Y/C/Audio/Ccd/Head Amp Schematic Diagram - Toshiba MV20FL4 Service Manual

Color television/video cassette recorder
Table of Contents

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A
B
8
7
FROM POWER
P.CON+5V
GND
FROM/TO HIFI
NORMAL_A
Y/C_AUDIO
6
FSC
HF2
HF_COM
HF1
GND
FROM/TO CYL
CP4001
5
TOC-C09X-A1
9
HF1 (R)
8
HF COM
7
HF2 (L)
L4001
P.CON+5V
6
SP-CH1 (R)
22uH
5
SP COM
0305
4
SP-CH2 (L)
3
EP/LP-CH1 (R)
2
EP/LP COM
1
EP/LP-CH2 (L)
4
6.3V
3
R4055
NORMAL_A
10K
FROM/TO HEAD AUDIO CONTROL
P.CON+5V
CP4002
5.2
IMSA-9604S-06Z14
SW
0
V.REC_ST_H
Q4003
6
AUDIO PB
DTA124EKA
5.3
5
AUDIO REC
COIL,BIAS OSC
CTL+
4
CTL+
T4001
CTL-
1626009
3
CTL-
R4001
2
AE HEAD(-)
560
1
AE HEAD(+)
2
0
AUDIO
R4002
0.7
5
PB SW
Q4001
10K
KTC3198
0
AUDIO
FROM/TO FULL ERASE HEAD
PB SW
0
R4003
0.7
Q4002
CP4003
KTC3198
10K
TMC-T02X-E1
0
GND
2
FE HEAD(GND)
HOT
1
FE HEAD(HOT)
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A
B
C

Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM

S101X
S101Y
0.5
2.8
0
60
59
58
C4016
2.2
COMP OUT
ENV
AUDIO
KILL
DET
MUTE
0.068
B
DET
HA SW
0
HA
GND
4.0
C4019
CHROMA
DET
0.047
F
C4015
1.8
ACC
DET
0.047
F
0.7
P
0.7
R
0.7
H
P
L
5.0
HA VCC
1.7
1.8
0
HA
PRE GND
2.0
P
H
2.0
L
R
2.0
P
0
A-GND
2.2
C4020
1
W826
2
1 F
3
4.9
A-VCC
2.3
C4021
1 F
C4012
C4023
0
22
KA
6.3V
22
KA
2.0
SP,LP
R4056
Vref
2.3V
1
2
3
8.2K
C4075
2.2
2.2
2.3
2.2
Y/C/A/CCD/H.AMP IC
1 F
IC4001
L4008
LA71201M-MPB
100uH
BIAS CTL
Q4005
KTA1266
6
1
L4003
C4025
5
2
0
100uH
5.2
6.3V
470
YK
4
3
5.2
R4011
0
22K
BIAS OSC
C4010
Q4006
0
KTC3203_Y
0
6.3V
47
KA
R4062
6.8K
4.8
R4058
R4060
0
10M
0
AMP
Q4013
2.2K
2SC2412K
C
D
E
(SYSCON PCB)
BUFFER
5.0
Q4012
R4041
4.0
2SC2412K
1.8K
3.4
C4058
6.3V
47
KA
C4059
0.1 F
R4038
2
680K
NC
0
0
4.8
4.8
4.8
5.0
1.9
2.6
4.0
3.3
3.3
5.0
5.0
0
2.2
0.8
2.3
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
CLOCK
ALWAYS
VDD
4Fsc
C-ROT
C-GND
C-VCC
SERAIL
RF-SW
320FH
5V
SLD
VSS
VX01
B
PLL
IN
DECODER
VCO
P
R
TIMMING
OUT
OUT
REC
PB
REC
APC
APC
AFC
DRIVER
AUTO-BIAS
VSS
CCD
CLAMP
BEFORE
IN
R
P
BGA
BGA
AFTER
CNC
BGA
R
P
VCA
PB
VCA
P
R
AMP
3.58M
BPF2
CLAMP
B.D
Main
B-UP
C-LPF
CONV
P
AMP
VCP
3.58M
ACC
AMP
BPF1
1
P P
R
2
+
3
PB-C
ACC
REG
4.21M
DET
4V
VIDEO
BPF
AGC
YNR/COMB
Sub
P
R
R
CONV
P
1/2
R
BAL
DETAIL
CLAMP
N.L.
ENH
PB-C
FBC
TC1
P
DEEM
Y-LPF
R
NL
NL
Y/C
NC1
P
EMPHA
EMPHA
MIX
R
R
P
AGC
FM
TC2
MOD
R-EQ
NORMAL
QV/QH
6DB
TEST
DOUBBLE
FM
SUB
LIM
DEM
LPF
SYNC
ALC
SEP
R
LINE
REC
LPF
AMP
MAIN
P
FM-EQ
DE-EM
V.SYNC
SEP
ALC
FM
PB
DET
VREF
S-EQ
P R
FM EQ
P R
P R
AGC
Y-VCC
VHS
SOPB
REC
MUTE
PB,EE
AMP
PB,EE
EQ
REC:LP<EP
AMP
PHASE
PHASE
PB:EP
AUTO
FM
MAIN
B
BIAS
EQ
EQ
EMPHA
S
AGC
Y-GND
Q-ADJ
DET
fo-ADJ
FIL
FIL
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0
2.2
2.5
2.3
2.2
2.3
2.4
5.0
1.0
1.0
1.7
1.4
0
1.5
0.1
2.2
NC
R4068
47K 1/4W
R4021
22K
C4033
NC
0.0012 B
4
R4019
330K
C4029
0.01 B
NC
15.6KHZ TRAP
W837
L4007
2623003
R4059
NOTE:
THE DC VOLTAGE AT EACH PART WAS
10M 1/4W
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK
D
E
F
G
C4061
0.01 B
C4078
0.1 B
BUFFER
0
Q4010
1.7
2SA1037AK
1.7
0
2.3
0
3.0
R4034
C4048_1
82K
2.8
R4035
16V
10
KA
100K
3.1
C4052
C4049
50V
1
KA
3.1
S807X
S807Y
50V
4.7
KA
2.6
C4053
50V
1
KA
2.0
C4057
50V
1
KA
4.0
C4054
0.1
F
2.0
C4047
FRONT_VIDEO_IN
C4050
50V
1
KA
2.3
50V
1
KA
C4076
2.3
REAR_VIDEO_IN
50V
1
KA
1.6
C4051
6.3V
33
KA
1
2.9
R4032
R1025
Y/C_VIDEO
100
100
3.6
SD_VIDEO
0
DUMMY_V.SYNC
L4004
4.9
P.CON+5V
L4009
R4048
22uH 0305
2.8
C4046
5.0
180 1/4W
22uH
50V
1
KA
1.8
0305
BUFFER
0
Q4009
5.0
2SA1037AK
SYNC IN
R4026
C4043
Q4007
SD_SYNC
2SC2412K
39K 1/4W
2.8
0.1
B
R4029
0.7
47K
0
RECORD COLOR SIGNAL
AUDIO SIGNAL(REC)
AUDIO SIGNAL(PB)
RECORD LUMINANCE SIGNAL
PLAYBACK COLOR SIGNAL
DEFLECTION SIGNAL
PLAYBACK LUMINANCE SIGNAL
TUNER VIDEO SIGNAL
F
G
H
8
FROM/TO IN/OUT
7
FRONT_VIDEO_IN
REAR_VIDEO_IN
W823_1
Y/C_VIDEO
VIDEO_OUT
GND
FROM/TO MICON
Y/C_CLK
6
Y/C_DATA
Y/C_CS
H.SW
SD_VIDEO
ENV_DET
VCR_A_MUTE
CTL+
CTL-
C_ROTARY
DUMMY_V.SYNC
V.REC_ST_H
H.AMP_SW1
COMP
5
SD_SYNC
(S805)
GND
4
FROM/TO CHROMA/IF
MONITOR_V
TU1_VIDEO
3
VD
2
PCB010
VMA214
CAUTION: DIGITAL TRANSISTOR
1
H

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