Toshiba 20AS23 Service-Handbuch - Seite 20

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Toshiba 20AS23 Service-Handbuch
A
B
0
0
1
2
8
8
7
4.9
0
7
C118
C101
6.3V
100
KA
0.01 F
AT+5V
1 CNVSS
41 NC
SDA
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
9 HLT
49 HI VCC
KEY1
2.2K 1/4W
R113
10 VHOLD
50 R OUT
11 CVIN
51 G OUT
KEY2
2.2K 1/4W
R116
12 RESET IN
52 B OUT
POWER_ON
13 MCU RESET OUT
53 ACL
2.2K
R115
14 Y SW OUT
54 NC
22K
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-H5
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
0
0
3
4
6
5
4.8
4.8
R618
22K
S803X
R110
10K 1/4W
R109
10K 1/4W
R124_1
10K
R130
10K 1/4W
NC
5.0
4.8
0.7
2.3
4.8
0
0
0
0
0
0
4.8
0
64
63
62
61
60
59
58
57
56
55
54
53
52
R119
4.8
22K 1/4W
2.4
MCU GND
4.9
IIC BUS
PGB OUTPUT Stage
DECODER
DRIVE
4.9
CUT-OFF
SDA/SCL
ROM
HV BLK
OSD
RAM
4.9
4.8
I/O
0
NC
4.9
NC
P-ON CONT
Power Manage.
4.9
IIC
MCU RESET
TIM
2.8
CCD
INT
4.8
PWM
0
CLK CONT
MCU
AD
CPU core
CLK
0
NC
4.8
VCO
R129
0
XO
47K
4.9
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
1.0
0
0
4.9
4.9
0
4.9
0
1.9
0.3
2.7
4.9
MICON/CHROMA IC
IC101
OEC7091A
C102
0.01 F
R128
560
R101
R126
2.7K
560
ATTENTION
:LES PIECES REPAREES PAR UN
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
C
D
E
(MAIN PCB)
H.CTL
Q607
KTC3198
R621
6.0
5.0
220 1/4W
5.6
3
2
C630
10V
470
YK
C629
0.01
F
5
6
7
NC
NC
2.2
2.3
8.0
0
8.0
2.0
1.0
0
3.4
3.7
0
51
50
49
48
47
46
45
44
43
42
41
8.6
4.7
4
Ver.Proc.
3.6
Hor.Proc.
V_OUT
Ver SYNC SEP
SYNC SEPA/Hor.VCO
Ver.COUNT DOWN
2.6
Hor.COUNT DOWN
R606
V RAMP
V_FEEDBACK
AFC-1/H COINCIDENT
AFC-2 H PHASE
22K 1/4W
0
3.2
C622
50V
1
KA
3.5
AUDIO_OUT
RGB Proc.2
RGB Proc.1
0.7
OSD SW
1
RGB MATRIX
CONTRAST
NC
NC
COLOR CONT
BRIGHTNESS
2.8
NC
8.7
Chroma Proc.
Vldeo Proc.
P.CON+5V
1.9
ACC/C-BPF
C-TRAP/YDELAY
APC/KILLER
NC
TUNER+5V
SHARPNESS
TINT/DEMO
2.2
BLACK STRETCH
NC
Y MUTE
5.5
R604
LPF
6bB AMP
ATT
100 1/4W
2.2
C614
AUDIO_IN
50V
1
KA
1.9
VIDEO_IN
C612
VCXO
0
50V
1
KA
NC
14
15
16
17
18
19
20
21
22
23
24
4.9
2.7
0
3.3
2.8
5.5
0
2.5
2.2
4.9
0
1.9
NC
NC
C615
TU_VIDEO
C609
50V
1
KA
0.01 F
C616
C610
TU_AUDIO
50V
1
KA
6.3V
47
KA
C634
0.022
B
C635
0.0056
B
5.5
R603
4.9
8.8
120 1/2W
5V REG
Q601
KTC3203_Y
CAUTION
ETANT
:SINCE THESE PARTS MARKED BY
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D
E
F
G
R608
1K 1/4W
C623
50V
2.2
KA
8V REG
R607
Q606
KTC3203_Y
100 1/4W
UNREG+12V
C621
16V
47
YK
C620_1
0.01
B
D603 1SS133
D604
MTZJ8.2B
R605
220
1/2W
5V REG
Q602
4.9
KTC3203_Y
5.5
7.2
R629
C617
22 3W
10V
100
YK
7.2
5.5
5V REG
4.9
C001
Q603
1
NC
KTC3203_Y
C002
0.01 F
2
NC
L001_1
6.3V
1000
YK
TUNER+5V
3
3.3uH
4
NC
5
NC
6
NC
7
NC
8
NC
9
NC
R004
10
100
R003
11
100
12
13
14
NC
R002
R001
15
15K 1/2W
15K 1/2W
16
NC
TU001
ENG36A01GR
17
S803Y
R.SIGNAL
G.SIGNAL
CAUTION: DIGITAL TRANSISTOR
ARE
B.SIGNAL
DEFLECTION SIGNAL
TUNER VIDEO SIGNAL
F
G
H
8
FROM/TO DEFLECTION/CRT
CLAMP
7
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
AT+5V
POWER_FAIL
UNREG+12V
X-RAY
GND
P.CON+5V
FROM/TO SOUND/AV
AUDIO_MUTE
5
VIDEO_IN
AUDIO_IN
AUDIO_OUT
P.CON+5V
GND
4
3
TEST POINT
SCL
CP601
00_8283_0611_00_000
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
TMC558
1
H
G-2