Toshiba 15V31F Servicehandleiding - Pagina 22
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A
B
8
L206
SECAM VL SW
0.22uH
7
Q303
2SC2412K
0
R304
0.7
1K 1/4W
0.7
0
0
0
SECAM VL SW
SIF SAW FILTER IC
Q304
DTC124EKA
6
IN
IN
GND
1
2
3
D301
MA77
IF AMP
Q302
KTC3881S-RTK
0.3
R307
1.1
100K 1/4W
0.3
5
5.1
L302
C304
1.1
SIF PRE.AMP
Q301
0.22uH
0.001 B
KTC3881S-RTK
0.3
4
3
2
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
1
A
B
G-3
C
IF/CHROMA SCHEMATIC DIAGRAM
7.0
VIF PRE.AMP
C204
Q201
1.5
0.022 B
KTC3881S-RTK
0.9
CF202_1
J1981M
IN
IN
G
OUT
OUT
1
2
3
4
5
CF301
K9650M
R301
1K
OUT
OUT
4
5
2.5
2.5
3.0
3.2
2.8
2.5
2.5
1.4
2.1
0
4.0
5.0
1
2
3
4
5
6
7
8
9
10
11
12
56
55
54
53
52
51
50
49
48
47
46
45
1.9
4.0
0
5.1
4.9
4.9
4.1
0.7
0.9
5.7
5.6
8.0
R626
10K 1/4W
23
H CONT
Q601
24
2SC2412K
8.2
0
0.4
C
D
E
(MAIN PCB)
5.1
4.0
SIF BUFFER
Q204
3.3
2SC2412K
R206
1K
L204
10uH
R217
1K
CF201
TPWA02B
VCO
L202
3700005
14
13
12
NC
16
C201
15
3P CH
NC
3.5
2.1
3.9
3.9
8.0
3.7
0
3.2
2.7
3.2
1.7
1.9
2.5
2.5
13
14
15
16
17
18
19
20
21
22
23
24
25
26
44
43
42
41
40
39
38
37
36
35
34
33
32
31
4.4
0
5.0
2.4
1.5
1.5
2.9
0
4.0
4.0
4.0
3.8
2.3
2.3
22
20
D603
1SS133
D609 SB140-EIC
D605
MTZJ6.2B
D604
11E1-EIC
W839
R603
1K
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D
E
F
G
W823
11
C621
16V
10
KA
17
18
2.5
0
27
28
30
29
BUFFER
2.3
4.5
8.2
Q609
2SC2412K
4.5
3.9
19
21
CAUTION: DIGITAL TRANSISTOR
F
G
H
8
TO SOUND AMP
MONO_A_IN
7
FROM/TO 21PIN/AV SW
MONO_A_OUT1
TUNER_V_OUT
EXT_A_IN
SCART_V_IN1
SCART_V_IN2/Y
21_B
21_G
6
21_R
21_Y
FROM POWER
P.CON+5V
P.CON+8V
GND
5
FROM/TO DEFLECTION/CRT
G.OUT
R.OUT
B.OUT
VAMP
H_OUT
AFC
ABCL
V_OUT
4
FROM/TO MICON/TUNER
CVBS_TXT
OSD_B
OSD_G
OSD_R
OSD_FB
PROTECT
H_CONT
V_OUT
SCL
SDA
3
RF_AGC
SECAM_VL_H
IF
2
PCB010
TMC572
1
H
G-4