Toshiba 19W331DG Schematic
19W331DG
AVVISO PER LA SICUREZZA
I componenti contrassegnati con il simbolo internazionale di pericolo devono, se cambiati,
essere sostituiti con tipi approvati e essere monatti come gli originali. Ciòassicure il
mantenimento della conformità agli standard di fabbrica durante ogni procedura di assistenza e
riparazione.
OSSERVAZIONE DELLE TENSIONI E DELLE FORME D’ONDA
1. I valori di tensione sono stati ottenuti mediante un voltmetro digitale ad alta impedenza.
2. La polarità (–) o il filo di massa degli strumenti va collegato al terminale di mass contrassegnato con ( ) nello
scherma durante il controllo di circuiti non isolati circondati dal segno e ai a punticontrassegnati con ( )
durante il controllo di circuiti isolati.
3. IU valori di tensione presentano tolleranza di ±20%.
4. Controllare che i comandi di sintonia, A.F.C. (controllo automatico di frequenza), luminosità, contrasto e colore
siano regolati in modo de, della luminosità e del colore siano regolati in posizione centrale.
5. Le forme d’onda sono state rilevate usando un normale segnale a barre colorate e sono state usando un
oscilloscopio a banda larga, via una sonda a bassa capacità.
NOTE:
1. Diagramma di circuito soggetto a modifiche senza preavviso.
SIMBOLO DI MASSA
1. : Massa non isolanta, : Massa isolata.
ESPRESSIONE
VALORE DI RESISTORE, CONDENSATORE e INDUTTORE
1. La resistenza è indicata in ohm, k=1.000, M=1.000.000.
2. Salvo alttrimenti specificato negli schemi, tutti i condensatori di valore inferiore a 1 sono espressi con µF, mentre
quelli di valore superiore a 1 sono espressi con pF.
3. Salvo altrimenti specificato negli schemi, tutti gli induttori di valore superiore a 1 sono espressi con µH, mentre
quelli con valore inferiorea 1 sono espressi con H.
3
1 NC1
2 NC2
3 NC3 6SCL
4 VSS
15
14
13
12
VGA CONNECTOR
11
10
9
8
7
6
5
4
3
2
1
PL103
D113
BAV99
SC2_V_IN
SC2_V_OUT
SC2-C
AV2_STATUS
SC2_L_IN
R100
SC2_L_OUT
SC2_R_IN
R114
SC2_R_OUT 680R
17MB24H I/O INT.
C126
100R
R112
D103
R108
100R
100R
R118
50V
4n7
C108
10k
C100
150p
50V
50V
C114
10k
C105
150p
50V
ST24LC21
+5V
BAV99
D114
12p
D115
BAV99
R115
150p
C121
D109
R110
680R
4n7
R109
IC100
75R
R128
75R
C111
LM 601SB 21A
M21A 01SL 6
B
BAV99
D116
C128
D117
BAV99
D111
27p
100n
C122
L100
L103
BLM21A601S
50V
4n7
C110
L107
L102
BLM21A601S
C116
4n7
50V
16V
100n
C124
3k3
3k3
3k3
R152
R149
R160
BAV70
D119
8VCC
7VCLK
5SDA
S102
220R
R153
D118
BAV99
D120
BAV99
220R
R161
+5V
HDMI_SW 100R
HDMI_PB
VGA_B
R290
S160
S161
1 S
2 IA0
3 GND_1
SW GROUND
4 IA1
5 YA
PC_VS
PC_HS
HDMI_Y
S158
6 IB0
7 GND_2
SW GROUND
2k2
2k2
R140
R142
GAIN1
HDMI_PR
75R
12p
+5V
75R
12p
R137
R143
C132
R150
100R
R151
100R
R148
100R
VGA_B
VGA_G
VGA_R
75R
R106
D108
R101
150p
C118
PL101
22
C123
D112
23
150p
24
25
26
27
75R
R124
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
R123
R121
BLM21A601S
L105
BLM21A601S
L104
75R
D102
75R
D110
75R
R120
C120
R122
150p
C117
100n
C243
100R
R105
R104
27p
C107
100R
R103
27p
C101
D104
AV1_STATUS
100n
D107
27p
C119
75R
D106
R113
C112
4n7
R111
C115
4n7
L101
C109
4n7
L106
C113
4n7
R119
100R
D105
C104
150p
C106
150p
10k
10k
VGA_R
SC1_V_IN100R
SC1_V_OUT
SC1-R100R
S145
R117
75R
SC1-G
SC1_L_OUT680R
SC1_R_OUT680R
SC1_R_IN
R107
SC1_L_IN
R102
VGA_G
S157
SC1-IN-FB
R116
SC1-B
8 IB1
S159
9 Y B
10 IC0
11 IC1
S156
12 GND_3 13YC
SW GROUND
D128
10n
C203
2
K
100n
C102
D100
A
1
75R
2
K
100n
C103
A
1
+8V
10k
R297
Tx-Clock
D101
IF_CVBS_OUT
IC103
PI5V512
VCTI_PROG_EN
Rx-Data
C137
L123
BLM21A601S
24VCC
16V
100n
C222
23EN
HDMI_VS
22IE0
S105
21GND_6
SW GROUND
PC_VS
20IE1
S116
19YE
HDMI_HS
18ID0
S181
17GND_5
SW GROUND
PC_HS
16ID1
S162
15YD
14GND_4
SW GROUND
RAIN1
HWSDA
10k
R243
Q115
BC848B
+5V
16V
100n
27k
R166
10k
R167
10k
R253
470R
R168
Q103
BC848B
R170
910R
820R
R169
Rx-Data
C144
Q104
Q114
BC848B
BC858B
R171
75R
R244
47p
50V
10k
C221
SW_HS
BC848B
100n
SW_VS
10k
Q116
SC1_V_OUT
+5V
R241
16V
Tx-Clock
R220
RAIN2
IC101
VGA_YPbPR_Sw
RAIN1
S142
PR
RAIN2
VCTI_PROG_EN
HWSCL
10k
R242
Q117
BC848B
10k
R252
+8V
C125
SC2_OUT
S103
L108
FERIT_SMD
+5V
+5V
100n
C127
100n
16V
16V
27k
R129
470R
R138
Q101
BC848B
10k
R130
820R
R139
1 A
2 B
3 C
4 D
PI5V330_SOIC
5 E
6 F
7 G 1 0 J
8 H
R131
33k
R135
33k
R133
33k
D121
BAV99
16V
100n
C141
D123
BAV99
16V
100n
C143
D122
1N4148
D124
BAV99
16V
100n
C146
SVHS_L_IN
SVHS_R_IN
SVHS_L_IN
LINE_OUT_L
BC858B
Q102
R141
910R
R144
75R
47p
50V
C133
PR PBY
R132
33k
4u7
50V
C129
47R
R155
75R
R162
C138
10p
25V
L112
BLM21A601S
PR1
1n
C241
PCIL
1n
C242
PCIR
1n
C142
10k
R158
10k
R165
L120
SC2_V_OUT
16V
100n
C149
16R
15O
14N
13M
12L
11K
9I
C131
47R
R157
L113
BLM21A601S
Y1
10k
R293
10k
R294
R180
R295
R296
R179
JK100
10k
10k
JK101
10k
10k
SVHS_R_IN
LINE_OUT_R
16V
100n
C145
FERIT_SMD
L109
GAIN1
S144
Y
S114
BAIN1BAIN1
S143
PB
S115
R136
33k
4u7
50V
75R
R163
C139
10p
25V
12 3
A
12 3
A
C134
C130
L110
L111
+5V
GAIN2
BAIN2
R134
33k
4u7
50V
47R
R159
75R
R164
C140
10p
25V
L114
BLM21A601S
PB1
C147
C148
1n
50V
1n
10k
R176
10k
R177
L121
1n
50V
680R
R172
R173
680R
PL105
C151
150p
50V
LINE_OUT_L
LINE_OUT_R
C152
150p
50V
1
2
SVHS_C
subw.
L122
3
4
10p
C204
GAIN2
BAIN2
10p
R214
C174
SW GROUND
10p
75R
R216
C175
SW GROUND
10p
75R
R217
C176
SW GROUND
50V
100p
C168
R206
100R
JK103
PB1 FAVINR
Y1
JK102
C181
47R
47n
NC
75R
R218
C180
47R
47n
C186
470R
1n
R226
R221
C182
47R
47n
NC
R222
C183
47R
47n
R223
C184
47R
47n
NC
R224
C185
47R
47n
JK104
PR1
A
1
75R
R197
D127
2
K
12 3
A
13
A
2
A
JK105
SVHS
L118
L117
RAIN
RAIN-
SOY
GAIN
GAIN-
BAIN
BAIN-
VGA_YPbPR_Sw
DVD_Y
DVD_C
1 23
12
75R
34
L119
DVB_IN_R
DVB_IN_G_Y
DVB_IN_B_C
DVB_IN_CVBS
DVB_L_IN
DVB_R_IN
R193
+3V3
25V
25V
R196
4k7
R194
100R
SDA_DVB
SCL_DVB
R259
100p
100p
A
1
2
K
75R
R261
C207
100R
100R
R262
75R
C208
R260
S141
R203
2
K
75R
R199
D126
A
1
C166
D125
R201
100R
S140
R191
10k
R198
10k
R207
10k
R195
10k
S139
SILENCE
MUTEPORT
+3V3
+3V3
+3V3
DVD_L_IN
DVD_R_IN
C170
50V
100p
SVHS_Y
+3V3
R178
R240
R175
10k
R185
75R
75R
10k
C165
C169
R239
R174
1n
1n
FAVINL
75R
75R
4n7
50V
10k
R258
IR
BC848B
DVD_IR_ON/OFF
CVBS_IN100R
50V
100p
A
1
2
K
50V
50V
R154
R156
Q118
4k7
4k7
C201
C200
C153
C156
4n7
L115
L116
AGC_DVB
R189
4k7
R202
4k7
C206
4n7
50V
D129
C150
4n7
RXD
TXD
IRQ
C205
75R
C157
DVD_SENSE
10k
R256
R255
10k
R257
10k
A
1
R125
2
K
+3V3
PL104
D130
TP100
1
TP101
2
3
TP112
4
TP113
5
TP114
6
TP115
7
DVB CONNECTOR
8
TP103
9
TP117
10
11
TP119
12
TP104
13
TP105
14
TP106
15
TP120
16
17
TP107
18
TP108
19
TP111
20
TP122
21
22
TP109
23
TP110
24
10
9
DVD CONNECTOR
8
7
6
5
4
3
2
1
PL108
10k
R265
PL107
1
75R
SIDE A/V CONNECTOR
R126
2
3
4
5
6
7
8
IF111
L301
1u
L322
610nH
L323
560nH
L324
470nH
L325
560nH
S358
S309
S356
IF1
1n
+8VIF
ANIF
R485
4k7
S347
Q340
BF799
S345
470R
R488
BC848B
Q303
Q307
BC848B
BC848B
Q304
Q308
BC848B
BC848B
Q305
Q309
BC848B
BC848B
Q306
Q310
BC848B
C436
HWSDA
HWSCL
150R
R479
4k7
R486
IC303
1 A 0
2 A 1
24LC32A
3 A 2
4 VSS 5SDA
KEYPAD
1
2
3
4
PL303
2k7
S341
R458
10k
S339
R459
D303
S340
MECH_SW
16V
100n
C402
D304
+8V
22u
50V
C308
C306
1 GND
2 CAPACITANCE
IC300
3 V S
FAVINL
HDMI_L_IN
100n
16V
4 L 1
C305
5 L 2
220n
16V
C307
6 L 3
220n
16V
KEY
SWITCH_SOUND_L
7 N C
R373
3k9
R326
3k9
R331
28SDA
R327
3k9
R330
27SCL
R378
3k9
+5V
+3V3
SDA470R
+3V3
SCL470R
+5V
26ADDR
HDMI_R_IN
25R1
C313
24R2
23R3
FAVINR
220n
16V
C315
SWITCH_SOUND_R
220n
16V
22NC3
TEA6422D
SWAUD_OUT_L
SC1_L_IN
DVD_L_IN DVD_R_IN
SC2_L_IN SC2_R_IN
DVB_L_IN
200R
R323
10k
SWITCH_SOUND_L
R322
10k
SWAUD_OUT_L
SWAUD_OUT_R
R302
10k
S306
S305
C430
R332
470R
R310
470R
R453
470R
R474
4k7
RIN+
GIN+
BIN+
RIN-
GIN-
BIN-
47n
LOUT2
S300
C302
9 L 4
220n
C453
16V
220n
C454
220n
C455
220n
C312
220n
C336
220n
LOUT2 ROUT2
R466
C428
1u
HP_R
+3V3
10k
C431
Q314
1u
BC848B
+3V3
100n
10k
R464
1u
Q313
BC848B
Q335
BC848B
10 L5
11 L6
C309
12 LOUT1
1u
C310
13 ROUT1
1u
14 LOUT2 15ROUT2
+3V3
100n
C457
10R
R354
10k
Q300
BC848B
22u
C301
1k
R303
100n
C322
10R
R334
R465
1k
R336
C324
10R
R342
C326
SC1_L_OUT
22u
1k
R335
ON/OFF+3V3Stb
+8V
ROUT2
SC2_L_OUT
+8V
LOUT2
C327
LINE_OUT_R
22u
SWITCH_SOUND_R
+8V
R321
10k
8 NC1
21NC2
S303
SWAUD_OUT_R
C314
220n
16V
ROUT3
LOUT3
Q301
BC848B
Q315
BC848B
R462
SC1_R_IN
C450
220n
C451
220n
C452
220n
C304
220n
C311
220n
+3V3
100n
10k
R461
C300
22u
50V
1k
R304
+3V3
100n
C332
10k
10R
R460
R347
C331
22u
1k
R345
C333
100n
10R
R348
C334
22u
1k
R346
20R4
19R5
18R6
17ROUT3
16LOUT3
C427
R300
10k
1u
HP_L
S312
R324
C432
10k
1u
+3V3
S313
10k
C429
1u
Q316
BC848B
17MB24H VCTI
C456
10R
R355
SVHS_R_INSVHS_L_IN
DVB_R_IN
SVHS_R_INSVHS_L_IN
+8V
SC2_R_OUT
+8V
LINE_OUT _L
+8V
SC1_R_OUT
VS7
10n
L318
+3V3
4
C40
22u
L300
C438
1n
50V
+3V3Stb
C323
100u
SDANVM
SCLNVM
CS
+5V
SDA
+3V3
SCL
+5V
SDANVM
1u
+3V3Stb
CS
SCLNVM
TECH2949PG40B
SDA5
NC6
39p
C320
C319
R340
100R
SDA_SW
100n
C329
AGC_TV
PL300
IDTV IF CON.
3
2
1
+3V3
+3V3
+5V
IFAGC
AGC_DVB
D305
100u
+3V3Stb
+3V3Stb
+3V3Stb
C318
39p
L302
L321
AGC_SW
AGC_TV
R339
L304
+8VIF
R450
47k
SCL_DVB
SCL
SCL4
100R
SCL_SW
C339
47u
16V
R447
BC848B
16V
100u
C330
10k
Q332
10k
R449
S360
S364
S362
TU2
AS3
50V
10n
C444
C317
S307
S310
optional PTC
4k7
IF1
R319
IF2
1k2
R306
+5V
C441
100n
16V
RXD
100R
R426
1
PL304
FOR MSTAR DEBUG
1u
50V
5k1
R338
C328
10n
R343
5k1
R344
3k3
S316
R481
150R
R482
150R
S357
C440
100u
25V
TXD
R446
10k
R451
47k
Q331
BC848B
R448
10k
+5V
100R
R430
2
3
4
1 2Y1
2 2Y0
3 3Y1
4 3 Z
S304
74HCT4053
5 3Y0
6 E
7 VEE
8 GND 9 S3
R337
+5V
R491
L326
150uH
IC301
S308
AGC1
5k1
4R7
+3V3
TU300
75R
R341
C325
X6966M
GND
+8V
SC2_V_IN
10u
OUT1 4
OUT2 5
3
SC2-C
DVD_C
DVD_Y
+8V
+1V8Stb
3k9
R351
C316
10n
D300
1N4148
GND_TUNER
AGC_SW
IN11
C435
10p
25V
IN22
SC1-IN-FB
+3V3
+5V
L303
BLM21A601S
R494
3k3
S352
IF_CVBS_OUT
+5V
SWAUD_OUT_L
SWAUD_OUT_R
PCIL
PCIR 1k
+3V3Stb
+5V
+3V3
D302
1N4148
S321
C449
100n
C363
100n
C350
100n
C351
100n
+1V8Stb
C335
220n
L306
L307
L308
L305
C462
10p
IR
+3V3Stb
10k
R350
+3V3
DVB_IN_CVBS
SC1_V_IN
16VCC
C458
SCL_SW
152Z
SDA_DVB
S314
S315
SDA_SW
S311
SDA
S342
S350
141Z
131Y1
121Y0
11S1
10S2
16V
100u
C460
3u3
C358
C461
SWITCH_SOUND_L
SWITCH_SOUND_R
C337
220n
R359
IC305
LM809
1
C343
00u
1
u
100
00u
1
C340
+3V3Stb 4k7
SC1-B
SC1-G
SC1-R
SVHS_C
SVHS_Y
CVBS_IN
R357
100R
SC2_OUT 100R
BLM21A601S
L309
+5V
25V
100n
+3V3Stb
VIN
TV/DVB_SW
237
25V
100u
C354
C
1 GND1
00n
16V
1
2 VSUP8.0AU
3 VREFAU
3u3
100n
MAIN_L
C338
MAIN_R
4 SPEAKERL
5 SPEAKERR
6 AOUT1L
7 AOUT1R
HP_L
R358
1k
R362
R363
C346
23
100u
42
3C
00n
1
15k
HP_R
1n
C366
1k
C373
1k
1n
C367
1n
C368
10n
100k
100n
C359
L310
00n
1
C 473
344
00n
1
C355
C
5
C356
C34
22p
22p
C357
WP
R356
R361
C360
100n
C348
100n
C361
100n
C448
100n
C362
100n
C349
100n
C364
100n
C352
100n
L312
C341
BLM21A601S
100u
L319
BLM21A601S
R372
00n
100u
1
C 533
3
78L05_TO92
R349
6k8
8 AIN3L/AOUT2L
9 AIN3R/AOUT2R
10 AIN2L
11 AIN2R
1n
12 AIN1L
13 SIF/AIN1R
14 TAGC
C370
15 VREFIF
100n
16 IFIN-
17 IFIN+
C371
220n
18 RESETQ
R452
19 GNDIF
20 VSUP5.0IF 69XREF
21 VSUP3.3DIG
22 GND2
L311
23 GND3
24 VSUP1.8DIG 65VSUP3.3IO
25 XTAL1
X300
26 XTAL2
27 P22
100R
28 P23
R374
29 VIN11
R365
470R
30 VIN10
R366
470R
31 VIN9
R367
470R
32 VIN8
R370
100R
33 VIN7
R369
100R
34 VIN6
R368
100R
35 VIN5
R371
100R
36 VIN4
R375
100R
37 VIN3
R376
100R
38 VIN2 51P14
R377
100R
39 VIN1
40 VOUT1
41 VOUT2
C365
42 VOUT3
100u
43 VSUP1.8FE
69
3C
44 GND4 45GND5
MECH_SW
IC304
1
2
Q333
100n
BC548B
D301
C5V6
C447
C446
10n
1u
25V
16V
S361
VST9
IF210
22k
100n
C321
R333
+33V
R307
R313
R314
R308
R312
R309
R311
IF2
4k7
R483
S344
4k7
R484
C439
1n
50V
47k
47k
47k
47k
BC848B
47k
47k
47k
47k
R315
S359
150R
R480
C437
1n
C442
10p
R493
100R
R490
47R
S333
S334
S346
R487
R301
Q302
BC848B
Q336
IFAGC
5k1
R495
NC/ADC8
ANIF
+8VIF
C443
10p
R492
100R
Q341
BF799
R489
47R
470R
R325
10k
R329
10k
10k
R305
10k
R468
10k
R469
10k
10k
R411
R320
10k
10k
R328
10k
R402
C401
8VCC
WP
7WP
R444
3k9
100R
6SCL
R431
R432
100R
3k9
R445
VCT4932
20.25MHz
PL301
1
2
3
4
5
+5VStb
C303
IC302
PL302
88GND8
87VSUP5.0BE
86TEST
85VERT+
n0
3C 75
R478
1k
R399
22k
0u
C459
10
10
C385
C434
1n
50V
84VERT-
83EW
82RSW2
81RSW1
80SENSE
3k3
1 n
R497
R496
R455
470R
R456
470R
R457
470R
3C 78
00
79GNDM
78FBIN
77RIN
76GIN
75BIN
74SVMOUT
100n
100k
R401
1k
R400
DVD_SENSE10k
C423
100n
C424
100n
C425
100n
100u
subw.
C387
DVB_IN_R
DVB_IN_G_Y
DVB_IN_B_C
16V
+5VA
BLM21A601S
10k
+3V3
L314
BC848B
Q323
R412
TV/DVB_SW
+5V
+5VA
75R
R434
390R
R441
BC858B
Q328
REDO
75R
R435
390R
R442
BC858B
Q329
GREENO
75R
R437
390R
R443
+5VA
+5VA
BC858B
R416
1R
BC858B
75R
R427
Q325
75R
R428
Q326
R417
1R
75R
R429
73ROUT
72GOUT
71BOUT
70VRD
R383
1k
68VSUP3.3BE
0n
0
1
67GND7
66GND6
C374
C381
68
u
100
C3
10n
C383
64VSUP3.3DAC
63GNDDAC
R384
22R
62SAFETY
S331
61HFLB
60HOUT
59VPROT
R388
58SDA
R389
57SCL
R391
56P21/PWMV
55P20/DFVBL
R392
4k7
54P17
22p
C380
VCTI_HS
R393
10k
R390
10k
4k7
4k7
+3V3Stb
+3V3Stb
CS
+3V3Stb4k7
POWCON.
+3V3Stb
53P16
820k
52P15
R398
270k
R387
R385
22R
50P13
4k7R394
49P12
4k7R395
48P11
R396
47P10
R318
46VSUP3.3FE
C377
S326
AV1_STATUS
C379
22p
+3V3
+3V3
+3V34k7
MST_RESET
10k
PROTECT
BLM21A601S
100n
100u
C384
+3V3Stb
+5VStb390R
4u7
100n
C382
+3V3
R397
R386
+3V3
+3V3Stb
REDO
GREENO
BLUEO
R404
100R
R405
100R
R413
HWSDA
HWSCL
R317
4k7
R316
4k7
HDMI_HP_INV
VCTI_CABLE1_DET
1k
+3V3Stb
820k
270k
R406
2k2
+3V3Stb
+3V3Stb
+3V3
IRQ
AV2_STATUS
DVD_IR_ON/OFF
4k7
R499
+3V3Stb
+3V3Stb
+5VStb
L315
376
C
u
100
L316
R403
100R
L313
+3V3Stb
1
2
S373
3
S371
S374
4
S372
5
6
S317
S335
Q317
BC848B
R467
S325
+3V3Stb
+5VStb
R353
47k
+5VStb
+3V3Stb
330R
R379
100R
R360
IR
+3V3Stb
R472
R382
S365
S366
R364
4k7
4k7
220R
R380
220R
100R
R470
BC858B
S369
Q321
BC848B
Q337
BC848B
BC858B
200R
R415
200R
R414
+3V3
S363
MUTEPORT100R
R407
100R
R408
100R
R409
VGA_YPbPR_Sw100R
R410
FOR FLASH PROG.AND VCTI DEBUG
R381
4k7
Q320
R352
220R
S368
S370
D306
1N4148
R471
4k7
R473
4k7
Q327
R419
1R
TXD
RXD
PL305
200R
R418
TV/DVB_SW
SILENCE
R420
47R
R421
47R
R422
47R
R423
100R
R424
100R
R425
100R
KEY
INT
KEY
+3V3
S367
1
2
S349
ON/OFF
BC858B
Q330
BLUEO
200R
R438
R440
200R
R433
C393
C398
47n
C394
47n
47n
C395
C397
47n
C396
47n
47n
C399
3
ON/OFF
C403
47n
47n
C400
HWSCL
HWSDA
100R
4
ROUT2
R436
100R
R439
5
LOUT3 ROUT3
POWCON.
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