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380V
Drain
3
Rg2
Rg1
2
Source
OCP/FB
1
GND
5
IC550
OUT
3
1
IN
2
Drain
3
Rg1
OCP/FB
1
2
Source
GND
5
HOT
IC401
STANDBY
3
VOLTAGE
2
CONTROL
1
17V
13.5V
39
T501
10
9
12
7
14
6
15
4
17
18
70V
2
19
1
20
D565
1
IC553
ERROR
T502
DETECT
3
1
18
12V
2
17
15Vs
3
16
4
15
12V
14
13
15V
7
12
8
11
9
10
COLD
D566
Vda
1
2
T401
3
8
9
IC557
7
10
ERROR
6
11
DETECT
12
4
13
3
14
2
15
1
D408
1
2
IC402
3
ERROR
+
DETECT
Q401
Q403
Q402
Q557
Vsus
2
REGENERATIVE
CONTROL
Q552,3,4
IC554
IC555
AVR 5V
1
IC403
AVR 5V
7V
1
2
TVON/OFF
RUSH ON/OFF
5V
5V
190V
Q555
1
2
3
IC558
ERROR
DETECT
2
Q404
3
Q558
TH-42PA20B/E
P and PF-Board Block Diagram
TO SS11
P11
2
VSUS
3
VSUS
P2
TO SC2
1
VSUS
VSUS
2
P10
DR15V
1
3
FAN SOS
4
5V
P23
TO SC23
DR15V
1
2
DR15V
TO PA5
P5
11
DR15V
1
12V
2
12V
3
5V
4
STB5V
7
+12Vs
+12Vs
8
P7
TO PA7
+15Vs
1
2
+15Vs
P25
TO D25
1
12V
2
12V
5
5V
P27
TO D27
1
RUSH ON/OFF
TV ON/OFF
2
3
M POWER
4
STB 5V
5
KILL SOS
6
FAN SOS
7
PS SOS
8
ALL OFF1
TO SS12
P12
1
VDA
DR15V
2
4
STB PS
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