Fluke 867B - Power Supply Blocks

Theory of Operation
Power Supply Functional Blocks
2
2-11
10UF C62
R8
10.0K
Q17
6429
R50
316K
Q20 6429
18.7K R9
1 0.2 (867B only)
(867B only)
0
R16
D
D
D
3.24K R106 3.24K R11
Q21 4401
VSS
VCC
VDD
D
3
59.0K
R120
VEE
-24V
TP4
TP5
TP1
TP2
TP3
Q22 MJD32
12.1 R11 3
CR20
1N5817
680PF C56
10.0K
R73 U27
LM3578AN
EMIT CLIMOSC
INP INM COL
VS GND
R114
0.2
140.0K R12
BT1
6-4/ 3A
6.49K R55
1.82K R74
CR21
1N5817
R122 221K
2200PF C59
D
22PF C23
D
D D
D
D
5.62K
R116
1.82K
R123
10.0K R127
10.0K R131
D
D
Q16
SI9955DY
D
D
470PF
C22
HC132
R10
10.0K
HC132
R17
475
0.01UF
C24
R36 475
0.01UF
C57
U32
74HC4060DT
Q4
Q5 Q6 Q7 Q8 Q9 Q10 Q12 Q13 Q14
CKO
CKO*
CKI
RESET
1.00MEG R56
VR1
5231B
D
D
R13
10.0K
R19
10.0K
D
R39
10.0K
R89
10.7K
4403
Q19
4401
Q18
1UF C65
SI9430DY Q14
100K
R57
HC132
HC132
R44
464K
R68
1.00MEG
D
0.22UF C63
VR2
5240B
D
1UF C71
CR6 MMBD7000
1UF C1
D
475 R94
CR16 MMBD7000
475 R117
D
0.22UF C34
D D
CBB
GND
FL1
10.0K R115
D
1UF C12
1UF C88
D
6.34K R69
31.6K
R81
D
10.0K
R119
D
U31
LM4040-2.5
10UF C19
MMBD7000
CR17
R124
3.32 M
D
RITA-6303
T1
1UF C2
10UF C9
D
D
D
R128
10.0K
R132
3.24K
4401 Q23
D
10UF
C85
220UF
C90
220UF
C3
10K
MUN2211
Q6
10K
MUN2211
Q1
10K
MUN2211
Q2
VDD
D
10K
MUN2211 Q5
D
10K
MUN2211
Q11
D
10K
MUN2211
Q3
100K
R15
100K R28
D
0.1UF C58
CR18 1N5817
CR19 1N5817
MC33172
U4
LM393DT
U22
MC33172 U2
D
D
HC7 4
CL
Q Q
PR
D
HC7 4
CL
Q Q
PR
OUTIN
GND
LM2936M
U15
MC33172
U4
U22 LM393DT
MC33172
U2
D
24.9K R100
MMBD7000
CR9
D
1.00MEG R126
CR22
1N5817
475 R133 475 R46
475 R72
5
D
1UF C10
CR25
BAT54
10K
MUN2211
Q12
D
10K
MUN2211
Q13
D
MMBD7000
CR5
P3 P3 P3
D
D
10K
MUN2211
Q30
D
MMBD7000
CR8
D
1UF C21
BAV74
CR12
D
R6
475
D
1UF C91
D
D
VAD
10UF
C84
4.99K R7
10.0K R35
100K R130
R138 100K R139
1.00MEG
66.5K R140
100K R141
1.00MEG R14 100K R27
100K R29
R125
0
R137 100K
D
100K
R142
100K R143 Q10
5087
TP6
D
D
BAT54S
CR14
CR10
BAT54S
R23 22.1 R26 22.1
CR15
MMBD70 00
3
D
1000PF
C103
1000PF
C104
1000PF
C105
1000PF
C106
1000PF
C107
D
221K R41
R43
221K
OFF
S1
R48
0
R52
0
R60
0
R62
0
1UF C94
R87
0
D
WP1
47PF C117
330UH
L1
1UF C61
10UF C60
4
+3.3
TPS ARE 40MIL PADS
-20
CONTRAST CONTROL
80 MA
CURRENT SINK
BACKLIGHT
+5.2
-5.2
LCD
PUT CAP AT
SHIELD SCREW
MECCA CLIP TP
5
1
8 7
2
1
6 5
4
3
8765
4
321
9 8 7
6 5 4 3 2 1
7
6 5
3 2
1
8 4
3 2
1
8
7
6 5
4
8
7
6 5
4
8 4
3 2
1
8
7 6 5
4
3 2
1
8
7632
1
21
PSG CG1
CBB
6 5
4
3 2
1
13
12
11
10
9 8
15
14
13
12
11 10 97
6 5
4
3 2
1
6
5 4
3
2
1
10
9
8
13 12
11
3
1
2
INT_VDD
POK-1
POK-1
+5B
VEE_ON CONTRAST
RIC_VCC
IBL- IBL+
BACKLIGHT_ON*
+5B
+5B
+5B
+5B
+5B
+5B
+5B
+5B
16V
20%
+15
INT_VDD
VCCDRIVE
VDDDRIVE
-REG
35V
+REG
VDDDRIVE
CER
35V
CER
20V 20V
RES
20% 16V
LINE
20V
BATT_LVL BATT_TYPE
25V
20%
CER
CER
CER
25V
20%
POK-1
M4
LINE
10% 1/2W
M1
CER CER CER CER CER
5% CER
LINE
35V
BATT_ELIM
20V
20% 16V
25V
PWR_RESET*
CER
VCCDRIVE
16V AL 20%
U34
U34
20V
U34
CER CER
U33
U34
CER 1%
U33
WAKEUP*
POWER_DOWN
35V
20V
+2.5V
RES
20V
20V
M2
INT_VCC
INT_VSS
INT_VCC
INT_VSS
6V
J
BA
C
F
D
I
E
H
G
R158 47
os3f.eps
Figure 2-2. Power Supply Blocks