Pioneer XR-A660 Service Manual page 58

XR-A660, XR-A550, XR-A330
Playback Adjustment
(1) Head Azimuth Adjustment
•
Do not switch between forward and reverse operation with the screwdriver inserted.
n I p t u S g i
S e t p M o d e
T e t s T a
S T D 3 - 3 1 E e t
1 P L A Y P ( a l y b a c : k 1 0
2 - 0 d ) B
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
L o a d h t e S T D
1 R E C
e r c o d r ( N o s g i
L o a d h t e S T D
→
R E C R e c o d r h t e 3
2
P L A Y s g i n a s l t a 2 - 5
c ( h e k c B p o
Note : No connecting to BIAS TP POINT at Step 2 REC→PLAY.
58
REV Azimuth Adjustment Screw
Fig. 10 Head Azimuth Adjustment Screw
n a / l
A d u j t s n i g P o n i
p e
t s a t p e H e a d a i z m
D e k c
I
k H , z a d u j t s m e t n
D e k c
I I
c s e r w ( i F . g
n a / l
A d u j t s n i g P o n i
p e
      
D e k c
I I
6 - 3 3
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
6 - 3 3 e t t s a t p e a n d
D e k c I
n a ) l
6 - 3 3 e t t s a t p . e D e k c I I
1 5 H z a n d 1 0 k H z
d B V n i p t u e l v l e
D E C K
I
n i ) t a n d p a l y b a c . k
FWD Azimuth Adjustment Screw
M e a s u e r m e t n A d u j t s
s t
P o n i s t V a
u h t T A P E T E S T
M a . x p a l
P O N I T ( , L R c ) h
s g i n l a e l
1 ) 0 A ( F A s s ) y
M e a s u e r m e t n A d u j t s
s t
P o n i s t V a
              
O c s l l i t a
f e r q u e n
A
B e w t e e n
1
b e 1 0 5
p i o t n n i i F . g 1 1
) 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
V R 2 8 0 2 B A I S T P
A ( F A s s ) y A ( F A s s ) y
              
T A P E T E
P O N I T ( , L
V R 2 8 0 2
A ( F A s s ) y
A ( F A s s ) y
m e t n
R e m a k r
u l e
y b a k c A t f r e a d u j t s m e n , t a p p y l
v l e h t e h e a d a i z m u h t a d u j
m e t n
R e m a k r
u l e
o i n
y c o t
0 . k H z
m e t n
A d u j t s m e t n V a u l
s t
P O N I T
2 4 V – 2 7 V
R e p e t a a d u j t s m e t n u n
S T p a l y b a k c e l v l e f o h t e
R c ) h 1 0 k H z s g i n l a s i i w h t n i
1 0 . d B f o r m h t t a f o h t e
3 1 5 H z s g i n a . l
s
i s c i l o n b o n d o t
t s m e t n c s e r . w
s
e R e m a k r s
l i t
±
0