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395V
PR402
10
C405
T402
2
16
15
13
IC520
BUFFER
2
4
COLD
4
IC404
3
IC509
4
IC403
DC-DC CONVERTER
3
1
IC401
2
R671
Vsus
IC501
POWER MCU
D567
1
VDD
2
VSS
3
IC502
3
XIN
1
4
XOUT
RESET
X501
4NHz
6
RESET
D555
Q535
7
STB PS
STB5V DET
8
PFC DET
Q501
F STB PC
9
ON/OFF
10
DISCHARGE
V LOW ON/OFF
V.
11
MAIN RELAY
Q502
Q503
12
RUSH RELAY
V.
Q565
Q567
69
HOT
COLD
D539
13
14
T404
D531
1
9
Q412
3
OSC
2
Q408
4
15
D534
7
8
11
6
Q413
5
OSC
Q409
2
1
9
6
5
3
4
T407
D568
6
5
4
D530
12
6
Vsus POWER CURCIUT
Q507
Q506
T601
9
6
8
7
5
VCC
GD
ZCD
5
4
3
INV
VFF
CB
1
3
4
IC505
4
1
3
2
24
ECO ON/OFF
23
F STB ON/OFF
V LOW DET
22
AC P DET
21
20
TV ON/OFF
VSUS DET
19
STB ON/OFF
18
17
PS SOS
16
PFC ON/OFF
Q550
15
INV.
VSUS
Q551
14
ON/OFF
13
ALL OFF
Q518
Q560
SW
Q564
Q562
INV.
Q527
D532
D542
D544
D536
Q516
Q510
Q541
Q520,Q517
Vlow POWER CURCIUT
PR601
IC506
Q505
ERROR DET(Vsus)
3
REG
1
R628
Vsus
Q530
Vsus DET
Q525
Q552
INV.
Q561
STB 5V
INV.
Q559
INV.
Q557
INV.
Q544
PR503
ALLOFF SW
IC507
1
REG
5
+5V REG
F STB 14V
F STB 14V
Q519
SW
Q558
SW
IC503
2
1
ERROR DET
Vda 75V
D545
2
1
3
IC512
ERROR DET
1
(Vda)
R665
2
Vda
3
DC15V
D535
PR509
DC12V
D521
1
Q509
R661
2
Vlow
VlOW DET
3
Q508
VlOW DET
Vsus 188V
Q536
SW
Q537
Q538
SW
STB 5V
Q554
Q553
SOS BLINKING TIMES
PS SOS
LED 4TIMES
TH-37/42PE55E
P-Board Block Diagram
TO
P12
SS12
1
Vda
+15V
2
5
STB12V
4
STB_PS
TO
P23
SC23
1
+15V
2
+15V
TO
P11
SS11
2
Vsus
3
Vsus
TO
P2
SC2
1
Vsus
2
Vsus
TO
P5
PB5
1
+12V
2
+12V
4
+15V
6
+12Vs
7
+12Vs
8
+12Vs
NO
P30
USE
1
+15V
4
+5V
5
FAN CONT
FAN SOS
3
TO
P25
D25
1
12V
2
12V
3
FAN CONT
7
+5V
+5V
9
STB5V
10
13
F STBY ON
14
FAN SOS
ECO_ON
15
17
PANEL MAIN ON
16
PS SOS
18
ALL OFF
TO
P10
PA10
1
F STB 14V
2
F STB 14V
3
F STB 14V
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