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14.54. SC-Board Block Diagram
CEL2
CL
CLK
SIU
SID
SCSU
SCSU
CEL
D6479
D6468
D6459
D6470
PHOTO COUPLER
Q6611
3
5
4
6
9
8
11
10
1
2
13
12
FCLD
FCLU
FCLKD
FCLKU
PHOTO COUPLER
1
2
3
4
PC6505
PC6507
PHOTO COUPLER
PC6509
FSIU
FSID
12
8
14
1
12
8
14
1
Q6612
Q6613
Q6601
Q6602
Q6621
Q6624
14
15
5
17
3
8
12
6
IC6602
FET DRIVER
FET DRIVER
IC6601
20
19
18
17
11
18
2
8
9
12
17
3
6
4
14
16
IC6502
BUFFER
BUFFER
IC6501
2
4
7
FET DRIVER
IC6511
Q6477
Q6476
Q6511
Q6512
7
2
4
FET DRIVER
IC6521
FET DRIVER
IC6541
2
7
4
VAD+15V
Q6530
Q6521
Q6520
Q6522
Q6529
Q6542
Q6549
Q6541
PHOTO COUPLER
PC6510
PHOTO COUPLER
PC6503
Q6551
Q6552
IC6542
2
7
2
4
1
4
1
7
2
FET DRIVER
Q6553
VSCN
Q6614
S2 CMH
S3 CML
CSL
CSH
1/2 Vo
VSUS
D6624
D6629
A6 B6
A7 B7
B33
A33
B40
A40
B37
A34
B36
A37
A36
B34
A11
A35
B11
A39
A38
B39
B38
B35
B1
B8
A8
A1
B8
A8
A30 B30
FSID
FCLD
FCLKD
PROD
VF5V
Q6454
IC6451
AVR 15V
IC6453
3
1
AVR 5V
IC6455
3
1
Q6474
IC6471
Q6472
Q6471
SCSU
VAD INSERT
VAD
VSET2 INSERT
CEL
VSET INSERT
CPH
VSCN GEN VSET
VAD GEN
Q6491
Q6492
IC6491
VSET REG.
VSUS
SC20
7
13
L6611,12,13
L6614,15,16
2
4
8
11
IC6605
BUFFER
IC6606
BUFFER
3
6
9
7
CSH
CSL
CMH
CML
SOS1
CEL2
CL
CLK
SIU
SID
CPH
SCSU
Q6581
IC6581
D6584
Vfo
FSIU
FCLU
FCLKU
PROU
VF5V
Vf
Vf
Vfo
FSID
FCLD
FCLKD
PROD
VF5V
Vfo
Vf
Vf
Vfo
FCLKU
FSIU
VF5V
PROU
FCLU
SC
SC42
SC41
TO D20
D6583
(GREEN LED)
SC
SC
CPH
CEL
4
VSET
IC6452
Q6462
Q6461
Q6463
T6461
IC6456
VSCN GEN VSET
T6471
IC6472
Q6555
Q6501
6
5
Q6502
Q6503
Q6504
SOS2
12
12
9
4
4A
3A
2A
13
2B
3B
4B
11
8
4Y
3Y
2Y
11
9
2
18
13
CEL
Q6583
Q6584
CPH
CEL
IC6607
AND GATE
VSUS
VSUS
1
2
SC2
TO P2
SC23
TO P23
+15V
1
2
+15V
PROU
PROD
11
10
9
8
FLOATING GROUND
COLD CHASSIS GROUND
COLD CHASSIS GROUND
FLOATING GROUND
+5V(SC3)
PC6469
Vscn(VAD+118V=28V)
PC6467
VAD(-90V)
PC6480
PC6458
+5V(SC1)
PHOTO
COUPLER
COUPLER
PHOTO
COUPLER
COUPLER
PHOTO
COUPLER
COUPLER
PHOTO
COUPLER
COUPLER
SCAN
DRIVE
DRIVE
SCAN DRIVER 1
SOS BLINKING TIMES
LED 2 TIMES
SCAN DRIVER 2
SOS BLINKING TIMES
LED 7 TIMES
VOLTAGE DOWN DET
Vscn,VAD(-90V)LINE
+5V(SC1),+5V(SC3)
10
5
6
ENERGY RECOVERY
Vsus GEN.
VSET
TPSC1 WAVEFORM
VAD
VSCN
VSET2
VSUS
(Vfo)
TPSC1
VSCN gen.
VSCN perfect
VSET perfect
(VSET rise)
VSET perfect
D
S
S
D
Q6554
SC46
2
4
6
8
9
10
FCLKD
PROD
FSID
FCLD
VF5V
VF5V
8
4
FCLKU
9
VF5V
FSIU
6
2
FCLU
10
VF5V
PROU
SC45
Q6603
Q6606
Q6607
Q6608
3
6
TO SD42
TO SD46
TO SU45
TO SU41
6
3
2
7
6
4
A33 B33
B40
A40
B2
A2
B5
A4
B3
A5
B4
A3
A1 B1
PC6517
Q6451
PC6474
SCAN DRIVE
TH-37/42PA50E, TH-37/42PE50B
SC-Board Block Diagram
SC-Board Block Diagram
TH-37/42PA50E, TH-37/42PE50B
SC-Board Block Diagram
SC-Board Block Diagram
TH-42PA50E / TH-42PE50B / TH-37PA50E / TH-37PE50B
120
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