Ifb-12 (New), Ifb-12A (1/3) Board; Ifb-12 (New), Ifb-12A (2/3) Board; Ifb-12 (New), Ifb-12A (3/3) Board - Sony IFB-12 Service Manual

IFB-12 (NEW) /IFB-12A (2/3) BOARD
IC2 GS4881-CKA
+
COMPOSITE
1
SYNC
Y
YA
+
–
VIDEO
2
INPUT CLK
–
CK I O
+
YB
VERTICAL +
3
Q S
SYNC
Q R
DEFAULT
+5V
OSC
GND 4
Y2
+
+
–
Y1
Y2
+
O
–
Y1
IFB-12 (NEW) /IFB-12A (2/3) BOARD IFB-12 (NEW) /IFB-12 (3/3) BOARD
IC3 SN75157PS IC10, 11, 12 MPC100AU
NON INV IN1 1 8 V
CC
IN 1 1
OUT1 2 7 INV IN2
GND 2
OUT2 3 6 NON INV IN2
3
IN 2
GND 4 5 INV IN2
4
GND
IN 3 5
6
GND
IN 4 7
IFB-12/12A
SUPPLY
REC 8
VOLTAGE
ODD/EVEN
7
FIELD INDEX
O
CLK
6 GND
CAPACITOR
Vcc
CHARGE
CURRENT
BURST GATE/
5
BACK PORCH
CLAMP
–
+
+
–
DB1 14 SEL 1
13 SEL 2
DB2 12
–V CC
11
V OUT
DB3 10 +V
CC
9
SEL 3
DB4 8 SEL 4
• IFB-12 (NEW) /IFB-12A (1/3) BOARD
WAVEFORMS
1 2
0.7 Vp-p (H)
5
5.0 Vp-p (V)
• IFB-12 (NEW) /IFB-12A (2/3) BOARD WAVEFORMS
1 2
4.7 Vp-p (H)
5
1.7 Vp-p (H)
• IFB-12 (NEW) /IFB-12A (3/3) BOARD WAVEFORMS
1 2
2.0 Vp-p (H)
5 6
1.0 Vp-p (H)
9 0
0.7 Vp-p (H)
7-8 7-8
3 4
0.7 Vp-p (H) 0.7 Vp-p (H)
3 4
4.1 Vp-p (H)
4.4 Vp-p (V)
3 4
2.0 Vp-p (H) 2.0 Vp-p (H)
7 8
1.0 Vp-p (H) 0.7 Vp-p (H)
!-
4.1 Vp-p (H) 4.1 Vp-p (V)
4.7 Vp-p (H)
4.0 Vp-p (V)
1.0 Vp-p (H)
0.7 Vp-p (H)