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14.11. P-Board Block Diagram (42inch)
V1
A
C_L
2
15V(FAN)
2
20
13
6
2
9
5VC
P10
18
5
11
16
PC_PFC_ON
STB_IN
19
23
T501
VS_L
VP1
IIn
1
PFC CONTROL
SW_MAIN
18
16
OUT
MC701
17
16
-PFC
Q606
2
7
L604
4
FAN SOS
P11
VCC
5
FAN_SOS
24
3
12V_ON/OFF
GATE
VDA
1
POWER MODULE
6
-GND
RECTIFIER
15VD
F_STB_ON
L606
(HOT)
Vsus
1
VR351
F_STB_14V
PS_SOS
11
TH351
D
2
19
4
ERROR DET
Q453
OSCILLATOR
4
Q333
MC601
STB POWER CONTROL
FB-
D306
50/60Hz
Exchanged board only
AC-
R
USH ON/OFF
1
4
1
1
17
K601
5V
9
5V_ON
S2B
VSUS
9
PANEL_ON
11
23
9
19
ON/OFF
15V_DET
6
10
HOT
ALL_OFF
15V_IN
POWER MODULE
D308
D452
PFC
AC+
IC501
GND(BIAS)
Q551
F_STB_ON
L=OK
6
3
T301
STB ON/OFF
4
D453
MC501
VS-OUT
S6
+5
IC301
3
26
11
POWER CONTROL
Exchanged board only
POWER MODULE
18
PFC
10
TO D5
1
ZD404
8
15
1
Q451
7
POWER MODULE
5V_ON
7
MC301
14
14
4
12VS(W)
PS_SOS
5
DISCHG
D307
Vsus 188V
D305
5V_OUT
Exchanged board only
11
MC602
1
P23
STB_OFF
15
L601
3
F14V_ON/OFF
2
8
18
8
24
D451
AC-
ZD310
AC_N
6
Q601
20
2
P12
P5
V2
1
IC401
P
9
D351
TO SS11
VS_L
VP2
L401
TO PB5
16
STB_IN
F_STB_14V
3
PC_HV_ON
VS_LVP2
SW_MAIN
H=SOS
DC(+)
STB_ON
15VD
+15V
FB
P1
6
VSUS
VSUS
DC(-)
STB_OFF
POWER SUPPLY
VD
A_DET
HV_ON
S3
19
14
PC_PFC_DET
BIAS
10
RF601 3A
ALL_OFF
PFC_ON
ON
P25
12VC
9
HV_ON
3
Q452
3
10
13
POWER SUPPLY
12VC
AC IN
PG
2
1
1
20
3
S1
NEUTRAL
1
4
P2
17
R352
5
(HOT)
COLD
14
15V
ON/OFF
ON/OFF
ZD601
2
2
Exchanged board only
7
3
A
C_DET
ERROR DET
12VS(S)
HV_ON
VS_STOP
VSUS
S2A
12VS(W)
2
STB_OUT
ZC
SW_MAIN
S5B
7
K602
D454
4
5
MAIN ON/OFF
Q603
V3
4
FAN CONT
MC603
2
+5
4
D602
VS_OUT
4
COLD
VDA
L602
MC604
VS_LVP1
8
2
PFC
ISUS
Exchanged board only
Q554
13
POWER MODULE
AC-
12VC
14
1
17
+5VC
4
F_STB_14V
7
(COLD)
MAIN SW
ON/OFF
ON/OFF
POWER MODULE
6
PG
3
POWER MODULE
4
VDA OSC
2
V4
VS_ST
OP
5
LIVE
STB_OUT
MC303
Exchanged board only
9
3
(COLD)
MC401
PC503
FAN_CONT
AC DET
P
ANEL_ON
D501
Q553
TO SC23
220-240V
VDA
TO PA10
TO SS12
POWER MODULE
1
8
S5A
6
POWER OUTPUT CONTROL
1
7
8
P9
21
3
DRIVE VOLTAGE
18
2
Exchanged board only
ZD409
25
PFC
VSUS
Q555
4
ZD309
8
3
3
5
7
10
18
VR451
Q605
4
12V/15V_ON
8
1
BIAS
5
12VC
Exchanged board only
1
BIAS
CNPFC
HOT
TO SC2
12
ZD408
21
7
22
5
15VD
VIN
PG
OSCILLATOR
RFCO_ON
8
25
15VD
16
RLY-
FB_MULTI
23
IPD
Q602
FB_STB
Q332
ON/OFF
VSUS
OVP
BIAS
RLY-
STB5V
+5VC
P30
TO PB30
P2
D455
MC303
2
F14V_ON
22
DRIVE VOLTAGE
S4
T401
RUSH
1
3
12
MC603
B4
P1
B3
P2
B1
B2
S2
S1
B1
S2
P1
P2
B2
S1
+15V
+15V
F_STB 14V
VDA
5V
D551
HOT
COLD
TH-42PV500E/B
P-Board Block Diagram
P-Board Block Diagram
TH-42PV500E/B
P-Board Block Diagram
P-Board Block Diagram
TH-42PV500E / TH-42PV500B / TH-37PV500E / TH-37PV500B
105
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