TV-20F242
TV-20F242
No.51768
No.51768
'
2-15
2-16
[SYSCON PCB Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM]
A
B
C
D
E
F
G
H
A
B
C
D
E
F
G
H
2
1
3
4
5
6
7
8
2
1
3
4
5
6
7
8
L4004 2623003
15.6KHZ TRAP
1
2
3
4
6
L4007
100uH
Q4010
2SC2412K
BUFFER
Q4004
2SC2412K
BUFFER
Q4006
2SD734
BIAS OSC
Q604
2SC2412K
BUFFER
Q4002
2SC3331
AUDIO
PB SW
Q4001
2SC3331
AUDIO
PB SW
Q4008
2SC2412K
EP SW
Q4009
2SA1037K
BUFFER
Q4007
2SA1037AK
BUFFER
Q4005
2SA1318
BIAS CTL
X4001
100CF3R512
3.579545MHz
C4004_1
100
16V
KA
C4058
22
6.3V
KA
C4010
47
6.3V
KA
C4017
1
50V
KA
C4016
4.7
25V
KA
C4024
4.7
25V
KA
C4011
1
50V KA
C4043
1
50V
KA
C4034
1
50V
KA
C4003_1
0.1
B
C4094
1
(W333)
F
C4025
0.0022
B
C4069
0.001 B
C4086
0.1
B
C4014
0.056
B
C4047
22P CH
C4049
180P
CH
C4028
0.1
B
C4029
0.047
F
C732_1
270 CH
C4050
0.01
F
C4044
0.1
F
C4048
0.01
B
C4084
0.1
B
C4089
0.1 F
C4083
0.1
B
C4038
0.1
F
C4006
0.015
B
C4005
0.01
B
C4009 0.1 F
C4018
0.0012
B
C4027
820P
CH
C4053
0.01 B
C4072
0.1
B
C4002
0.01 B
C4077
27P
CH
C4015
0.022
100V
TF
C4020
0.01 B
C4052 0.01 B
C4088
0.1 B
C4032
0.022
B
C4041
390P
CH
C4066
1F
C4065
1F
C4073
1F
C4036
0.022
B
C4074
470P
CH
C4068
0.0018
B
R4054
2.7K
R4085
39K
R4034
820
R4081
100
1/4W
R4049
1.5K
R4048
4.7K
R4029
2.2M
R4041_1
6.8K
R704_1
270
1/4W
R4065
2.2K
R4061
1M
1/4W
R4050
100K
R4013
18K
R4008
10K
R4060
220K
R4062
220K
R4033
1K
R4010
3.3K
R4020
10K
R4001
820
R4009 3.9K
R4032
27K
R4071
1.8K
R4021
2.7K
R4004
2.7K
R4015
2.2
1
/4W
R4022
6.8K
R4023
15K
R4025
330K
R4027
150
R4079
100
1/4W
R4077
100
R4074
1K 1/4W
R4063
3.3M
R4058
1M 1/4W
R4057 2.2K
R4052
68 1/4W
R4055 10K
R4078 100
R4039
33K
R4068
47K
1/4W
R4076
100
R4075
100
R4064
100
R4067
47K
1/4W
R4069
47K
R4005
1.5K
R4024
10K
R4026_1
33K
R4019
82K
R4059
680K
R4051
27K
R4044
8.2K
R4003
10K
R4002
10K
R4047
10K
R4053
1.5K
R4011
22K
R4046
1.8K
R4014
1.8K
R4007
680
R4072
12K
R4012
18K
C4008
100
6.3V
KA
C4023
22
6.3V
KA
C4021
33
6.3V
KA
C4075
10
16V
KA
C4057
33
16V
KA
C4059
4.7
25V
KA
C4026
100
6.3V
KA
C4022
22
16V
KA
C4061
1
50V KA
C4007
1
50V KA
C4035
100
6.3V
KA
C4070
47
6.3V
KA
C4060
1
50V
KA
C4033
2.2
50V
KA
C4071
1
50V KA
C4062
1
50V KA
C4037
1
50V
KA
C4031
2.2
50V
KA
C4030
10
16V
KA
C4039
1
50V
KA
W846
W923
W902
W893
W821
W830
W831
W863
W823_1
W896
W925
W944
W900
L4010
100uH
0305
L4001
22uH 0305
L4003
100uH
L4005
22uH
0305
L4002
47uH
0305
L4009
100uH
0305
D4003 MTZJ13B
D4004
MTZJ13B
TP4001
IC4001
LA71067SM-MPB
Y/C/A/CCD/H.AMP
1
1
0
100
11
12
13
14
15
16
17
18
19
2
20
21
22
23
24
25
26
27
28
29
3
30
31
32
33
34
35
36
37
38
39
4
40
41
42
43
44
45
46
47
48
49
5
50
51
52
53
54
55
56
57
58
59
6
60
61
62
63
64
65
66
67
68
69
7
70
71
72
73
74
75
76
77
78
79
8
80
81
82
83
84
85
86
87
88
89
9
90
91
92
93
94
95
96
97
98
99
CP4003
TMC-T02X-E1
1
2
CP4001 TOC-C09X-A1
1
2
3
4
5
6
7
8
9
T4001
1626007
1
2
3
4
5
6
CP4002
IMSA-9604S-06Z14
1
2
3
4
5
6
Q4003
DTA124ES
SW
DURING PLAYBACK
MEASURED WITH THE DIGITAL TESTER
NOTE:
THE DC VOLTAGE AT EACH PART WAS
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
CAUTION: DIGITAL TRANSISTOR
B4004
BL01RN1-A63
(W216)
B4005
BL01RN1-A63
(W163)
B4002
BL02RN1-R62
B4003
BL01RN1-A63
(W158)
S819X
S810Y
S810X
S102X
S808X
S808Y
S816X
S816Y
S818X
S818Y
S102Y
AUDIO SIGNAL(REC)
TUNER VIDEO SIGNAL
PLAYBACK COLOR SIGNAL
PLAYBACK LUMINANCE SIGNAL
LUMINANCE SIGNAL
COLOR SIGNAL
AUDIO SIGNAL(PB)
P.CON+5V
P.CON+5V
NORMAL_A
SP/LP/EP-H
INPUT_SEL
GND
NORMAL_A
Y/C_AUDIO
FRONT_VIDEO_IN
FSC
REAR_VIDEO_IN
GND
GND
HF2
HF_COM
FSC
HF1
VIDEO_OUT
MONITOR_V
TU1_VIDEO
SP/LP/EP-H
TRICK_PB-H/EE-H
P.CON+5V
V.REC_ST_H
C_ROTARY
VCR_A_MUTE
REC/EE/PB
DUMMY_V.SYNC
CTL-
FRONT_VIDEO_IN
CTL+
DOC_XO_CTL
ENV_DET
REAR_VIDEO_IN
INPUT_SEL
H.AMP_SW1
COMP
ENV_DET
COMP
H.SW
SD_VIDEO
Y/C_AUDIO
V.SYNC
P.CON+5V
DUMMY_V.SYNC
P.CON+5V
SD_VIDEO
CTL+
V.REC_ST_H
CTL-
V.SYNC
TRICK_PB-H/EE-H
V.REC_ST_H
VCR_A_MUTE
DOC_XO_CTL
SP/LP/EP-H
H.AMP_SW1
REC/EE/PB
C_ROTARY
P.CON+5V
H.SW
13
(SYSCON PCB)
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM
2.3
2.6
2.8
FROM/TO I/O
NC
NC
FROM/TO CHROMA/IF
2.2
2.6
0
0
0
5.1
0
0
0
2.5
2.4
5.1
0
0.3
2.8
4.6
0
1.0
0
1.8
1.8
1.8
1.8
5.1
0
1.8
1.8
1.8
1.8
0
2.4 2.4 2.4
0 2.4 5.0 2.3 2.3 2.8 2.3 1.5 2.0
0
0 1.4 4.0 2.3 2.2 3.0 4.1 3.4 4.9 3.4 5.0 5.0
5.0 4.2 2.3 0.1
0
2.2
0
2.7
2.5
3.0
3.2
2.8
2.8
4.9
2.8
3.5
2.5
1.5
1.0
3.0
4.8
1.0
2.1
0
2.8
3.4
2.0
0.2
1.0
5.0
1.6
0
4.9
0
0
0.8
0.8
0.8
0
0
5.0
NC
5.0
1.5
2.4
2.4
0
2.4
2.4
2.4
2.4
VIDEO OUT
AFC
DET
SYNC
AUTO-BIAS
VSS
VSS
R
P
TIMMING
ACC
AMP
PB
H.A
CH3
OUT
REC SP
OUT
REC EP
ALC-LEVEL
PB-Y
R
P
NC1
DEEN
N.L.
MIX
Y/C
PB-C
1
3
2
R
P
P
R
AFTER
BEFORE
R
P
R
P
KIL
R
P
NOMAL
HA TEST
P
R
R
P
R
P
TEST
R
P
R
NOMAL
VHS
SQPB
SW
SW
H.AMP
H.AMP
L
H
CH1
CH2
CH4
L
H
L
H
H.A GND
Y-Vcc
Y-GND
4Fsc
IN
OUT
C.SYNC
BGA
BGA
TEST
R-EQ
PHASE-EQ
PB
CLOCK
PULL
OUT
CCD
DRIVER
FM-EQ
S-EQ
AFC
REC
APC
PB
APC
REC
BPF1
3.58M
BPF2
3.58M
CONV
V/I
DEM
FM
SUB
LPF
ENH
DETAIL
EMPHA
NL
LIM
DOUBLE
Y-LPF
YNR/COMB
INS.
Chara
6DB
SEP
SYNC
1/2
FBC
TC2
AGC
V-AGC
CLAMP
VCP
CLAMP
VCA
CLAMP
VDD
C-VCC
5V
ALWAYS
SLD
VCO
320FH
VX01
C-LPF
BGA DET
ACC
AMP
B-UP
C-GND
REG
DET
KIL
KIL
KIL
B.D.
GCA
AMP
CONV
Main
BPF
4.21M
BALANCER
CONV
Sub
MOD
FM
REC
FM-EQ
DC
WC
FM
AGC
DELAY
FM-EQ
PB
+
AMP
AGC
IN
IN
AMP
CTL
R
HA SW
C ROT
RF SW
MUTE
AUDIO
R/P
R/P
AUDIO
R/P
Y/C
FILT
REC AGC
COMP OUT
ENV DET
H.A VCC
H.A GND
AMP
LINE
BIAS
AUTO
MUTE
A.GND
P
A-Vcc
2.3V
Vref
ALC
/EE
PB
Vref
AMP
REC:
EP/LP
PB:EP
REC
PB/EE
AMP
EQ
NC
NC
NC
NC
NC
0
0
0
FROM/TO MICON
NC
5.2
5.2
0
PCB010
VMX188
EP/LP-CH2 (L)
EP/LP-CH1 (R)
SP-CH1 (R)
SP COM
SP-CH2 (L)
EP/LP COM
FROM/TO CYL/MOTOR
AUDIO PB
CTL-
CTL+
AUDIO REC
0
5.0
4.6
4.4
0
0.4
11
2.2
2.3
4.2
4.7
HF COM
HF2 (L)
HF1 (R)
2.6
5.1
0
5.2
5.3
0.7
0.7
0
FROM/TO POWER
14
2.0
AE HEAD(-)
AE HEAD(+)
FE HEAD(GND)
FE HEAD(HOT)
FROM/TO HIFI
12
FROM/TO A/C HEAD
FROM/TO F/E HEAD