14.4. PF-Board Schematic Diagram
+
L.F
+
L.F
+
+
+
OVP
Q
Vref
-
Soft
-
VOVP
Thermal
Vcc(start)
S
IF/B
+
R
GND
Q
comp
Detection
+
UVLO
Vcc
comp
Zero Current
Limit
F/B
Current
Limit
Z/C
drive
On Time Timer
+
R
On Dead Timer
D
Timer
comp
VUL
+
Stand-By
Peak
S
-
-
+
Restart
Latch-stop
Current
/Vcc(startup on)
UVLO
Vcc(startup off)
-
S
Startup
comp
Burst Peak
Startup
Shutdown
/Vcc(stop)
L.F
-
+
L.F
400Vp
400V
400V
DC400V
-140Vp
DC187V
-140Vp
Q990
2SD13280TL
JS80
5W
R904
1.8
**
**
CF901
ERZV10V621P2
1%
R934
13k
C924
50V
1000p
C903
250V
1u
**
C928
25V
220u
LF915
G0B123K00001
1
*
2
*
3
*
4
*
JS12
1%
R974
16.9k
1/2W
R924
22
D971
B0HAPM000012
GT
GT
C915
250V
0.22u
**
S901
J0LT00000009
D921
B0EAKT000018
R973
1k
C971
25V
3300u
T920
ETS29AK7E6AD
2
S3
3
S4
5
S1A
7
S2A
8
S2B
10 V1
11 V2
12 NC
13 NC
14 P1
*
15
NC
16 PT
17 NC
18 P2
*
6
S1B
LF911
G0B353G00001
1
*
2
*
3
*
4
*
TP979
0
R994
PF2
1
**
3
4
**
R990
3.3k
L920
G0ZZ00001937
*
*
K5D312BK0012
F902
D970
FMLG12SLF118
*
*
PF10
1
2
3
4
5
6
7
8
9
10
C901
250V
1u
**
JS9
TP904
TP977
TP903
R935
10
L922
EXCELDR35V
C920
200V
560u
**
**
ZA901
K4ZZ01000121
C914
470p
R971
470
R976
2.2k
C990
50V
10u
C926
50V
100p
C923
400V
0.01u
L970
EXCELSA24T
R922
220k
L973
10u
D925
B0HCMM000001
F900
K5Y802B00001
L921
EXCELSA24T
C973
25V
1000u
C922
50V
0.1u
C970
1kV
330p
R992
47k
JS20
C910
220p
C917
1000p
JS70
CF902
ERZVG7Z361
C0DACZH00002
IC920
3
1
4
5
*
2
TP978
1%
R926
9.31k
RL901
K6B1ADA00023
*
*
JS10
IC970
AN1431M-E1
CA
THODE
3
1
REFERENCE
ANODE
2
2W
R923
10
D922
MAZ31000ML
LF904
G0B123K00001
1
*
2
*
3
*
4
*
D920
B0EBNT000002
*
*
*
*
JS11
JS22
1%
R925
10k
C975
50V
0.047u
0
R993
R928
3.9k
L972
0
JS19
TP901
JS73
R972
100
R929
100
C916
1000p
JS21
C911
220p
R970
560
F901
K5Y802B00001
1/2W
R901
1M
**
C902
250V
0.22u
**
R940
6.8k
C921
2kV
1500p
**
D990
MA3X152K0L
D926
MA3X152K0L
IC921
B3PAA0000261
C974
50V
2200p
LF909
G0B123K00001
1
*
2
*
3
**
4
*
L971
10u
1%
R975
2.32k
C972
1kV
330p
C925
50V
2200p
R927
100
PF1
1
**
3
4
**
NR_20.5V
NR_20.5V
N
LIVE
GND
PF_AC_ON/OFF
NR_14V
HOT
LIVE CIRCUIT
COLD
HOT
T8AH 250V
COLD
STAND-BY 5V
GND
1
2
3
4
REF_2.5V
COLD
T8AH 250V
GND
GND
GND
PA-BOARD
T3.15AL-250V
N
AC
LIVE
AC
NC
AC CODE
GND
3
1
8
7
4
2
A
5
6
D
E
C
B
(PA10)
TO
(P9)
TO
P-BOARD
PF-BOARD TXNPF1QKSU
!
=
=
<
#
<
=
=
*
*
<
=
$
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TH-42PX20U-P
PF-BOARD Schematic Diagram
TH-42PX20U-P
PF-BOARD Schematic Diagram
!
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ERROR DET
POWER CONTROL
66
Summary of Contents for TH-42PX20U/P Operating
Page 9: ...6 2 Lead of Wiring 2 9 ...
Page 10: ...6 3 Lead of Wiring 3 10 ...
Page 11: ...6 4 Lead of Wiring 4 11 ...
Page 12: ...6 5 Lead of Wiring 5 12 ...
Page 34: ...15 2 Parts Location 2 34 ...
Page 35: ...15 3 Parts Location 3 35 ...
Page 36: ...36 ...
Page 37: ...15 4 Parts Location 4 15 5 Parts Location 5 37 ...
Page 38: ...38 ...
Page 42: ...17 2 Electrical Replacement Parts List 42 ...
Page 54: ...D12 K1KA07A00189 7P CONNECTOR 1 54 ...
Page 348: ...1 Applicable signals 4 TH 42PX20U P ...
Page 353: ...6 Location of Lead Wiring 6 1 Lead of Wiring 1 9 TH 42PX20U P ...
Page 354: ...6 2 Lead of Wiring 2 10 TH 42PX20U P ...
Page 355: ...6 3 Lead of Wiring 3 11 TH 42PX20U P ...
Page 356: ...6 4 Lead of Wiring 4 12 TH 42PX20U P ...
Page 357: ...6 5 Lead of Wiring 5 13 TH 42PX20U P ...
Page 358: ...6 6 Lead of Wiring 6 14 TH 42PX20U P ...
Page 367: ...9 4 IIC mode structure following items value is sample data 23 TH 42PX20U P ...
Page 376: ...32 TH 42PX20U P ...