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14.46. SS, SS2 and SS3-Board Block Diagram
SS
TO P12
SS12
Sustain Drive Board
STB PS
4
TP15V
+15V
2
TPVDA
VDA
1
TO P11
SS11
TPVSUS
VSUS
2
VSUS
3
TO C23
SS23
VDA
11
SOS
9
IC6706
UMH
8
17
UML
7
USH
6
USL
5
UEH
4
UEL
3
15
TH-42PA20B/E
SS,SS2 and SS3-Board Block Diagram
15V
L6703
L6704
L6702
IC6701
BUFFER
FET DRIVER
3
12
8
6
6
12
14
1
IC6702
FET DRIVER
6
14
12
8
4
16
14
1
+15V
IC6703
FET DRIVER
2
18
12
8
VCC
3
D6769
(RED LED)
IC6704
FET DRIVER
1
VCC
VEL
5
2
In
Vb
8
VEL
Vs
6
UMH
Q6711
Q6701
Q6712
Q6702
S2
UML
Q6713
Q6705
Q6714
Q6706
S3
S1
D6724
USH
Q6721
D6729
Q6724
USL
DISCHARGE
1/2 Vo
UEH
VE
Q6741
INSERT
Q6742
VE2
Q6745
Q6746
Q6751
TPVe
Q6753
IC6711
R6774
VE
Ve
GENERATOR
SS-BOARD
SOS DET
Q6756
IC6705
D6765
(RED LED)
L6711
TPSS1
L6713
L6716
SS34
TO K34
1
STB-PS
SS2
SS48
SS47
SS45
SS41
SS42
SS43
SS44
SS3
SS49
SS40
SS46
82
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