Zenith H27G48S, Service Manual

Page: 41 / 66

Video Sync Processor
1 2 3 4 5 6 7 8 9 10
G
D
C
B
E
F
A
6-4
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X” IN THEIR
COMPONENTS DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED. ALL COMPONENTS WITH “M” IN THE DESIGNATOR
ARE A SURFACE MOUNTED COMPONENT.
3828VD0171E FCS 48 SERIES SHEET 4
SDA 2
VERT- SW
SELH- OUT
H- SYNC - FRONT
V- SYNC - FRONT
HORZ- YUV
V- SYNC - SC A N
H- SYNC - SC A N
SC L2
VERT- YUV
+ 5 V
TNR
+ 5 V
TNR
+ 5 V
TNR
C 2 7 5 0
2 5 V
4 7 µ F
C 2 7 5 3
5 0 V
1µ F
C 2 7 5 6
2 5 V
4 7 µ F
C M2 7 5 1
5 0 V
0 .1
C M2 7 5 2
5 0 V
0 .0 1
C M2 7 5 4
5 0 V
0 .1
C M2 7 5 5
5 0 V
10 0 PF
C M2 7 5 7
5 0 V
0 .1
C RY2 7 0 0
C SB 4 5 6 F16
4 .0 2 7 9 7 Mhz
2 2 4 - 2 3 2 - 1
RM2 7 5 0
0 .1
RM2 7 5 1
10 K 1%
RM2 7 5 3
10 0
RM2 7 5 4
10 0
RM2 7 5 5
10 0
RM2 7 5 6
10 0
A
D
D
R
ES
S
IN1_ V/ L2
S
D
A
S
C
L
N
C
V
cc
2
S
EL
Y
O
U
T
S
EL
C
B
O
U
T
S
EL
C
R
O
U
T
GND2
SELVOUT
SELHOUT
NC
IREF
NC
EXTC LK/ XTAL
NC
YGIN
YGOUT
V_ PH
H_ PH
2 4
13
14
2 3
2 2
12 11 10 9 8 7
2 1
2 0
19
6 5
18
17
16
15
3 6 3 5
4 1
3 4
3
3 3
2
V
cc
3
IN
4
_
V
IN
4
_
H
IN
4
_
3
IN
4
_
2
IN
4
_
1
G
N
D
3
IN
3
_
V
IN
3
_
3
IN
3
_
H
IN
3
_
2
IN
3
_
1
3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5
3 7
3 8
4 7
4 6
IN
1_
H
/
L1
IN1_ L3
IN1_ SW
Vcc1
IN2 _ 1
IN2 _ 2
IN2 _ 3
IN2 _ H/ L1
IN2 _ V/ L2
IN2 _ L3
GND1
IN
1_
3
IN
1_
2
IN
1_
1
4 5
3 9
4 0
4 1
4 2
4 3
4 4
4 8
IN2 _ SW
IC M2700
C XA2 15 1Q
0 IMC RSO0 0 8 A
C 2 7 5 8
16 V
10 0 µ F
C M2 7 5 9
5 0 V
0 .1
L2 7 0 4
10 0 µ H
RM2 7 5 7
7 5
L2 7 0 2
4 7 µ H
RM2 7 5 2
PROV
L2 7 0 3
4 7 µ H
C 2 7 3 3
5 0 V
0 .4 7
C 2 7 3 4
5 0 V
0 .4 7
RM2 7 5 8
10 0
R2 7 3 1
10 0
RM2 7 5 9
10 0
R2 7 3 2
10 0
C 2 7 6 1
5 0 V
0 .4 7
C 2 7 6 2
5 0 V
0 .4 7
13
WF
WF
14
15
WF
WF
16
WF13
3.36V
WF14
3.36V
WF15
3.96V
WF16
2.88V
SHT. 6-3
SHT. 6-3