Panasonic TH-42PX50UA User manual

1 Parts Change Notice 2
1.1. Mechanical Replacement Parts List 2
1.2. Electrical Replacement Parts List 2
1.3. Interchangeability for CIRCUIT BOARD P 2
2 Note 3
2.1. TH-42PX50UA 3
2.2. TH-42PX500UA 3
3 Adjustment Procedure 4
3.1. Driver Set-up 4
3.2. Initialization Pulse Adjust 5
3.3. P.C.B. (Printed Circuit Board) exchange 6
3.4. Adjustment Volume Location 6
3.5. Test Point Location 7
4 Conductor Views 9
©2005 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
TH-42PX50UA
TH-42PX500UA
4.1. P-Board 9
5 Block and Schematic Diagrams 13
5.1. Schematic Diagram Notes 13
5.2. P-Board Block Diagram 14
5.3. P-Board (1 of 6) Schematic Diagram 15
5.4. P-Board (2 of 6) Schematic Diagram 16
5.5. P-Board (3 of 6) Schematic Diagram 17
5.6. P-Board (4 of 6) Schematic Diagram 18
5.7. P-Board (5 of 6) Schematic Diagram 19
5.8. P-Board (6 of 6) Schematic Diagram 20
6 Replacement Parts List (P-board) 21
6.1. Replacement Parts List Notes 21
6.2. Replacement Parts List (P-board) 22
7 Schematic Diagram for printing with A4 27
Digital High Definition Plasma Television
Subject : Change P-board
Please file and use this manual together with the service manual for Model No
TH-42PX50U (Main), ORDER NO. ITD0503013CE
TH-42PX500U (Main), ORDER NO. MTNC050632C1
CONTENTS
Page Page
ORDER NO. ITD0510061SE
B19Canada :B07

1 Parts Change Notice
1.1. Mechanical Replacement Parts List
TH-42PX50UA
Ref. No. TH-42PX50U
(Original Parts No.) TH-42PX50UA (New Parts No.) Parts name & Description Remarks
29 TTUA1149 TTUA1328 REAR COVER Model Name Plate is
different only.
TH-42PX500UA
Ref. No. TH-42PX500U
(Original Parts No.) TH-42PX500UA (New Parts No.) Parts name & Description Remarks
39 TTUA1172 TTUA1329 REAR COVER Model Name Plate is
different only.
1.2. Electrical Replacement Parts List
Ref. No. TH-42PX50U
TH-42PX500U
(Original Parts No.)
TH-42PX50UA
TH-42PX500UA
(New Parts No.)
Parts name & Description Remarks
F603 K5D102BNA007 --- TIME LAG FUSE HIGH
F601, 602 K5D103BMA001 --- TIME LAG FUSE HIGH
F401, 402 --- K5D802BNA005 TIME LAG FUSE HIGH
RTL ETXMM563MDK TNPA3724AB CIRCUIT BOARD P CHAP.1.3.
1.3. Interchangeability for CIRCUIT BOARD P
Using the original P-board for early or late production set is recomended when boad exchanging.
Interchangeability Code
**The circled item indicates the interchangeability.
Parts Model
OA Original
New TH-42PX50U/500U TH-42PX50UA/500UA Original or new P-board may be used in early or late production set. Keep stock the original P-board and use the original for early or late production set. Stock
new parts is not required.
2
TH-42PX50UA / TH-42PX500UA

2 Note
2.1. TH-42PX50UA
1.Model number is indication in rear cover is only "TH-42PX50U " only in rear cover as shown in figure.
2.TH-42PX50U was discontinued and TH-42PX50U was introduced from NOV/2005.
2.2. TH-42PX500UA
1.Model number is indication in rear cover is only "TH-42PX500U " only in rear cover as shown in figure.
2.TH-42PX500U was discontinued and TH-42PX500U was introduced from NOV/2005.
3
TH-42PX50U / TH-42PX500U

3.1. Driver Set-up
3.1.1. Item / Preparation
1.Input a white signal of the RGB signal generator.
2.Set the picture controls: -
Picture menu: Standard
Color temperature: Middle
Picture: 25
Aspect: Full
Caution
1.First perform Vsus adjustment.
2.Confirmation of Vscn voltage should be performed after
confirmation of Vad adjustment.
When Vad=-90V, Voltage of Vscn is 30V ±3V.
3.1.2. Adjustments
Adjust driver section voltages referring the panel data on the
panel data label.
Name Test Point Voltage Volume Remarks
Vsus TPVSUS
(SS) Vsus ± 2V VR351 (P) *
Ve TPVE (SS) Ve ± 2V VR6145 (SS) *
Vset TPVSET
(SC) 240V ± 7V Fixed
Vad TPVAD (SC) -105V ± 1V VR6477
(SC)
Vscn TPVSCN
(SC) Vad+130V ± 4V Fixed
Vda TPVDA (SS) 70V ± 1V VR352 (P)
PFC C446 (+)(-) 395V ± 0.5V R443 (P)
Vlow C555 (+)(-) 73V ± 0.1V R661 (P) Vda load
current :
0.4A
Csus TPVSUS
(SS) 178V ± 0.5V R671 (P) Vsus load current :
1.7A
*See the Panel label.
3 Adjustment Procedure
4
TH-42PX50U / TH-42PX500U

3.2. Initialization Pulse Adjust
1.Input the White signal to plasma video input.
2.Set the picture controls as follows.
· Picture menu: Standard
· Color temperature : Middle
· Picture : 25
3.Connect Oscilloscope to TPSC1 (T1) and check for 15±10µ Sec.
4.Connect Oscilloscope to TPSC1 (T2) and adjust R6557 for 184+5µ /-10µ Sec.
Test point Volume Level
T1 TPSC1 (SC) --- 15 ± 10µ Sec
T2 TPSC1 (SC) R6557 (SC) 184 + 5µ / - 10µ Sec
5
TH-42PX50U / TH-42PX500U

3.3. P.C.B. (Printed Circuit Board) exchange
3.3.1. Caution
1.To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
3.3.2. Quick adjustment after P.C.B. exchange
P.C.B. Name Test Point Voltage Volume Remarks
P Board Vsus TPVSUS (SS) Vsus ± 2V VR351 (P) *
Vda TPVDA (SS) 70V ± 1V VR352 (P)
PFC C446 (+) (-) (P) 395V ± 0.5V R443 (P)
Vlow C555 (+) (-) (P) 73V ± 0.1V R661 (P) Vda load current : 0.4A
Csus TPVSUS (SS) 178V ± 0.5V R671 (P) Vsus load current : 1.7A
SC Board Vad TPVAD (SC) -105V ± 1V VR6477 (SC)
SS Board Ve TPVE (SS) Ve ± 2V VR6145 (SS) *
D, DG Board White blance, Pedestal and Sub brightness for NTSC, PAL, HD, PC and 625i signals
*See the Panel label.
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
3.4. Adjustment Volume Location
6
TH-42PX50U / TH-42PX500U

3.5. Test Point Location
7
TH-42PX50U / TH-42PX500U

8
TH-42PX50U / TH-42PX500U

4 Conductor Views
4.1. P-Board
A
1
3
5
2
4
6
C E GIBDFH
P-BOARD (FOIL SIDE)
TNPA3724AB
TH-42PX50U
TH-42PX500U
P-BOARD TNPA3724AB
TH-42PX50U
TH-42PX500U
P-BOARD TNPA3724AB
TH-42PX50U / TH-42PX500U
9

TH-42PX50U
TH-42PX500U
P-BOARD PARTS LOCATION
TH-42PX50U
TH-42PX500U
P-BOARD PARTS LOCATION
Parts Location
P-BOARD (COMPONENT SIDE)
IC406 F-1
IC503 C-4
IC504 C-5
IC509 F-5
IC512 E-6
IC
Q404 G-1
Q406 G-2
Q412 F-3
Q413 F-3
Q430 B-3
Q431 D-3
Q432 C-3
Q434 B-4
Q436 B-4
Q505 F-5
Q507 G-5
Q518 D-4
Q519 C-5
Q527 F-5
TRANSISTOR
Parts Location
P-BOARD (FOIL SIDE)
IC401 G-4
IC402 F-3
IC403 F-4
IC404 F-4
IC406 D-1
IC407 G-4
IC408 G-4
IC409 G-4
IC411 F-3
IC412 G-4
IC501 G-5
IC502 G-5
IC503 F-4
IC504 F-5
IC505 D-5
IC506 C-5
IC507 H-5
IC509 C-5
IC512 D-5
IC520 E-4
IC
Q401 F-4
Q403 F-4
Q404 B-1
Q406 C-2
Q407 C-1
Q408 C-3
Q409 C-3
Q412 C-3
Q413 C-3
Q414 G-4
Q415 G-4
Q417 F-3
Q418 F-3
Q420 D-1
Q421 F-3
Q422 D-1
Q423 H-4
Q424 G-4
Q430 G-3
Q431 E-3
Q432 G-3
Q433 G-4
Q434 G-4
Q435 H-4
Q436 G-4
Q438 G-4
Q439 E-2
Q440 E-2
Q441 G-4
Q501 H-5
Q502 H-5
Q503 H-5
Q505 D-5
Q506 B-5
Q507 B-5
Q508 E-5
Q509 E-5
Q510 E-5
Q511 F-4
Q512 F-5
Q516 E-5
Q517 D-4
Q518 F-4
Q519 F-5
Q520 D-4
Q525 C-5
TRANSISTOR Q527 D-5
Q530 C-5
Q535 H-5
Q536 F-5
Q537 G-6
Q538 G-6
Q541 E-5
Q544 H-5
Q550 G-5
Q551 G-5
Q552 G-5
Q553 E-5
Q554 E-5
Q557 G-5
Q558 F-5
Q559 G-5
Q560 F-5
Q561 G-5
Q562 F-5
Q564 F-5
Q565 G-4
Q567 F-5
PP
TH-42PX50U TH-42PX500U
TH-42PX50U / TH-42PX500U
10

A
1
3
5
2
4
6
C E GIBDFH
P-BOARD (COMPONENT SIDE)
TNPA3724AB
TH-42PX50U
TH-42PX500U
P-BOARD TNPA3724AB
TH-42PX50U
TH-42PX500U
P-BOARD TNPA3724AB
TH-42PX50U / TH-42PX500U
11

TH-42PX50U / TH-42PX500U
12

5 Block and Schematic Diagrams
5.1. Schematic Diagram Notes
TH-42PX50U / TH-42PX500U
13

5.2. P-Board Block Diagram
- +
- +
+ +
D510
D509
X501
4NHz
Q527
D534 D536
R661 1
2
3
D545
D544D542
D521
VR352 1
2
3
D535
PR509
D532
D531
D530
D568
Q409
Q408
Q413
Q412
D417
D420
D419
C467
D404
D462
D511
PR501
D444
D401
D505
D555
D563
R544
D567 PR503
R671
VR351
C555C446
R443 1
2
3
L506
D529D528
1
2
IC408
4
2
1
3
1
3
4
2
1
3
4
2
IC404
IC403
398
14
42
16
10
T401
5876
VCC
MOS
DRIVE CURR
DET
CURR
COMP
2134
Q407
Q420
Q404
Q406
R406
D415
IC406
POWER
FACTOR
CORRECTOR
5
4
9
2
10 6
T402
Q535
8
6
10
7
9
2
3
4
1
15
19
24
18
22
23
16
17
21
20
VDD
VSS
XIN
XOUT
RESET
STB PS
PFC DET
F STB PC
ON/OFF
DISCHARGE
ECO ON/OFF
F STB ON/OFF
V LOW DET
AC P DET
TV ON/OFF
VSUS DET
STB ON/OFF
PS SOS
PFC ON/OFF
V LOW ON/OFF
IC501
1
3
IC502
RESET
1
5
2
46
3
T407
9
8
11
3
15
2
6
4
1
IC512
1
4
Vda
P12
+15V
+12V
TO
1
2
6
PB5
P5
+12V
+12Vs
4+15V
+12Vs
7
+12Vs
8
1
+15V
2
+15V
P23
TO
SC23
9+5V
TO
STB5V
7
P25
D25
+5V
10
Q421
POWER MCU
COLD
COLD
HOT
10 STB_PS
4
15
3
IC402
Q422
78STB12V
DC15V(V15)
DC12V(V12)
Q509
PB30
+15V
FAN SOS
5
4
3
P30
+5V
TO
FAN CONT
1
14 FAN SOS
Q550
Q557
2
3
1
16
17
15
18
12V
2
12V
3
1
FAN CONT
Q552
3
HOT
PPOWER SUPPLY
4
Vda
Q508
13
14
PR601
96
543
5
ZCD
7
GD
8
VCC
13
VFF
4
CSINV
Q507
Q506
IC509
13
14
12
MAIN RELAY
RUSH RELAY
VSUS
ON/OFF
ALL OFF
11
Q561
Q559
13 F STBY ON
IC507
15
REG
Q544
ALL OFF
PS SOS
PANEL MAIN ON
ECO_ON
Q567
Q518 Q519
F STB 14V
2
1
3
F STB 14V
F STB 14V
P10
TO
PA10
1216 15 13
246
IC520
5
PR401
PR402
Q401
4785
321
Q435
Q423 R903-R906
R928-R931
Q424,Q434.Q436
L405L404
F401
F402
1
4
NEUTRAL
RL402
RL403
R455,R474
R479,R481
R483,R488
Q430,Q432
Q433,Q441
Q417
IC407
Q438
Q431
Q439
Q440
4
2
4
2
IC409
3
1
1
3
3
14
13
10
18
9
6
15
16
SS12
TO
T601
REG
IC504
21
T410
T404
D539
LIVE
P9
2
ERROR DET
POWER
DC POWER
ERROR DET
COMPARATOR(PFC DET)
+5V REG
COLD
HOT
AC CORD
TO
PFC DET
STB5V DET ALLOFF SW
EXTIsenVIN
CE/SS CLK FB VSS
VlOW DET
VlOW DET
MAIN ON/OFF
RUSH ON/OFF
INV.
Vlow
Vlow POWER CIRCUIT
Vsus POWER CURCIUT
INV.
INV.
OSC
OSC
F STB 14V
D418 R464
R472
R473
R465
R496 R495 R494
Q418
R497
(350V 40V)
PFC OUT
IC411
14
COMPARATOR(AC IN)
5
3
Q4O3
L403
Q503
Q501
Q502
Q551
Q505
R622
R648
R636
R626
R656
ERROR DET(Vsus)
IC506
1
3
REG
ERROR DET
IC503
12 REG
SW
Q553
Q554
SW
SW
Q560
Q564 Q558
Q562
INV
SW
Q565
ON:L
STB
OVER
VOLTAGE
PROTECTION
(8V 2V)
Q414
Q415
CONTROL
AC IN
(66.5V 3V)
DETECTION
Q511 Q512
H:ON
Q538
STB 5V ON
Q537
SW
2Vda
73V
D569
D570
D571
R670
Q510,Q516
Q541
R650
R649
5V OUT
DETECTION
COUPLER
PHOTO
IC412
COUPLER
PHOTO
CONTROL
D579
R579
D549
R666
D551
R545
(16V 2V)
3
41
2
IC505
IC401
COUPLER
PHOTO
COUPLER
DC-DC
CONVERTER
Csus
Q530
Q525
R533
(3V 1.0V)
178V
(1.7A)
R627
Vsus
R526
R527
H:ON
Vdat OVER VOLTAGE
DETECTION(100V 25V)
VSUS OUT
DETECTION
(60V 40V)
OVER
VOLTAGE
PROTECTION
(490V 80V)
COUPLER
PHOTO
COUPLER
PHOTO
PHOTO
OVER
VOLTAGE
DETECTION
(490V 80V)
(Vda)
DETECTION
12V OVER
VOLTAGE
(16V 2V)
PROTECTION
INV.
COUPLER
PHOTO
SC2
TO
Vsus
1
2
TO
2Vsus
P11
P2
Vsus
Vsus
SS11
3
SW
Q536
PFC
D427
D428
R444
R475
R441
R442
D435 D467
D441
1
R921
D552
Q517Q520
R620
R589
R590
R621
R534
D574
D588
D572
OSC
OSC
Vda 70V
Vsus 188V(0.6A)
395V 395V
TH-42PX50U, TH-42PX500U
P-Board Block Diagram TH-42PX50U, TH-42PX500U
P-Board Block Diagram
TH-42PX50U / TH-42PX500U
14

5.3. P-Board (1 of 6) Schematic Diagram
C426
470P
C429
0.015
R444
12K
R430
430K
D503
MA165
R424
22K
D504
MA165
R440
470K
C436
1.0
R451
33K
R433
12K
C443
1000p
R449
0.82
C432
1.0
R458
4700
IC406
C0DAZZZ00021
1234
5678
R436
15K
R443
2K
ZN401
D4EAD6210001
D418
B0BA7R900004
C444
1000p
C409
2.2uF
R441
680K
R473
560K
D415
B0JAME000081
R452
10K
R439
12
R417
430K
R448
0.82
R456
33K
R437
18K
C428
220P
R454
10K
R464
33K
R438
330
R442
680K
C430
0.015
R472
560K
ZN402
D4EAD6210001
R465
560K
R475
680K
R462
430K
C459
0.015
C460
330p
C461
330p
C463
22P
R414
15K
D433
MA4150-M
C445
1.0
Q401
B1CHND000004
R421
33K
R471
3300
R426
10K
C440
10
C431
1000P
L403
EXCELSA35T
D431
B0JCDD000002
R415
10K
TP1 TP2
TP3 TP4
TP5 TP6
TP7
TP8
R428
10K
ZH2
ZH1
ZH3 ZH4
ZH18
ZH20
ZH17
ZH19
ZH21
ZH22
ZH32
ZH30 ZH31 ZH34 ZH35
ZH33
ZH92
ZH95
ZH96
ZH97
ZH8
ZH7
ZH37 ZH36
ZH38
ZH48
ZH49
R431
10K
C423
4700P
C427
1.0
Q420
2SD1819A
R463
33K
R467
1000
Q407
XN4601
C468
0.01
D429
ERA15-10
R419
100K
P9
K1KA03A00537
4
LIVE
NC 3
-2
NEUTRAL 1
ZH11
ZH12
L404
G0B123K00004
1
2
4
3
L405
G0B123K00004
1
2
4
3
C473
680P
C476
680P
Q422
2SD1819A
R490
47K
R491
47K
Q404
B1BCCF000022
R493
12
R410
10
ZH43
ZH42
ZH40
ZH51
D419
RU30ALF014
D420
RU30ALF014
ZH102
ZH103
ZH104
ZH105
ZH106
ZH107
ZH108
ZH109
ZH110
ZH111
ZH5
ZH6
Q406
B1DELQ000003
C446
390uF/450V
ZN403
ERZVA7D511T2
ZH15
ZH16
ZH9 ZH10
F401
T8AH 250V
F402
T8AH 250V 1mm
1mm
1mm
1mm
Z450
EYF52BCY Z451
EYF52BCY
Z452
EYF52BCY
Z453
EYF52BCY
C404
1.0uF
ZN404
ERZVGAD681T2
Z2
K4ZZ01000206
1
D401
B0FBCT000004
4
2
3
1
RL402
TSEH8011
1
42
3
T401
G4D4A0000117
123456789
10
11 12 13 14 15 16 17 18 19 20
D417
RU30ALF014
ZH54 ZH55
ZH50 ZH61
S401
J0LT00000009
S402
J0LT00000009
R492
22
PR401
K5Y502BA001 ZH75ZH73
D428
ERA15-10 D427 ERA15-10
PR402
K5202B00015
C462
1.0
C470
1.0uF
RL403
TSE10801
2
34
5
61
R406
2.2
CURR
Vcc GND
CURR
DRIVE
COMP
MOS
DET
PFC
CAUTION
CAUTION
P-BOARD TNPA3724AB (1/6)
POWER
FACTOR
CORRECTOR
AC CORD
TO
COLD
HOT
COLD
HOT
COLD
HOT
COLD
HOT
HOT COLD
P-BOARD
(3/6)
TO
71
B
F
5 9
C
24
D
E
6
A
3 8
ABC DEFGHI J K L
1
2
TH-42PX50U, TH-42PX500U
P-Board (1 of 6) Schematic Diagram TH-42PX50U, TH-42PX500U
P-Board (1 of 6) Schematic Diagram
TH-42PX50U / TH-42PX500U
15

5.4. P-Board (2 of 6) Schematic Diagram
R681
150
R545
10K
D535
MA188
C605
180u/160V
D425
MA188
C624
0.01
R598
47K
R592
3000
D521
B0HAMP000067
D545
MTZJT-7722B
R632
220
IC520
C9ZB00000496
12345678
111213141516 910
C604
180u/160V
R641
47K
R537
36K
R613
16K
J501
LSJW0001
R609
8200
C547
0.033
R922
100
C530
0.033
R679
0.39
ZH83
T402
G4D1A0000098
9
10
2
6
3
5
4
D574
MA111
Q516
B1DHBD000004
R660
12K
ZH82
R596
10K
C548
0.1
D542
MTZJT-7722B
ZH86
Q541
B1CBGD000001
C620
0.01
Z1
K4ZZ01000206
1
ZH80
T407
ETQ11K5AZ
65
2
4
1
ZH79
R579
10K
ZH60
ZH58
R547
1000
C574
0.1
C646
330P
C527
4.7
T404
G4D4A0000109
9
11
13
14
1
3
2
4
15
7
8
6
5
C523
1.0
R597
47K
ZH56
D570
MA4300-M
R614
3300
C551
0.1
R607
8200
R698
0.39 C555
220u/100V
D568
MA142WA
R576
12K
C457
0.033u
D531
B0HAPR000012
R667
0
D539
B0HBRP000007
C577
33u/100V
R664
9100
Q409
B1CHND000004
R588
390
R612
2200
C601
0.01
R649
22K
R624
0.22
VR352
2000
Q413
B1DEGQ000070
R567
4.7k
R572
390
R675
2.2
C552
0.1
R528
4.7
R631
33K
R482
22
R551
100K
PR509
K5H501Z00005
IC512
C0DAEMB00004
132
R669
130K
D534
B0JBSG000026
L510
EXCELDR25C
ZH94
R584
10K
Q508
XN450100L
R562
18K R560
13K
R561
4300
R682
2200
ZH66
ZH84
ZH85
ZH72
ZH78
L509
J0JBC0000032
R582
10K
R477
180
ZH59
C534
470P
C553
0.1
ZH53
Q520
B1HFCFA00021
6
1
5
3
4
2
D551
MA4130-M
ZH57
D549
B0BA7R200003
R563
2.2
P5
K1KA11AA0194
11 GNDs
10 GNDs
9GNDs
+12Vs
8
+12Vs
7
+12Vs
6
GND
5
+15V
4
GND
3
+12V
2
+12V
1
D544
MTZJT-7722B
R713
4700
ZH63
C643
47
R600
390
R585
33K
Q510
B1DHBD000004
R599
390
C625
10
D538
MA3051-MTX
R476
180
ZH62
R661
5K
C606
1.0
R670
1000
R655
0.39
C546
0.033
R680
0.39
R574
330
R659
30K
D569
MA4300-M
R645
47K
R662
130K
Q517
B1HFCFA00021
6
1
5
3
4
2
D529
MA3X15300L
C557
25V/1500
Q509
XN0440100L
6
1
5
3
4
2
R683
150
J502
LSJW0001
R674
33K
C451
100P
D579
MA111
C647
330P
Q408
B1CHND000004
D532
B0HAPR000012
C554
1.0
D543
MAZ41500MF
D536
B0JBSL000013
R573
390
Q527
B1DEHL000018
R531
4.7K
C550
1000P
R663
2.2
R591
1M
ZH99
C581
0.022
Q412
B1DEGQ000070
R668
0
P23
K1KA03AA0193
3GND
2+15V
1+15V
ZH91
R650
10K
D528
MA3X15300L
D571
MA4300-M
R666
1000
ZH74
ZH81
D572
MA188
C528
1.0
ZH65
D423
MA188
C584
0.022
C556
1500u/16V
R676
33K
R478
22
D530
MA4100-MTA
ZH52
R593
5600
C587
0.01
P12
K1KA10AA0194
10 STB_PS
9NC
8STB_12V
7GND
6GND
5GND
4+15V
3NC
2Vdat
1Vdat
R712
0
D588
B0HAMP000067
Vlow
Vda
11 1813 14 1715 1610 12
P-BOARD TNPA3724AB (2/6)
TO
SS-BOARD
(SS12)
COLD
HOT
COLD
HOT
HOT
COLD
POWER CONTROL
ERROR DET(Vda)
P-BOARD
TO
(4/6)
(SC23)
TO
SC-BOARD
TO
(PB5)
PB-BOARD
AEADACABAA AF AG AH AI AJ AK AL AM AN
2
1
TH-42PX50U, TH-42PX500U
P-Board (2 of 6) Schematic Diagram TH-42PX50U, TH-42PX500U
P-Board (2 of 6) Schematic Diagram
TH-42PX50U / TH-42PX500U
16

5.5. P-Board (3 of 6) Schematic Diagram
R926
220K
R403
47K
D404
B0EBKT000007
4
2
3
1
R445
100K
R905
120K
ZH88
D438
MA4150-M
R550
1M
R910
10M
Q433
B1CBGD000001
C494
100P
Q565
2SD1819A
R470
0.39
ZH69
R407
10K R604
1200
D440
MA4300-M
R555
1M
R930
120K
R911
10M
C407
22u/450V
R552
1000
C512
470P
R435
10K
D444
B0HAMM000122
R928
120K
D467
ERA15-10
R544
330
R901
27K
Q511
B1CFND000005
R704
100
R524
1800
R447
33K
R925
3300K
R466
1000
C514
470P
IC407
C0DBAZZ00125
1234
5678
Q560
B1CHHG000002
R507
220
R927
220K
R906
120K
R485
1K
D414
MA111
R903
120K
Q518
B1DEHL000018
C498
1.0
R481
10M
R913
1000
C417
0.01
C433
1.0
D466
ERA15-10
R401
4700
D510
B0HANM000028
R594
10K
L501
EXCELSA35T
L506
EXCELDR25C
D441
B0HAMM000122
R914
1000
R483
10M
Q423
B1CBGD000001
C513
470P
D443
MA4240-M
C414
0.01
Q414
B1ABCF000134
Q439
B1CHND000004
C415
1000P
D407
MA188
R402
680K
ZH41
C495
100P
R461
1K
D442
B0BA7R200003
R409
0
D464
ERA15-10
D445
MA165
D410
MA111
R411
10
D462
MA142WKTX
ZH14
C467
330P
R489
1000
R929
120K
Q434
B1CEJQ000002
R427
330K
D437
MA4082M
C491
0.1
D436
MA188
Q438
B1CBGD000001
R468
4700
R706
10K
R570
1000
R932
1M
D465
ERA15-10
R446
0.39
C425
0.01
Q424
B1CBGD000001
ZH89
D439
MTZJ15A
D463
ERA15-10
R412
4700
C496
1.0
C520
0.1
C424
1000P
R907
27K
D509
B0HANM000028
R565
330K
C516
0.47
R554
3300
IC412
CNC1S171R
2
1
4
3
R530
33K
R522
10
IC409
CNC1S171R
2
1
4
3
IC408
CNC1S171R
2
1
4
3
R904
120K
R469
10K
R474
100K
D412
MA111
D406
MA4200-M
D411
B0BB17000010
C529
1.0
R909
10M
D511
B0HBSM000043
Q415
2SB1218ARL
R915
10K
R912
10K
Q440
2SD1819A
D563
MTZJT-776.2B
Q436
B1CEJQ000002
D507
MA4150-M
C434
1.0
R703
100
R908
3300K
R548
1000
Q432
B1CEJQ000002
R587
47K
R931
120K
ZH68
R423
150K
R521
10
T410
G4D20000229
9
8
6
3
1
210
11
12
13
14
18
16
15
C416
1000P
R413
10
R457
33K
D461
B0BA7R900004
Q441
2SD1819A
C493
100/25V
R488
10M
Q435
B1CBGD000001
ZH13
R702
100
C515
1200
R479
100K
R429
10K
R405
680K
D566
B0HAMM000122
R432
10K
C490
330P
R455
10M
D435
ERA15-10
D564
MAZ72000AF
C419
1000P
C517
APS-250ETD101MJC5S
C497
220/25V
ZH87
Q430
B1CEJQ000002
Q431
B1DEGS000001
R921
30.9K
R916
0
C413
0.01
D413
MA111
IC504
C0DAEMB00004
132
R422
180
D459
MA188
D552
B0BA7R900004
PR501
K5H5022A0023
R498
390
C406
1000P
C401
1000P
P-BOARD TNPA3724AB (3/6)
HOT
COLD
HOT
COLD
COLD
HOT
COLD
HOT
ERROR DET
CONTROL
DC POWER
COUPLER
PHOTO
PHOTO
COUPLER
PHOTO
COUPLER
P-BOARD
(1/6)
TO
(5/6)
P-BOARD
TO
9
E
5
C
4361
A
D
8
B
2
F
7
BA BB BC BD BE BF BG BH BI BJ BK BL
HKFJCEDA LGBI
11
12
13
14
15
16
17
18
19
20
21
22
23
TH-42PX50U, TH-42PX500U
P-Board (3 of 6) Schematic Diagram TH-42PX50U, TH-42PX500U
P-Board (3 of 6) Schematic Diagram
TH-42PX50U / TH-42PX500U
17

5.6. P-Board (4 of 6) Schematic Diagram
D501
B0HANR000016
R533
22K
R526
220K
IC505
CNC1S171R
2
1
4
3
C629
0.01
Q530
B1CBGD000001
Q507
B1DAGQ000013
R671
10K
R656
47K
R691
100K
D584
B0BA7R200003
R608
3300
R603
3300
D582
MA7056
R646
22K
ZH29
D586
B0HAMP000067
ZH27
IC506
C0ZBZ0000878
1
2
5
3
4
R643
0.68
C603
47
R647
22K
Q525
B1CBGD000001
C592
0.015
R534
220K
D514
MA4062M
C611
1400u
220V
L502
1mH
T601
G4D1A0000116
5
9
3
4
6
R654
100
R696
10
ZH46
VR351
3K
C633
0.01
C641
1000P
C591
0.015
ZH23
R658
1M
R622
150K
ZH25
R601
47K
R626
150K
R595
2200
C615
1400u
220V
R637
0.68
R590
12K
P2
K1KA06AA0192
VSUS
1
VSUS
2
NC
3
GND
4
GND
5
GND
6
ZH24 R636
150K
D506
MA4051N-MKT
R644
0.68
R648
150K
ZH26
D587
MA188
R642
0.68
P11
K1KA07AA0192
GND
7
GND
6
GND
5
NC
4
Vsus
3
Vsus
2
NC
1
PR601
T 3.15A 250V
R589
12K
Q505
B1CEJQ000002
IC509
C0DABZZ00010
1
INV
2
COMP
3
VFF
4
CS
5
ZCD
6
GND
7
GD
8
Vcc
D575
MA188
C619
0.1
R634
0.68
ZH28
R627
7500
R695
16K
C634
1000P
C518
1.0
C640
0.1
R621
12K
R652
9.1K
R543
2200
R527
220K
C616
1000P
ZH47
R619
0.68
R657
1000
R620
10K
ZH39
Q506
B1CHND000004
P10
K1KA06A00452
F_STB_14V
1
F_STB_14V
2
F_STB_14V
3
GND
4
GND
5
GND
6
R564
470K
Q564
2SD1819A
R920
100K
R558
330K
C525
820/25V
R707
1000
Q519
B1DEHF000002
D508
MA4150-M
C533
0.01
R559
47K
R549
1000
Q558
B1CHHG000002
C511
330
R633
330K
IC503
C0DAEMB00004
132
Q567
B1CBGD000001
R708
100K
D567
WA5001=5
R630
47K
Q562
2SD1819A
C562
0.15
R566
100K
R629
100K
R918
10K
R917
330K
Q512
B1CBGD000001
R635
100K
R539
10K
R553
4700
R638
0.68
R639
0.68
ZH44ZH45
ERROR DET
P-BOARD TNPA3724AB (4/6)
DC-DC CONVERTER
ERROR DET(Vsus)
COUPLER
PHOTO
K5G312B00012
P-BOARD
(2/6)
TO
P-BOARD
(6/6)
TO
(SS11)
TO
SS-BOARD
(SC2)
TO
SC-BOARD
11 1813 14 1715 1610 12
CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO
ADAA AEAB AC AH ALAG ANAI AMAKAF AJ
15
23
12
16
13
14
17
20
22
18
21
11
19
(PA10)
PA-BOARD
TO
TH-42PX50U, TH-42PX500U
P-Board (4 of 6) Schematic Diagram TH-42PX50U, TH-42PX500U
P-Board (4 of 6) Schematic Diagram
Vsus
Csus
TH-42PX50U / TH-42PX500U
18

5.7. P-Board (5 of 6) Schematic Diagram
R480
91K
R580
47K
R577
47K
C504
1.0
IC402
C0BBAA000038
12
5
3
4
R686
1000
R418
47K
R689
1000
C508
0.01
Q551
B1CBGD000001
R685
100K
R425
3300
R615
10K
D434
MA4082M
C631
0.01
Q550
B1CHGD000006
C421
0.01
R692
4700
R583
47K
R503
100K
D403
MA4051N-MKT
C637
0.1[KB]
R640
10K
Q535
2SD1819A
C609
0.01
R519
100K
R578
47K
R497
24K
C402
100p
R542
1000
R677
220K
R514
100K
Q553
2SD1819A
Q544
XN0440100L
R557
470
R501
22K
R523
1000
C583
1000P
C638
0.01
R575
1000
IC411
C0BBAA000038
12
5
3
4
R495
560K
Q417
B1CHND000004
X501
4MHz
R450
1000
R697
100K
R518
100
Q557
2SD1819A
R611
10K
R508
1000
R581
47K
Q537
B1CFQD000001
C418
1.0K
C519
1.0
R525
47K
C507
0.01
R502
100K
Q536
B1CFQD000001
C503
0.01
C405
0.01
C505
1000P
PR503
K5H502Z00003
C623
10/50V
R517
10K
R571
10K
IC403
CNC1S171R
2
1
4
3
C482
0.1
Q421
2SD1819A
C506
0.01
C593
0.22
R536
1000
R510
100K
R625
100K
R486
6800
R504
1000
C612
0.01
R687
10K
IC507
C0CBABE00023
1
2
5
3
4
Q418
2SD1819A
R511
100K
Q403
B1CBGD000001
C639
0.01
IC404
CNC1S171R
2
1
4
3
R623
10K
C635
0.01
Q501
2SD1820A
R416
3300
R568
180
R515
1000
R420
470K
Q502
2SD1820A
C510
0.1
R404
100K
R520
100K
R546
1000
R506
1000
Q552
B1CBGD000001
C502
0.01
R538
100K
R694
100K
C422
0.01
C636
1.0
R653
10K
R688
22K
R487
3300
R541
100K
R617
10K
D402
MA4240-M
D565
MA4160-M
IC401
CNC1S171R
2
14
3
R509
100K
R496
560K
D505
B0JAME000081
C471
1.0
D559
B0BA7R200003
R618
100K
C501
0.01
C411
0.01
R606
1200
IC501
C2ABDD000066
VDD
1
VSS
2
XIN
3
XOUT
4
CNVSS
5
Reset
6
P21
7
P20
8
D5
9
D4
10
21
P01
22
P00 D1
13
D0
14
P13
15
P12
16
P11
17
P10
18
P03
19
P02
20
D3
11
D2
12
23
P31
24
P30
R651
47K
Q554
B1DHBD000004
R408
100K
R678
22K
R693
4700
R569
180
C610
1.0
R453
1000
IC502
C0EBH0000190
1
2
3
R610
10K
R516
1000
R586
47K
C607
1.0
R512
22K
R616
10K
R540
1000
C410
1.0
Q503
XN0440100L
R602
3300
R532
100
R494
560K
R505
33
Q561
2SD1819A
C608
0.01
R684
22K
R513
100K
C626
0.01
R690
10K
Q559
2SD1819A
C509
100/25V
Q538
B1CFQD000001
D555
B0BA7R200003
R535
1000
P-BOARD TNPA3724AB (5/6)
HOT
COLD
HOT
COLD
HOT
COLD
(PFC DET)
COMPARATOR
(AC IN)
COMPARATOR
POWER MCU
RESET
+5V REG
COUPLER
PHOTO
COUPLER
PHOTO
COUPLER
PHOTO
P-BOARD
TO
(3/6)
A
2
D
3 74
F
B
8
C
1
E
695
BA BB BEBC BD BGBF BJBH BI BK BL
31
33
32
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
TH-42PX50U, TH-42PX500U
P-Board (5 of 6) Schematic Diagram TH-42PX50U, TH-42PX500U
P-Board (5 of 6) Schematic Diagram
TH-42PX50U / TH-42PX500U
19

5.8. P-Board (6 of 6) Schematic Diagram
P25
K1KA19A00024
ALL_OFF
18
Panel_Main_ON
17
PS_SOS
16
ECO_ON
15
FAN_SOS
14
F_STBY_ON
13
GND
12
GND
11
STB5V
10
5V
9
GND
8
5V
7
GND
6
GND
5
GND
4
FAN_CONT
3
12V
2
12V
1
RUSH_ON
19
KILL_SOS
20
P30
K1KA05AA0193
5FAN_CONT
45V
3FAN_SOS
2GND
1+15V
P-BOARD TNPA3724AB (6/6)
P-BOARD
(4/6)
TO
141210 13 1511 181716
(D25)
D-BOARD
TO
CHCGCA CD CE CFCB CC CMCJ CLCK CN COCI
36
46
48
52
39
38
33
51
47
31
49
50
45
44
37
34
42
40
43
35
32
41
(PB30)
PB-BOARD
TO
TH-42PX50U, TH-42PX500U
P-Board (6 of 6) Schematic Diagram TH-42PX50U, TH-42PX500U
P-Board (6 of 6) Schematic Diagram
TH-42PX50U / TH-42PX500U
20