Figure 2-2. Radio set simulator chassis terminal board (TB1), front view, showing location of parts.

TM 11-6625-564-45

Figure 2-2. Radio set simulator chassis terminal board (TB1), front view,

showing location of parts.

through 2-22, 4-12, and 4-14) to trace cir-

Each subassembly has a separate voltage and

cuits and further isolate the faulty part.

resistance diagram.

Take resistance readings only

Caution :

b. If the voltage indications are normal,

with Multimeter, ME-26B/U. The dc source

take resistance measurements to isolate open

in some multimeters can destroy the transis-

or short circuits. Refer to the same figure as

tors by causing excessive current through

in a above. Refer also to the resistance and

them.

continuity chart (para 2-4c) and to the dc re-

d. The dc resistances of the transformers in

sistance of transformers (c below).

the radio set simulator should be less than 10

ohms. An infinite reading indicates an open

c. Use the schematic diagrams (fig. 4-8 and

winding.

4-9) and the wiring diagrams (fig. 2-19