Toshiba 20AF46C Service Manual - Page 28
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A
B
ACCESSORY
8
BT001
MNAAA(R03)
TM101
BT002
RC-GQ020
MNAAA(R03)
LED SW
Q101
KTC3875S_Y_RTK
7
R101
560
R103
2.7K
6
TO SOUND
TV_MUTE
VOLUME
FROM TUNER/STEREO
AFT
5
FROM/TO COMB FILTER/AV
S_IN
Y/C_SW
4
FROM/TO DEFLECTION
H_CTL
X-RAY
FROM/TO POWER
X-RAY
3
P.FAIL
DEGAUSS_H
GND
POWER
2
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
1
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A
B
G-1
C
MICON SCHEMATIC DIAGRAM
RPM7138-WH5
OS101
5.0
B+
3
0
GND
2
4.9
Vout
1
2.7
R109
0
1K
0
R106
560
MICON IC
C142
IC101
OEC7090B
220P CH
5.0
H_CTL
AUDIO MUTE
C143
R118
4.0
220P CH
2.2K 1/4W
EXT MUTE
PROTECT
R105
0
VOLUME
12C_OFF
3.3K
R110
0
BBE SW
SYNC
10K
3.2
AFT
H SYNC
R112
5.0
KEY 1
V SYNC
2.2K
R113
5.0
KEY 2
BLUE B
2.2K
2.2
X RAY
GREEN G
R114
5.0
REMOCON
RED R
47K
0
ON_TIMER
BLANK
R119
0
22K 1/4W
S_IN
CLOCK_CNT
C140
220P
0
CH
Y/C_SW
SDA1
C141
5.0
AUDIO_SW
SCL1
220P
CH
0
NC
NC
POWER
3.5
P FAIL
MCU_CLOCK
5.0
DEGAUSS H
RESET
3.2
X-RAY TEST
CVIN
NC
0
CNVSS
VHOLD
C102
27P CH
2.3
X.IN
HLF
X101_1
100CT8R005
C104
27P CH
8MHz
FILT
X.OUT
1.7
1
0
VSS
VCC
C109
0.1
B
C
D
E
(MAIN PCB)
C145
C125
220P CH
0.001 B
1.8
R130
R150
0
CLAMP SW
47K 1/4W
KTC3875S_Y_RTK
1K
0
C120
C146
0
R126
0.001
B
33P CH
0
100
5.0
2.1
4.0
4.8
R127
0
C131
6.8K
R128
0
150P
CH
6.8K
R129
0
6.8K
0
5.0
NC
R139
5.0
R135
4.7K
100 1/4W
R140
5.0
R136
4.7K
100 1/4W
2
5.0
5.0
R134
10K
5.0
C115
820P CH
R138
2.4
C113
R132
1M
C111
2.0
0.1 B
100 1/4W
R131
C122
0.001 B
C119
2.0
1K
50V
1
KA
220P
CH
R125
C121
1.0
C117
10
0.01
B
5.0
47P
CH
R133
1K
1/4W
C128
0.1
W822
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
Q103
D104
1SS133
D105
W811
1SS133
4
3
F
5.0
5.0
0
5.0
5
6
7
8
4
3
2
1
0
0
0
0
CAUTION: DIGITAL TRANSISTOR
F
G
H
8
TEST POINT
CP101 173979-7
GND
1
I2C_SCL
2
7
I2C_SDA
3
I2C_OFF
4
GND
5
AUDIO L
6
AUDIO R
7
FROM/TO CHROMA
AT+5V
6
PROTECT
CLAMP_OFF
SYNC_OUT
HD
VD
OSD_B
OSD_G
OSD_R
OSD_BLK
5
SW_Y_OUT
RESET
POWER
SDA
SCL
FROM/TO TUNER/STEREO
J_AUDIO_OUT_R
J_AUDIO_OUT_L
4
SDA
SCL
FROM/TO SOUND
SDA
SCL
3
2
PCB010
CME017
1
H
20AF46/20AF46C
G-2