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VITS100 NTSC VITS Inserter Instruction Manual
9–19
LM393
FLOATING COMMON
F
OR
220V
110V
REAR
PANEL
LF1
1 2
S10A
C
R143
22M
F1
R144
1M
3 4
S10B
RT1
5
RV1
330V
CR12
C84
0.15uF
C110
150UF
C
C85
.01uF
R157
270k
C86
.01uF
DS4
R145
10M
L17
150UH
C88
220pF
P21
1
2
J21
1
2
B100
+15V
+12VP
CR15
CR16
CR24
U85
7812
C106
1uF
C100
1uF
C500
47uF
CR10
U72
7812
R156
5
C104
47uF
C102
1000uF
P17
J18
J17
HOUSEKEEPING SUPPLY
1 - 2 HOUSEKEEPING SUPPLY ENABLE
NO PLUG HOUSEKEEPING SUPPLY DISABLE
TRANSFORMER ENABLE
1 - 2 NORMAL OPERATION
NO PLUG DISABLES POWER SUPPLY
F
R154
100K
C87
0.1uF
F
R500
1M
R501
20.0k
R502
30.1K
R165
10.0k
F
C508
1uF
F
R175
10.0k
G
N
D
5
V
C
C
7
IS
3
VREF
8
CT
4
COMP
1
VFB
2
OUT
6
U78
3842
C118
.001uF
C117
0.1uF
F
TP3
14.1V
C111
.01uF
R173
3.01k
C115
1uF
Q180
F
F
F
CR9
6
5
4
2
3
1
11
12
13
8
9
10
7
T1
C96
0.47uF
12
J17
P18
12
J18
C113
100uF
CR11
R155
5
C105
47uF
C103
1000uF
H
H
CR18
-12VP
CR17
U73
7912
C101
1uF
C107
1uF
L16
5uH
C89
0.1uF
Q15
R146
1k
+5VP
C95
100uF
VR4
5.0V
F
CR14
H
R147
27
C108
1uF
C512
2700uF
C116
.01uF
C92
2700uF
H
CR20
CR22
Q16
Q17
CR21
R150
10
R153
270k
CR19
R151
10k
C97
680pF
R149
50
F
F
F
R180
10.0k
R162
18.2k
OVERCURRENT SHUTDOWN
J19
1 - 2 SHUTDOWN ENABLE
C99
100uf
Q18
F
F
R164
40.02k
R172
20.0k
2
3
1
8
4
U76A
ADJ
+5V
F
R161
4.75k
R171
1k
CR26
R160
8.25k
C501
.47UF
R504
10.0k
F
12
J19
P19
R503
10.0k
R174
4.75k
R159
10.0k
NO PLUG SHUTDOWN DISABLE
5
6
7
U76B
LM393
F
C114
470pF
R184
2.15k
F
F
1
2
5
4
6
U75
SOC123A
R166
475
R152
1.50k
R163
0.51Ohm
R167
150.0K
R168
2.00k
CR13
L15
10uH
C109
1uF
C91
2700uF
C94
100uF
-5VP
OUTPUT
C112
.068uF
R169
1.50k
C98
0.1uF
R170
1k
2
3
1
U74
TL431C
F
R158
2.74k
F
REV MAY 1993
VOLTAGE
ADJUST
NOTE: SEE PARTS LIST FOR EARLER VALUES
AND SERIAL NUMBER RANGES
P/O A1 INSERTER BOARD
POWER SUPPLY 8