Chapter 3. FOURTH ECHELON REPAIRS

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