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14.3. P-Board Block Diagram
P
POWER SUPPLY
TO
AC CORD
P9
F402
L404
LIVE
4
F401
NEWTRAL
1
Q423
Q435
R455,R474
R479,R481
R483,R488
Q430,Q432
TH-37/42PE55E
P-Board Block Diagram
L405
D401
D404
D462
R903-R906
R928-R931
Q424,Q434.Q436
IC407
POWER SUPPLY
Q433,Q441
Q415
Q414
10
T401
Q401
Q420
L403
R443
PFC
IC402
COMPARATOR(PFC)
1
3
1
3
RL403
RL402
MAIN ON/OFF
RUSH ON/OFF
9
Q431
6
Q439
3
1
2
D444
3
2
1
VIN
Isen
EXT
CE/SS
CLK
FB
VSS
4
4
5
7
8
3
Q440
4
Q438
3
4
3
HOT
D417
D419
D420
9
8
4
3
2
Q404
Q406
L402
14
16
D415
8
7
6
5
VCC
IC406
MOS
CURR
DRIVE
DET
POWER
CURR
FACTOR
COMP
CONTROL
1
2
3
4
Q422
Q407
Q418
Q421
PFC DET
5
4
Q417
Q4O3
5
4
IC411
COMPARATOR(AC IN)
T410
15
PR501
16
18
D511
Q511
Q512
D509
14
13
D510
10
IC504
1
IC408
ERROR DET
2
2
REG
1
1
IC412
2
1
IC409
2
COLD
PR401
395V
PR402
C405
IC52
BUFF
HOT
COLD
1
4
IC404
2
3
1
4
IC403
2
3
4
1
IC401
3
2
D567
3
IC502
1
RESET
D555
Q535
STB5V DET
Q501
INV.
Q502
Q503
INV.
Q565
Q567
69
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