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TH-50PX20U-P
14.78. SS, SS2 and SS3-Board Block Diagram
SS
TO P12
SS12
Sustain Drive Board
STB PS
10
TP15V
+15V
4
L6713
VDA
1
TPVDA
VDA
2
L6715
TO P11
SS11
TPVSUS
VSUS
2
VSUS
3
TO C32
SS32
TPSOS3
SOS3
9
IC6706
IC6701
BUFFER
FET DRIVER
Q6732
UMH
8
15
5
12
8
Q6733
6
Q6734
UML
7
13
7
14
1
Q6735
IC6702
FET DRIVER
Q6701
USH
6
11
9
12
8
Q6702
Q6744
USL
5
8
12
12
8
Q6745
IC6703
FET DRIVER
IC6704
FET DRIVER
Q6736
UEH
4
6
14
12
8
Q6737
14
1
IC6705
FET DRIVER
UEL
UEL
3
4
16
Q6725
2
7
UEL
4
IC6901
IC6902
BUFFER
FET DRIVER
DSHL
14
2
18
12
8
Q6911
IC6905
FET DRIVER
Q6922
DSLL
15
4
16
12
8
Q6923
IC6903
FET DRIVER
Q6917
Q6918
DMHL
16
6
14
12
8
DMLL
17
8
12
14
1
Q6919
Q6920
IC6904
SS-BOARD
SOS DET
SOS2
19
TH-50PX20U-P SS, SS2 and SS3-BOARD Block Diagram
SS34
1
15V
SS57
SS21
SS51
Q6711
UMH
Q6714
S2
SS52
Q6715
UML
S3
Q6720
SS53
USH
S1
L6701
D6711,12
Q6721
Q6722
L6704
L6767
TPSS1
Q6723
SS58
SS31
Q6724
D6715,16
SS-BOARD
USL
SOS DET
DISCHARGE
Q6741
IC6707
1/2 Vo
D6760
SS54
(RED LED)
UEH
VE
Q6727
INSERT
Q6728
SS55
+15V
D6764
(RED LED)
SS56
Q6729
Q6730
Q6731
Q6739
TPVe
Q6738
IC6709
R6770
Ve
VE
GENERATOR
TPSVDA
TPVDA
SS35
Q6921
1
Vda 75V
L6925
2
Vda 75V
L6930~L6933
4
78V
5
78V
Q6912
SS42
Q6924
1
Vda 75V
2
Vda 75V
4
78V
Q6913
TPSS4
5
78V
Q6914
Q6915
Q6916
SS2
Sustain Connection
(Upper) Board
SS41
SS3
Sustain Connection
(Lower) Board
SS48
TO C3 BOARD
(C35)
TO C4 BOARD
(C42)
142
TH-50PX20U-P SS, SS2 and SS3-BOARD Block Diagram
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