M A I N T E N A N C E P R A C T I C E S
f
( e ) W i t h d r a w f r o n t p a n e l f r b m c h a s s i s .
(3 ) Re m ov e tu n in g di a l ( 2 4)
( a ) L o os e n t wo s e t sc r e w s ( 2 5 ) th a t f a s t e n d i a l
(24) to shaft of tuning capacitor (52).
( b ) W i t h d r a w t u n i n g d i a l f r o m s h a f t .
Remove band switch detent (42).(4)
( a ) R e m o v e t w o s c r e w s ( 4 3 ) t h a t f a st e n
detent to chassis.
Withdraw detent shaft carefully
through module assemblies to
prevent possible damage to
w a f e r s w i t c h e s .
( b ) W ’ i t h d r a w d e t e n t f r o m c h a s s i s .
Remove module assemblies (44) through (47).
(5)
( a ) R e m o ve t w o sc r e w s ( 3 9 ) t h at f a s t e n R F
shi e ld (38) t o m odule s t rap (40) .
(b) Remove the one screw ( 4 1 ) t h a t f a s t e n
mo d u le r e t ai n i ng s t r ap ( 4 0 ) t o c ha s s i s ( 7 1 ).
(c) Withdraw strap from its mounting position,
( d ) U n s o l d e r a t t a c h i n g w i r e s o n m o d u l e a s s e m b l i e s .
(
( e ) W i t h d r a w m o d u l e a s s e m b l i e s f r o m c h a s s i s .
Remove printed circuit board assembly (48).
(6)
( a ) R e m o v e s i x s c r e w s ( 4 9 ) t h a t s e c u r e p r i n t e d
c i r c u i t b o a r d a s s e m b l y t o c h a s s i s .
(b) Withdraw printed circuit board assembly
through bottom of chassis.
R e m o v e C W o s c i l l a t o r m o d u l e ( 5 0 ) .(7)
(a ) R em o ve t w o s c r e w s (5 1 ) th a t fa s t en C W
o s c i l l a t o r m o d u l e t o c h a s s i s .
( b ) W i t h d r a w C W o s c i l l a t o r m o d u l e .
(8)
Re m o v e t un i n g c a pa c i to r (5 2 ) .
( a ) R e m o v e f o u r s c r e w s ( 5 2 c ) t h a t s e c u r e
tuning capacitor (52) to chassis (71).
(b) Unsolder attaching wires on tuning capacitor.
( c ) W i t h d r a w t u n i n g c a p a c i t o r f r o m c h a s s i s .
C.
DISASSEMBLY PROCEDURE: SERVOAMP-INDICATOR (See Figure 303).
( 1 ) R e m o v e d u s t c o v e r ( 1 )
(a ) Re m ov e tw o sc r ew s (2 ) t h a t h o ld d us t c o v er
to c h a s s is a s s e m bly ( 1 4 ) .
c
April 1965
(Revised April 1967)
Page 124
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