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TH-37PH10HK / TH-37PH10HS / TH-42PH10AK / TH-42PH10AS / TH-42P H10MK / TH-42PH10MS / TH-42PH10GK / TH-42PH10TS
1.4. P-Board Block Diagram
TO
AC CORD
LIVE
NEUTRAL
11
12
15
16
Q564
Q565
7
41
3
2
COLD
10
9
3
6
4
7
8
2
5
1
T404
RESONANCE
CONVERTER
(120-145KHz)
BUFF
BUFF
PR601
10
T601
23
KA
D540
D539
D506
D536
IC508
180k
x4
REF
IC509IC511
REF
41
IC505
3
2
POWER SOS
LED BLINKING : 4TIMES
D531
73V
+
15V
KA
54
213
PHOTO
COUPLER
Vdat OVER VOLTAGE
DETECTION(100V
C555
R670
D569
D570
D571
D572
D549
R579
D579
D521
Q530
IC506
ERROR DET
IC510
DC-DC CONV.
(Vsus)
Q524
25V)
Vlow
POWER
CIRCUIT
Q527
Q520 Q517
PR509
D535
Q509
VlOW DET
BUFF
Q541
Q508
VlOW DET
VOLTAGE
OUT
DETECTION
(60V
Q535
Q525
K
31
A
2
Q563
Q553
INV.
D544 D545
R631R674
R676
R661
Vlow
5V OUT
DETECTION
(3V 1.0V)
Vsus 192V
R622
R648
40V)
R636
R626
Vref
R627
R628
Vsus
12V ON/OFF
Q554
21
OUT
PR505
Vcc
IC512
ERROR DET
(Vda)
K
3
1
2
3
R649
R650
Vda75V
1
A
2
1
R665
2
Vdat
3
P12
1
2
4
8
10
P11
1
3
P2
1
3
P5
1
2
3
4
5
10
12
13
15
17
16
18
20
P6
1
2
3
7
8
9
P7
1
2
5
6
8
9
10
P25
1
2
5
6
9
11
12
13
TO
SS12
Vdat
Vdat
+15V
STB12V
STB_PS
TO
SS11
Vsus
GND
TO
SC2
Vsus
GND
NO
USE
+15Vs(S)
+15Vc
+15Vs(S)
+15Vc
+15Vs(S)
STBY5V
F_STBY_ON
F_STB
F_STB
F_STB
ALL_OFF
AC_GOOD
+5Vc
TO
DS6
+15Vs(S)
+15Vs(S)
+15Vs(S)
F_STBY
F_STBY
F_STBY
TO
DS4
+15Vc
+15Vc
STBY5V
F_STBY_ON
ALL_OFF
AC_GOOD
+5Vc
TO
D25
+15Vc
+15Vc
+5Vc
+5Vc
STBY5V
PANEL_MAIN_ON
SOS4_PS
VDATA_DET
HOT
P
POWER SUPPLY
4
3
9
7
5
4
7
2
IC406
T401
87
10
PFC
Q420
D418
T410
RCC CONV.
(100KHz)
15
14
D511
13
12
11
D509
10
5V
1
IC408
PHOTO
COUPLER
2
IC504
ERROR DET
21
451
6
12 139
11
VCC
RL402
STB_12V
STB5V
3
2
3
14
1615
5876
CURR
MOS
DET
DRIVE
CURR
COMP
2134
Q422
R411
MAIN
RELAY
ON
Q501
1
2
3
RL403
STB5V ON/OFF
R441
R442
R445
R447
R470
340kx6
R455
R444
R443
PFC
RUSH
RELAY
ON
ON
D522
D523
Q404,Q406
R405,D415
R472
R475
R479
R480
27.4kx6
Q502
RL401
LINE FILTER
L405L404
D401
-+
RECTIFIER
L403
Q401
SW
PR402
SW
Q402
D407
Q407
F401
P9
250V 8A
4
F402
250V 8A
1
F403
L410
LINE
FILTER
T630mA
250V
R413
D404
-+
RECTIFIER
IC411
ERROR DET
Vref
23
AK
Q434
R435
R427
R420
R415
R410
R407
D435
IC409
8
Source
7
Source
53
Drain
D416
Q411
1
IPD
Source
1
Source
2
Source
4
Control
D441
Q410
OVER
VOLTAGE
PROTECTION
(490V
0.1
D417
D419
D420
134
2
421
3
80V)
IC520
COLDHOT
(PFC_ON/OFF)
C446
C469
POWER
CONTROL
(Vlow)
IC403
PHOTO
COUPLER
(AC DET)
RESET
IC401
PHOTO
COUPLER
IC502
RESET
395V
95610
Q536
ON:H
ON:L
ON:H
12
P_OUT
2
1
+
-
PR401
T402
243
13
P_OUT
FB
46
2
X501
4NHz
Q409
1615
VDD2
VDD1
Vref
5V
CRT_ON
1
VDD
2
VSS
3
XIN
4
XOUT
6
RESET
7
STB PS
8
Vdat_GO_L
STB 5
9
ON/OFF
10
LOW 15
11
MAIN RELAY(H)
12
RUSH RELAY(H)
OSC
Q566
POWER MCU
F_5A_250V
Q408
OSC
Q413
OSC
D701
IC501
F_15V_ON/OFF
V LOW ON/OFF
Q537
Q521
D602
Q507
PANEL_
MAIN_ON
AC_DET/
F STB H
V LOW DET
AC_P_DET
(FAIL:H)
AC_GO_L
VSUS DET
SOS4_PS
PFC ON/OFF
ON/OFF
ALL OFF
Q412
IC513
Vda DET
KA
IC507
PHOTO
COUPLER
VSUS
OSC
24
23
22
21
20
19
18
17
16
15
14
13
Q540
Q510
REF
GO:L
ON:L
ON:L
ON:H
ON:L
HOT
4
IC412
2
COLD
PHOTO
COUPLER
Q569
3
Q555 Q556
DC/DC CONV. DC/DC CONV.
(15V) (F STB 5V)
ECO
1
D
G
4
6
7
DDD
S85S
3
S
12
H-37PH10HK/HS
H-42PH10AK/AS/MK/MS/GK/TS
-Board Block Diagram
92
8756
DDDD
S
1S2SG34
TH-37PH10HK/HS
TH-42PH10AK/AS/MK/MS/GK/T
P-Board Block Diagram
![](/html/55/551c/551ce6261ca1ea7e7cfdf274ace8d87170dcff6be80588c6a9b7d9b309189dfb/bg2.png)
15.5. P-Board (1 of 6) Schematic Diagram
TH-37PH10HK / TH-37PH10HS / TH-42PH10AK / TH-42PH10AS / TH-42P H10MK / TH-42PH10MS / TH-42PH10GK / TH-42PH10TS
COLD
HOT
TO
AC CORD
COLD
HOT
COLD
HOT
1
2
3
PFC
P-BOARD (1/6)
TNPA4268AB (37 inch)
TNPA4221AK (42 inch)
A B C D E F G H I J
TH-37PH10HK/HS TH-42PH10AK/AS/MK/MS/GK/TS
P-Board (1 of 6) Schematic Diagram
TO
P-BOARD
(3/6)
TH-37PH10HK/HS
TH-42PH10AK/AS/MK/MS/GK/TS
P-Board (1 of 6) Schematic Diagram
3
4
5
96 8712
93
![](/html/55/551c/551ce6261ca1ea7e7cfdf274ace8d87170dcff6be80588c6a9b7d9b309189dfb/bg3.png)
TH-37PH10HK / TH-37PH10HS / TH-42PH10AK / TH-42P H10AS / TH-42P H10MK / TH-42PH10MS / TH-42PH10GK / TH-42PH10TS
15.6. P-Board (2 of 6) Schematic Diagram
COLD
HOT
TO
SS-BOARD
(SS12)
1
2
3
HOT
COLD
HOT
COLD
ERROR DET
(Vda)
POWER
CONTROL
(Vlow)
AA AB AC AD AF AH AJ
TH-37PH10HK/HS TH-42PH10AK/AS/MK/MS/GK/TS
P-Board (2 of 6) Schematic Diagram
P-BOARD (2/6)
TNPA4268AB (37 inch)
TNPA4221AK (42 inch)
TO
P-BOARD
(4/6)
AGAE AI AK
AL AM AN AO AP AQ AS
AR
TH-37PH10HK/HS TH-42PH10AK/AS/MK/MS/GK/TS
P-Board (2 of 6) Schematic Diagram
16 181513 1411 171210
94