Sectionalization Tests-CONT. - TM-11-6625-667-450040

TM 11I-6625-667-45/NAVAIR 16-30APM123-2/TO 33A1-3-367-22

Instructions are provided in the charts for using

and the front panel.

the test equipment. These instructions, however,

(5) Remove the card cage cover by un-

fastening the four screws which secure it to the

should be supplemented with the instruction

preselector (A15A1Z1) and remove the two

manual applicable to the test equipment. Before

screws which secure it to the card cage.

preceding with a test setup, remove the trans

ponder test set from its case and remove the card

c. Use of Chart. T h e sectionalization test

cage cover to expose the test points and controls.

charts (d and e below) are step by step test

procedures with reference to an applicable

Proceed as follows:

paragraph which contains a troubleshooting

(1) Unlatch and remove the test set cover.

(2) Remove four hexagonal screws form the

chart covering the probable trouble and required

front panel with a hexagonal driver. One screw is

corrective measure to obtain normal indication.

Each step should be followed in the order given

located above and one below each front panel

for effective fault isolation. The Procedure

handle.

(3) Lift the TS-1089/APM-123(V) from the

column refers to the applicable test setup and

case. A gentle rocking motion maybe necessary.

provides instructions for adjusting the equip-

ment for a specific measurement. The Normal

(4) Set the TS-1089/APM-123(V) carefully

on a clean area of the workbench. Position the

indication column specifies the results that

TS-1089/APM-123(V) for convenient access to

should be observed. Waveforms at applicable test

both the rear section (test point location, fig. 3-6)

points are illustrated in figure 8-36.

Change 5

3-4