Pioneer SK-700 Service Manual page 29

5 . 1 5 F M M P X A D J U S T M E N T
o Connection Diagram
Stereo Modulator
M o d u l a t i o n f r e q u e n c y
. . . 1 k H z
M o d u l a t i o n r a t i o . .
. 1 O O %
P i l o t s i g n a l
. . . . 7 . S k H z d e v i a t i o n
M a i n s i g n a l
. . . 6 T . S k H z d e v i a t i o n
S t e r e o
M o d u t o t o r
D u m m y A n t e n n o
O s c i t l o s c o p c
Fre que nc y Co un te r
-\-
F4,.G
o To Adiust
1 . U s i n g t h e F M S S G , a p p l y a 9 8 M H z . 1 0 d B s i g n a l t o t h e
a n t e n n a t e r m i n a l s a n d t u n e t o 9 8 M H z .
2 . S e t o u t p u t o f t h e F M S S G t o 6 0 d B a n d t u r n m o d u l a t i o n
O F F .
3 . A d j u s t V R 1 u n t i l a r e a d i n g o f l 9 k H z + 5 0 H 2 i s o b t a i n e d
o n t h e f r e q u e n c y c o u n t e r .
4 . A d j u s t V R 2 f o r m a x i m u m s e p a r a t i o n .
5. Vary the output of FM SSG between 20 and 33dB and
m a k e s u r e t h a t t h e t u n i n g i n d i c a t o r ( g r e e n ) l i g h t s . l f i t
d o e s n ' t l i g h t , s h o r t D 2 o r D 4 .
F i g . 4 5
2 A