Toshiba VTW2187 Service Manual page 68

Color television/ video cassette recorder/ dvd video player
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A
B
8
7
VIDEO SW(Y) IC
IC1203
MM1504XNRE
C1221
2.6
Vin1
SW1
1
B
0
GND
V.OUT
C1203
W903
2.2
Vin2
Vcc
50V
1
KA
FROM/TO REGULATOR1
SW_OUT_Y
P.CON+8V_A
6
P.CON+9V
P.CON+5V_C
D1202
AT+5.6V
SB140-EIC
GND
5
W897
0
0.8
1.6
1
2
3
16
15
14
1.5
0
1.6
5.1
4
FROM/TO CHROMA/IF
DVD_Y
W908
SW_VIDEO_OUT
W801
SW_OUT_B
W802
SW_OUT_R
W812
SW_OUT_G
3
SW_OUT_Y
TEXT_SYNC
SWD_VIDEO
FROM/TO MICON
SCL
SDA
VCR/DVD
OSD_R
2
OSD_G
OSD_B
OSD_Y
TEXT_RESET
D1252
1SS133
1
A
B
G-19
C
T'TEXT/RGB SW SCHEMATIC DIAGRAM
0
2.8
L1202
8.1
100uH 0305
SYNC BUFFER
2SC3052-T1
0
0.8
0.8
0
1.5
4
5
6
7
8
C1202
13
12
11
10
9
0
1.5
0
1.6
16V
100
YK
C1273
16V
100
YK
C1274
16V
100
YK
4.8
W884
0.3
0
BLK
BUFFER
Q1262
2SC3052-T1
R1289
3.3K
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D
E
(VCR PCB)
L1203
5.1
3.1
BUFFER
10uH 0305
Q1101
3.8
KTD863_Y
R1115
560
3.8
BUFFER
Q1104
2SC3052-T1
0.9
R1108
0.4
820
L1205
10uH 0305
R1255
120
4.8
C1257
2.3
6.3V
47
KA
Q1253
1.7
R1251
100
R1256
100
R1280
100
B1201
W4BRH3.5X6X1.0
NOTE:THE DC VOLTAGE EACH PART WAS
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK.
D
E
F
G
0
0
0
0
0
3.4
3.4
1.4
0
3.4
52
51
50
49
48
47
46
45
44
0
CHIPSEL1
2.6
SCL
2.6
51 FLAG2
42 OSC OUT
SDA
52 CHIPSEL0
41 OSC IN
0.2
40 GND2V3
TDO
4.9
VDD5V1
0
T'TEXT IC
GND3V4
IC1201
0
ET-TVT0310A
GNDA1A
C1208
2.2
VREFP
0.1
F
1.3
C1209
VREFN
3.4
0.1
F
VDDA1
C1207
1.9
28 BLUE
VINP
27 BLANK
6.3V
47
KANP
0
GNDA1B
0
14
15
16
17
18
19
20
21
22
0
1.2
1.7
3.4
0
1.5
3.6
3.4
2.4
F
G
H
8
7
6
X1201
100CT01302
13875KHz
5
0.7
0.7
0
43
42
41
40
3.4
VDD3V1A
3.4
R1206
C1219
VDD3V1B
100
0.022 B
1.7
PLLRC1
C1220 0.1
F
0
GND3V1B
0
GND3V1A
0
4
GND3V5
5.0
VDD5V2
C1218
2.8
RSTB
1
F
0
R1211
D1201
MUTE
NC
560
1SS133
2.4
1/4W
RED
C1224
2.4
0.47
B
GREEN
2.4
2.5
3
23
24
25
26
0
2.6
0
0
R1210
10K
1/4W
2
PCB010
DMD027
1
H
G-20

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