FUNAI 29D-850, Service Manual

Page: 21 / 53

1-9-4
Hi-Fi Audio Block Diagram
HK4F8BLH
ENV DET
LOGIC
R L
HOLD PULSE
LIM
OUTPUT SELECT
REC-AUDIO SIGNAL
PB-AUDIO SIGNAL
Mode : SP/REC
IIC-BUS SDA IIC-BUS SCL
A-MODE
LINE-MUTE
MUTE
MUTE-ON MUTE-ON
Hi-Fi-H-SW
JK758 AUDIO(R) -IN
N-A-REC
TO AUDIO BLOCK
N-A-PB
JK757 AUDIO(L) -IN
AFV CBA
TU-A
UDIO(R)
4
TU-A
UDIO(L)
5
4 5
CN701
C
N
1
CN701
CN1
TU701
AUDIO IN
SIF OUT
2
22
JACK CBA
MAIN CBA
JK101
AUDIO(R)-IN1 AUDIO(L)-IN1 AUDIO(R)-OUT1 AUDIO(L)-OUT1 AUDIO(R)-IN2 AUDIO(L)-IN2 AUDIO(R)-OUT2 AUDIO(L)-OUT2
2 6 2 6 1 3 1 3
JK102
CN151 CN152
CN101 CN102
(Hi-Fi A
UDIO SIGNAL PR
OCESS)
9 8
9
8
6
11
6
11
A
U
DIO(R)-IN1
9
A
U
DIO(L)-IN1
7
9
7
A
U
DIO(R)-OUT1
5
A
UDIO(L)-OUT1
A
U
DIO(R)-IN2
A
U
DIO(L)-IN2
A
UDIO(R)-OUT2
A
U
DIO(L)-OUT2
11
5
11
IC451
Hi-Fi AUDIO (R) HEAD Hi-Fi AUDIO (L) HEAD
CYLINDER ASSEMBLY
Hi-Fi-
A
U
DIO(R)
7
Hi-Fi
-COM
8
Hi-Fi-
A
U
DIO(L)
9
CN253
48
47
14
15
R-CH INSEL
L-CH INSEL
ALC SW
SW ALC
62 61
71 70
24 26 27
34
33
L-CH BPF
COMP
SW NOISE
COMP
SW NOISE
R-CH BPF
VCO LPF
LIM
DEV
VCO LPF
LIM
DEV
MIX
V/I
NOISE DET
DO DET
P P R R
VCO
MUTE
73 74 72 76 77 75
37 38
21 53
39
L-CH PNR
ALC
R-CH PNR
ALC
67 65 52 56 54 50 60
2 6
10
8 4
78 80
+
Q451
FR
OM/T
O
SER
V
O/SYSTEM
CONTR
OL BLOCK
(DECK ASSEMBLY)
FR
ONT
JK751
AUDIO(L) -OUT AUDIO(R) -OUT
SUB JACK CBA
CN509
A
U
DIO(L)-OUT1
2
A
U
DIO(R)-OUT1
1
(TUNER UNIT)
SIF
2
2
IF SIGNAL PROCESS