Sylvania LC420SS8, Service Manual

Page: 24 / 68

7-2 A81H1BLVIS
Video Input Select Block Diagram
DIGIT
AL MAIN CB
A UNIT
J
A
CK CB
A
SIDE J
A
CK CB
A
IC3501
(VIDEO ADC)
IC3701
(MEMOR
Y)
VIDEO SIGNAL
CL7002A
CL7002B
VIDEO-IN2
5
S-VIDEO-C-IN2
1
S-VIDEO-Y
-IN2
3
5 1 3
CN3707
CN7001
VIDEO-IN2
5
S-VIDEO-C-IN2
7
S-VIDEO-Y
-IN2
9
36 34 32
VIDEO-IN1
21
S-VIDEO-C-IN1
18
S-VIDEO-Y
-IN1
VIDEO-IN2
S-VIDEO-C-IN2
S-VIDEO-Y
-IN2
VIDEO-IN1
S-VIDEO-C-IN1
S-VIDEO-Y
-IN1
19
20 23 22
COMPONENT
-Y
-IN1
35
COMPONENT
-Pb-IN1
34
COMPONENT
-Pr-IN1
33
6 7 8
COMPONENT
-Y
-IN2
39
COMPONENT
-Pb-IN2
40
COMPONENT
-Pr-IN2
38
2 1 3
COMPONENT -Y
-IN1
COMPONENT -Pb-IN1 COMPONENT -Pr-IN1 COMPONENT -Y
-IN2
COMPONENT -Pb-IN2 COMPONENT -Pr-IN2
JK7003 JK7005
JK7502 VIDEO-IN2
JK7503 S-VIDEO-IN2
CY
JK7002 VIDEO-IN1
MUX
PC-V
-SYNC
PC-H-SYNC
D
VI-V
-SYNC
D
V
I-D
A
T
A(0-23)
T
O
LCD
DRIVE BLOCK DIA
GRAM
D
V
I-H-SYNC
D
VI-CLOCK
D
VI-V
-SYNC
D
VI-H-SYNC
D
VI-CLOCK
OUTPUT FORMA
TTING
43-50, 55-62, 76-83
JK7001 S-VIDEO-IN1
CY
JK3701
PC-IN
PC-R PC-G PC-B PC-V
-SYNC
PC-H-SYNC
SD
A
SCL
9 6
11 25 22 27 20 18 15 14 13
71 70 68
1 2 3
14 13 12 15
CLAMP
ADC
MUX CSC
Q7102 B
U
FFER
Q7104
B
U
FFER
Q7103
B
U
FFER
Q7101 B
U
FFER
Q7105 B
U
FFER
Q7106 B
U
FFER
5 6
WF6
WF5
WF4
WF1
WF3
WF2