Micon/Tuner - Toshiba VTD1431 Service Manual

A B
8
KEY_1
7
D112 MTZJ5.1B
DVD_OUT-H
EMERGENCY SW
Q102_1
0
DTC124EKA
C140
0.2
0
FOR_VCR 220P CH
6
R122
EMERGENCY
C108
100 1/4W
22P CH
C141
X101
100CT4R013
16V 10 KA 4MHz
C109
24
22P CH
C121
R101
16V 10 KA
VOL_PWM
10K
TX
5
TUNER_H
H_CONT
PROTECT
R123
10K
AV2
AV1
C149 100P CH
25
R107 1K 1/4W
V_OUT
D102 MTZJ5.1B
26
D108
4
HD
1SS133
3
44
R108
CVBS_TXT
270
C101
68P CH
C105
0.1 B
C106
0.022 B
2
CAUTION
:SINCE THESE PARTS MARKED BY ARE ATTENTION
1
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
A B
G-11
C
MICON/TUNER SCHEMATIC DIAGRAM
(AV PCB)
RED LED DRIVE
Q103
2SA1037AK
STAND BY
R132
3.1 3.1
220
2.4
LTL-1CHEE-002A
S806X
MICON W/T.TEXT IC
IC101 OECF017A
4.9
4.9
KEY_1 REMOCON
4.9 4.9
S805Y
ATS RESET
0 0
R120
POWER FAIL A MUTE
4.7K
0 4.9
SCART1 DVD RESET
R119
0 0
NC X-RAY
100K DEGAUSS
0
1.9
OSC_IN TU/RGB NC
4.8
2.3
OSC_OUT DVD_POWER
S805X
1.6
0 R139
AV3
KEY_2
0.2
R127
4.9
VOL_PWM STANDBY LED
10K
4.8
3.5
TX POWER
0
5.0
TUNER H NC
0 4.9
R133 10K
H_CONT IIC_OFF
R154 R134
0 4.9
10K 10K
PROTECT SDL
R114
0 0
4.7K
AV2 EXT_MUTE
R124
0 0.7
R144
10K
AV1 OSD_B
1K
0.2
R145
4.7
V_SYNC OSD_G
R116
1K
0.2
R146
0.6
10K
H_SYNC OSD_R
R131
1K
0
R147
4.9
100K
AVDD1 OSD_FB
1.2K
2.0
2.0
PXFM SDA
R115
0 2.5
4.7K
JTRSTO RX
0 4.9
GND VDD
C114
0 2.5
AGND JTDO NC
C115
0
C111
1.6
CVBS1 10V 1000
WSCF
0.47 B
0
C112
1.8
CVBS2 WSCR
82P CH
4.7 4.9
C118
NC JTMS AVDD3
0.1 B
4.9
4.9
AVDD2
TEST0
1.6
0.6
R113
NC MCFM
CVBSO
4.8
R111
2.1
TXCF JTCK NC
15K
:LES PIECES REPAREES PAR UN ETANT NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
DANGEREUSES AN POINT DE VUE SECURITE
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
N'UTILISER QUE CELLS DECRITES WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
DANS LA NOMENCLATURE DES PIECES
C
D E
NC NC
0 0
5 4
NC
NC
OS101
PIC-37243SR
RESET VCC GND
1 2 3
0
D101
4.9 4.9
C139
16V
4.9 4.9 0 D104 47
YK
C122
1SS133
R105 C120
6.3V 100 YK
10K 0.1 B
0
RESET SW 2.0
Q101
DTC124EKA
4.6
C134
100P CH
D110
MTZJ5.6B
R151
4.7K
D117 1SS133
R156 56K 1/4W
R158
2.2K
4.7K 1/4W
R148
C142
10K
6.3V 47 KA
R129
100
22
R155 4.7K
R140 2.7K
R141 2.7K
R142 2.7K
R143 1.5K
R128 100
23
L101
0.1 B 10uH 0305
YK
4.9 0 4.7 4.7
8 7 6 5
5.6K
1 2 3 4
0 0 0 0
L102
10uH 0305
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D E
F G
MONITOM TUNER
TU101 TUWRF4EK-778F2A
S806Y
R106 D103
10K 1SS133
R121
100 1/4W
TUNER_BT
POWER_FAIL
DVD_POWER_H
KEY_2
POWER_ON_H
A_MUTE
IF
DVD_RESET
SCL
DEGAUSS
EXT_MUTE
OSD_B
OSD_G
OSD_R
OSD_FB
SDA
RX
D105
1N4005-EIC
CAUTION: DIGITAL TRANSISTOR
F G
H
8
TEST POINT
7
CP101
A2001WV2-6P
GND 1
I2C SCL 2
I2C SDA 3
I2C OFF 4
RF AGC 5
VIDEO OUT 6
FROM/TO REGULATOR
AT+5.7V
6
P.CON+5V
DVD_RESET
RX
TX
DVD_POWER_H
GND
POWER_ON_H
TO SOUND AMP
5
POWER_ON_H
A_MUTE
VOL_PWM
FROM POWER
POWER_FAIL
DEGAUSS
TUNER_BT
EMERGENCY
GND
FROM CHROMA/SIF/VIF/21PIN
4
PROTECT
IF
VIDEO_OUT
RF_AGC
OSD_B
OSD_G
OSD_R
OSD_FB
SCL
SDA
CVBS_TXT
HD
3
V_OUT
FOR_VCR
H_CONT
DVD_OUT-H
AV1
TO IN/OUT
KEY_1
KEY_2
TO AUDIO SW
2
EXT_MUTE
AV1
AV2
TUNER_H
PCB250
TMC574
1
H
G-12