Troubleshooting - TM-11-6625-492-120016

the additional equipment used in the

(4) Inspect the seating of interconnecting

test procedure.

and test cables. Use direct pressure

to insure they are firmly seated.

b. Cable Continuity Tests. Use the AN/

(5) See that there are no loose or missing

URM-105 to check for continuity (0 ohms re-

screws. Tighten loose screws, and re-

sistance) between the connectors on each of

place any that are missing.

the cables.

(1) Signal generator cables, ac voltmeter

cable, and adapter cable. These cables

19. Troubleshooting

have only single center conductors and

If the equipment fails to perform properly,

ground connections.

turn off the power to all additional equipment

(2) Test cables. Each of these cables has

used in the test procedure. Perform the checks

six connections which are used. Both

indicated in a and b below. If these checks do

cables are wired in the following man-

not locate the trouble, troubleshooting at a

ner:

higher echelon of maintenance is required. Note

on the repair tag how the equipment performed

at the time of failure.

a. Visual Inspection. Check the equipment

for the following possible causes of malfunc-

tion:

(1) Test or interconnecting cables loosely

or improperly connected.

(2) Incorrect settings of switches or con-

Note. On the selector test cable P1 and P2 are identical. On

the indicator test cable P1 is the plug which connects to the

trols on either the resolver test set or

course indicator.