Toshiba 20A22 Manual de serviço - Página 20

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Toshiba 20A22 Manual de serviço
A
B
8
RED LED
POWER ON
7
D105
R135
270
SLR-342VCT32
OS101
RPM7138-H5
6
R140
10 1/4W
TO SOUND
AUDIO_MUTE
GND
R125
2.2K
5
R138
2.2K
R112
2.2K
R113
2.2K 1/4W
FROM/TO DEFLECTION/CRT
R115
47K 1/4W
X-RAY
X-RAY_TEST
R146
10K
4
R114
10K 1/4W
3
2
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A
B
C
D
MICON/TUNER SCHEMATIC DIAGRAM
R002
R101
R126
100
560
2.7K
R128
560
R107
47K 1/4W
MICON IC
IC101
OEC7072A
5.02
0.03
AUDIO MUTE
H_CTL
0.04
0.010
EXT_MUTE
PROTECT
R109
0.04
5.00
STANDBY_H
I2C_OFF
47K
R139
100
1/4W
0.04
0.78
VOLUME
SYNC
2.2
4.17
AFT
H.SYNC
3
5.02
4.89
KEY1
V.SYNC
4
5.02
0
KEY2
BLUE B
0
0
X-RAY
GREEN G
R131
5
0
REMOCON
RED R
100
5.06
0
TRAP_OFF(ON_TIMER)
BLANK
0
5.02
X-RAY_TEST
CLOCK CONT
0
W899
S802X
4.92
NC
AV2
SDA1
0
0.66
NC
AV1
SCL1
5.02
0
DEGAUSS_H
POWER
5.01
5.02
P.FAIL
FSC IN
C113
0.069
0
RESET
OSC2
15P CH
C114
0
0
CVIN
OSC1
15P CH
1
0.15
C120
0
CNVSS
V.HOLD
0.001 B
C121
2.24
0.18
Xin
HLF
R130
2.3
0.928
C103
1K
Xout
FILT
NC
C104
470P CH
5.03
0.08
0.01
B
VSS
VCC
C118
6.3V
470
YK
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.
C
D
E
(MAIN PCB)
TU001
ENV56DB6G3
TM101
RC-EH020
C003
50V
4.7
YK
R004
390K
W810
R110
1K 1/4W
C140
0.001 CH
C137
R123
4.7K
50V
0.1
KA
C129
R122
4.7K
50V
0.1
KA
R121
4.7K
50V
R120
4.7K
R136
100
R137
100
R119
2
1K
R134
C124
470
0.1 B
220P CH
C122
50V
1
KA
R108
1K
4.8
4.8
0
4.9
5
6
7
8
4
3
2
1
0
0
0
0
CAUTION:
SINCE THESE PARTS MARKED BY
ARE
ATTENTION:
LES PIECES REPAREES PAR UN
CRITICAL FOR SAFETY,USE ONES
DANGEREUSES AN POINT DE VUE SECURITE
DESCRIBED IN PARTS LIST ONLY
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
E
F
G
ACCESSORY
BT001
R03(AB)E_20_T
BT002
R03(AB)E_20_T
R001
1K
1/2W
C125
0.1
KA
R.SIGNAL
G.SIGNAL
ETANT
B.SIGNAL
DEFLECTION SIGNAL
TUNER VIDEO SIGNAL
F
G
H
8
7
FROM/TO POWER
AT+40V
POWER_FAIL
GND
6
DEGAUSS_H
FROM/TO CHROMA
STEREO+5V
AGC
GND
IF
TUNER+5V
5
PROTECT
AFT
SYNC
HD
VD
I2C_OFF
OSD_B
OSD_G
OSD_R
4
OSD_BLK
SDA
SCL
CLOCK_CONT
POWER
FSC
RESET
3
AT+5V
Y_VIDEO
2
FROM/TO DEFLECTION/CRT
AT+5V
H_CTL
GND
PCB010
TMB540
1
H