Y/C/AUDIO/HEAD AMP/IN/OUT BLOCK DIAGRAM
X4001
3.579545MHz
COMP
OUT
71
64
18
19
63 61
59
98
97 76
54
49
21
20
51
72
17
96
46
82
84
85
24
88
23
45
57
52
100
30
1
4
3
43
41
38
36
34
32
31
29
99
6
7
5
78 80
ENV
DET
REC FM
AGC2
DECODER
SERIAL
CTL
PB EQ
AMP
EQ
PB/EE
AUTO
BIAS
REC
AMP
LINE
AMP
P
R
MUTE
ALC
DAT
ALC
PB_FM
AGC
REC
FM-AGC
S-EQ
PB_FM
EQ
S
N
TH
W/D
CLIP
DOUBLE
LIM
NL
EMPHA
DETAIL
ENH
FM
DEM
FM
DEM
P
R
P
R
CLAMP
P
R
SYNC
SEP
6DB
FBC
R
P
EE
AGC
P
R
KIL
Sub
CONV
VXO
XO
320FH
VCO
Main
CONV
BPF2
P
R
C COMB
CLK
-IN
Y_DELAY
KIL
DET
VXO
APC
PB
APC
REC
COMB
AMP
PB BGA
BEFORE
P
R
AFTER
BEFORE
PB BGA
AFTER
REC
BGA
P
R
B_UP
AMP
ACC
1/2
Y/C
MIX
PIC_CTL
ANR
N.C.1
NL DE
EMP
Y.N.R
CLAMP
P
R
C-LPF
P
R
P
R
P
R
Q4003
SW
BIAS OSD
L4003
Q4005
DRIVER
Q4009
BUFFER
Q4007
AMP
CP4001
6
5
4
SP CH1 (R)
SP COM
SP CH2 (L)
CYL
FE HEAD (HOT)
SCL
FE HEAD (GND)
SDA
MICON/
POWER
2
1
CP4004
FE HEAD
CP4005
6
5
4
AUDIO PB
AUDIO REC
CTL+
HEAD
AUDIO
CONTROL
3
2
1
AE HEAD(-)
AE HEAD(+)
CTL-
Q4001, Q4002
AUDIO PB SW
CTL+
CTL-
Q4010
BUFFER
5
L4001
15.6KHz TRAP
6
4
IN OUT
AUDIO
GND
2
3
1
IN OUT
VIDEO
GND
J4201
Q4011
BUFFER
Q4212
BUFFER
Q4210
MUTE SW
TU_VIDEO
TU_AUDIO
Y/C_AUDIO
Y/C_VIDEO
EXT_MUTE
TV
90
91
94
Q4004
BUFFER
COMP
11
H.SW
5
4
2
3
Q4006
BIAS OSC
SD_VIDEO
FRONT_VIDEO
FRONT_AUDIO
Q4013
SW
V.REC_ST_H
16
Y-VCC
MICON/
POWER
Q4012
BUFFER
Y/C/A/H.AMP
IC4001
LA71170M-MPB
3 EP/LP CH1 (R)
2 EP/LP COM
1 EP/LP-CH2 (L)