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
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