+
NP
+
+
+
+
+
+
+
+
+
+
+
+
Thermal
Pad
+
Thermal
Pad
+
+
NP
+
+
+
Thermal
Pad
NP
+
+
+
+
+
+
+
+
+
Thermal
Pad
+
+
+
NP
+
+
+
+
+
+
+
+
+
MAIN9V
SUB9V1
SUB5V
SUB9V2
+12Vs
R2394
6.8k
Q2313
B1BBCF000013
Q7544
2SD0601A0L
C2383
50V
6800p
C7511
25V
470u
Q2309
2SD0601A0L
L7503
33u
R7505
22k
L7505
100u
TPB7523
C7542
16V
0.1u
R2346
47k
R2393
0
C2400
50V
0.1u
D7540
MAZ30390HL
Q2301
2SD1266AQ0LB
L2304
EXCELDR35V
C2324
50V
1000p
C2310
2.2u
50V
R2348
10k
R7535
220
1/2W
R2325
2.2
TPB7501
Q2314
B1BBCF000013
Q7541
2SB0709A0L
Q2305
2SD0601A0L
Q7542
2SB0709A0L
C2385
50V
2.2u
C7502
25V
470u
R7537
10k
C2393
25V
470u
C2330
50V
0.1u
R2331
0
L2308
220uH
L7506
33u
R2375
10k
C2344
16V
220u
C2333
25V
470u
C7570
50V
0.01u
C2396
50V
1000p
C7503
50V
0.01u
1%
R7503
806
C2395
50V
1000p
R2376
22k
R7540
4.7k
C2314
50V
2.2u
C2304
16V
1u
C2322
50V
2.2u
C2389
25V
470u
1%
R7501
820
L7501
G0C101K00023
C7513
50V
0.01u
R7541
2.2k
R7538
10k
R2387
560
TPB7521
C7532
16V
330u
1%
R7504
3.92k
D7545
MA2J11100L
1/2W
R2312
2.2
C2308
50V
22u
R7544
2.2k
C2391
50V
2.2u
C2398
50V
0.1u
1/2W
R2315
2.2
R2398
1k
D7501
MA2Q73700L
C2387
35V
220u
L7502
100u
C7544
16V
0.1u
R2392
27k
C7512
25V
470u
1/2W
R2326
2.2
C7505
25V
470u
R7543
1k
Q2306
2SD0601A0L
1%
R7546
2.2k
TPB7522
L2307
220uH
R7532
470
R2329
20k
D7538
MA2J11100L
R7534
470
R2307
1k
C1BA00000278
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
R2303
100
C7501
25V
470u
C1BA00000278
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
R2395
27k
R7533
470
R2321
100k
D7549
MA2J11100L
R2319
2.2k
R2330
20k
C2311
50V
6800p
R2308
1k
R2322
100k
C2326
25V
470u
C2315
50V
0.047u
R2302
100k
C7537
16V
0.47u
R7539
2.2k
C2306
35V
47u
R2390
1k
R2347
47k
D2304
B0JCME000025
L7504
G0C101K00023
R2301
100k
R2306
2.2k
L2303
EXCELDR35V
D7542
MA2J11100L
L2309
0
R7547
1k
R2305
2.2k
C2349
2.2u
50V
R2337
27
R7536
470
Q7504
UNR221400L
C2307
50V
22u
D7504
MA2Q73700L
C2325
25V
470u
1/2W
R2323
2.2
1%
R7508
1.87k
C2317
35V
220u
Q7543
2SB0709A0L
C1BA00000278
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
R2396
0
C2397
50V
0.1u
C2332
25V
0.1u
C2309
2.2u
50V
C2392
50V
2.2u
1/2W
R2324
2.2
C2342
50V
10u
1%
R7545
2.2k
R2332
0
C2352
16V
100u
Q2312
2SD0601A0L
C2302
16V
1u
C2328
50V
0.1u
R2397
0
R2339
3.9k
R2317
270
R2318
270
D2301
B0JCME000025
C2323
50V
1000p
C2347
50V
22u
C2345
35V 47u
C2384
50V
6800p
R2338
27
1/2W
R2311
2.2
D7544
MA2J11100L
D7505
MAZ21200A0LS
C2346
35V 47u
C2338
16V
100u
D7547
MA2J11100L
L7508
100u
C2386
50V
2.2u
C2339
50V
10u
L2310
0
1%
R7507
820
C2318
35V
220u
TPB7508
R2386
1k
R2389
560
R7588
0
Q7502
UNR221400L
R2335
0
C2312
50V
6800p
R7526
4.7k
C1BA00000278
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
C2303
16V
1u
Q2302
2SD1266AQ0LB
R2320
2.2k
C2390
25V
470u
R2399
0
C2316
50V
0.047u
D7543
MA2J11100L
D7537
MA2J11100L
D2305
B0HAPM000037
C7541
16V
0.1u
1/2W
R2316
2.2
D7539
MAZ30620HL
1%
R7559
8.2k
C2331
25V
0.1u
C7506
25V
470u
TPB7502
D7541
MA2J11100L
1/2W
R2328
2.2
R7527
4.7k
C2301
16V 1u
D2303
B0JCME000025
D7508
MAZ20680A0LS
R7506
2.2k
L2302
220uH
C2305
35V
47u
1%
R7502
1.87k
Q7501
B1DHDD000013
D7502
MAZ20680A0LS
1/2W
R2327
2.2
L2301
220uH
L7509
22u
C2355
2.2u
50V
R7548
2.2k
D7507
MA2Q73700L
C2348
50V
22u
1/2W
R2313
2.2
C7531
16V
330u
R2336
0
R2334
0
1/2W
R2314
2.2
C2394
25V
470u
R2333
0
C2321
50V
2.2u
R2391
6.8k
R7525
4.7k
R7542
470
R2340
3.9k
C7530
16V
330u
L7507
G0C101K00023
C7535
16V
0.47u
1/2W
R2310
10
C7536
16V
0.47u
R2304
100
C2334
25V
470u
TPB7503
C7543
16V
0.1u
1/2W
R2309
10
Q2311
2SD0601A0L
C2329
50V
0.1u
D2302
B0JCME000025
C2313
50V
2.2u
R7549
100k
C2327
50V
0.1u
C7509
50V
10u
C2388
35V
220u
D7546
MA3X152E0L
C2337
16V
100u
C2399
50V
0.1u
R2368
47k
C0DAAZG00006
1
V IN
2
SW out
3
GND
4
VO
S
5
ON/OFF
C0DAAZG00006
1
V IN
2
SW out
3
GND
4
VO
S
5
ON/OFF
C0DAAZG00006
1
V IN
2
SW out
3
GND
4
VO
S
5
ON/OFF
1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
1
2
3
4
1
2
3
4
1
2
3
4
5
6
HP_SUB
NR_21V
NR_21V
GND
GND
GND
GND
PF_AC_ON/OFF
STB_5V
NR_14V
GND
R
L
R
L
GND
GND
HP_R
GND
HP_L
W_L-
W_L+
W_R-
W_R+
AMP
FILTER
LIPPLE
STB SW
H/P
HP IN
STB SW
SW REG.PART
POWER GND
POWER GND
BEEP
IN
HLS
NC
PRE GND
NC
ON TIME
NC
NC
NC
FILTER
LIPPLE
HP OUT
6dB
SW GND
OUT-
OUT+
POWER GND
SW
Vcc
Vcc(SW)
OUT
SW
E
SW
B
SW
6dB
HP OUT
LIPPLE
FILTER
NC
HP IN
SW REG.PART
NC
SW GND
SW
B
SW
E
SW
OUT
Vcc(SW)
Vcc
NC
ON TIME
NC
PRE GND
NC
HLS
SW
H/P
STB SW
LIPPLE
FILTER
STB SW
AMP
IN
POWER GND
BEEP
OUT+
OUT-
POWER GND
POWER GND
TV-ON
SUB_5V
SUB_9V1
SUB_9V2
SW REG.PART
POWER GND
ON TIME
POWER GND
NC
NC
BEEP
NC
IN
FILTER
HLS
LIPPLE
HP OUT
NC
6dB
PRE GND
SW GND
NC
OUT-
OUT+
SW
H/P
STB SW
LIPPLE
FILTER
STB SW
AMP
IN
POWER GND
BEEP
OUT+
OUT-
POWER GND
POWER GND
R
6dB
L
HP OUT
LIPPLE
R
FILTER
L
NC
HP IN
SW REG.PART
NC
SW GND
SW
B
POWER GND
SW
Vcc
Vcc(SW)
OUT
SW
E
SW
B
SW
SW
AMP
E
SW
FILTER
OUT
LIPPLE
Vcc(SW)
STB SW
Vcc
H/P
NC
HP IN
ON TIME
STB SW
NC
PRE GND
NC
HLS
+15Vs
GNDs
GNDs
+15Vs
SP_R-
SP_R+
SP_L-
SP_L+
TO WOOFER
TO SQUAWKER
(W-R & W-L)
(SP-R & SP-L)
WOOFER AMP-L
WOOFER AMP-R
SQUAWKER AMP-L
SQUAWKER AMP-R
MUTE SW
NC
12
10
16
11
15
18
13
17
14
PA-BOARD TXNPA1QKSU (2/3)
!
27
M
=
#
M
M
=
#
M
M
=
#
=
#
M
<
=
#
M
M
=
#
M
=
#
<
M
=
#
=
#
=
#
=
#
=
#
M
=
#
=
#
M
M
M
<
TH-42PX20U-P PA-BOARD (2 of 3) Schematic Diagram
TH-42PX20U-P
PA-BOARD (2 of 3) 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 ...