Fluke 77 Series III Service Manual page 58

Y1
32.768KHZ
C12 C15
47PF 33PF
5 %
5 %
54 55
P R O C E S S O R
M O H M S O H M S
O H M S
VOLTAGE
3V,300K
S O U R C E
30V,30K
300V,3K
1000V,300
V DT,OHMS
MA,10A
AC
CONVERTER
AC*
L O W
AC*
HIGH
AC AC
AC
16 17 28 26
C11
2.2
6V
R18
9.20K
0.5%
C9
10
10V
Figure 5-1. A1 Main PCA (cont)
S1
9 6
BT1
9V
CR1
BAS16
LS1 S1
2 3 48 8 7
U1
AP75 FUNCTION
ANALOG
O H M S
DE-INT
DE-INT
ACTIVE
FILTER BUFFER
INT
FILTER* INT
39 40 27 44 45
R10
1.50M
0.1W
9
C5 Z1
C6
.027
P C P C
63V 63V
.027
10
Schematic Diagrams
TP1
V D D
6 6 6
S1 S1
C16
4 5 12 47PF
6 5 4 5 %
O N
C O D E
49
D3
50
D2
51
D1
52
D0
56
CLK
57
NDAV
58
C0
59
C1
60
C2
1
C3
14
EC
TO
DIGITAL
SECTION
INTEGRATOR
46 47
C7 C8
0.47 .033
25V P P
63V
8
FLUKE 77-3-1001
5
C13
0.22
2 0 %
RANGE
aaa10f.eps
5-7