Sc-Board Block Diagram - Panasonic TH-50PZ750U Service Manual

TH-50PZ750U

15.66. SC-Board Block Diagram

SC2
TO P2 TPVSUS
+185V
Vsus 1
SC
TO P23
P+15V
23
P+15V 1
P+15V 2
IC6561
BUFFER
SC
TO D20 P+5V
20
P+5V 1 P+5V
CL
CL 2
CLK
CLK 3
SIU
SIU 4
SID
SID 6
SCSU
SCSU 7
CEL2
CEL2 8
P+5V
CPH1
CPH 9
CPH2
CEL
CEL 13
CSL
CSL 17
CSH
CSH 18
CML
CML 19
CMH
CMH 20
CEH
CEH 14
SC_SOS1 11
IC6562
SC_SOS2 12
BUFFER
IC6581
Q6581
TPSOS6
ENERGY RECOVERY SOS DET
LED BLINKING
TPSOS7
SC FLOATING PART SOS DET
LED BLINKING
SC SCAN DRIVE
TH-50PZ750U
SC-Board Block Diagram
+15V
DC/DC
CONVERTER
C6791 C6795
VSET
105V
IC6791
+240V
VSET Gen.
P+15V R6833
R6836
D6825
R6837
IC6821 (+33V)
Q6824
Q6821,Q6822
Vset SOS DET
PC6701
P+5V
P+5V
CL
PHOTO
COUPLER
CLK
P+5V
SIU
PHOTO
SID COUPLER
PC6702
Vsus Gen.
IC6501
Q6511 Q6514
Q6516 Q6519 Q6401 Q6405
FET
HO PC6703
P+15V
OUT
FET
Q6421 Q6425
LIN DRIVER
P+5V
FET
HIN LO CEL2
OUT
PHOTO
CPH2
COUPLER
+5V
CPH1
ENERGY RECOVERY
PHOTO
COUPLER
IC6521
Q6531,Q6532
PC6704
Q6551,Q6552 Q6441 Q6443
FET
P+15V HO
OUT
FET
HIN
Q6451 Q6453
DRIVER
FET
LIN
LO
OUT
PC6705
CEL
PHOTO
P+15V COUPLER
COMPARATOR SCSU
R6581
D6581
(+33V)
D6585
D6582 IC6803
(+33V)
D6583
6 TIMES
LED(G)
T6602
D6806
VSET SOS
7 10
D6826
6 11
12
OSC
7 TIMES 4 13
2 15
PC6801
IC6472
PHOTO
COUPLER
D6480
B +5V(SC1)SOS
Y
PC6480
A
+5V(SC1) SOS DET PHOTO
COUPLER
PC6760
D6760
+5V(SC3) SOS DET
PHOTO
COUPLER
PC6861
D6862
Vscn SOS DET
PHOTO
COUPLER
PC6871
D6872
VAD SOS DET
PHOTO
COUPLER
Vfo SOS DET
PC6610
D6616
Vfo SOS DET
PHOTO
COUPLER
C6796
D6721 TPVAD
TPVSET
IC6725
IC6724
+5V(SC2) +5V(SC1)
+5V
+5V
AVR AVR
+5V +5V
1 3 3 1
D6619
(SC1) (SC2)
2 2
IC6721
+5V
CL FCLU
FCLD
CLK BUFFER
FCLKU
FCLKD
GND
SIU FSIU
+5V
FSID
SID
CEL2
BUFFER
PROU
PROD
IC6682 GND IC6722
BUFFER
TPVSET2
Q6742,Q6743
BUFFER
D6478
IC6602
INV
IC6751
VSET SEPA
+5V(SC3)
IC6752
AVR Q6762 Q6621
P+15V Q6624
+5V
1 3 P+15V
(SC3)
FET
FET
INV LO
IN OUT
2 DRIVER
IC6753 GND
+15V
IC6771
+5V
AVR
+5V(SC3)
+5V
1 3
(SC3)
+15V
R6858
IC6773
2
B
Y
A
BUFFER TPVAD
IC6774
IC6801 IC6802
Q6803
VSET2 GEN.
VAD GEN.( 90V)
(+8V)
VR6600 ADJ. ADJ.
VR6603
D6804
TPVAD
IC6471
ERROR
DET
+5V(SC1)
IC6861
+5V(SC3) Vscn(Vad+140V)
COMPARATOR
R6663 R6661
R6662
IC6871
Vad( 90V) R6864
D6871
COMPARATOR
Q6791
D6791
BUFFER
D6612 R6615 R6614 R6630
COMPARATOR
D6610
IC6610
142
TPSC1 WAVEFORM
VSET
VSUS
SC
TO SU45
45
VAD
1 FSIU
FSIU
VSCN
VSET2 3 FCLU
FCLU
5 FCLKU
FCLKU
7 PROU
D6620
PROU
8 Vf+5V
9 Vf+5V
SC41 TO SU41
A1 B1 Vf
VSCN SUPERIMPOSED
A33 B33 Vf
IC6681
Q6681
Q6691 A34 B34 Vf+5V
(Vscn)
+5V HO FET A35 B35 Vf+5V
TPSCI
OUT
CEL2 FET A36 B36 Vf
(Vfo)
IN
Q6682
DRIVER
LO
GND FET
A40 B40 Vf
OUT
SC42 TO SU42
VSET SUPERIMPOSED
IC6601 A1 B1 Vfo
Q6601
Q6602
FET Vfo
+5V A10 B10
HO BUFFER
OUT
CPH2
FET VR6601
A11 B11
IN
DRIVER
INIT-F
A12 B12
GND
A13 B13 Vf
A40 B40
VF_GND
VAD SEPA
Q6641,
Q6781, Q6643 Q6650
Q6782 SC
TO SD46
IC6772
FET 46
BUFFER
FSID
OUT
1 FSID
FCLD
+15V
HO 3 FCLD
FCLKD
FET 5 FCLKD
IN
VAD SUPERIMPOSED
DRIVER PROD
Q6661 7 PROD
VR6602
GND LO Q6662
2
FET 8 Vf+5V
3 1
BUFFER
OUT
INIT-F 9 Vf+5V
VAD CONT
D6665
IC6671
SC43 TO SD43
Q6679,
Q6671 Q6673
Q6680
+15V
Vf
A1 B1
FET
FET LO BUFFER
IN OUT
DRIVER
A28 B28 Vf
GND
A29 B30 Vscn
A30 B31 Vscn
A31 B31 Vfo
A40 B40 Vfo
SC44 TO SD44
Vf
A1 B1
IC6841 TPVSCN
D6841
(+50V)
A5 B5 Vf
Q6841,Q6842
A6 B6 Vf+5V
VSCN Gen.
A7 B7 Vf+5V
C6841
TPVAD
A7 B8 Vf
Vf
A40 B40
D6859 D6860
SC
1 4 5 6 8
30
TH-50PZ750U
SC-Board Block Diagram
SU41
C40 C80
C8 C48
C7 C47
C6 C46
C5 C45
C1 C41
SU42
D40 D80
D31 D71
Vscn D60 D70
Vscn D29 D69
D28 D68
Vf D1 D41
SD43
B40 B80
B13 B53
B12 B52
B11 B51
B10 B50
B1 B41
SD44
A40 A80
A36 A76
A35 A75
A34 A74
A33 A73
A1 A41