+
+
+
+
+
+
+
NP
+
+
+
+
NP
+
+
+
NP
+
+
+9V
+12V
+12V
+9V
+9V
+9V
STB5V
NR14V
NR14V
C2356
16V
100u
R2359
100
C2426
1800p
50V
C2433
0.047u
16V
C2421
0.033u
25V
C2412
50V
0.01u
C2422
560p
50V
Q2308
2SD0601A0L
C2442
0.012u
50V
C0ABBA000073
1
2
3
45
6
7
8
R2371
180k
1/2W
R2494
820
R2419
100k
C2353
16V
220u
R2430
22k
R2351
10k
R2402
5.6k
R2416
100k
R2418
47k
Q2315
2SC584500L
R2423
47k
R2362
100k
D2310
MA3X152K0L
R2412
100k
Q2353
2SC584500L
R2414
47k
R2435
22k
C2382
16V
100u
C2381
50V
10u
R2415
100k
R2417
56k
R2372
22k
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
C2402
50V
1800p
Q2354
2SA207700L
JS2106
D2311
MA3X152K0L
C2441
0.012u
50V
C2430
16V
100u
Q2356
2SC584500L
L2306
ELJPA100KF
C2432
0.027u
16V
R2445
1k
JS2107
R2383
100k
1/2W
R2363
33
R2413
56k
C2440
50V
0.01u
R2408
33k
C2357
50V
22u
C2444
0.012u
50V
R2378
100k
R2361
1M
C2437
0.047u
16V
R2373
5.6k
R2355
1.8k
JS2304
C2408
4.7u
50V
C2417
0.033u
25V
R2428
100
R2379
47k
R2367
5.6k
R2354
100
R2401
5.6k
C2403
50V
4.7u
R2421
39k
D2351
MA2J11100L
AN7709SP-E1
OUT 3
2
COMMON
IN
1
R2444
1k
R2358
10
C2401
50V
1800p
R2406
22
R2420
47k
C2424
1800p
50V
Q2303
2SD0601A0L
R2405
22
C2427
1800p
50V
Q2350
2SC584500L
C2443
16V
100u
C2358
50V
0.01u
R2442
22k
Q2307
2SA207700L
R2377
470
R2366
1k
C2354
25V
47u
Q2352
2SC584500L
C2113
16V
47u
R2364
330
C2350
50V
22u
C2407
5600p
50V
C2415
4.7u
50V
R2439
22k
R2356
100k
C2112
50V
47u
JS2303
D2352
MA2J11100L
C2431
50V
0.01u
R2357
10
C2423
0.033u
25V
R2374
100k
L2430
0
Q2351
2SA207700L
C2428
100u
16V
C2425
1800p
50V
R2380
22k
R2403
22k
R2350
68k
Q2304
2SD0601A0L
R2443
47k
C2419
0.033u
25V
R2427
100
R2404
22k
C2413
50V
47u
R2409
4.7k
R2360
47k
C2429
50V
0.01u
R2352
1k
C2445
0.012u
50V
R2440
47k
C2416
560p
50V
R2431
22k
D2312
MA3X152K0L
R2384
100k
C2404
50V
4.7u
C2351
50V
22u
C2436
0.027u
16V
R2434
22k
C2414
16V
47u
C1BB00000800
1
Lin
2
Rin
3
ADDout
4
Bout
5
Sout
6
ADDin
7
DIFin
8
SWin
9
HP
out
10
HPin
11
P
eqL11
12
P
eqL12
13
P
eqR11
14
P
eqR12
15
P
eqL21
16
P
eqL22
17
P
eqR21
18
P
eqR22
19
P
eqL31
20
P
eqL32
21
P
eqR31
22
P
eqR32
23
SW
out
24
Rout
25
Lout
26
Vcc
27
Vref
28
ADJ
29
POR
T
30
SCL
31
SD
A
32
GND
C2418
560p
50V
R2353
10k
C0ABBA000073
1
2
3
45
6
7
8
D2350
MA2J11100L
R2382
47k
AN7712SP-E1
OUT 3
2
COMMON
IN
1
Q2355
2SC584500L
C2420
560p
50V
R2422
39k
L2350
0
D2315
MA2J11100L
D2314
MA2J11100L
R2385
820
1
2
3
4
5
6
7
8
9
10
11
NC
GND
GND
5V
STB5V
+12Vs
12V
12V
GNDs
GNDs
+12Vs
DR15V
SCL1
STB5V
GND
SP_MUTE
MAIN_DEF
(AMUTE)
SUBMUTE
MAIN_DEF
R_IN
L_IN
POFF_DEF
SDA1
SCL1
SDA1
GND
POFF-DEF
MONOMUTE
RESET
SUBMONO
GND
GND
GND
GND
RESET
SOUND CTRL
R-IN
SDA1
L-IN
SCL1
MONOMUTE
IN
NC
MUTE CCT.
-
+
-+
VCC
GND
-
+
-+
GND
VCC
L
R
L
R
200Hz LPF
400Hz HPF
8
7
3
D
4
C
A
1
2
F
5
B
E
9
6
AVR 9V
AVR 12V
PA-BOARD TXNPA1QKSU (1/3)
!
5
2
=
TH-42PX20U-P
PA-BOARD (1 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 ...