Au Block Diagram - Sony KF-42WE620 Service Manual

AU BLOCK DIAGRAM

CN4702
SUR-L 8
SUR-R 6
L CH_OUT 10
R CH_OUT 12
SP-MUTE 13
SP-DC-DET 14
D AU-17V 15
GND 16
GND 17
To A(2/2) BOARD
AU+17V 18
CN8903
CLK 4
SDA 3
SET 9V 1
+9V
IC4703
+12V REG.
I O
+17V
IC4705
-12V REG.
I O
-17V
KF-42WE620/50WE620
IC4701
SURROUND PROCESSOR
LIN
64
FLIN OUTA
BBE/
62
16
RIN TONE
63
FRIN
61
RLIN BBE/ OUTB
60
36
TONE
RRIN
59 LFINB
35
LFINA
17
CIN
58
SWIN LFONA
57
BUFFER 18
I 2 C
LFOUTB
BUS I/F
BUFFER 34
28 22 23
+9V
+12V
-12V
IC4702
LPF POWER AMP
H-R IN
Q4712
3 1 7
BUFFER
Q4710
LPF
H-R IN
Q4713
5 7 11
BUFFER
Q4711
LPF
5 MUTE
Q4702,4703
MUTE
Q4709
Q4701
D4705
(SPEED UP)
Q4705
Q4704
+17V
INITIALMUTE
AU
IC4704
CN4703
H-R OUT
4 3 H-L(+)
(L)
4 H-L(-)
H-R OUT
1
2 H-R(+)
(R)
2
H-R(-)
+VS 3 +17V
6
H-L -VS -17V
Q4706,4707,4708
DC LEVEL DETECT
D4707
( AUDIO AMP )
KF-42WE620/50WE620
98