FUNAI 29B-250 - Page 18

Hi-Fi Audio Block Diagram ( B )
HG454BLH
1-7-5
ENV DET
LOGIC
R L
HOLD PULSE
LIM
OUTPUT SELECT
REC-AUDIO SIGNALPB-AUDIO SIGNAL Mode : SP/REC
IIC-BUS SDA
IIC-BUS SCL
A-MODE
LINE-MUTE
MUTE
MUTE-ON MUTE-ON
Hi-Fi-H-SW
IF SIGNAL PROCESS
JK758 A-IN(R)
N-A-REC
TO AUDIO BLOCK
N-A-PB
JK757 A-IN(L)
AFV CBA
TU-AUDIO(R)
4
TU-AUDIO(L)
5
4
5
CN701 CN1
SIF
2
2
CN701
CN1
TU701 SIF OUT
22
JACK CBA
MAIN CBA
JK101
A-IN1(R) A-IN1(L)
2 6 2 6 1 3 1 3
JK102
CN151 CN152
CN101 CN102
A-IN2(R) A-IN2(L)
A-OUT1(R) A-OUT1(L) A-OUT2(R) A-OUT2(L)
A-IN2(R)
(Hi-Fi AUDIO SIGNAL PROCESS)
9
A-IN2(L) 8
9
8
A-OUT2(R)
6
A-OUT2(L) 11
6
11
A-IN1(R)
9
A-IN1(L) 7
9
7
A-OUT1(R)
5
A-OUT1(L) 11
5
11
IC451
Hi-Fi AUDIO (R) HEAD Hi-Fi AUDIO (L) HEAD
CYLINDER ASSEMBLY
Hi-Fi-
A(R) 7
Hi-Fi
-COM 8
Hi-Fi-
A(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
TO SERVO/SYSTEM CONTROL BLOCK
(DECK ASSEMBLY)
FRONT
JK751
A-OUT (L) A-OUT (R)
SUB JACK CBA
CN509
A-OUT1(L)
2
A-OUT1(R)
1
(TUNER UNIT)
Comparison Chart of Models & Marks
Model Mark
29B-250 29B-750
A B