Pioneer XR-A660 Service Manual page 54

XR-A660, XR-A550, XR-A330
0 dB 30s
0 dB: 315 Hz, 250 nwb/m
30s
315Hz
6.3kHz 10kHz
Playback Adjustment
(1) Head Azimuth Adjustment
•
Do not switch between forward and reverse operation with the screwdriver inserted.
n I p t u S
S e t p M o d e
T e t s
S T D 3 - 3 1 E e t
1 P L A Y P ( a l y b a c : k 1
2 - 0 d ) B
(2) Playback Level Adjustment
•
Since this adjustment determines playback Dolby NR level, perform it carefully.
n I p t u S
S e t p M o d e
T e t s
S T D 3 - 3 1 E
1 P L A Y e t t s a t p e
P ( a l y b a c : k 3
REV Azimuth Adjustment Screw
Fig. 5 Head Azimuth Adjustment Screw
54
30s 30s 10s 10s ......................................................................................................... 10s
12.5
315Hz 14kHz
kHz
Fig. 4 STD-331E Test Tape
g i n a / l
A d u j t s n i g P o n i
T a p e
t s a t p e H e a d a i z
D e k c I
0 k H , z a d u j t s m
D e k c I I
c s e r w ( i F
g i n a / l
A d u j t s n i g P o n i
T a p e
V R 2 3 0
D e k c I
V R 2 3 0
V R 2 3 0
1 5 H z 0 , d ) B
D e k c
I I
V R 2 3 0
FWD Azimuth Adjustment Screw
6.3
10kHz 8kHz
4kHz 2kHz
kHz
M e a s u e r m e t n A d u j
s t
P o n i s t V
m u h t T A P E T E S T
M a . x p
e t n P O N I T ( , L R c ) h
s g i n l a
. g ) 5 A ( F A s s ) y
M e a s u e r m e t n A d u j
s t
P o n i s t V
3 L ( c ) h
T A P E T E S T
( 4 R c ) h
P O N I T ( , L R c ) h –
5 L ( c ) h
A ( F A s s ) y
( 6 R c ) h
250
3dB
250
3dB
Fig. 6 Frequency Characteristics
500 250 125
1kHz 63Hz 40Hz
Hz Hz Hz
t s m e t n
R e m a
a u l e
a l y b a k c A t f r e a d u j t s m e n , t a p p
e l v l e h t e h e a d a i z m u h t a d
t s m e t n
R e m a
a u l e
3 7 . d B V
PLAY BACK
12.5k
10k
3dB 4dB
RECORDING
12.5k
10k
3dB 5dB
–20 dB
k r s
y l i s c i l o n b o n d o t
u j t s m e t n c s e r . w
k r s