Toshiba 20AS21 Service Manual - Page 18

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Toshiba 20AS21 Service Manual
A
B
ACCESSORY
8
TM101
RC-EH010
7
OS101
PIC-28143SY-2
6
5
R114
10K
R115
4
47K
3
C130
0.01
Y
2
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
NOTE:
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A
B
C
MICON/TUNER SCHEMATIC DIAGRAM
UM-4
BT001
R03(AB)E_20_T
UM-4
BT002
R03(AB)E_20_T
R132
270
POWER LED
D109
SLR-342VCT32
MICON IC
IC101
OEC7063A
P50/H.SYNC
RED R
4.0
4
P51/V.SYNC
GREEN G
4.7
P00/EXT MUTE
BLUE B
0
R116
P01/I2C_OFF
OUT1/BLANK BL
R117
47K
4.8
R111
47K
P02/AUDIO MUTE
P20/AV2
10K
0
P03/(Surround)
P21/AV1
0
P04
P22/POWER
0
P05/(Center_SP)
P10/DEGAUSS_H
0
INT2/P.FAIL
SCL1
4.0
R131
INT1/REMOCON
SCL2
100
4.8
W822
P23/SYNC
SDA1
C140
0.8
100P SL
NC
P24
SDA2
0
NC
P25/ON_TIMER
AD1/X_RAY_TEST
0
AVCC
X-RAY
C122
R130
4.9
50V
1
KA
1K
HLF
C121
AD4/AFT
1.9
C120
200P CH
V.HOLD
AD5/KEY1
0.001 Y
0.2
C124
R134
CVIN
AD6/KEY2
0.1
F
470
2.6
2
CNVSS
RESET
0
1
Xin
OSC1
2.3
X101_1
Xout
OSC2
EFOEC8004T4
1.6
VSS
VCC
0
C118
6.3V
470
YK
CAUTION:
SINCE THESE PARTS MARKED BY
THE DC VOLTAGE AT EACH PART WAS MEASURED
CRITICAL FOR SAFETY,USE ONES
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
DESCRIBED IN PARTS LIST ONLY
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
C
D
E
(MAIN PCB)
TU001
ENV56D66G3
C003
50V
4.7
KA
3
R123
4.7K
0
R122
4.7K
0
R121
4.7K
0
R120
0
4.7K
NC
0
NC
0
4.9
NC
0
R006
4.8
270
C117
NC
R105
220P B
3.2
R007 270
4.7K
4.8
C116
NC
220P B
R106
3.2
4.7K
NC
0
R107
0
10K
W809
0
W813
R112
4.9
W815
2.2K
R113
4.8
R119
2.2K
1K
2.5
C114
W819
12P CH
2.5
C113
12P CH
2.5
W820
4.9
4.8
4.8
0
4.9
5
6
7
8
4
3
2
1
0
0
0
0
ARE
ATTENTION:
LES PIECES REPAREES PAR UN
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
D
E
F
G
W837
R002
R001
18K 1/2W
18K 1/2W
C137
50V
0.1
KA
C129
50V
0.1
KA
C125
50V
0.1
KA
R128
560
R101
R126
560
2.7K
DEFLECTION SIGNAL
TUNER VIDEO SIGNAL
ETANT
R.SIGNAL
G.SIGNAL
B.SIGNAL
F
G
H
8
7
FROM/TO CHROMA
AGC
GND
TUNER+5V
IF
6
I2C_OFF
VD
HD
OSD_R
OSD_G
OSD_B
OSD_BLK
5
FROM TV POWER
X-RAY
TO SOUND/AV
AUDIO_MUTE
POWER
FROM DEFLECTION/CRT
+B
4
X-RAY
FROM/TO CHROMA
POWER
SCL
SDA
AFT
3
RESET
AT+5V
Y_VIDEO
SYNC
2
PCB010
TMA511
1
H