11) Twist the jack set inward and push the tubes into

jack connectors. If the wires are soldered, unsolder

the sleeves.

them.

(12) Insert and tighten the two mounting screws to

(9) Prepare the wires for soldering and, using good

secure the jack set to the rear subpanel.

soldering practices, solder them to the replacement jack

(13) Lift the subpanels back into the patch panel, and

connectors.

gradually work them back into their position in the frame.

(14) While providing the subpanels with sup

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