Toshiba 20VL44 Service Manual page 66

14'', 20''LCD TV
VIDEO
L101
+5V
C125 C101
10uH
R120 R121 100U16V 100N
22R 12K
GND
C135
R101
390P
SC2_OUT_V Q100
C137
75R BC848B
GND
22U50V
R102
CVBS_TXT
75R
R112 R111 R117
680R 1K 22K
GND GND
GND
C129
SVHS_Y
470N
63V
C100
SVHS_C
10N
C130 C131
SC2_IN_V
470N 470N
CVBS_IF
63V 63V
470N
C132
SC1_IN_V
63V
FB_TXT
C111
B_TXT
C112
100N
G_TXT
C113
100N
R_TXT
C114
100N
SC_B
C115
100N C123
SC_G
C116 C139 10U
GND
100N
SC_R GND
C124 47N
100N C140 10U
R118
YCOE
47N
220R
R119
RESET
C117 C118
220R
R108
SCL5V
GND 100N 100N
100R
R109
GND
SDA5V
100R
C133
GND
3P3
63V
Y100
C134
GND
20.25MHz
3P3
J100
GND
0R
R110
+5V
10K
DAUGTHER BOARD
L1
PANEL_POWER
FERRITE BEAD
S2
EB3 EB2
1 2
EB1 EB0
3 4
EG7 EG6
5 6
EG5 EG4
7 8
EG3 EG2
9 10
EG1 EG0
11 12
ER7 ER6
13 14
ER5 ER4
15 16
ER3 ER2
17 18
ER1 ER0
19 20
PANEL_POWER PANEL_POWER
21 22
23 24
+3.3V 25 26 +3.3V
R1 +5V 27 28 +5V
CLK
29 30
47R VS
31 32
HS
33 34
C2 DE
35 36
22P EB7 EB6
37 38
EB5 EB4
39 40
GND
HEADER2X20
GND
Components designated by the safety symbol should only be replac ed by original parts produced and proofed by the manufacturer .
Sicherheitsbautelle im Sinn der sicherheitsbestimmung. Diese Teile durfen nur durch Originalteile ersetzt werden.
Contrassegno di sicurezza. I componenti devono, corrispondere a ricambi originali e devono essere montati a regola d'arte.
L100
+3.3V
10uH
C102 C103 C127
C110 C128
C104 C105 C106 C107 C108 C109
100N
100N 100N 100N 220P
100N 100N 100N
100N 100N 220P
C119 C136 C120
C121 C122
390P
1N5 220N 1N5
220N
GND GND U100 GND GND GND
L102
8
NC
61 10uH
NC
C145 C144
100U16V 100N
41 U101
C7
42 1
C6
70 43
VOUT C5
44 VCLK_INV 2
C4
72 47
VIN1 C3
71 48
CIN C2
49
C1
73 50
VIN2 C0
74 GND
VIN3 RG100 47R
31 YUV7
Y7
75 32 YUV6
VIN4 Y6
33 YUV5
Y5
79 34 YUV4
FB1IN Y4
1 37 YUV3
B1/CB1IN Y3
2 38 YUV2
G1/Y1IN Y2
3 39 YUV1
R1/CR1IN Y1
4 40 YUV0
B2/CB2IN Y0
5
G2/Y2IN RG101 47R
VPC3230D
6
R2/CR2IN J102 YUV[0..7]
27 VCLK_INV
LLC2
28
LLC1 0R TP100
78 53 C143
VREF INTLC
57 10P
VS
17 54 GND
VGAV AVO
56
MSY/HS
R113
66 55
VRT FSY/HC
18
YCOEQ R114 100R
58
FPDAT O_VS
15
100R
RESQ
R116
13 10K
SCL
14 60
SDA CLK5
24
CLK20
GND
23
FFOE
22
FFRE
63 21
XTAL2 FFRSTW
62 20
XTAL1 FFWE
19
FFIE
67
I2CSEL
16
TEST
GND
GND
AUDIO
S400
J401
1
S1
0R
J402
1 SC2_IN_V
2
0R RCA VIDEO
R447
3 75R GND
4
GND
5
GND
6
GND
7
S404
R408 1
C1 8
75R 2
3 4
220N 9
3
SVHS_C 1 2
4
10
GND
GND HS 11 SVHS_Y
R411
VS 12 CONN-DIN4
75R
13
GND
DE 14
GND
15 C414
R441
GND SC2_IN_L
CLK 16
1K
17 C424 C425 220N
RG1 GND
1N 1N
ER7 18
C415
R442
ER6 19 SC2_IN_R GND GND
ER5 20
1K
C426 C427 220N
ER4 21 1N 1N
22 C417
R444
RG2 47R GND SC1_IN_L GND GND
ER3 23
1K
ER2 24 C429 C430 220N
1N 1N
ER1 25
C419
R446
ER0 26 SC1_IN_R GND GND
27 1K
RG3 47R GND C432 C433 220N C407
EG7 28 1N 1N
EG6 29
GND 100N
EG5 30 GND
L400 C461
EG4 31
+5V
10uH
32
10U63V GND GND GND
RG4 47R GND C462
AM_MONO
EG3 33
GND
EG2 34
100U16V
EG1 35 C410
EG0 36
GND
37 100N
RG5 47R GND
R455 65
EB7 38 C466
AVSUP
56P 66
100R AVSUP
EB6 39 C467 67
ANA_IN1+
EB5 40 C468 68
GND ANA_IN-
56P 69
EB4 41 GND ANA_IN2+
56P 70
GND TESTEN
42 71
GND XTAL_IN
RG6 47R GND 72
EB3 43 XTAL_OUT
73
C4691P8
TP
EB2 44 Y400 74
AUD_CL_OUT
C470 18.432MHz 75
EB1 45 NC
76
GND NC
EB0 46 77
D_CTR_I/O_1
1P8 78
47
D_CTR_I/O_0
47R GND 79
GND ADR_SEL
48 80
GND STBYQ
49
50
FH12-50S-0.5S-top contact
R421
SCL5V
100R
C465 C448 C476
R422
100U16V 1N 10P
SDA5V
100R
L401
GND
+5V
10uH
R456
47K
TELETEXT
C126
100U16V
GND
+3.3V
BK1608HM601
L103
4
VCLK
5 C142
+3.3V
22P
C141 GND
100N
GND
+5V
R300
47R
C313 R315
GND 22U 180R
R301
47R
R308
Q300
CVBS_TXT BC858B
1K
O_HS
C316
R115
GND
100P
10K
GND
R_TXT
R_TXT
C319
220P
GND
1N4148
D400 VGA_5V
K A
VGA_5V
1N4148
D401 D402
K A BAV99L C400
+5V R400
3
47R 10N
U400
R423 R424 C406
47K 47K 100N
VGA_5V
1 8
A0 VCC R406 R401
GND
GND 75R R426
2 7 GND
A1 WP GND
D403 470R
3 6
A2 SCL BAV99L
R402
P401 GND 3
4 5
GND GND SDA
VGA_5V DB15 HD_SH 47R
R407
Shell
11 1 75R
VGA_5V
6
24LC02 84R5
R419
12 2
D406
7 GND GND
BAV99L 100R D404 R403
13 3
BAV99L
3
DDC_SDA_VGA 8
14 4 R404
VGA_5V 3
9
R420 VGA_5V 47R
15 5
R410 10N
DDC_SCL_VGA 10 R428 C405
100R 75R
R405
10K
GND GND
D405 Shell
10N
BAV99L
3 GND
R429 R430 GND
C416
10K 10K
1 VGACON
GND
R443
220N C428 C434 S405 GND
GND
1N 1N RCA JACK
R412
C418 GND VS_PC
GND GND 1 R413 75R
R431 C451
+8V HS_PC
R445 10K 22P
220N C431 C436 S406 75R
C452 R432
1N 1N RCA JACK
22P 10K
C453
GND GND
GND GND C408
3.3U50V GND GND GND
C454
GND R449
100N SC2_OUT_R
C409 SC1_OUT_L
330R
SC1_OUT_R 47U16V C435
100N 1N
R450 R451 C487
U401 GND
C488
MSP-PQFP80 330R 330R
1N 1N
C455
GND GND R452
C463 C456 C457 SC2_OUT_L
10U50V C464 47U16V 47U16V
10U50V 330R
40 47U16V C437
C438
CAPL_M
39 1N
AHVSUP GND
38
CAPL_A
1N
37 C439 GND
SC1_OUT_L
36 C458 S407
SC1_OUT_R GND R453
35 1 RCA JACK
VREF1 GND 1N
34
SC2_OUT_L 330R
33 47U16V C441
SC2_OUT_R
32 C440 1N
NC SWIN 1N
31
NC
30 GND GND
DACM_SUB
29 GND
NC R457
28 MAIN_L C459 S408
DACM_L R454
27 1
2K2
DACM_R
26 C442 C443 330R
VREF2 GND RCA JACK
25 1N 1N C444 47U16V C445
DACA_L
1N
1N
GND GND
R458
MAIN_R GND GND
+5V_AUD GND
2K2 L402
C446 C447
+5V
1N 1N 10uH
C474
C485 C486
GND GND 100N 100U16V
1N5
C412 C421
R460 R462
GND GND
4K7 5K6
100N 220N
C477
C479 C480 C413
2N2 2N2 U403 100N
100U16V
TDA1308 C449
GND GND GND 1N S401
3
GND
R436
R464
+5V_AUD GND 2
220R
10K
R438 C483
1
10K
100U16V
To Headphone
C478
C423 GND GND
R461 R463
100U16V C450
4K7 5K6
220N GND 1N
C481 C482 C475
2N2 2N2 GND
GND GND 1N5
3.3V_M
L300
+3.3V
10uH
C310 C300 C301 C302
GND 22U GND 100N GND 100N GND 100N
D2.5V_M
L301
+2.5V
10uH
C311 C303 C304
GND 22U GND 100N GND 100N
A2.5V_M
L302
+2.5V
10uH
C312 C307 C308
U301
GND 22U GND 100N GND 100N SDA5550
17 63 A19
P0.0 A19/P4.4
18 64 A18
R322 P0.1 A18/P4.1
19 66 A17
+3.3V P0.2 A17/P4.0
20
10K P0.3
21 65 A16
P0.4 A16
22 67 A15
P0.5 A15
J303 23 71 A14
R324 P0.6 A14
24 73 A13
3.3V_M 10K P0.7 A13
0R 72 A12
J309 A12
GND 44 79 A11
0R
GND GND P1.0 A11
45 83 A10
R325 P1.1 A10
46 77 A9
3.3V_M 10K R323 10K P1.2 A9
47 75 A8
J310 +3.3V P1.3 A8
48
0R
GND P1.4
49 74 A7
P1.5 A7
R316 50 76 A6
100R GND P1.6 A6
5221_IO2 62 78 A5
GND P1.7 A5
5221_IO1 80 A4
A4
R311 100R 34 82 A3
P3.0 A3
35 2 A2
GND P3.1 A2
R302 1K
36 3 A1
SCL3V P3.2 A1
37 5 A0
SDA3V P3.3 A0
38
1K P3.4
R303
SCL 39
P3.5
SDA 40 4 D7
P3.6 D7 3.3V_M
41 6 D6 A18
P3.7 D6
8 D5 /RAMRD
D5
28 10 D4 /RAMWR
P2.0 D4
C314 29 12 D3
L303 P2.1 D3
30 11 D2
P2.2 D2
4.7uH 3.3V_M 31 9 D1
C315 P2.3 D1
470N 7 D0
470P D0
63V
/RAMRD 51
P4.2
R317 /RAMWR 52 D0..7
P4.3
GND 47K 33
O_VS P4.7/VS/OE
R313
/RST
RESET
25
2K2 CVBS
32
O_HS HS/SC
R314 C309
53
RST
4K7 100N
GND GND 54
XTAL2
55
XTAL1
58 81 /PSEN
R PSEN
59 13
G XROM
C317 60
B
33P C318 Y300 61
BLANK/COR
GND
6MHz
R304
33P
100R
R305
G_TXT
G_TXT 3.3V_M
100R
C320
R306
220P B_TXT
B_TXT R320
GND
100R
R321 SCL
GND C321 U304
4K7 SDA
220P
4K7
GND 4 5
GND SDA
3 6
A2 SCL
FB_TXT
FB_TXT
2 7
A1 WP
1 8
A0 VCC 3.3V_M
24LC16
GND
R470
FB_SC 3.3V_M
10K
C490
Q404
100N
BC848B KEYBOARD MODULE
R418
GND
10K
RED+ R469
75R
C401
RED- GND
10N GND OUT 1
C489
GND 2
GND
SOG_MCSS R427 Vs 3
10N R409
10K
C402
R439 75R
GREEN+ 10K
C1
10N
GND 10uF/10V
GND
C403
P400
R2 R1
GND
GREEN- SCART 1 150R
150R
10N
CN1
C404 3.3V
7
BLUE+
6
LED_RED
5
GND IR
4
KEY_PMU
BLUE- SC1_OUT_R 3 R5 R3
KEY_DRL
R414 R416 2
R415
75R GND 180R 330R
75R 1
SC1_IN_R
75R
7 HEADER
SC1_OUT_L
GND GND GND GND
SC1_IN_L
R433
SC2_IN_V
SC2_PIN8 S2 S5
10K P+ P-
R440 R417
10K 75R
GND GND
P402
SCART 1
GND
SC2_OUT_R
SC2_IN_R
OPTION POWER
SC2_OUT_L
SC2_IN_L
U402
P2
C420
MAIN_L 1 18 P3
-INV1 GND 7
R434 220N 2 17
GND SGND GND 4 6
10K C460
3 5
3 16
SVRR GND
S409
C471 2 4
47U16V
GND 4 15
4 OUT1 GND 1 3
10uF/16V
3
1000U16V 2
5 14
2 PGND GND SPEAKER
C472
1 1
GND 6 13
OUT2 GND
1000U16V
fuse direnç 7 HEADER
7 12
+12V VP GND
R466 GND
R425
C411 8 11
C473 M/SS GND
100N
1000U16V 47K
9 10
-INV2 GND
GND GND
C422
MAIN_R TDA1517P
R435 220N R465 R467 GND
10K 27K 100R
Q403
Q402
GND BC848B
R437 BC848B R468
MUTE POWER
10K 39K
R448
C484
10K
47U16V
GNDGND GND
GND
3.3V_M 3.3V_M
C305 C306
GND 100N GND 100N
A0..18 U300
29LV040
U302
K6T1008V2E-TB A0 20 21 D0
A0 DQ0
A1 19 22 D1
A1 DQ1
A0 20 21 D0 A2 18 23 D2
A0 IO1 A2 DQ2
A1 19 22 D1 A3 17 25 D3
A1 IO2 A3 DQ3
A2 18 23 D2 A4 16 26 D4
A2 IO3 A4 DQ4
A3 17 25 D3 A5 15 27 D5
A3 IO4 A5 DQ5
A4 16 26 D4 A6 14 28 D6
A4 IO5 A6 DQ6
A5 15 27 D5 A7 13 29 D7
A5 IO6 A7 DQ7
A6 14 28 D6 A8 3
A6 IO7 A8
A7 13 29 D7 A9 2
A7 IO8 A9
A8 3 A10 31
A8 A10
A9 2 A11 1
A9 A11
A10 31 A12 12
A10 A12
A11 1 A13 4
A11 A13
A12 12 A14 5
A12 A14
A13 4 A15 11
A13 A15
A14 11 A16 10
A14 A16
A16 7 A17 6
A15 A17
A17 10 A18 9
A16 A18
A15 30 9 30
CS1 NC GND CE
/PSEN 32
J305 OE
0R
6 WE 7
CS2 WE
0R J304 J306
J307 32
OE
5 0R 0R
WE
R307
A18 1K
3.3V_M
A19 GND
GND D0..7
S300
/RST GND
16 17
D3 D2
15 18
D4 D1
14 19
D5 D0
13 20
D6 A0
12 21
D7 A1
11 22
A2 A10
10 23
A3 /PSEN
9 24
A4 A11
8 25
A5 A9
7 26
A6 A8
6 27
A15
5 28
WE A7
4 29
A12 A13
3 30
A17 A14
2 31
A18 A16
1 32
HEADER2X16
OPTION
IR1
IR1 GND OUT 1
Out
GND 2
GND GND
Out
Vs 3
Vs
GND
D3 IR
Vs
C1
IR
LED_BLUE 10uF/10V
R6
R2 R1 GND
CN1 150R 150R
100R
LED_BLUE
6
3.3V
5
4 GND R5
LED_RED Q2
3
IR BC848B
2 4K7
1
MOLCON6 R4
100R GND
R7 R6 R9
D2
470R 1K 3K9
R3
LED_GREEN Q1
D1 BC848B
4K7
LED
LED_GREEN
GND GND
R8
S1 S4 S3 S6
MENU V+ V- AV/TV
270R
HEAD PHONE MODULE
R4
470R
GND
GND
R941
X940 X941
39R R
R943
1 C941
47n/100V 330R
GND
2
R942
C940 L
3
R940 47n/100V 330R
39R
U1
1 8
S D
R10 2 7
C2
S D
3 6
POWER
10K S D
4 5
G D
FDS6675A
R9 SW1 P2
10K 4
SW-SPST 3
2
1
4 HEADER
SW1
SW SPST
GND
Subject to change without notice
D1
LED_RED
GND