14.5. P-Board Block Diagram
-
+
-
+
D404
D401
NEUTRAL
350V
LIVE
D410
D409
D510
D511
D557
D434
350V
L403
F405
PFC
DC400V
PR401
Q414
Q415
Q412
Q413
D419
D420
D539
D537
DC180V
D555
X501
4NHz
D521
D530
D563
D531
Q527
DC85V
D534
D536
D533
D543
D541
R665
R443
DC75V
DC15V
DC15V
DC12V
DC5V
D535
PR509
D564
R661
1
2
3
R608
PR510
D549
D554
D565
D506
D505
PR502
D553
R641
3
1
P9
8
6
T410
5
IC409
4
2
1
4
3
1
2
3
4
IC408
Q403
Q416
14
15
13
10
R
K
A
IC504
STB7V
4
3
5
8
7
2
1
6
4
2
1
3
1
3
4
2
1
3
4
2
IC404
IC403
IC401
STB7V
3
9
8
14
4
2
16
10
T401,T406
5
8
7
6
VCC
MOS
DRIVE
CURR
DET
CURR
COMP
2
1
3
4
IC402
Q407
PFC
Q420
Q401
AMP
Q404
Q406
L402
D415
Q410
Q411
DRIVE
IC406
POWER
FACTOR
CONTROL
2
8
16
T405
5
12
10
7
6
9
2
T403
9
1
8
5
7
10
T402
Q504
3
Q514
RL401
RL402
Q535
Q501
Q522
Q503
Q502
8
6
10
7
5
9
2
3
4
1
11
15
20
14
18
19
12
13
17
16
VDD
VSS
XIN
XOUT
RESET
P21
P20
D3
D2
P00
P01
P02
P03
P10
P11
P12
P13
D0
D1
IC501
3
1
IC502
RESET
STB5V
CLR
PR
7
3
1
6
Q
CK
2
D
5
Q
Q515
Q525
Q528
1
3
6
4
IC522
2
5
1
4
6
Q512
Q517
Q551
Q513
Q506
Q511
3
T407
5
11
2
9
12
8
T404
14
13
7
Q519
Q545
Q518
Q510
D544
D545
R
K
A
IC512
Vda
1
4
5VAVR
IC511
1
3
6
4
IC520
Q
CK
2
D
IC523
5
Q
CLR
PR
7
3
1
6
Q516
Q540
Q543
Q521
Q542
Q541
Q509
Q508
Q524
Vlow
Vsus
Q520
Csus
1
2
4
Vda
TO SS-BOARD
SS12
P12
Vda
+15V
+15V
1
2
P7
+15V
+12V
TO Z-BOARD
1
2
7
Z5
P5
+12V
+12Vs
3
5V
+12Vs
8
+15V
11
1
+15V
2
+15V
P23
TO SC-BOARD
SC23
SS11
P11
2
1
Vsus
TO SS-BOARD
TO SC-BOARD
P2
SC2
2
1
Vsus
Vsus
Vsus
PS SOS
ALL OFF
4
8
STB5V
TO D-BOARD
FAN SOS
2
7
P27
D27
TV ON/OFF
6
FAN CONT
STB7V
2
8
+12V
TO D-BOARD
5V
1
7
P25
D25
+12V
5
Q544
PS SOS
TV ON/OFF
ALL OFF
Q537
Q552
3
1
P33
P32
3
1
P31
3
1
P30
3
VCC
1
FAN SOS
FAN SOS
VCC
VCC
FAN SOS
FAN SOS
VCC
Q531
Q530
Q532
FAN
Q421
POWER MPC
COLD
HOT
COLD
HOT
P
Power
Supply
Board
3
M.POWER
Q546
ALL OFF
10
STB_PS
V SUS
STB5V
STB7V
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
TH-50PX20U-P
P BOARD Block Diagram
TH-50PX20U-P
P BOARD Block Diagram
TH-50PX20U-P
69
Summary of Contents for TH-50PX20U/P
Page 4: ...1 Applicable signals 4 TH 50PX20U P ...
Page 9: ...6 Location of Lead Wiring 6 1 Lead of Wiring 1 9 TH 50PX20U P ...
Page 10: ...6 2 Lead of Wiring 2 10 TH 50PX20U P ...
Page 11: ...6 3 Lead of Wiring 3 11 TH 50PX20U P ...
Page 12: ...6 4 Lead of Wiring 4 12 TH 50PX20U P ...
Page 13: ...6 5 Lead of Wiring 5 13 TH 50PX20U P ...
Page 14: ...6 6 Lead of Wiring 6 14 TH 50PX20U P ...
Page 23: ...9 4 IIC mode structure following items value is sample data 23 TH 50PX20U P ...
Page 32: ...32 TH 50PX20U P ...
Page 64: ...TH 50PX20U P 64 ...
Page 146: ...TH 50PX20U P 146 ...
Page 147: ...15 Parts Location 15 1 Parts Location 1 147 TH 50PX20U P ...
Page 148: ...15 2 Parts Location 2 148 TH 50PX20U P ...
Page 149: ...15 3 Parts Location 3 149 TH 50PX20U P ...
Page 150: ...15 4 Parts Location 4 150 TH 50PX20U P ...
Page 151: ...15 5 Parts Location 5 151 TH 50PX20U P ...
Page 154: ...17 Replacement Parts List 17 1 Replacement Parts List Notes 154 TH 50PX20U P ...