CHAPTER 3
FOURTH ECHELON REPAIRS
by removing the chassis from the case (TM 11
19. Parts Replacement Techniques
662531612). However, for checking parts that
Caution: Be careful to avoid damage to delicate
are located on the front (fig. 14) of the chassis
mechanisms, circuit parts, and wiring when the
or parts that are mounted through the chassis
chassis of the tube tester is removed from the
where terminals on both sides must be avail-
c a s e . Only qualified maintenance personnel,
able, the chassis must be lowered (par. 20).
equipped with the proper tools, should attempt
Some parts that are located beneath the chassis
repair and replacement of parts.
or near the resistor mounting board cannot be
replaced unless the chassis is repositioned and
Most maintenance and repair can be per-
the resistor mounting board is removed from the
chassis.
formed on Test Set, Electron Tube TV-2(*)/U
AGO 1428A
24
