Y/C/Audio/Head Amp - Toshiba MV19N2 Service Manual

A B
8
FROM POWER
7
P.CON+5V
GND
W858
NC
6
5
L4001
P.CON+5V
22uH 0305
FROM/TO CYL
CP4001_1
4
TOC-C04X-B1
4 SP-CH1 (R)
3 SP_COM
2 SP-CH2 (L)
1
TU_AUDIO
R4004
P.CON+5V
15 1/4W
FRONT_AUDIO
C4012
6.3V
3
FROM/TO HEAD AUDIO CONTROL
P.CON+5V
CP4002
5.2
IMSA-9604S-06Z14 SW
0
V.REC_ST_H Q4003
6 AUDIO_REC
KRA103SRTK
5.3
5 AUDIO_PB
CTL+
4 CTL+
CTL-
3 CTL-
R4001
2 AE_HEAD(+)
560
1 AE_HEAD(-)
2
0
AUDIO PB SW
R4002
0.7 5
Q4001
10K
KTC3198
TO FULL ERASE HEAD
0
CP4003
0
B2013H02-2P AUDIO PB SW
R4003
0.7
GND Q4002
2 GND
KTC3198 10K
HOT
1 AE_HEAD(-) 0
GND
1
A B
G-1
C
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM
0.5 2.8 0 0
60 59 58 57
2.2
C4016 COMP OUT
ENV AUDIO C-ROT C-GND
KILL DET MUTE RF-SW
0.068 B DET HA SW IN
0
HA
GND
C4019 4.0
CHROMA
DET
0.047 F
C4015 1.8
ACC
DET
0.047 F
0.7
P
0.7
NC R
0.7 H
P L
NC
5.0
HA VCC
R4064 1.7
R4012
6.8K
1.8
820
0
HA
PRE GND
2.0
H
P
2.0 L
R
2.0
P
0
A-GND
R4052
R4007 C4020 2.2
8.2K
1
2 ALC
39K 1/4W 0.1 F
4.9 3
A-VCC
2.3
R4006 C4021 ALC
NC DET
R4053
47K 1/4W 0.1 F
C4023
6.8K 0
22 KA D4002 EQ
6.3V 22 KA
2.0
AMP
SP,LP
Vref
2.3V
MTZJ13B
1 2 3 4
Y/C/AUDIO/HEAD AMP IC
2.2 2.2 2.3 2.2 2.2
IC4001
LA71206M-MPB
COIL,BIAS OSC
T4001
BIAS CTL
1626009
Q4005
C4025
6 1 L4003
KTA1266
6.3V 220 YK R4019
5 2
0 5.2
100uH 330K
4 3
0305
5.2
C4029_1
R4011
0
BIAS OSC 0.015 B
22K
Q4006
0
KTC3203_Y
0
C4010
6.3V 47 KA
W908
CAUTION: DIGITAL TRANSISTOR
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
C
D E
(SYSCON PCB)
BUFFER
Q4012
2SC2412K
R4041 5.0
4.0
1.8K
3.4
2
C4058
6.3V 47 KA
C4059
0.1 F
R4038 C4061
680K 0.01 F
NC
0 4.8 4.8 4.8 5.0 1.9 2.6 4.0 3.3 3.3 2.3 5.0 5.0 0 2.2 0.8
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
CLOCK
ALWAYS VDD 4Fsc 0
C-VCC
SERAIL
320FH 5V
SLD VSS
VX01 B PLL
VCO
DECODER
1.7
R
P TIMMING OUT
OUT
0
REC PB REC
APC APC AFC DRIVER AUTO-BIAS
VSS
3.0
CCD CLAMP
BEFORE
IN
R P BGA
BGA 2.8
AFTER
CNC
BGA
R P VCA 3.1
PB VCA
AMP
P R
3.58M
3.1
BPF2
CLAMP
B.D
Main B-UP
C-LPF
2.6
CONV AMP P
VCP
3.58M
ACC 2.0
AMP BPF1 1
P P R
2
+ 3
4.0
PB-C
ACC REG
4.21M
DET 4V
VIDEO 2.0
BPF
AGC
YNR/COMB
NC
Sub
P R R
CONV
P
1/2
BAL 2.3
DETAIL R
N.L.
CLAMP
PB-C FBC TC1
ENH DEEM
P
Y-LPF 2.3
R
NL NL Y/C
NC1 P
EMPHA EMPHA
R MIX
R
1.6
P
AGC
FM TC2
MOD
2.9
R-EQ
NORMAL QV/QH 6DB
TEST
DOUBBLE
FM SUB
LIM DEM LPF
3.6
SYNC
SEP
R
LINE
LPF REC
P AMP MAIN
FM-EQ 0
DE-EM V.SYNC
SEP
PB 4.9
FM
S-EQ
VREF P R
P R AGC FM EQ P R Y-VCC
VHS SOPB
REC
MUTE 2.8
PB,EE AMP
PB,EE
REC:LP<EP
1.8
PHASE PHASE MAIN
PB:EP AUTO FM
EQ EQ S B
BIAS AGC EMPHA
Y-GND
fo-ADJ Q-ADJ FIL FIL DET
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
0 1.5
2.5 2.3 2.2 2.3 2.4 5.0 1.0 1.0 1.7 1.4 0 0.1 2.2
NC
3
R4021
27K
V.ENV
C4033
TP4001
820P B 4
W882
BUFFER
R4065
Q4011
2SC2412K
4.9
4.7M
R4059
0.6
10M
0
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D E
F G
BUFFER
Q4010
2SA1037AK
1.7
0 2.3
R4034
C4048 82K
R4035
16V 10 KA C4052 100K
C4049 50V 4.7 KA
R4062
3.3M
16V 10 KA
C4053
C4057
50V 4.7 KA TU_VIDEO
1 F
C4054
0.1 F C4047
FRONT_VIDEO
D4001
16V 10 KA MTZJ13B
C4050
L4009
R4048
0.22 B P.CON+5V
68 1/4W 100uH 0305
R4060 1.5M
W885
C4051 1
R4032 R1025
6.3V 33 KA Y/C_VIDEO
100 1/4W 100
SD_VIDEO
DUMMY_V.SYNC
P.CON+5V
C4046
5.0
0 BUFFER
50V 3.3 KA
Q4009
W888
2SA1037AK
5.0
R4026 C4043
SD_SYNC
39K 0.1 F
2.8
R4029
0.7
47K 1/4W
0
SYNC IN
Q4007
2SC2412K
W873
F G
H
8
FROM AV
FRONT_VIDEO
7
FRONT_AUDIO
GND
FROM/TO IN/OUT
Y/C_AUDIO
Y/C_VIDEO
FROM/TO MICON
Y/C_CLK 6
Y/C_DATA
Y/C_CS
V.REC_ST_H
VCR_A_MUTE
DUMMY_V.SYNC
CTL-
CTL+
H.AMP_SW1
COMP
ENV_DET
H.SW
5
SD_VIDEO
SD_SYNC
4
FROM/TO CHROMA/IF
TU_VIDEO
TU_AUDIO
SD_VIDEO
3
Y/C_AUDIO
VD
PLAYBACK LUMINANCE SIGNAL
PLAYBACK COLOR SIGNAL
RECORD LUMINANCE SIGNAL
RECORD COLOR SIGNAL
PLAYBACK VIDEO SIGNAL
2
TUNER VIDEO SIGNAL
AUDIO SIGNAL(PB)
AUDIO SIGNAL(REC)
DEFLECTION SIGNAL
PCB010
VMB281
1
H
G-2