Toshiba SD-270EKB2 Manual de serviço - Página 21
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4-6
A
Main Board Electric Diagram for SD-270: Power_Video Out_
DSPVCC33
R203
2.2K
CN5
R233
220R
1
1
Power_k
2
CLK
3
CS
4
DAT
5
GND
6
DV33
R234
33R
7
IR
8
LED_5V
9
GND
CON9
C144
C139
C140
C141
C142
0.1uF
0.1uF
100pF
100pF
100pF
2
TO POWER BOARD
CN1
Imax=1000mA
1
+P5V
LL1
FB AXIAL
1
2
3
4
+P12V
5
6
-P12V
7
7
CON8 2.5mm
C149
0.01uF
+12V: +12V(+-10%)
-12V: -12V(+-10%)
+5V: +5V(+-2.5%)
R219
0R
SERVO33
DSPVCC33
G-Y_OUT
3
+
EC38
C123
C124
C-B-U_OUT
220uF/16V
220pF
1nF
Y-R-V_OUT
G-Y_OUT
DSPVCC18
C-B-U_OUT
+ EC39
C125
C126
C127
Y-R-V_OUT
220uF/16V
220pF
1nF
0.1uF
CN8
RMAIN-OUT
R221
1K
1
AUDIO_OUT_R
2
AUDIO_IN_R
LMAIN-OUT
R222
1K
3
AUDIO_OUT_L
4
GND_AUDIO
5
GND_BLUE
6
AUDIO_IN_L
B_OUT
7
BLUE
8
SWITCH
9
GND_GREEN
10
DATA2
G_OUT
11
GREEN
12
DATA1
13
GND_RED
14
GND_COMM
R_OUT
15
RED
16
BLANK
17
GND_VIDEO
18
GND_BLANK
SCART_CVBS_OUT
19
CVBS_OUT
20
CVBS_IN
4
21
SHIELD
SCART
C131
100pF
[NM]
C133
C132
C134
C135
C136
100pF
100pF
100pF
100pF
100pF
[NM]
[NM]
[NM]
[NM]
[NM]
A
B
+12V
FS1: H=RGB L=CVBS
DSPVCC33
R198
R199
FS2 FS3
SCART CFG
1.8K
1.8K
STBY_KEY:
00
4:3
[NM]
[NM]
L: STBY or wake up.
01
TV
AUDIO/TV/16:9
H: Working.
R204
Video Status
10K
10
16:9
R200
1K
[NM]
STBY_KEY
Q23
STBY_KEY
FS2
FPC_CLK
BT3904
FPC_CLK
FPC_STB
[NM]
FPC_STB
FPC_DOUT
D5V
FPC_DOUT
DSPVCC33
IRRCV
IRRCV
LED5V
Q24
R201
FS3
BT3904
150R
[NM]
[NM]
Q25
FS1
BT3904
[NM]
C143
R202
NM
1K
SCART config circuit
[NM]
JP1
NM
[NM] 500Z 0805
Q30
FB34
LED5V
Imax=200mA
M5V
8550D
M5V
FB26
500Z 0805
FB27
500Z 0805
Imax=28mA
C147
10nF
R232
R208
22K
2K
DSPVCC33
D20
LL4148
R213
4.7K
R212
LED/PCON
Q28
LED/PCON
BT3904
4.7K
R214
22k
LED/PCON:
L: STBY.
H:
Working.
+12V
R239
[NM]
U17
R216
78L05
Q27
A5V
3
1
IN
OUT
8550D
33R
C207
R209
10nF
R211
NM
2K
R210
22K
R205
2K
-12V
-12V
RGB/YUV Switch
R191
NM(0R)
Y_OUT
IN
Dir
H
R,G,B
R192
NM(0R)
U_OUT
L
Y,U,V
R193
NM(0R)
V_OUT
U16
R220
1K
1
16
RGB/YUV_SW
IN
VCC
Y_OUT
2
15
S1A
/EN
R241
NM(0R)
G_OUT
G_OUT
3
14
S2A
S1D
G-Y_OUT
4
13
DA
S2D
U_OUT
5
12
S1B
DD
R242
NM(0R)
B_OUT
B_OUT
6
11
V_OUT
S2B
S1C
C-B-U_OUT
R_OUT
7
10
DB
S2C
Y-R-V_OUT
8
9
GND
DC
R243
NM(0R)
R_OUT
PI5V330W
[NM]
RCA_CVBS_OUT
Y_OUT
U_OUT
V_OUT
C183
C180
C181
C182
100pF
100pF
100pF
100pF
AUDIO/TV/16:9
LMAIN-OUT
R240
RMAIN-OUT
RCA_CVBS_OUT
COAX_SPDIF
NM(0R)
SCART_SWITCH
S/PDIF_OUT
S/PDIF_OUT
R194
NM
B
C
C177
10pF
CVBS_C_Y
L7
1uH
CVBS_C_Y
C178
C179
150pF
150pF
C118
C109
10pF
0.1uF
CVBS_C
L3
1uH
CVBS_C
C105
C113
150pF
150pF
C110
10pF
Y_R_V
L4
1uH
Y_R_V
C106
C114
150pF
150pF
SCART_SWITCH
C111
10pF
RGB Status
CVBS_G_Y
L5
1uH
G-Y_OUT
CVBS_G_Y
C119
C107
C115
680pF
150pF
150pF
C112
10pF
C_B_U
L6
1uH
C-B-U_OUT
C_B_U
C108
C116
150pF
150pF
ESD2V
R189
D5V
Imax=15mA
RFA5V
RFA5V
D5V
+
EC40
C117
3K
D5V
47uF/16V
0.1uF
R190
2K
C148
C146
10nF
10nF
D25
LL4148
R_OUT
D24
LL4148
D27
LL4148
G_OUT
D26
LL4148
A5V
D29
LL4148
B_OUT
D28
LL4148
D5V
CN6
1
2
3
4
5
6
VIDEO OUT
CN7
1
2
3
4
5
6
VIDEO OUT
D5V
C120
Q31
0.1uF
BT3904
Close to Q505
R195
56R
C121
R197
COAX_SPDIF
62R
0.1uF
R196
C122
39R
22pF
C
4-6
D
SCART_CVBS_OUT
C105
D1
C106
D1
C107
D1
C108
D1
R184
0R
C109
E1
EC41
C110
E1
RCA_CVBS_OUT
NM
[470uF/16V]
C111
E1
C112
E1
C113
E1
C114
E1
Y-R-V_OUT
C115
E1
C116
E1
C117
D2
C118
C1
C119
C1
C120
D3
C121
D3
C122
D3
C123
A2
C124
A2
C125
A3
C126
A3
C127
A3
C131
A3
C132
A3
C133
A3
C134
A3
C135
A3
C136
A3
C139
A1
C140
A1
C141
A1
C142
A1
C143
B1
C144
A1
C146
C2
C147
B2
C148
C2
C149
A2
C177
E1
C178
D1
C179
E1
C180
C3
C181
C3
C182
C3
C183
C3
C207
B2
CN1
A2
CN5
A1
CN6
D3
CN7
D3
CN8
A3
D20
C2
D24
E2
D25
E2
D26
E2
D27
E2
D28
E2
D29
E2
EC38
A2
D
E
EC39
A3
EC40
C2
EC41
D1
FB26
B2
FB27
B2
FB34
B2
JP1
B2
1
L3
C1
L4
C1
L5
C1
L6
C1
L7
C1
LL1
A2
Q23
B1
Q24
B1
Q25
B1
Q27
B2
Q28
B2
Q30
B2
Q31
B4
R184
D1
R189
C2
R190
C2
R191
A3
R192
A3
R193
A3
R194
B4
R195
B4
R196
B4
2
R197
B4
R198
B1
R199
B1
R200
B1
R201
B1
R202
B1
R203
A1
R204
A1
R205
B2
R208
B2
R209
B2
R210
B2
R211
B2
R212
B2
R213
A2
R214
B2
R216
B2
R219
A3
R220
B3
R221
A3
R222
A3
3
R232
B2
R233
A1
R234
A1
R239
B2
R240
B4
R241
A3
R242
A3
R243
A3
U16
B3
U17
B2
4
E