Toshiba 19A25 Manual de serviço - Página 21
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A
B
1
2
3
4
8
8
7
6
5
C118
7
6.3V
100
KA
C101
0.01 F
AT+5V
SDA
1 CNVSS
41 NC
2 XIN
42 HVCO F/B
SCL
3 XOUT
43 AFC FILTER
4 TEST1
44 DEF GND
5 VSS
45 FBP IN
6
6 MCU VCC
46 H OUT
7 TEST0
47 DEF VCC
AFT
8 FILT
48 NC
R112
2.2K 1/4W
9 HLT
49 HI VCC
KEY1
10 VHOLD
50 R OUT
R113
2.2K 1/4W
11 CVIN
51 G OUT
KEY2
R116
2.2K
12 RESET IN
52 B OUT
POWER_ON
13 MCU RESET OUT
53 ACL
R115
22K
14 Y SW OUT
54 NC
REMOCON
15 V/C GND
55 PROTECT
16 3.58 XTAL
56 SDA
17 C-APC
57 H_CTL
5
18 MCU5.7V REG OUT
58 SCL
19 NC
59 NC
AUDIO_MUTE
20 CVBS IN3
60 NC
21 AUDIO IN3
61 NC
X-RAY
R125
22 V/C VCC
62 DEGAUSS_H
R127
47K
IIC_OFF
23 MCU TEST
63 STANDBY_H
1K
24 CVBS IN2
64 VOLUME
ON_TIMER
25 AUDIO IN2
65 NC
26 CVBS IN1
66 AFT
27 AUDIO IN1
67 KEY1
POWER_FAIL
28 5.7V REG OUT
68 KEY2
29 C(Y/C) IN
69 POWER_ON
4
30 Y(Y/C) IN
70 REMOCON
31 VREG VCC
71 AV2
32 FSC OUT
72 AV1
33 MONITOR OUT
73 AUDIO_MUTE
34 AUDIO ATT OUT
74 X-RAY
35 AUDIO ATT FILTER
75 IIC_OFF
36 TEST 3
76 ON_TIMER
AT+5V
37 V RAMP F/B
77 SYNC
38 V RAMP OUT
78 POWER FAIL
39 V RAMP CAP
79 NC
40 8.7V REG OUT
80 EXT_MUTE
3
5.1
0
ON_TIMER
SWITCHING
4.8
Q105
KRA102MAT
R143
47
2
OS101
RPM7138-WH5
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
A
B
G-1
C
MICON/CHROMA/TUNER SCHEMATIC DIAGRAM
(MAIN PCB)
R618
22K
R110
R109
10K 1/4W
10K 1/4W
R124
10K
R130
10K 1/4W
NC
0
0
0
0
0
4.9
0.3
4.9
0
4.6
2.3
3.2
64
63
62
61
60
59
58
57
56
55
54
53
52
R119
4.9
22K 1/4W
2.4
MCU GND
4.9
IIC BUS
DECODER
4.9
SDA/SCL
ROM
OSD
RAM
4.9
4.9
0
I/O
NC
4.9
NC
P-ON CONT
Power Manage.
4.9
IIC
MCU RESET
TIM
2.9
CCD
INT
4.9
PWM
0
CLK CONT
MCU
AD
CPU core
CLK
0
NC
4.9
VCO
0
R129
XO
47K
4.9
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
0
0
5.0
5.0
0
4.9
0
1.2
2.0
0.8
3.4
4.9
MICON/CHROMA IC
NC
IC101
OEC7091C
C102
0.01 F
R128
560
R126
R101
2.7K
560
CAUTION
:SINCE THESE PARTS MARKED BY
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
C
D
E
R621
4.9
5
220 1/4W
H.CTL
5.6
Q607
KTC3198
3
2
C630
10V
YK
470
C629
0.01
F
5
6
7
NC
NC
3.2
3.5
8.0
0
8.0
4.6
4.9
0
3.4
3.7
0
51
50
49
48
47
46
45
44
43
42
41
8.8
4.6
4
Ver.Proc.
4.5
Hor.Proc.
PGB OUTPUT Stage
Ver SYNC SEP
V_OUT
SYNC SEPA/Hor.VCO
DRIVE
Ver.COUNT DOWN
Hor.COUNT DOWN
2.6
CUT-OFF
R606
V RAMP
V_FEEDBACK
AFC-1/H COINCIDENT
HV BLK
AFC-2 H PHASE
22K 1/4W
0
3.3
C622
50V
1
KA
4.0
AUDIO_OUT
RGB Proc.2
RGB Proc.1
OSD SW
4.6
1
RGB MATRIX
CONTRAST
NC
COLOR CONT
BRIGHTNESS
3.1
NC
8.8
Chroma Proc.
Vldeo Proc.
P.CON+5V
2.0
ACC/C-BPF
C-TRAP/YDELAY
NC
APC/KILLER
TUNER+5V
SHARPNESS
TINT/DEMO
2.3
BLACK STRETCH
NC
Y MUTE
5.7
R604
LPF
6bB AMP
100
1/4W
ATT
2.3
C614
AUDIO_IN
50V
1
KA
2.0
C612
VIDEO_IN
VCXO
2.2
50V
1
KA
NC
14
15
16
17
18
19
20
21
22
23
24
5.0
3.4
0
3.4
2.9
5.6
0
2.9
2.8
5.0
0
2.0
NC
NC
C615_1
TU_VIDEO
Serr
50V
1
C609
D602
0.01 F
MTZJ9.1B
C610
C616
TU_AUDIO
6.3V
47
KA
50V
1
KA
C634_1
0.027 B
5V REG
5.5
Q601
KTC3203_Y
R603
4.9
8.8
120 1/2W
ARE
ATTENTION
:LES PIECES REPAREES PAR UN
ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
D
E
F
G
R608
1K 1/4W
C623
50V
2.2
KA
7.9
R607
8.5
8V REG
100 1/4W
Q606
11.3
KTC3203_Y
UNREG+12V
C621
16V
47
YK
C620_1
0.01
B
D603
D604
1SS133
MTZJ8.2B
R605
220 1/2W
5V REG
Q602
4.9
KTC3203_Y
5.5
R629
7.2
C617
22 3W
10V
100
YK
7.2
5.5
C001
5V REG
4.9
NC
Q603
1
NC
0.01 F
KTC3203_Y
C002
NC
2
NC
6.3V
1000
YK
L001_1
TUNER+5V
TUNER+5V
3
3.3uH
4
NC
NC
NC
5
NC
6
NC
NC
NC
7
NC
NC
8
NC
NC
9
NC
R004
SCL
10
100
R003
11
SDA
100
AFT
12
TU_AUDIO
13
14
NC
NC
R002
R001
P.CON+B
15
15K 1/2W
15K 1/2W
16
NC
NC
17
TU_VIDEO
TU001
115-V-KA35ARB
CAUTION: DIGITAL TRANSISTOR
R.SIGNAL
G.SIGNAL
B.SIGNAL
DEFLECTION SIGNAL
TUNER VIDEO SIGNAL
F
G
H
8
FROM/TO DEFLECTION/CRT
7
CLAMP
P.CON+B
V_OUT
GND
V_FEEDBACK
ABCL
H_OUT
X-RAY
R.OUT
G.OUT
B.OUT
H_SYNC
6
FROM/TO TV POWER
POWER_FAIL
UNREG+12V
X-RAY
GND
P.CON+5V
AT+5V
5
FROM/TO SOUND/AV
AUDIO_MUTE
VIDEO_IN
AUDIO_IN
AUDIO_OUT
P.CON+5V
GND
4
3
TEST POINT
SCL
CP601
A2001WR2-6P
SDA
NC
6
AFT
NC
5
IIC_OFF
IIC_OFF
4
TU_AUDIO
SDA
SDA
3
SCL
SCL
2
2
GND
1
P.CON+B
TU_VIDEO
PCB010
CMD009
1
H
G-2