Pioneer ARP-230-0 Manual de serviço - Página 20
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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. 1 of complex assembly and the ground.
o In principle, no adjustment should be made on FM tracking. (See page 2I, if. necessary.)
. Set the FM switch to ON and connect terminal no. 6 to the ground.
NOTE:
Connect the MPX SG fo the FM SG external modulator
deuiation, Pilot (19hHz) +7.5hHz deuiation.
terminal and set the modulation of Main (lkHz, L+R) t67.5kHz
( T C 1 )
TC7
TC6
T6
TCs
\ T 2
@ /
(r4)----_@6
,/
_
TC4
TC3
(rc2) @trst
S
uoFT3
\___
N o . 1
-.-No.4
@ v n s
No.6-1_!
Y
T 1
Adjustment
points in brachets
for SX-202L (Low Waue) only.
Step
FM SG
(400H2, t75kHz deviation)
Position of
dial pointer
Adjustment
point
Adjustment procoduro
Frequency
Level
1
9 8 M H z
66dB
9 8 M H z
T 1
set the output of the REc ouT terminal to the maximum
value.
2 .
9 8 M H z
4 6 d B
9 8 M H z
T6
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 .
3 .
9 8 M H z
66dB
9 8 M H z
T 1
A d j u s t t h e o u t p u t o f t h e R E C O U T t e r m i n a l d i s t o r t i o n t o
t h e m i n i m u m l e v e l .
4 .
D i s c o n n e c t t e r m i n a l n o . 6 f r o m t h e g r o u n d .
5 .
98MHz
I
OOOB
Not modulated
9 8 M H z
V R 3
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 . 4
t o 7 6 k H z l t 2 O O H z l .
6 .
9 8 M H z
I
* Stereo m
6 6 d B
o d u l a t i o n
9 8 M H z
T6
( w i t h i n
r90" )
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 R E C O U T t e r m i n a l s i g n a l .
Fi g . 1 1- 1 A d j u stmen t p o int s