Rf) Section; Ac-3 (Rf) Section - Sony SDP-EP9ES Service Manual

SDP-EP9ES

—AC-3 (RF) SECTION—

J901
AC-3
BUFFER L.P.F.
RF
3
Q902 IC902
INPUT
IC902
BUFFER 6
Q904
IC904
3 1 MUTE SW
Q901
• Signal path
:RF (AC-3)
09
FILTER
FL902 IC906
BUFFER 9
1 1 6
Q903
4 9
COMPARATOR
IC903
IC906
7 13 10
+
2 COMPARATOR 7
5
+
7
- 6
AMP
IC904
RV901
NO ADJUSTMENT
— 19 —
DIGITAL SIGNAL PROCESSOR
(AC-3 RF DEMODULATOR)
IC901
8 DIN ERROR
82 DEMODULATION S/P
CORRECTOR
XIN DIGITAL
4
PLL
X902
46.08MHz
PDO
L.P.F. PHASE
57
IC905 COMPARATOR
V1
1 4 55 DIVIDER
X901
INVERTER
18.432MHz X LOCK
IC906
MUTI
78
DB0 - DB8
35 41 51 - 43
DATA - BUS DB0 - DB8
ADDRESS - BUS A0 - A14
10 - 3•25•24•21•23•2•26•1 27 22 27 22
11 - 13•15 - 19
A0 A14
I/O0 I/O7
S RAM
IC907
DAI DIGITAL DAOUT
65
CONTROL OUT
DIVIDER
CPU RESET
8
INTERFACE
MUTO
59
ADDRESS
GENERATOR
A0 A14
21 - 24•26•27•30•31•37•38•42•39•33•34
11 - 13•15 - 19 10 - 3•25•24•21•23•2•26•1
A0 A14
I/O0 I/O7
S RAM
IC908
— 20 —
C
DAO
D/A
SECTION
(Page 17)
AC. RST
G
CONTROL
SECTION
(Page 21)
MUTO