Sony IFB-12 Service Manual page 28

IFB-12 (OLD) (2/3) BOARD
IC2 GS4881-CKA
COMPOSITE
1
SYNC
YA
+
–
VIDEO
2
INPUT
–
+
YB
VERTICAL
3
S
Q
SYNC
Q R
+5V
OSC
GND 4
IFB-12 (OLD) (2/3) BOARD
IC3 SN75157PS
NON INV IN1 1 8
OUT1 2
7
OUT2 3
6
GND 4 5
7-2
+
Y
CLK
CK I O
+
DEFAULT
Y2
+
+
–
Y1
Y2
+
O
–
Y1
IFB-12 (OLD) (2/3) BOARD
IC5 SN75453BPS
V
CC
1 A 1
INV IN2
2
1 B
NON INV IN2
INV IN2 3
1 Y
4
GND
SUPPLY
REC 8
VOLTAGE
ODD/EVEN
7
FIELD INDEX
O
CLK
6 GND
CAPACITOR
Vcc
CHARGE
CURRENT
BURST GATE/
5 BACK PORCH
CLAMP
–
+
+
–
8 V
CC
7
2 B
6
2 A
5
2 Y
IFB-12 (OLD) (3/3) BOARD
IC10, 11, 12 MPC100AU
IN 1 1 DB1 14 SEL 1
GND 2 13 SEL 2
3 DB2 12
IN 2 –V
CC
4 11
GND V OUT
5 DB3 10
IN 3 +V
CC
6 9
GND SEL 3
IN 4 7 DB4 8 SEL 4
IFB-12/12A