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COLD CHASSIS GROUND FLOATING GROUND
SC Scan Drive ENERGY RECOVERY SC44 TO SD44
FSID
IC6505 IC6501 A1 B1 FSID
IC6602 PHOTO COUPLER
BUFFER FCLD
A2 B2 FCLD
FET DRIVER CSH D6624 CL FCLD FCLKD
3 5 1 2 5 6 A3 B3 FCLKD
Q6621
12 8 S
FCLU
IC6605 D L6611,12 3 4
PROD
A4 B4 PROD
TO D20 SC20 BUFFER L6615,16 IC6506 FCLKD
1/2 Vo 13 12 9 8 VF5V A5 B5
S PHOTO COUPLER VF5V
CSL
CSL 17 6 14 14 1
FCLKU A6 B6
Q6624 CLK 11 10
3 5
IC6607 D D6629 A7 B7
Vf
AND GATE Vf
IC6507 IC6502 A20 B20
4A
CSH 18 8 12 12
4B
4Y
11 PHOTO COUPLER BUFFER
13
1A Vsus GEN. SIU FSIU
CBK 14 4 16 1 1Y
3 5 1 2 SC46 TO SD46
1B 3
2
2 FSI
CMH 20 15 5 9
3A
IC6601
3B
3Y
8 S2 CMH IC6508 4 FCL
10 FET DRIVER
Q6611 Q6601 VSUS 6 FCLK
4
2A PHOTO COUPLER
2Y
2B
6 12 8 Q6612 Q6602 8 PRO
5 SID FSID
3 5 3 4 9 VF5V
9 11
10 VF5V
S3 CML
CML 19 17 3 14 1
Q6613 Q6605
IC6509
PROU
Q6614 Q6606 PHOTO COUPLER 5 6 9 8
CEL 13 2 18
SC43 TO SD43
CEL2 PROD
3 5 11 10
A1 B1
Vbk GEN. Vf
Vf
A10 B10
IC6603 VSCN perfect
VBK GEN
IC6606 FET DRIVER IC6511 VSCN A11 B11 VSCN
VSCN
Q6671 Q6673 FET DRIVER
A12 B12 VSCN
BUFFER 14 VSUS SC
Q6672 IC6604 Q6511
TPSC1 A13 B13
CPH 9 11 9 Q6501 2 7
Vfo
Vfo
Q6641 4
SC (Vfo)
12 8 A20 B20
Q6642 Q6512
CEL2 8 13 7 Q6476 VAD+15V SC45 TO SU45
Q6477 2 FSI
Q6603 4 FCL
VSET REG.
VSET perfect 6 FCLK
Q6604 (VSET rise) Q6491 Q6492
VSUS 8 PRO
IC6491
IC6510 IC6521 CPH VSET 9 VF5V
Q6520 10 VF5V
PHOTO COUPLER FET DRIVER
CL 2 2 18 CPH Q6521
1 5 Q6502 2 7
VSET INSERT
CLK 3 4 16 Q6522
4 Q6530
Q6527
SIU 4 6 14
CPH
SC41 TO SU41
SID 6 8 12 VSET perfect (VSET decay)
FSIU
VSCN GEN VSET A20 B20 FSIU
Q6461 Q6462 FCLU
IC6503 IC6541 Q6463 IC6517
A19 B19 FCLU
CEL FCLKU
SCSU 7 17 3 PHOTO COUPLER FET DRIVER Q6542 T6461 IC6456 A18 B18 FCLKU
Q6541
CEL
Q6547 VSCN GEN VSET
IC6453 IC6455 PROU
1 5 Q6503 2 7 A17 B17 PROU
VSET2 INSERT Q6451 T6451 15V 5V
4 VF5V
Q6551 Q6452 IC6434 A16 B16
D6584 3 1 3 1 VF5V
IC6581 Q6454 IC6451
SOS1 11 Q6552 A15 B15
Q6581 Q6455 IC6452
CEL A14 B14
SCAN DRIVER 2 Vf
VSCN gen. Vf
SOS BLINKING TIMES : LED 7 TIMES D6583
A1 B1
(RED LED)
SCAN
IC6504 IC6542 Q6554
VAD GEN
DRIVE PHOTO COUPLER FET DRIVER Q6471 T6471
VAD INSERT
SCSU Q6472 IC6471
1 5 Q6504 2 4 Q6553 Q6555
VAD Q6474 IC6472
SCSU SC42 TO SU42
Q6475 IC6474
A20 B20
IC6458 Vf
Vf
D6459
PHOTO +5V(SC1)
SOS2 12
COUPLER
A11 B11
VSCN A10 B10 VSCN
IC6469
+5V(SC1),+5V(SC3)
A9 B9 VSCN
D6470
TO P2 SC2 Vscn,VAD(-90V)LINE PHOTO +5V(SC3)
COUPLER TPSC1 WAVEFORM A8 B8
VOLTAGE DOWN DET VSET
VSUS 1 Vfo
Vfo
VSUS 2 SCAN DRIVER 1 IC6467
SOS BLINKING TIMES : LED 2 TIMES A1 B1
VSUS
D6468 Vscn(VAD+118V=28V)
PHOTO
COUPLER
VAD
TO P23 SC23
IC6458 VSET2
VSCN
+15V 1
D6479
+15V 2 PHOTO VAD(-90V)
COUPLER
COLD CHASSIS GROUND
FLOATING GROUND
TH-37PE30B/TH-42PE30B TH-37PE30B/TH-42PE30B
SC-Board Block Diagram SC-Board Block Diagram