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12. ADJUSTMENTS
FM Tuner Section
o Check that the dial pointer indicates a starting point.
o Connect the SIGNAL meter between terminal no. 5 of tuner ass'y and the ground.
o connect the TUNING meter between terminals no. 1 and no. 2 of tuner ass'y.
o Set the FM switch to ON and the FM MUTING switch to OFF.
N O T E :
Connect the MPX SG to the FM SG external modulator terminal and set the modulation to Main (IhHz, L+R) +67.5hH2
deuiation, Pilot (19hHz) !7.ShHz deuiation.
AM Tuner Section
o Check that the dial pointer indicates a starting point.
o Turn ON the MW switch.
o Connect the SIGNAL meter between the terminal no. 5 of tuner ass'y and the ground.
Position of
I Adlurt-"nt
o t a t p o t n l e r
I
p o i n t
- l
S e r t h e T U N I N G m e t e r t o t h e c e n t e r p o s i t i o n a n d t h e S I G N A L
V C 3
| m e t e r t o t h e m a x i m u m v a l u e .
( F i g . 1 2 - 1 )
R e p e a t s t e p s 1 t o 2 .
S e t t h e S I G N A L m e t e r t o t h e m a x i m u m v a l u e .
S e t t h e T U N I N G m e t e r t o t h e c e n t e r D o s i t i o n .
T u r n O N t h e F M M U T I N G s w i t c h .
R e m o v e R l O 4 w h e n m u t i n g o p e r a t i o n s t o p s a b o v e 3 0 d B .
S e t t h e s i g n a l o f t h e t e r m i n a l n o . 1 0 t o l 9 k H z ( 1 1 0 0 H 2 ) .
M i n i m i z e t h e d i s t o r t i o n o f t h e O U T P U T t e r m i n a l s i g n a l .
Step
AM
3Q"/o
SG
m o d u l a t i o n l
Position of
dial pointer
Adiustment
p o i n t
Adlustment procedure
Frequenry
Level
I
1 4 0 0 k H z
1 00dB
l 4 O O k H z
T C 5
S e t t h e o u t p u t o f t h e O U T P U T t e r m i n a l t o t h e m a x i m u m
v a l u e .
2
600kHz
1 0 0 d B
6 0 0 k H z
T4
J
Repeat steps 1 to 2
4
r4ook;; T
.*r
f
''ooons.-f--ica
5
6ookHz
I
soae
I
ooor.H.
l
t.
o
R e p e a t s t e p s 4 t o 5 .
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