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SENSOR
INPUT
C55
P1
VREF
.1UF
5
9
4
TP45
8
3
L3
7
2
L4
6
L5
1
C116
C117
C118
DB9F
100PF
100PF
100PF
TP47
C119
VREF
100PF
TP48
R18
6.04K
RSENS
TO CENTER MTG. HOLE
C5
.01UF
VCC
LED DRIVE
R46
10K
Q3
R45
MMBTA56
10K
Q4
MMBTA56
R64
10K
Q1
R48
TP46
MMBTA06
10K
TP50
R51
22.1K
R54
6.8
Q2
MMBTA06
R47
10K
VCC
U10
12
14
6
X0
X
U9A
13
1
X1
15
7
Y
2
8
LT1013
Y0
1
4
Y1
Z
2
5
Z0
3
Z1
8
VSS
6
INH
C53
11
7
A
VEE
10
B
.1UF
9
16
C
VDD
4053
VCC
TP77
Q5
2N3904
IR/RED
R49
100K
R162
100K
PWM2
PWM1
C60
R135
3.74K
R42
4.7PF
280K
TP83
R53
100K
C36
R43
.1UF
20K
R50
C39
182K
.022UF
TP84
R52
100K
C37
R44
.1UF
20K
C38
.022UF
C123
22PF
PHOTOI
IR/RED
CR12
OFF/ON
1N914
CR18
LED DIS
1N914
RSENS
LED Drive Circuit
Figure 9-8
9-33
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