Toshiba VTV1403B User manual

SERVICE MANUAL
COLOR TELEVISION/
VIDEO CASSETTE RECORDER
FILE NO. 140-200227
VTV1403B

TV BLOCK DIAGRAM
CHROMA
IC601 STV2246C 22
13 44 47 25 26 27 28
6
7
8
55
14
11
51
52
30
36
35
34
31
49
32
37
48
42
40
46
X601
4.433619MHz
2
V-DRIVE IC401 TDA8174A
10
4
31
21_B
21_G
21_R
21_Y
DY
10 F
HV
FB401
2
31
7S
V801
CRT
8
7
9
3
J801
F
GREEN AMP
Q805 RED AMP
Q806
Q804
BLUE AMP
H-DRIVE
Q405 H.OUTPUT Q406
SW
Q601, Q611
PROTECT
TEXT_Y
HD
TEXT_B
TEXT_G
TEXT_R
T' TEXT
4
6
1
CF605
Q602
BUFFER
Y/C/AUDIO/
HEAD AMP/
21PIN/IN/OUT
13
4
CF601
TU601
5
4
1
11
Q607
PRE AMP
TUNER_A
TEXT_SYNC
TUNER_V
Y/C_A
JACK_V
SDA
SCL
T501
11
5
18
16
14
13
8
POWER REG IC
IC502
STR-G6653
IC506
LTV-817M-VB
FEED BACK
Q507
F-BACK SW
D501~D504
RECTIFIER
L503
DEGAUSS COIL
MICON/
OPERATION
F501
AC IN
CP851
5
6
3
7
AT+12V
1
5
4
1
9V REG. IC
IC1007
KIA78R09API P. CON+9V
9
5
SOUND AMP
IC352 AN7523
2
7
2
1
SP351
SPEAKER
J2201
HEAD PHONE
TV_POWER_H
VOL CTL
VCR_POWER_H
POWER_FAIL(DC)
MICON/
OPERATION
S-TRAP
VR502
10
2
4
12
5V REG. IC
IC1004
KIA78R05PI
4
12
5V REG. IC
IC1005
KIA78R05PI
P.CON+5V
3
1
REG. 1A IC
IC1001
KIA7805API
AT+5.6V
P.CON+5V A
SDA
SCL
FM_OUT
EXT_AUDIO_IN
AUDIO_OUT
PIFIN1
PIFIN2
RF_AGC_OUT
R. OUT
G. OUT
B. OUT
OSD_KB
OSD_B
OSD_G
OSD_R
BCL/SAF
LBF/SSC
H_OUT
X1/VAMP/CHR_OUT
XTAL1
INT_CVBS_OUT
CVBSOUT2
Y/C/VBS_IN3
VERT
B_EXT/U_EXT
G_EXT/Y_EXT
R_EXT/V_EXT
BLK_EXT
Y/C/AUDIO/
HEAD AMP/
21PIN/IN/OUT
MICON/
OPERATION
SWITCHING
Q403 H_CTL
MICON/
OPERATION
+B ADJ
11
VD
Q608
BUFFER
T'TEXT
E-1 E-2

Y/C/AUDIO/HEAD AMP/21PIN/IN/OUT BLOCK DIAGRAM
X4001
4.433619MHz
84
11 19
23
26
79 75 54
Y/C/AUDIO/CCD
HEAD AMP IC
IC4001
HA118217F
18
921
78 73
24
52
46
4
63
62
99
81
55
5860
R
P
35
39
42
2MLPF
HPF
ACC CTL TRAP
fh HPF
R
P
R
PVCA CCD
LPF C.K 6dB AMP 6dB AMP
N-->P
CLEAR
SYNC
C SQUELCH
SQUELCH
B.D
BPF
FBC
VIDEO ALC
DELAY CLPF
R
P
MAIN
CONV1 MAIN CONV2
CLPH
+
RP RP
R
P
R
P
+
B.E
C.K
TRAP
LPF
+
REC
MUTE
SERIAL CONT
INTERFACE
REC
EQ
VCA
LINE
AMP
R
P
HPF
1M HPF
7M HPF
FM MOD
LAG LEAD
LPF
629
TRAP FM AGC P.EQ S DL SQPB
SQPB
G EQ
Y CCD
C CCD
LPF
28
31
ATT
ATT
VIDEO
AGC
R
P
D LIM
DEMO
SLPF
MAIN
DE-EMPH CLAMP
D.E
N.C
Y APA
YNP
CLAMP
RP
MIX
LEVELADJ
R
P
RP
YLPF
FBC
ALC
NL EMPH
NL DE EMPH
MAIN EMPH
CARRIER
OFFSET
W.C/DC
F0/DEV ADJ
S-DET
Q4006
BUFFER
88
87
89
86
H.AMP
87
REC
MUTE
LINE
MUTE
ENV
DET
J4201
2
1
6
3
8
711
16
15
20
19
Q4207
PERI SW
Q4205
MUTE SW
L4001
15.6KHz
TRAP
Q4007
AMP
Q4202
BUFFER
D4210
L4005
1
3
6
Q4004, Q4005
FE HEAD
4
ENV_DET
H. SW
MICON/
OPERATION
SDA
SCL
VCR_A_MUTE
V. REC_ST_H
CTL+
CTL-
CYL.
CP4001
3
2
4SP_COM
SP-CH2 (L)
SP-CH1 (R)
CP4005
1
AUDIO PB6
5
2AE HEAD (+)
AUDIO REC
AE HEAD (-)
HEAD AUDIO
CONTROL 4
3CTL+
CTL-
PB SW
5
Q4002
OSC
Q4001
NORMAL A.
REC ST SW
CP4004
1
2FE HEAD (HOT)
FE HEAD (GND)
TU_AUDIO_MUTE_H
MICON/
OPERATION
EXT_IN_L
21_R
21_G
TV 21_B
21_Y
TV
TUNER_A
TUNER_V
Y/C_V
Y/C_A
Q4003
V.REC
ST SW
2PRE
AMP
44
69
CLOCK
DEIVER
50
SYNC.
SEP C. SYNC MICON/
OPERATION
VV_H
JACK_V
Q4015
PB SW 29 AGC
30
ATT
T'TEXT
FRONT_A_IN_L
FRONT_V_IN
PDC/VPD DECODER
IC4002 SDA5650/X
54
17
E-3 E-4

MICON BLOCK DIAGRAM
9
87
83
VCR_POWER_ON-H
CFG
CAP_FULL
LDM_CTL
SYSCON/TIMER/SERVO
IC1006 OEC0107B
104 DFG/DPG
88
84
CAP_FWD_L
CAP_LIMIT
50
40
39
REEL-T
REEL-S
TAB_SW
SW1001
5
4I LIMIT
CAP.M F/R
2CAP VCO
CP1001
1
3
4
2
1
3
4
2
REEL SENS.
Q1005
REEL SENS.
Q1001
DECK
Q1007
BUFFER
91
89
V.REC.START-H
VV-H
OSC2
80
75 X2
37
POWER_FAIL
62
IIC_DATA_0
78 OSC1
76 X1
61
4
CTL(-)
3
CTL(+)
15
48
47
REC/OTR_ LED
T-REC_LED
33KEY_A
34
KEY_B
77
/RES
CH DOWN
CH UP VOL. UP VOL. DOWN
POWER
ON/OFF
REC/OTR STOP/EJECT PLAY FF/CUE REW/REV
X1001
10MHz
X1002
32.768KHz
1 OUT SYSTEM RESET
IC1003
R3111N311A/C
6
5 SDA
SCL
EEP ROM
IC1099
S-24C08ADPA-01
POWER_FAIL (DC)
SCL
SDA
SCL
CTL+
VV-H
CTL-
V. REC_ST_H
SDA
OSD_Y
VD
OSD_G
OSD_B
OSD_R
TV
90
VCR_MUTE VCR_A_MUTE
105
VIDEO_H.SW H. SW
43REMOCON IN
3
2
1
OS2201
AT + 5V
D2204 D2203
D2201
28
VIDEO_ ENV ENV_DET
B
VSYNC
G
R
YCO
Q1015
VD SW
TV
Y/C/AUDIO/
HEAD AMP/
21PIN/IN/OUT
1CAP FG
AT+12V
85
VOLUME_PWM VOL_CTL
54EXT_IN-L EXT_IN_L
11
10 CYL FG/PG
LDM CTL
9CAP CTL
8CYL/LAD VCO
12 CYL CTL 107 DRUM_PWM
35
27
BOT
EOT
D1003 Q1017
BOT SENSOR
Q1006
EOT SENSOR
101
100
99
96
52
32
31
CENT LED
MSSEN_B
MSSEN_A
14
3
2
14
3
2
MS_SEN A
Q1009
MS_SEN B
Q1003
AT+5.6V
P.CON+5V_A
51
TEXT RESET
IIC_CLK_0
TEXT_RESET
T' TEXT
45STAND BY
93TV_POWER_ON-H TV_POWER-H TV
T' TEXT
VCR_POWER_H
TV
P.CON+5V
POWER ON
SW
Q2201
CENT LED
SW
Q1002
95
98
92
H CONTROL
PROTECT
H_CTL
PROTECT
14 HD
HSYNC Q1016
HD SW
38
SYNC IN
55
TUNER MUTE TU_AUDIO_MUTE_H
C. SYNC
SDA
SCL
2
FRONT AUDIO JACK
J2202
2
FRONT VIDEO JACK
J2203
FRONT_A_IN_L
FRONT_V_IN
Y/C/AUDIO/
HEAD AMP/
21PIN/IN/OUT
E-5 E-6

2SCL
T'TEXT
IC1201 ET-TVT008B
32
19
28
SYNC
BLUE
RSTB
T' TEXT BLOCK DIAGRAM
TEXT_Y
MICON/
OPERATION
Q1253
SYNC
BUFFER
TEXT_SYNC
27
3
BLANK
SDA
3568
TRIPLE ANALOG MPXER IC
IC1202
MM1231XF
29 GREEN
41
42
X1201
13875KHz
114 927
16 11
TEXT_RESET
OSD_B
OSD_R
OSD_G
OSD_Y
OUT1
TEXT_B
TEXT_R
TEXT_G
TV
12
IN 1B IN 2B
IN 3B
SW1 SW3
SW2
OUT2
OUT3
IN1A IN2A IN3A
Q1262
BLK
BUFFER
30 RED
SDA
SCL
OSC IN
OSC OUT
20VIDEO IN Y/C/AUDIO/
HEAD AMP/
21PIN/IN/OUT
Y/C_V
E-7 E-8