Chapter 1. THEORY

CHAPTER 1

THEORY

Section 1. GENERAL

ual to the Commanding Officer, U.S. Army Sig-

1. Scope

nal Materiel Support Agency, ATTN: SIGMS-

a. This manual covers field and depot main-

PA2d, Fort Monmouth, N. J.

tenance for Test Sets, Electron Tube TV-2/U,

Note. For applicable forms and records, see para-

TV-2A/U, TV2B/U and TV-2C/U. It includes

graph 2, TM 11-6625-316-12.

instructions to fourth and fifth echelons for

troubleshooting, testing, aligning, and repairing

2. Internal Differences in Models

the equipment; replacing maintenance parts;

and repairing specified maintenance parts. It

On the TV-2B/U and the TV2C/U, an anti-

also lists tools, materials, and test equipment

parasitic ferrite bead (fig. 1 ) is attached to one

for fourth and fifth echelon maintenance. There

of the leads going to each terminal of the test

sockets to prevent the tube under test from oscil-

are 110 maintenance functions allocated to third

echelon. Detailed functions of the equipment are

hating. On the TV-2/U, resistor R 1 is 250 ohms;

on TV-2A/U, TV2B/U, and TV2C/U, R1 is

covered in paragraphs 3 through 11.

b. The complete technical instructions for

300 ohms. On the TV2C/U, resistors, R24 and

R25 are connected differently to transformer

this equipment includes TM 116625-316-12

and TM 116625-316-35P.

T2. Refer to figure 26. For external differences,

c. Forward comments concerning this man-

see TM 116625-31612.

AGO 1428A