Section IV. MAINTENANCE OF COMMUNICATIONS

TM 11-5895-1123-34

Section IV. MAINTENANCE OF COMMUNICATIONS

DATA PATCH PANEL SM-A-936517

screwdriver, remove the three screws holding the three

NOTE

paralleled jacks to the rear of the front panel.

The communications data patch panel

(3) Remove the paralleling network and

does not have to be removed from the

interconnected jacks from the rear of the front of the

rack when performing normal

patch panel.

maintenance. However, a removal and

(4) Remove the interconnected jacks from the

replacement procedure is provided in

paralleling network by twisting off the bayonet

case of catastrophic failure of the

connectors.

equipment.

(5) Connect the replacement jack or paralleling

3-14. Removal of Communications Data Patch

network by reconnecting the bayonet connectors on the

Panel SM-A-936517

jack to the paralleling network.

a. Loosen the two captive screws on the right front

(6) Mount the paralleling network with the jacks

side of the patch panel and swing it open.

to the rear of the front panel and secure it by inserting

b. Tag, if necessary, and remove the 230 cables

and tightening the three mounting screws through the

going into the rear of the patch panel by releasing their

three paralleled jacks.

bayonet connectors with the Trompeter RT-4S and RT-

(7) Swing the patch panel closed and tighten

4I, tools.

the two captive screws to secure it to the rack.

c. Remove the four screws holding the patch panel

c. Replacement of Vertical Paralleling (PAR)

to the frame of the rack and remove the patch panel.

Networks and Paralleled Jacks.

3-15. Maintenance of Communication Data Patch

(1) Loosen the two captive screws on the right

Panel SM-A-936517

front of the communications data patch panel and swing

a. Replacement of Front Panel Jack.

it open.

NOTE

(2) Using the special screw-holding Phillips

To replace defective jacks that are a

screwdriver, remove the four screws holding the four

part of a paralleling (PAR) or reversing

paralleled jacks to the rear of the front panel.

(REV) network, see paragraphs 3-15b,

(3) Remove the paralleling network with the

3-15c, and 3-15d below.

jacks from the rear of the patch panel.

(1) Loosen the two captive screws on the right

(4) Disassemble the paralleling network and

front of the communications data patch panel and swing

jacks by twisting off the bayonet connectors.

it open from the rack.

(5) Replace the defective paralleling network or

(2) Using the Trompeter RT-4S or the RT-4L

jack by reconnecting the bayonet connectors.

tool, remove the bayonet connector from the rear of the

(6) Mount the paralleling network with the jacks

defective jack.

to the rear of the front of the patch panel and secure it by

(3) Using the special screw-holding Phillips

inserting and tightening the four mounting screws on the

screwdriver, remove the screw holding the defective jack

four jacks.

to the back of the front panel.

(7) Swing the patch panel closed and tighten

(4) Remove the defective jack and replace it

the two captive screws to secure it in place.

with a new one.

d. Replacement of Reversing (REV) Networks or

(5) Reinsert the mounting screw and secure

Reversing Jacks.

the replacement jack to the rear of the front panel.

(1) Loosen the two captive screws on the right

(6) Using the Trompeter RT-4S or RT-4L tool,

front of the communications data patch panel and swing

reconnect the bayonet connector to the rear of the jack.

it open.

(7) Swing the panel closed and tighten the two

(2) Using the special screw-holding Phillips

captive screws to secure it to the rack.

screwdriver, remove the two screws holding the two

b. Replacement of Horizontal Paralleling (PAR)

reversing jacks to the rear of the front panel.

Networks and Paralleled Jacks.

(3) Remove the reversing network with the

(1) Loosen the two captive screws on the right

jacks from the rear of the patch panel.

front of the communications data patch panel and swing

(4) Disconnect the jacks from the reversing

it open.

network by twisting off the bayonet connector.

(2) Using the special screw-holding Phillips

(5) Replace the defective reversing network or

reversing jack and reassemble the unit by reconnecting

the jacks by twisting on the bayonet connectors.

3-36