Disassembly Procedure for Six-Step Signal Attenuator AT702

(14) and bushing (15). Slide the rear

are precision 1 percent tolerance parts. In addi-

tion, resistors R709, R710, R716, R722, R723, and

m o v a b l e plate with attached con-

R724, which are mounted on function switch S702

nector J718 (13) off the two sleeve

(fig. 53), are precision 1 percent tolerance parts.

s p a c e r s (53) and attenuator shaft

Also, resistors R713 and R714, which are mounted

(56).

on terminal board TB705 (fig. 43) have 1 percent

tolerance. If these parts require replacement, use

Disconnect the front movable plate

(3)

the exact value of the part removed. If even slightly

( 2 0 ) from the connecting link rod

different values are used, the accuracy of the test

( 1 9 ) by r e moving the machine

set wll be affected.

screw (17) and bushing (18).

a. Disassembly Procedure for Six-Step

Loosen the two setscrews (48) that

(4)

secure the guide (49) to one of the

S i g n a l Attenuator AT702 (fig. 52 and 90).

I f the source of malfunctioning has been

s l e e v e spacers (53). Remove the

guide.

localized to six-step signal attenuator

L o o s e n two setscrews (23) on the

A T 7 0 2 (para 67c(2)), disassemble the at-

(5)

b r i d g e (24), and slide the bridge

tenuator by referring to figure 90 and then

and barrel assembly (34) off the two

follow the procedures given in (1) through

s l e e v e spacers (53) and attenuator

(6) below.

shaft (56) .

(1) R e m o v e the three machine screws

( 1 ) and lockwashers (2) from the

T o remove a fixed attenuator (38

(6)

r e a r fixed plate (3). Remove the

through 43) from the barrel assem-

bly (34), stand the barrel assembly

rear fixed plate with attaching parts

on its end. R e m o v e the three

(4 through 10).

(2) Disconnect the rear moveable plate

machine screws (35) and lock-

( 1 1 ) from the connecting link rod

washers (36) from the locating ring

(16) by removing the machine screw

(37), and lift the locating ring off

Figure 88. Cable Assembly, Special Purpose, Eledtrical Branched CX-6681/URM-85,

p a r t s location diagram.

183