Pioneer XR-A770/KUCXJ, Руководство по обслуживанию

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XR-A880, XR-A770
7. GENERAL INFORMATION
• The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.
HA12136AF (AF ASSY : IC2201)
• Dolby B Type NR System IC
•
Pin Function
7.1 PARTS
7.1.1 IC
. o N e m a N n i P n o i t c n u F . o N e m a N n i P n o i t c n u F
1 N I C E R t u p n i ) e d o c n E ( g n i d r o c e R 9 T U O C E R t u p t u o ) e d o c n E ( g n i d r o c e R
2 V
C C
y l p p u s r e w o P 0 1 T E D r o t c e t e d l e v e l e h t r o f n i p t n a t s n o c e m i T
3 N I B P t u p n i ) e d o c e D ( k c a b y a l P 1 1 T U O B P t u p t u o ) e d o c e D ( k c a b y a l P
4 f e r V e g a t l o v e c n e r e f e R 2 1 B P / C E R
) e d o c e D / e d o c n E ( B P / C E R r o f n i p l o r t n o c e d o M
) e d o c e D ( B P : " L " , ) e d o c n E ( C E R : " H "
5 F F O / N O R N
F F O / N O R N r o f n i p l o r t n o c e d o M
F F O R N : " L " , N O R N : " H "
3 1 S A I B s r e t li f e v i t c a e h t r o f n i p t u p n i t n e r r u c e c n e r e f e R
6 T U O B P t u p t u o ) e d o c e D ( k c a b y a l P 4 1 N I B P t u p n i ) e d o c e D ( k c a b y a l P
7 T E D r o t c e t e d l e v e l e h t r o f n i p t n a t s n o c e m i T 5 1 D N G d n u o r G
8 T U O C E R t u p t u o ) e d o c n E ( g n i d r o c e R 6 1 N I C E R t u p n i ) e d o c n E ( g n i d r o c e R
HA12211NT (AF ASSY : IC2301)
• REC Equalizer and PB Equalizer System IC
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
REC–EQ
GND
TAPE(L)
REC–OUT(L)
REC–OUT(R)
PB–IN
PB–IN PB–CAL PB–CAL PB–EQ PB–EQ PB–NF PB–NF PB–IN PB–IN
TAPE(R) AUX(L) AUX(R)
IREF
REC–SEL BCr ACr
HSP
A/B PB–OUT(L)
PB–OUT(R)
PB–CAL PB–CAL
REC IN
from logic
B(L) B(R)
to Dolby
REC–RETURN
Vcc
(R) (R) (L) (L)
A(R) A(R)
A(L) A(L)
VREF
B(R)
B(L)
R–ch
L–ch
R–ch
L–ch
12dB
139k
5k 2.7k 2.26k 1.12k
10k
B
A
B
A
•
Block Diagram