+
+
+
+
+
+
+
+
+
+
+
+
NP
NP
NP
NP
AUDIO_L
SUB_Y
GND
AUDIO_R
VAO_MUTE
BBE_R
BBE_L
S2
C2
R2
Y2
L2
NTSC_VY2
NTSC_C2
SD
A2
NTSC_R
NTSC_L
S1
GND
GND
VA
O
_
R
VA
O
_
L
SUB_PR
SUB_PB
SCL2
SDA2
L3
R3
NTSC_C1
NTSC_VY1
VTV2
SCL2
C1
R1
Y1
DTV_Y1
DTV_PB1
DTV_PR1
DTV_L1
DTV_R1
NTSC_C1
NTSC_VY1
NTSC_R
NTSC_L
DTV_PR2
DTV_R2
DTV_L2
DTV_Y2
SCL2
SD
A2
MAIN_Y
MAIN_PB
MAIN_PR
DV
I_
Y
D
V
I_PR
D
V
I_PB
DV
I_
R
DV
I_
L
NTSC_C2
NTSC_VY2
GND
GND
A
TSC_R
A
TSC_L
A
TSC_PR
A
TSC_PB
A
TSC_Y
S3
A
UDIO_R
VAO_MUTE
AFC1
AFC2
SD
A2
SUB_Y
SUB_PB
SUB_PR
SCL2
MAIN_Y
MAIN_PB
MAIN_PR
DV
I_
Y
D
V
I_PR
DV
I_
L
DV
I_
R
A
TSC_PB
A
TSC_PR
A
TSC_L
A
TSC_R
ATSC_V
A
TSC_V
BBE_R
Y_SD
Y_SD
C3
V3
L3
Y3
AUDIO_L
L1
S3
A
TSC_Y
GND
GND
GND
GND
GND
GND
FMTRAP
GND
BBE_L
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
DVI_PB
GND
GND
GND
GND
GND
GND
C_SD
GND
GND
GND
GND
GND
GND
GND
GND
GND
5V
5V
SUB5V
DTV_PB2
V1
V2
V3
C3
Y_SD
C_SD
LTV1
RTV1
ATSC_L
ATSC_R
ATSC_V
BBE_L
BBE_R
VTV1
9V
GND
GND
Y3
GND
GND
GND
GND
GND
GND
R3
9V
9V
9V
SUB9V
30V
9V
9V
C4214
25V 4R7
C4230 25V 4.7
C4242
10V
100/16V
C4239
10V
100/16V
C4241
10V
100/16V
C4221
16V
10
C4223
16V
10
C4317
16V 47/16V
C4315
16V
47/16V
C4359
10V
100/16V
C4333
6.3V
100/6.3V
C4360
16V 10
CXA2079Q
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
C4249
16V
10
C4201
16V
10
C4202
16V
10
C4244
16V
10
TC74HC4066AF(EL)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
BA15218F-E2
1
2
3
4
5
6
7
8
Q4201
2SD1819A0L
Q4204
2SD1819A0L
Q4202
2SD1819A0L
Q4203
2SD1819A0L
Q4205
2SD1819A0L
Q4206
2SD1819A0L
NJW1147AM-TE1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
AN15852A-VT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
C4240
10V
1[ZF]
C4369
0.01[ZF]
C4204
0.01
C4205
0.022
C4206
0.1
C4203
10V
1[ZF]
C4208
0.015
C4209
0.022
C4210
0.068[KB]
C4207
1000P
C4236
0.015
C4237
0.022
C4238
0.068[KB]
C4225
10V
1[ZF]
C4212 3300p
C4211
1
C4228
3300p
C4227
1
C4213
16V 0.033
C4215 0.1
C4216
1
C4217 0.1
C4219
1
C4218
1
C4229
16V
0.033
C4231
0.1
C4232
0.1
C4233
1
C4234
1
C4235
1
C4226
0.01
C4220
0.01[ZF]
C4222
10V
1[ZF]
C4224
1
C4243
1000P
C4246
0.01
C4247
0.022
C4248
16V
0.1
C4245
1
C4320
16V
1
C4321
1
C4322
1
C4318
16V
1
C4311
1
C4316
16V 1
C4312
0.01
C4309
1
C4308
1
C4307
1
C4310
1
C4306
1
C4301 1
C4305 1
C4304 1
C4303 1
C4302 1
C4358
16V
1.0
C4324
1
C4323
1
C4329 1
C4328 1
C4327 1
C4326
1
C4325
1
C4338
1
C4340
1
C4335
1
C4336
1
C4339
1
C4342
1
C4344
1
C4345
1
C4343
1000P[KB]
C4341
1000P[KB]
C4337
1
C4331
1000P[KB]
C4330
1000P[KB]
C4332
16V
0.1
C4334
16V
0.1
C4357
16V 0.1
C4356
16V 0.1
C4351
0.1
C4355
1000P[KB]
C4347
1
C4353
1
C4352
1
C4350
1
C4349
1
C4354
1000P[KB]
Q4303
2SB1218A0L
R4208
47K
R4240
3300
R4214
10K
R4238
47K
R4207
3300
R4245
4700
R4201
4700
R4233
10K
1%
R4380
68
R4381
680
R4384
470
R4382
680
R4383
680
R4209
2200
R4202
91K
R4210
91K
R4211
91K
R4204
2200
R4203
470
R4213
10K
R4212
10K
R4205
10K
R4206
1K
R4219
4700
R4230
4700
R4218 100
R4217 100
R4221
4700
R4220
18K
R4215
3300
R4231
10K
R4232
10K
R4226
18K
R4227
4700
R4228
3300
R4216
47K
R4223
1K
R4222
1K
R4224
10K
R4225
1K
R4229
47K
R4234
2200
R4235
91K
R4236
91K
R4241
91K
R4242
470
R4243
2200
R4244
680
R4247
1K
R4246
680
R4248
1K
R4239
1K
R4237
1K
R4331
82
R4332
82
R4333
220
R4334
220
R4335
220
R4336
220
R4330
82
R4325
220
R4324
220
R4326
220
R4327
220
R4323
220
R4322
220
R4319
220
R4317
220
R4318
82
R4316
82
R4315
220
R4314
220
R4313
220
R4312
220
R4311
220
R4306 220
R4305 220
R4310 220
R4309 220
R4308 220
R4307 220
R4341
1K
R4340
1K
R4357
1K
R4355
1K
R4349
1K
R4350
1K
R4346
1K
R4345
1K
R4344
1K
R4343 1K
R4342 1K
R4356
1K
R4358
1K
R4359
1K
R4360
1K
R4351
22
R4353
22
R4354
1K
R4365
0
R4368
0
R4370
0
R4371
330
R4372
330
R43611K
R4369
1K
R4367
1K
R4364
1K
R4362
1K
R4375
0
R4374
0
R4373
0
M5243AFP09-600D
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
L4201
10
L4302
10
L4301
10
C4313
1
R4320
220
C4367
1
C4364
1
C4365
1
R4389
1K
R4388
1K
R4387
1K
R4386
1K
R4385
1K
C4368
1
C4362
1
C4361
1000P[KB]
C4363
1000P[KB]
R4378
PT
R4377
PT
R4376
PT
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
C4370
16V 1
1%
R4329
75
1%
R4328
75
1%
R4400
75
C4319
1
1%
R4401
75
1%
R4402
75
C4371 1
C4372
1
C4373 1
C4374
1
C4375 PT
C4376 PT
C4377 PT
TP4226
TP4227
AUX0
AUX1
Lo
Lo
Lo
Lo
Hi
Hi
Hi
Hi
GEQ ON
Through
PROHIBIT
PROHIBIT
THROUGH_R
EQ_R
THROUGH_L
EQ_L
4
3
2
1
BBE VIV
A
IN1-2
IN1-1
NF1-2
NF1-1
IN2-2
IN2-1
NF2-1
NF2-2
IN3-1
IN3-2
NF3-1
NF3-2
PFBIN-2
PFBIN-1
NFBIN-2
NFBIN-1
OUT2
OUT1
VCC
GND
OUTa
OUTb
AGC
SR-FIL
SS-FIL
VREFF
CVB
CTH
CVA
CTL
SDA
SCL
GND
AUX0
AUX1
Vcc
INa
INb
BBE1a
BBE1b
BBE2a
BBE2b
BBEOUTa
BBEOUTb
TONEINa
TONEINb
TONE-Ha
TONE-Hb
TONE-La
TONE-Lb
-
-
+
+
VCC
GND
VAO
VIDEO-3
NTSC1
TV2
TV1
AU
D
IO
NTSC2
TV =TV2
V5IN=TV1
V4IN=AV1
V3IN=AV2
V2IN=AV3
V1IN=AV4
V1
LV
1
Y1
RV
1
C1
S2-1
S-1
v2
LV
2
Y2
RV
2
C2
S2-2
S-2
V3
LV
3
Y3
RV
3
C3
ADR
NC
NC
S-4
S2-4
C4
RV4
Y4
LV4
V4
S-3
S2-3
CIN1
BIAS
YIN1
MUTE
NC
NC
YIN2
A
GND2
CIN2
VCC
V
OUT2
Y
OUT2
R
OUT2
LOUT2
COUT2
DCOUT
A
GND
SD
A
SCL
LOUT1
VOUT1
ROUT1
TRAP1
YOUT1
VGND
COUT1
LV5
V5
RV5
LTV
RTV
TV
NC
IIC2
DTV1
NTSC_SUB
NTSC_MAIN
AN15852
SY
SY
SC
CV/SY
CV/SY
SC
V
GND2
V
GND4
V
GND7
VGND5
VGND8
VGND6
V
GND3
V
GND1
Lout3
L2
L2
L5
L6
R5
R2
Rout3
R2
R6
A
GND4
AGND6
AGND2
AGND9
A
GND1
A
GND3
AGND5
SLV_ADD
I_VCC
SDA
APD2
APD1
Pr3
Pr1
Pr2
Pr4
Prout1
Pbout1
Y
out1
Y3
Y1
Y4
Y2
Pb2
Pb4
Pb1
Pb3
L4
L3
L1
R4
R1
R3
PDD2
PDD1
APD3
PDD4
APD4
PDD3
IGND
V_VCC
SCL
Yout2
Prout2
Prout3
Yout3
Pbout2
Pbout3
DCOUT
VGND7
VGND8
VGND9
AVCC
Lout1
Rout1
BIAS
DTV2
MAIN
DVI/HDMI
MAIN_PR
A
UDIO_GND
SUB_PB
30V
AFC2
GND
GND
VIDEO-2
VIDEO-1
ATSC-YPbPr
R3
GND
A
TSC_R
A
TSC_PB
GND
JPEG_C
C3
GND
GND
SD
A2
BBE_R
GND
GND
GND
GND
A
TSC_V
A
UDIO_R
FMTRAP
L3
GND
S3
MAIN_Y
GND
SUB9V
JPEG_Y
GND
A
TSC_Y
SUB9V
GND
AFC1
Y3
SUB_Y
GND
A
UDIO_GND
GND
A
TSC_L
V
A
O_MUTE
SUB_PR
SUB5V
GND
V3
GND
SUB5V
GND
SYNC_Y
OUT
A
UDIO_L
BBE_L
GND
MAIN_PB
A
TSC_PR
SCL2
GND
GND
DV
I_
Y
GND
DV
I_
R
D
V
I_PB
DV
I_
L
GND
GND
D
V
I_PR
14
18
12
10
16
11
15
13
17
SD Y/C
EQUALIZER
SWITCH
BBE VIVA
YPbPr SELECT
INPUT SELECT
SWITCH
SWITCH
R AMP
L AMP
VAO MUTE
VAO MUTE
10
8
9
7
5
6
4
2
3
1
!
H-BOARD TNPA2817(2/2)
TH-42PX20U-P
H-BOARD (2 of 2) Schematic Diagram
TH-42PX20U-P
H-BOARD (2 of 2) Schematic Diagram
Summary of Contents for TH-42PX20U/P Operating
Page 9: ...6 2 Lead of Wiring 2 9 ...
Page 10: ...6 3 Lead of Wiring 3 10 ...
Page 11: ...6 4 Lead of Wiring 4 11 ...
Page 12: ...6 5 Lead of Wiring 5 12 ...
Page 34: ...15 2 Parts Location 2 34 ...
Page 35: ...15 3 Parts Location 3 35 ...
Page 36: ...36 ...
Page 37: ...15 4 Parts Location 4 15 5 Parts Location 5 37 ...
Page 38: ...38 ...
Page 42: ...17 2 Electrical Replacement Parts List 42 ...
Page 54: ...D12 K1KA07A00189 7P CONNECTOR 1 54 ...
Page 348: ...1 Applicable signals 4 TH 42PX20U P ...
Page 353: ...6 Location of Lead Wiring 6 1 Lead of Wiring 1 9 TH 42PX20U P ...
Page 354: ...6 2 Lead of Wiring 2 10 TH 42PX20U P ...
Page 355: ...6 3 Lead of Wiring 3 11 TH 42PX20U P ...
Page 356: ...6 4 Lead of Wiring 4 12 TH 42PX20U P ...
Page 357: ...6 5 Lead of Wiring 5 13 TH 42PX20U P ...
Page 358: ...6 6 Lead of Wiring 6 14 TH 42PX20U P ...
Page 367: ...9 4 IIC mode structure following items value is sample data 23 TH 42PX20U P ...
Page 376: ...32 TH 42PX20U P ...