Pioneer XR-A660 Service Manual page 56

XR-A660, XR-A330
Recording Adjustment
(1) Bias Oscillation Frequency Adjustment
n I p t u S g i
S e t p M o d e
T e t s T a
L o a d h t e S T D
1 R E C e t t s a t p e a n d
e r c o d r n i g m o
(2) Recording Bias Adjustment
•
Since this adjustment affects recording bias, prevent distortion from increasing due to underbias.
S e t p M o d e n I p t u S g i
n I p t u a 3 1 5 H
1 R E C A U X t r e m n i l a
s e e l t c r o o t A U
L o a d h t e S T D
→
R E C e r c o d r p / a l y b a
2
P L A Y 1 0 k H z s g i n a . s l
s ( e e h t e N o e t
Note : Set the 10kHz input signal level to the same value as the 315Hz input signal level of step 1.
(3) Recording Level Adjustment
S e t p M o d e n I p t u S g i
n I p t u a 3 1 5 H
1 R E C A U X t r e m n i l a
s e e l t c r o o t A U
L o a d h t e S T D
→
R E C
2 e r c o d r p / a l y b a
P L A Y
s g i n a . l
(4) ALC Operation Check
S e t p M o d e n I p t u S g i
1
n I p t u a 3 1 5 H
R E / C
A U X t r e m n i l a
P A U S E
2
s e e l t c r o o t A U
56
n a / l
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       
D e k c I I
6 - 3 2
s t e h t e
L 2 8 0
D E C K
I
d . e
A ( F A s s
n l a T / e t s T a p e A d u j
D e k c
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a n d s t e h t e n i p t u
. X
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D e k c
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k c h t e 3 1 5 H z a n d
D E C K I
b e o l w )
n l a T / e t s T a p e A d u j
D e k c
z s g i n l a o t h t e I I
a n d s t e h t e n i p t u
. X D E C K
I
D e k c I I
6 - 3 2 e t t s a t p e a n d
k c h t e 3 1 5 H z
D E C K I
n l a T / e t s T a p e A d u j
n I p t u s g i n l a
z s g i n l a o t h t e
a n d s t e h t e n i p t u
S t e o t a e l v
. X
n i p t u e l v l e
M e a s u e r m e t n A d u j t s
P o n i s t V a
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B e w t e e n
1
b e 1 0 5 0 .
p i o t n n i F g i 7 .
) y
±
2 k H . z
a n d G N . D
M e a s u e r
t s n i g P o n i s t
P o n i
              
T A P E T E
P O N I T ( , L
A ( F A s s ) y
n I p t u s g i n l a e l v l e
              
T A P E T E
P O N I T ( , L
V R 2 8 0 1 L ( c ) h
A ( F A s s ) y
V R 2 8 0 ( 2 R c ) h
M e a s u e r
t s n i g P o n i s t
P o n i
T A P E T E
n I p t u s g i n l a e l v l e P O N I T ( , L
A ( F A s s ) y
              
T A P E T E
P O N I T ( , L
V R 2 3 0 1 L ( c ) h
A ( F A s s ) y
V R 2 3 0 ( 2 R c ) h
M e a s u e r
t s n i g P o n i s t
P o n i
T A P E T E
e l v l e
P O N I T
l e + 1 0 d B a d o v e h t e
( , L R c ) h
t a s e t p . 1
A ( F A s s ) y
m e t n
R e m a k r
u l e
o i n f I h t e R E C S / T O P b t u o t
y c o t s e c o n d s w h e l i h t e p o w
k H z B Y m o d , e h t e f e r q u e n
2 o t 3 k H . z
m e t n
A d u j t s m e t n V a u l
s t
S T
R c ) h – 2 3 7 . d B V
S T R e p e t a a d u j t s m e t n u n
R c ) h f o h t e 1 0 k H z s g i n l a s i
f o r m h t t a f o h t e 3 1 5 H z
m e t n
A d u j t s m e t n V a u l
s t
S T
R c ) h – 7 7 . d B V
S T R e p e t a e r c o d r n i , g p a l y
R c ) h a d u j t s m e t n u n l i t p a l y b
3 1 5 H z s g i n l a b e c o m e s
m e t n
A d u j t s m e t n V a u l
s t
S T
– 8 2 . d B V
C o n r i f m h t t a h t e e r a d n i
±
– 2 2 . 2 5 . d B . V
s
n f r o o f r u
r e s i n i S T A N D
y c w l l i d e c e r a s e
e R e m a k r s
l i t p a l y b a k c e l v l e
±
i w h t n i 0 0 5 . d B
s g i n a . l
e R e m a k r s
b a k c a n d
a k c e l v l e f o h t e
– 7 7 . d B . V
e R e m a k r s
g s i