Micon - Toshiba 20AF45 Service Manual

A B
ACCESSORY
8
BT001
GR03X-SP2
TM101
BT002
RC-GQ020
GR03X-SP2
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
1
A B
G-1
C
MICON SCHEMATIC DIAGRAM
OS101
RPM7138-WH5
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
R110
3.3K
0
10K
BBE SW SYNC
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 CH 0
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
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(MAIN PCB)
C145
220P CH
C125
0.001 B
1.8
R130 R150
0 CLAMP SW
Q103
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
0.001 B C122
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 F
W822
D E
F G
D104
1SS133
D105
W811
1SS133
4
3
5.0 5.0 0 5.0
5 6 7 8
4 3 2 1
0 0 0 0
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.
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
20AF45/20AF45C
G-2